45 results on '"Campos, Magnólia A."'
Search Results
2. Miraculin-based sweeteners in the protein-engineering era: an alternative for developing more efficient and safer products.
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Maia, Rafael Trindade, Silva, Ivânia Samara dos Santos, Fernandes de Souza, Adeilma, Frazão, Nilton Ferreira, de Lima, Rafael Medeiros, and Campos, Magnólia de Araújo
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- 2024
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3. Introductory Chapter: Genetic Variation - The Source of Biological Diversity
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Trindade Maia, Rafael, primary and de Araújo Campos, Magnólia, additional
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- 2021
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4. Introductory Chapter: Homology Modeling
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Trindade Maia, Rafael, primary, de Araújo Campos, Magnólia, additional, and Maciel de Moraes Filho, Rômulo, additional
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- 2021
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5. Review: Potential biotechnological assets related to plant immunity modulation applicable in engineering disease-resistant crops
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Silva, Marilia Santos, Arraes, Fabrício Barbosa Monteiro, Campos, Magnólia de Araújo, Grossi-de-Sa, Maira, Fernandez, Diana, Cândido, Elizabete de Souza, Cardoso, Marlon Henrique, Franco, Octávio Luiz, and Grossi-de-Sa, Maria Fátima
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- 2018
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6. Miraculin-based sweeteners in the protein-engineering era: an alternative for developing more efficient and safer products
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Maia, Rafael Trindade, primary, Silva, Ivânia Samara dos Santos, additional, Fernandes de Souza, Adeilma, additional, Frazão, Nilton Ferreira, additional, de Lima, Rafael Medeiros, additional, and Campos, Magnólia de Araújo, additional
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- 2023
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- View/download PDF
7. Introductory Chapter: Population Genetics - The Evolution Process as a Genetic Function
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Trindade Maia, Rafael, primary and de Araújo Campos, Magnólia, additional
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- 2019
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8. Characterization of Cucurbit Aphid-Borne Yellows Virus (CABYV) from Passion Fruit in Brazil: Evidence of a Complex of Species within CABYV Isolates
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Vidal, Andreza H., primary, Lacorte, Cristiano, additional, Sanches, Marcio M., additional, Alves-Freitas, Dione M. T., additional, Abreu, Emanuel F. M., additional, Pinheiro-Lima, Bruna, additional, Rosa, Raul C. Carriello, additional, Jesus, Onildo N., additional, Campos, Magnólia A., additional, Felix, Gustavo P., additional, Abreu, Ana Clara R., additional, Santos, Yam S., additional, Lacerda, Ana Luiza M., additional, Varsani, Arvind, additional, Melo, Fernando L., additional, and Ribeiro, Simone G., additional
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- 2023
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9. Identification of the Putative Class 3 R Genes in Coffea arabica from CafEST Database
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Campos, Magnólia A., Silva, Flávia B., Silva, Marilia S., Albuquerque, Érika E. V. S., do Amaral, Alexandre M., Teixeira, Cristiane C., Mehta, Ângela, Sá, Maria Fátima G., Istrail, Sorin, editor, Pevzner, Pavel, editor, Waterman, Michael S., editor, Sagot, Marie-France, editor, and Walter, Maria Emilia M. T., editor
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- 2007
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10. EvoDesign
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Silva, Ivania Samara dos Santos, primary, Sousa, Adeilma Fernandes de, additional, Medeiros Filho, Francisco Carlos de, additional, Maia, Rafael Trindade, additional, and Campos, Magnólia de Araújo, additional
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- 2022
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11. Integrated view of population genetics
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Maia, Rafael Trindade, primary and Campos, Magnólia de Araújo, additional
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- 2022
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12. RNAi and Bt approaches to insect-pest control: analyses and perspectives on trends in global patent publications
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Rodrigues-Silva, Paolo Lucas, primary, Moura, Stéfanie Menezes de, additional, Dantas, Luciano de Medeiros, additional, Domiciano, Gisele Pereira, additional, Silva, Maria Cristina Mattar da, additional, Campos, Magnólia de Araújo, additional, and Grossi-de-Sa, Maria Fatima, additional
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- 2022
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13. Mapas conceptuales aplicables a la enseñanza de la genética
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Silva, Jakeline Moreira da, Campos, Magnólia de Araújo, Bezerra, José Jailson Lima, Souza, Fernanda Freitas, Silva, Ruana Carolina Cabral da, and Araújo, José Lucas de
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Cognitive structure ,Didactic proposal ,Estrutura cognitiva ,Estructura cognitiva ,Genetics teaching ,Enseñanza de la genética ,Proposta didática ,Ensino de genética ,Propuesta didáctica - Abstract
The teaching of genetics faces constant problems with the methods employed by biology teachers in basic education. In addition, it is noted that this is one of the difficult to understand subjects, missing connecting concepts and subjects for students at different educational levels. Thus, the objective was to build and propose the use of conceptual maps applicable to the teaching of genetics. From studies conducted in specialized bibliographies, two maps of concepts related to genetics were built in order to be further tested as facilitating instruments in the teaching-learning process. The first concept map was built with fundamental concepts about genetic material, DNA and RNA, with genomic information associated with prokaryotes, eukaryotes and viruses. In relation to the second map, it was built on the basis of information about the pathways by which DNA molecules express the information they conduct within the cell, or will transmit that information to another cell or another organism. Both maps were developed with fluid and comprehensive reading, which can be used as facilitating tools for teaching and learning of traditional and current genetics content. La enseñanza de la genética enfrenta problemas constantes con respecto a los métodos utilizados por los profesores de biología en la educación básica. Además, se observa que esta es una de las asignaturas de difícil comprensión, que carece de conectar los conceptos y asignaturas para los estudiantes en diferentes niveles de educación. Por lo tanto, el objetivo era construir y proponer el uso de mapas conceptuales aplicables a la enseñanza de la genética. A partir de los estudios realizados en bibliografías especializadas, se construyeron dos mapas de conceptos relacionados con la genética para luego ser probados como instrumentos facilitadores en el proceso de enseñanza-aprendizaje. El primer mapa conceptual se construyó con conceptos fundamentales sobre material genético, DNA y RNA, con información genómica asociada con procariotas, eucariotas y virus. Con respecto al segundo mapa, fue construido en base a información sobre las vías por las cuales las moléculas de DNA expresan la información que transportan, dentro de la célula, o transmitirán esa información a otra célula u otro organismo. Ambos mapas fueron creados con una lectura fluida e integral, que puede usarse como herramientas para facilitar la enseñanza-aprendizaje de contenidos tradicionales y actuales en genética. O ensino de genética enfrenta constantes problemas quanto aos métodos empregados pelos professores de biologia na educação básica. Além disso, nota-se que esta é uma das disciplinas de difícil compreensão, faltando conectar os conceitos e assuntos para estudantes em diferentes níveis de ensino. Desta forma, objetivou-se construir e propor o uso de mapas conceituais aplicáveis ao ensino de genética. A partir dos estudos realizados em bibliografias especializadas, foram construídos dois mapas de conceitos relacionados à genética com o intuito de serem posteriormente testados como instrumentos facilitadores no processo de ensino-aprendizagem. O primeiro mapa conceitual foi construído com conceitos fundamentais sobre o material genético, DNA e RNA, com informação genômica associada a procariotos, eucariotos e vírus. Em relação ao segundo mapa, este foi construído com base em informações sobre as vias pelas quais moléculas de DNA expressam a informação que conduzem, dentro da célula, ou vão transmitir essa informação para outra célula ou outro organismo. Ambos os mapas foram elaborados com leitura fluida e compreensiva, os quais podem ser usados como instrumentos facilitadores do ensino-aprendizagem de conteúdos tradicionais e atuais em genética.
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- 2020
14. Consumo de óleo de cártamo (Carthamus tinctorius l.) reduz gorduras corporais e triglicerídeos em ratos wistar exercitados
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Silva, Roberta Cristina de França, Martins, Ana Cristina Silveira, Xavier, David Ryan Santos, Sousa, Dayana Flávia Silva, Campos, Magnólia de Araújo, Melo, Marília Ferreira Frazão Tavares de, and Soares, Juliana Késsia Barbosa
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lcsh:LC8-6691 ,exercício aeróbico ,lcsh:Special aspects of education ,murinometria ,Murinometria ,Exercício aeróbico ,Murinometría ,Lipids ,gordura hepática ,lcsh:Social Sciences ,lcsh:H ,Grasa del hígado ,Gordura hepática ,Lípidos ,Liver fat ,Lipídeos ,Ejercicio aeróbico ,Murineometry ,lcsh:Science (General) ,Aerobic exercise ,lipídeos ,lcsh:Q1-390 - Abstract
Objective: To evaluate the effects of the safflower oil supplementation on the body composition and biochemistry parameters of exercised rats. Methods: Forty male rats were divided into four groups: sedentary control, exercised control, sedentary safflower oil and exercised safflower oil. The exercise performed for treadmill running for four weeks. It was measured the murinometry of the animals, consumption, protein, carcass fat, liver fat, abdominal fat and biochemical parameters. As statistical analyzes were done, use the Anova test followed by Tukey, with p
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- 2020
15. Concepções prévias de estudantes de ensino médio sobre genética e o uso de mapas conceituais na aprendizagem
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Silva, Jakeline Moreira da, primary, Campos, Magnólia de Araújo, additional, Silva, Ruana Carolina Cabral da, additional, Bezerra, José Jailson Lima, additional, and Araújo, José Lucas de, additional
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- 2020
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16. Mapas conceituais aplicáveis ao ensino de genética
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Silva, Jakeline Moreira da, primary, Campos, Magnólia de Araújo, additional, Bezerra, José Jailson Lima, additional, Souza, Fernanda Freitas, additional, Silva, Ruana Carolina Cabral da, additional, and Araújo, José Lucas de, additional
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- 2020
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17. Identification of the Putative Class 3 R Genes in Coffea arabica from CafEST Database
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Campos, Magnólia A., primary, Silva, Flávia B., additional, Silva, Marilia S., additional, Albuquerque, Érika E. V. S., additional, do Amaral, Alexandre M., additional, Teixeira, Cristiane C., additional, Mehta, Ângela, additional, and Sá, Maria Fátima G., additional
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- 2007
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18. Plant–pathogen interactions: what is proteomics telling us?
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Mehta, Angela, Brasileiro, Ana C. M., Souza, Djair S. L., Romano, Eduardo, Campos, Magnólia A., Grossi-de-Sá, Maria F., Silva, Marília S., Franco, Octávio L., Fragoso, Rodrigo R., Bevitori, Rosangela, and Rocha, Thales L.
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- 2008
19. Performance of richness estimators for invertebrate inventories in reservoirs.
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Brito, Pablo Gouveia, Jovem-Azevêdo, Daniele, de Araújo Campos, Magnólia, Paiva, Franciely Ferreira, and Molozzi, Joseline
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INVENTORIES ,AQUATIC invertebrates ,LITTORAL zone ,SPECIES diversity ,ARID regions - Abstract
Biological inventories combined with the estimation of species richness represent a useful tool for the analysis of the pattern of species distribution in different regions. This study aimed to (i) comparatively evaluate the performance of non-parametric richness estimators for invertebrate inventories in reservoirs between ecoregions and (ii) to assess whether the efficiency (bias, precision and accuracy indices) of the estimators is altered when applied to sites from different ecoregions. The study was conducted in the ecoregions Central Pediplano of the Borborema Plateau (Paraíba River basin) and Northern Sertaneja Depression (Piranhas-Assu River basin), semiarid region of Brazil. Six reservoirs were selected and benthic macroinvertebrates were sampled at 141 sites distributed along the littoral zone, in 4 periods (June, September, December 2014 and March 2015). The organisms were identified to the family level, except for Chironomidae, identified to the genus level. We comparatively analyzed six non-parametric richness estimators: Jackknife 1, Jackknife 2, Chao1, Chao 2, ICE, and Bootstrap, and three performance indicators: bias, precision, and accuracy. ICE and Jackknife 2 had more stable results for total species richness, but with different performance between ecoregions for bias, precision, and accuracy. Variation in performance of the estimators may be associated with differences in species richness and frequency between ecoregions. ICE and Jackknife 2 proved to be the best estimators for biological inventories of aquatic invertebrates in reservoirs in studies comparing data from different ecoregions, due to accuracy and precision, while Bootstrap is the least indicated, given greater bias and less accuracy and precision. [ABSTRACT FROM AUTHOR]
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- 2021
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20. TRATAMENTO DE LIXIVIADO DE ATERRO SANITÁRIO APLICANDO MICROALGAS EM BIORREATORES ALIMENTADOS EM BATELADA
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Paula e Silva, Maria Célia Cavalcante de, primary, Albuquerque, Maria Virgínia da Conceição, additional, Rodrigues, Roberta Milena Moura, additional, Cartaxo, Amanda da Silva Barbosa, additional, Lopes, Wilton Silva, additional, Pearson, Howard William, additional, Campos, Magnólia de Araújo, additional, and Leite, Valderi Duarte, additional
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- 2020
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21. Expression in Escherichia coli, purification, refolding and antifungal activity of an osmotin from Solanum nigrum
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Magalhães Cláudio P, Silva Marilia S, Campos Magnólia de A, Ribeiro Simone G, Sarto Rafael PD, Vieira Eduardo A, and Grossi de Sá Maria F
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Microbiology ,QR1-502 - Abstract
Abstract Background Heterologous protein expression in microorganisms may contribute to identify and demonstrate antifungal activity of novel proteins. The Solanum nigrum osmotin-like protein (SnOLP) gene encodes a member of pathogenesis-related (PR) proteins, from the PR-5 sub-group, the last comprising several proteins with different functions, including antifungal activity. Based on deduced amino acid sequence of SnOLP, computer modeling produced a tertiary structure which is indicative of antifungal activity. Results To validate the potential antifungal activity of SnOLP, a hexahistidine-tagged mature SnOLP form was overexpressed in Escherichia coli M15 strain carried out by a pQE30 vector construction. The urea solubilized His6-tagged mature SnOLP protein was affinity-purified by immobilized-metal (Ni2+) affinity column chromatography. As SnOLP requires the correct formation of eight disulfide bonds, not correctly formed in bacterial cells, we adapted an in vitro method to refold the E. coli expressed SnOLP by using reduced:oxidized gluthatione redox buffer. This method generated biologically active conformations of the recombinant mature SnOLP, which exerted antifungal action towards plant pathogenic fungi (Fusarium solani f. sp.glycines, Colletotrichum spp., Macrophomina phaseolina) and oomycete (Phytophthora nicotiana var. parasitica) under in vitro conditions. Conclusion Since SnOLP displays activity against economically important plant pathogenic fungi and oomycete, it represents a novel PR-5 protein with promising utility for biotechnological applications.
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- 2008
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22. Introductory Chapter: Population Genetics - The Evolution Process as a Genetic Function
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Maia, Rafael Trindade, de Araújo Campos, Magnólia, Maia, Rafael Trindade, and de Araújo Campos, Magnólia
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- 2019
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23. Molecular Basis of Citrus sunki Susceptibility and Poncirus trifoliata Resistance Upon Phytophthora parasitica Attack
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Dalio, Ronaldo José Durigan, primary, Máximo, Heros José, additional, Oliveira, Tiago Silva, additional, Azevedo, Thamara de Medeiros, additional, Felizatti, Henrique Leme, additional, Campos, Magnólia de Araújo, additional, and Machado, Marcos Antonio, additional
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- 2018
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24. Protective effect and expression of defense-related ESTs induced by acibenzolar-S-methyl and a phosphorylated mannan oligosaccharide-based product against Moniliophthora perniciosa in Theobroma cacao
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de Matos Pereira, Lívia, de Resende, Mário Lúcio Vilela, Mathioni, Sandra Marisa, Campos, Magnólia Araújo, Júnior, Pedro Martins Ribeiro, Camilo, Fabrício Rabelo, Silva, Anderson Tadeu, and Paiva, Luciano Vilela
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Witches’ broom disease (WBD), caused by the fungus Moniliophthora perniciosa, is one of the main diseases in cocoa (Theobroma cacao) and has caused severe economic losses. Integrated disease management has been the focus for its control and therefore, the identification of new inducers of plant resistance is desirable. Thus, the goal of this work was to evaluate two potential inducers of resistance against WBD. A phosphorylated mannan oligosaccharide-based product (PMO) and acibenzolar S-methyl (ASM) were tested on M. perniciosa inoculated seedlings and in field experiments and showed a reduction on the incidence of WBD. The expression of two defense-related expressed sequence tags (ESTs) in cocoa, coding for peroxidase (Pox) and chitinase (Chi), were accessed by qPCR. Both products induced the expression of the Pox defense-related EST. In general, ASM induced the expression of chitinase (Chi) and peroxidase (Pox) in earlier time-points than PMO. However, PMO provided long-lasting and higher levels of expression. Chi expression was triggered in the time-points succeeding the spraying but was very low. On the other hand, peaks of Pox transcripts were detected in later time-points for both inducers. ASM and PMO modes of action might be explained, at least partially, by the overexpression of defense-related ESTs.Keywords: Cocoa, witches’ broom disease, disease control, peroxidase, chitinase, induced resistance, elicitors, quantitative reverse transcriptase PCR (qRT-PCR)African Journal of Biotechnology Vol. 12(12), pp. 1311-1317
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- 2016
25. Efeito do modo de condução do cultivo de maracujá-amarelo na produção dos frutos
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Medeiros, Ariane Dantas de, primary, Nunes, Vinnícius Duarte, additional, Costa, Fernanda Dayenne Alves Furtado da, additional, Adriano, Wellington Sabino, additional, Campos, Magnólia de Araújo, additional, and Dantas, Ângelo Kidelman, additional
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- 2016
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26. Caracterização agronômica, quantidade e qualidade do maracujá-azedo na Região da Serra de Cuité-PB
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Araújo, Thainá Pereira de, primary, Silva, Hiago Levi Pereira, additional, Costa, Fernanda Dayenne Alves Furtado da, additional, Adriano, Wellington Sabino, additional, Campos, Magnólia de Araújo, additional, and Dantas, Ângelo Kidelman, additional
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- 2016
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27. Expression of an osmotin-like protein from Solanum nigrumconfers drought tolerance in transgenic soybean
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Weber, Ricardo Luís Mayer, primary, Wiebke-Strohm, Beatriz, additional, Bredemeier, Christian, additional, Margis-Pinheiro, Márcia, additional, de Brito, Giovani Greigh, additional, Rechenmacher, Ciliana, additional, Bertagnolli, Paulo Fernando, additional, de Sá, Maria Eugênia Lisei, additional, Campos, Magnólia de Araújo, additional, de Amorim, Regina Maria Santos, additional, Beneventi, Magda Aparecida, additional, Margis, Rogério, additional, Grossi-de-Sa, Maria Fátima, additional, and Bodanese-Zanettini, Maria Helena, additional
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- 2014
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28. Extreme resistance to two Brazilian strains of Potato virus Y (PVY) in transgenic potato, cv. Achat, expressing the PVYº coat protein
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Romano, Eduardo, Ferreira, Adriana T., Dusi, André N., Proite, Karina, Buso, Jose A., Ávila, Antonio C., Nishijima, Marta L., Nascimento, Adriana S., Bravo-Almonacid, Fernando, Mentaberry, Alejandro, Monte, Damares, Campos, Magnólia A., Melo, Paulo Eduardo, Cattony, Monica K., and Torres, Antonio C.
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GMO ,OGM ,Solanum tuberosum - Abstract
The coat protein (CP) gene of the potato virus Y strain "o" (PVY O) was introduced into potato, cultivar Achat, via Agrobacterium tumefaciens-mediated transformation. Sixty three putative transgenic lines were challenged against the Brazilian strains PVY-OBR and PVY-NBR. An extremely resistant phenotype, against the two strains, was observed in one line, denominated 1P. No symptoms or positive ELISA results were observed in 16 challenged plants from this line. Another clone, named as 63P, showed a lower level of resistance. Southern blot analysis showed five copies of the CP gene in the extremely resistant line and at least three copies in the other resistant line. The stability of the integrated transgenes in the extreme resistant line was examined during several in vitro multiplications over a period of three years, with no modification in the Southern pattern was observed. The stability of the transgenes, the absence of primary infections and the relatively broad spectrum of resistance suggest that the extremely resistant line obtained in this work can be useful for agricultural purposes. O gene da capa protéica (CP) do Potato virus Y estirpe "o", foi introduzido em batata cultivar Achat, via Agrobacterium tumefaciens. Sessenta e três linhas possivelmente transgênicas foram desafiadas com as estirpes brasileiras PVY-OBR e PVY-NBR. Uma linha apresentou extrema resistência às duas estirpes inoculadas, e foi denominado clone 1P. Não foram observados sintomas sistêmicos de infecção e as plantas foram negativas em Elisa. Outra linha, denominada clone 63P, mostrou algum nível de resistência. Análises por Southern blot indicaram a presença de pelo menos cinco cópias do gen CP no clone 1P e pelo menos três cópias no clone 63P. A estabilidade do gene introduzido no clone 1P foi avaliada durante três anos, após várias multiplicações in vitro. Não foram observadas mudanças no padrão do Southern blot. A estabilidade do transgene, na ausência de infecções primárias e relativo largo espectro de resistência sugerem que o clone 1P pode ser utilizado para fins comerciais.
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- 2001
29. Transcription profile of soybean-root-knot nematode interaction reveals a key role of phythormones in the resistance reaction
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Beneventi, Magda Aparecida, primary, da Silva, Orzenil Bonfim, additional, de Sá, Maria Eugênia Lisei, additional, Firmino, Alexandre Augusto Pereira, additional, de Amorim, Regina Maria Santos, additional, Albuquerque, Érika Valéria Saliba, additional, da Silva, Maria Cristina Mattar, additional, da Silva, Joseane Padilha, additional, Campos, Magnólia de Araújo, additional, Lopes, Marcus José Conceição, additional, Togawa, Roberto Coiti, additional, Pappas, Georgios Joanis, additional, and Grossi–de–Sa, Maria Fatima, additional
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- 2013
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30. Transcriptome analysis of resistant soybean roots infected by Meloidogyne javanica
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Sá, Maria Eugênia Lisei de, primary, Lopes, Marcus José Conceição, additional, Campos, Magnólia de Araújo, additional, Paiva, Luciano Vilela, additional, Amorim, Regina Maria Santos de, additional, Beneventi, Magda Aparecida, additional, Firmino, Alexandre Augusto Pereira, additional, and Sá, Maria Fátima Grossi de, additional
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- 2012
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31. Expression in Escherichia coli, purification, refolding and antifungal activity of an osmotin from Solanum nigrum
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Campos, Magnólia de A, primary, Silva, Marilia S, additional, Magalhães, Cláudio P, additional, Ribeiro, Simone G, additional, Sarto, Rafael PD, additional, Vieira, Eduardo A, additional, and Grossi de Sá, Maria F, additional
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- 2008
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32. Phytophthora parasitica transcriptome, a new concept in the understanding of the citrus gummosis
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Rosa, Daniel D., primary, Campos, Magnólia A., additional, Targon, Maria Luisa P.N., additional, and Souza, Alessandra A., additional
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- 2007
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33. Comparative analysis of differentially expressed sequence tags of sweet orange and mandarin infected with Xylella fastidiosa
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Souza, Alessandra A. de, primary, Takita, Marco A., additional, Coletta-Filho, Helvécio D., additional, Campos, Magnólia A., additional, Teixeira, Juliana E.C., additional, Targon, Maria Luísa P.N., additional, Carlos, Eduardo F., additional, Ravasi, Juliano F., additional, Fischer, Carlos N., additional, and Machado, Marcos A., additional
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- 2007
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34. PR gene families of citrus: their organ specific-biotic and abiotic inducible expression profiles based on ESTs approach
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Campos, Magnólia A., primary, Rosa, Daniel D., additional, Teixeira, Juliana Érika C., additional, Targon, Maria Luisa P.N., additional, Souza, Alessandra A., additional, Paiva, Luciano V., additional, Stach-Machado, Dagmar R., additional, and Machado, Marcos A., additional
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- 2007
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35. Obtenção de anticorpos policlonais contra proteínas presentes em plantas afetadas pela anomalia declínio dos citros
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Barrios, Sanzio Carvalho Lima, primary, Teixeira, Juliana Erika, additional, Azevedo, Sebastião Márcio de, additional, Campos, Magnólia de Araújo, additional, and Paiva, Luciano Vilela, additional
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- 2006
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36. Identification of the Putative Class 3 R Genes in Coffea arabica from CafEST Database.
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Istrail, Sorin, Pevzner, Pavel, Waterman, Michael S., Sagot, Marie-France, Walter, Maria Emilia M. T., Campos, Magnólia A., Silva, Flávia B., Silva, Marilia S., Albuquerque, Érika E. V. S., do Amaral, Alexandre M., Teixeira, Cristiane C., Mehta, Ângela, and Sá, Maria Fátima G.
- Abstract
Coffee is one of the most important commodities worldwide. For this reason, the sequencing in large scale of expressed sequence tags (ESTs) from different tissues of the coffee tree was performed and resulted in the formation of the Brazilian Coffee Genome EST database (CafEST). There is a raising interest of genetic breeding programs in developing varieties of Coffea arabica with increased resistance to nematodes, pests, and diseases. A high number of plant resistance genes (R genes) have already been isolated and classified into six categories denoted as class 1 to class 6. In this study, we show results of a screening of the coffee transcriptome database for class 3 LLR/NBS/TIR-like R gene related sequences within the C. arabica ESTs from the CafEST database. Based on searches for sequence similarities, we selected a total of 293 ESTs coding for class 3 R proteins, putatively related to disease resistance in C. arabica. Among these reads, 101 ESTs, representing the RPP4 subclass, were grouped into 56 clusters. We found 93 reads representing the RPP5 subclass, which were grouped into 46 clusters. In addition, we also found 99 reads representing the RPS4 subclass, which were grouped into 54 clusters. However, no matches were found with other subclasses of R genes (L, M, N, P, and RPP1) so far. These studies should contribute to the elucidation of the recognition and resistance cascades elicited by R genes. These results may provide relevant information to be applied on coffee breeding programs and on the development of new strategies to obtain genetic durable resistance for plants against pathogens, resulting in positive impacts on the coffee agribusiness. [ABSTRACT FROM AUTHOR]
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- 2007
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37. Extreme resistance to two Brazilian strains of Potato virus Y (PVY) in transgenic potato, cv. Achat, expressing the PVYº coat protein
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Romano, Eduardo, primary, Ferreira, Adriana T., additional, Dusi, André N., additional, Proite, Karina, additional, Buso, Jose A., additional, Ávila, Antonio C., additional, Nishijima, Marta L., additional, Nascimento, Adriana S., additional, Bravo-Almonacid, Fernando, additional, Mentaberry, Alejandro, additional, Monte, Damares, additional, Campos, Magnólia A., additional, Melo, Paulo Eduardo, additional, Cattony, Monica K., additional, and Torres, Antonio C., additional
- Published
- 2001
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38. Expression of an osmotin-like protein from Solanum nigrum confers drought tolerance in transgenic soybean.
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Weber, Ricardo Luís Mayer, Wiebke-Strohm, Beatriz, Bredemeier, Christian, Margis-Pinheiro, Márcia, de Brito, Giovani Greigh, Rechenmacher, Ciliana, Bertagnolli, Paulo, de Sá, Maria Eugênia Lisei, de Araújo Campos, Magnólia, de Amorim, Regina Maria Santos, Beneventi, Magda Aparecida, Margis, Rogério, Grossi-de-Sa, Maria Fátima, and Bodanese-Zanettini, Maria Helena
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PROTEIN expression ,SOLANUM nigrum ,DROUGHT tolerance ,ABIOTIC stress ,GENETIC transformation ,CROP genetics ,SOYBEAN ,PLANT genetics ,TRANSGENIC plants - Abstract
Background Drought is by far the most important environmental factor contributing to yield losses in crops, including soybeans [Glycine max (L.) Merr.]. To address this problem, a gene that encodes an osmotin-like protein isolated from Solanum nigrum var. americanum (SnOLP) driven by the UBQ3 promoter from Arabidopsis thaliana was transferred into the soybean genome by particle bombardment. Results Two independently transformed soybean lines expressing SnOLP were produced. Segregation analyses indicated single-locus insertions for both lines. qPCR analysis suggested a single insertion of SnOLP in the genomes of both transgenic lines, but one copy of the hpt gene was inserted in the first line and two in the second line. Transgenic plants exhibited no remarkable phenotypic alterations in the seven analyzed generations. When subjected to water deficit, transgenic plants performed better than the control ones. Leaf physiological measurements revealed that transgenic soybean plants maintained higher leaf water potential at predawn, higher net CO
2 assimilation rate, higher stomatal conductance and higher transpiration rate than non-transgenic plants. Grain production and 100-grain weight were affected by water supply. Decrease in grain productivity and 100-grain weight were observed for both transgenic and non-transgenic plants under water deficit; however, it was more pronounced for non-transgenic plants. Moreover, transgenic lines showed significantly higher 100-grain weight than non-transgenic plants under water shortage. Conclusions This is the first report showing that expression of SnOLP in transgenic soybeans improved physiological responses and yield components of plants when subjected to water deficit, highlighting the potential of this gene for biotechnological applications. [ABSTRACT FROM AUTHOR]- Published
- 2014
- Full Text
- View/download PDF
39. Diversity of Beginoviruses in white fly (Bemisia Tabaci) in Paraíba, Minas Gerais and Federal District
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COSTA, Larissa Cavalcante, CAMPOS , Magnólia de Araújo, RIBEIRO, Simone da Graça., CAMPOS, Magnólia de Araújo., COSTA, Danielly Albuquerque da., LOPES, Marcus José Conceição, and NASCIMENTO, Luciana Cordeiro do
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Diversidade de Begonovíros ,Geminiviridae ,Rolling Circle Amplification ,Amplificação por Círculo Rolante ,CIÊNCIAS BIOLÓGICAS ,MICROBIOLOGIA ,DNA-A de begomovírus ,Mosca branca ,Bemisia tabaci ,begomovirus DNA-A - Abstract
Submitted by Rosana Amâncio (rosana.amancio@ufcg.edu.br) on 2018-07-19T20:53:36Z No. of bitstreams: 1 LARISSA CAVALCANTE COSTA - DISSERTAÇÃO PPGCNBio 2015..pdf: 1987711 bytes, checksum: 9d66a83ab8d2cec764aeaa785de117d4 (MD5) Made available in DSpace on 2018-07-19T20:53:36Z (GMT). No. of bitstreams: 1 LARISSA CAVALCANTE COSTA - DISSERTAÇÃO PPGCNBio 2015..pdf: 1987711 bytes, checksum: 9d66a83ab8d2cec764aeaa785de117d4 (MD5) Previous issue date: 2015-07-31 CNPq O gênero Begomovirus pertence à família Geminiviridae de vírus que infectam plantas e são transmitidos pelo vetor mosca branca (Bemisia tabaci), também considerado umas das maiores pragas da agricultura. O presente estudo investigou a diversidade de begomovírus presente no vetor mosca branca (B. tabaci) em áreas da Paraíba, Minas Gerais e Distrito Federal. Um total de 17 amostras de moscas brancas foi coletado a partir de 12 espécies vegetaisem áreas da Paraíba, Minas Gerais e Distrito Federal e e usado para detecção do DNA-A de begomovirus por PCR, por RCA e por PCR-RCA, com primers específicos. Amplicons virais foram clonados e os clones recombinantes foram selecionados sob meio de cultura seletivo, contendo X-Gal e IPTG. A presença de amplicons foi confirmada por padrões de restrição gerados pelas enzimas EcoR I e Msp I em DNAs plasmidiais isolados dos clones selecionados e, então, sequenciados. As sequencias de DNA-A de begomovírus isoladas de moscas brancas coletadas em plantas de algodoeiro EMEPA-PB, em Emília, picão preto, barba-de-falcão, jatrofa, berinjela e malvona, presentes na área do Distrito Federal, foram analisadas quanto a porcentagem de identidade de sequencias de nucleotídeos e agrupamentos filogenéticos comparando com outras sequencias de isolados de begomovírus disponíveis no banco de dados GenBank. Como resultado, 5 espécies de begomovírus (SiYBV, CoMoV, SiMMV, BGMV e SiGLSV) evidenciaram a diversidade de begomovírus presente em moscas brancas nas áreas estudadas, mas que não necessariamente está presente nas respectivas plantas onde as moscas foram coletadas. Os primers PAL1v 1978 e PAR1c 496 descritos para detecção de DNA-A de begomovírus a partir de plantas foram eficientes para detecção específica desse componente genômico viral a partir do vetor mosca branca. A detecção específica de DNA-A do componente de begomovírus por PCR a partir do DNA total extraído de moscas brancas foi enriquecida pela amplificação por RCA. O begomovírus BGMV foi predominantemente encontrado em moscas brancas coletadas em plantas na área do Distrito Federal. A diversidade presente nos isolados dos 5 vírus identificados neste trabalho foi agrupada em 4 ramos filogenéticos suportados pela porcentagem de identidade de sequencias de nucleotídeos comparadas com sequencias dos isolados de begomovírus disponíveis no banco de dados GenBank The Begomovirus genus belongs to Geminiviridae family of viruses that infect plants and is transmitted by whitefly (Bemisia tabaci) vector, which is also considered one of the major pests of agriculture. The present study investigated the diversity of begomovirusesin the whitefly vector (B. tabaci) in areas of Paraíba, Minas Gerais and the Federal District. A total of 17 samples of whiteflies were collected from 12 plant species in areas of Paraíba, Minas Gerais and the Federal District and used for the detection of begomovirus DNA-A by PCR, RCA and RCA-PCR with specific primers. Viral amplicons were cloned and the recombinant clones were selected on selective medium containing X-Gal and IPTG. The presence of amplicons was confirmed by restriction enzyme patterns generated by EcoR I and Msp I on plasmid DNAs of selected clones isolated and then sequenced. The begomovirus DNA-A sequences isolated from whiteflies collected from cotton plants EMEPA-PB, in Emilia, black prick, beard-of-hawk, jatropha, eggplant and malvona present in the Federal District, were analyzed bynucleotide sequence identity percentage and phylogenetic groups compared to other begomovirus strain sequences available in GenBank database. As a result, five species of begomovirus (SiYBV, CoMoV, SiMMV, BGMV e SiGLSV) revealed the diversity of begomovirus present in whiteflies in the studied areas, but that is not necessarily present in the respective plants where the flies were collected. The PAL1v 1978 PAR1c 496 primers described for begomovírus DNA-A detection from plants were also efficient for detection of this specific viral genomic component from whitefly vector. The specific detection of begomovirus DNA-A component by PCR from total DNA extracted from whiteflies was enriched by amplification by RCA. The BGMV begomovirus was found predominantly in whiteflies on plants collected in the Federal District. The diversity present in strains of thefive virus identified in this work was grouped into four phylogenetic branches supported by the nucleotide sequence identity percentage compared to sequences of the begomovirus strains available in GenBank database
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- 2015
40. Remoção de nitrogênio e fósforo de lixiviado de aterro sanitário aplicando a Chlorella sp. imobilizada em matriz de alginato de cálcio
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Silva, Maria Célia Cavalcante de Paula e, Leite, Valderi Duarte, Pearson, Howard William, Oliveira, Roberto Alves de, Vich, Daniele Vital, Campos, Magnólia de Araújo, and Souza, Neyliane Costa de
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Microalgas ,Fitorremediação ,Microalgae ,Removal of nutrients ,TRATAMENTO DE AGUAS DE ABASTECIMENTO E RESIDUARIAS [ENGENHARIA SANITARIA] ,Líquido percolado ,Remoção de nutrientes ,Percolated liquid ,Phytoremediation - Abstract
Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2021-09-14T11:51:49Z No. of bitstreams: 1 PDF - Maria Célia Cavalcante de Paula e Silva.pdf: 5238939 bytes, checksum: 38aea2c31ae8f4e320eaf2c71d880252 (MD5) Approved for entry into archive by Rosalvo Andrade (rosalvo_andrade@servidor.uepb.edu.br) on 2021-12-06T23:24:20Z (GMT) No. of bitstreams: 1 PDF - Maria Célia Cavalcante de Paula e Silva.pdf: 5238939 bytes, checksum: 38aea2c31ae8f4e320eaf2c71d880252 (MD5) Made available in DSpace on 2022-01-04T13:56:03Z (GMT). No. of bitstreams: 1 PDF - Maria Célia Cavalcante de Paula e Silva.pdf: 5238939 bytes, checksum: 38aea2c31ae8f4e320eaf2c71d880252 (MD5) Previous issue date: 2020-12-29 The generation of solid urban waste represents a challenge that requires the participation of several segments to solve it. The putrescible fraction of the residues during its biodegradation generates the leachate, wastewater of high contaminating power that presents a complex matrix with emphasis on high magnitudes of total solids, N-ammonia, phosphorus, COD and recalcitrant substances. In this context, alginate immobilized alginate technology emerges as a sustainable and efficient strategy for removing pollutants from wastewater. Immobilization consists of cell retention in a particular region of the bioreactor in which chemical reactions must take place. This research investigated the phytoremediation potential of Chlorella sp. removing nutrients from landfill leachate. The leachate was collected at the João Pessoa Metropolitan Landfill and the Chlorella sp. was isolated from the leachate treatment pond system and grown in Bold’s Basal Medium. Tubular and conical bioreactors fed in batch and continuous regimes were monitored. The parameters evaluated were pH, N-ammoniacal, P-Total, ions, Chlorophyll a, dissolved oxygen, ions and turbidity. SEM and EDS microanalysis of the spheres with immobilized algae were performed. The statistical analysis of the data was carried out through a full factorial planning of three levels Box-Behnken 3^(2-0) design (BBD) combined with the response surface methodology and (ANOVA). Bioreactors fed in batches and AG / QT (alginate / chitosan) spheres obtained an average removal of 40% of ammoniacal N with average affluent concentrations of 240 mg.L^-1. In spheres with Chlorella sp. in AG (alginate) the average removals of N-ammonia were in the range of 85.3% in the 1st hour of contact time. In suspended systems, there was cell growth in the N-ammoniacal bands between 47 and 2182 mg.L^-1, with an increase of Chlorophyll a of 1500% in concentrations of 99 mg.L^-1^and removals of up to 88 mg-N in concentrations 798 mg.L-1. It was found that the increase in the percentage of leachate inhibited cell growth. In the continuous bioreactor with Chlorella sp. immobilized in AG, removals of P-total, N-ammoniacal, Na2^+, K^+ and Mg2^+ respectively of 63, 42, 28, 49 and 55% were recorded in 2-hour HRT. Phytoremediation was achieved through a combination of mechanisms including bioassimilation, precipitation as a consequence of pH and adsorption in the polymeric matrix. Thus, the results point to the potential of Chlorella sp. in the treatment of landfill leachate. A geração de resíduos sólidos urbanos representa um desafio que carece da participação de diversos segmentos para a resolução do mesmo. A fração putrescível dos resíduos durante sua biodegradação gera o lixiviado, água residuária de elevado poder contaminante que apresenta matriz complexa com destaque para elevadas magnitudes de sólidos totais, N- amoniacal, fósforo, DQO e substâncias recalcitrantes. Nesse panorama, a tecnologia das algas imobilizadas em alginato, desponta como uma estratégia sustentável e eficiente na remoção de poluentes das águas residuárias. A imobilização consiste na retenção celular em uma região particular do biorreator na qual as reações químicas devem se processar. Esta pesquisa investigou o potencial de fitorremediação por Chlorella sp. na remoção de nutrientes do lixiviado de aterro sanitário. O lixiviado foi coletado no Aterro Sanitário Metropolitano de João Pessoa e a cepa de Chlorella sp. foi isolada do sistema de lagoas de tratamento de lixiviado e cultivada em Meio Basal de Bold’s. Foram monitorados biorreatores tubulares e cônicos alimentados em regimes de batelada e contínuo. Os parâmetros avaliados foram pH, N-amoniacal, P-Total, íons, Chlorofila a, Oxigênio dissolvido, íons e turbidez. Foram realizadas as microanálises de Microscopia Eletrônica de Varredura (MEV) e Espectroscopia por Energia Dispersiva (EDS) das esferas com algas imobilizadas. A análise estatística dos dados foi realizada através de um planejamento full fatorial de três níveis Box-Behnken 3^(2-0) design (BBD) combinada com a metodologia de superfície de resposta e (ANOVA). Nos biorreatores alimentados em batelada e esferas AG/QT(alginato/quitosana) foram obtidas remoções médias de 40% de N- amoniacal com concentrações afluentes médias de 240 mg.L^-1. Em esferas com Chlorella sp. em AG(alginato) as remoções médias de N-amoniacal foram na faixa de 85,3% na 1ª hora de tempo de contato. Em sistemas suspensos, houve crescimento celular nas faixas de N-amoniacal entre 47 e 2182 mg.L^-1, com incremento de Clorofila a de 1500% em concentrações de 99 mg.L^-1 e remoções de até 88 mg-N em concentrações de 798 mg.L^-1. Foi verificado que o aumento no percentual de lixiviado inibiu o crescimento celular. No biorreator contínuo com Chlorella sp. imobilizada em AG registrou-se remoções de P-total, N-amoniacal, Na2^+, K^+ e Mg2^+ respectivas de 63, 42, 28, 49 e 55% em TDH de 2h. A Fitorremediação foi alcançada através de uma combinação de mecanismos incluindo bioassimilação, precipitação como consequência do pH e adsorção na matriz polimérica. Desta forma, os resultados apontam para o potencial da Chlorella sp. no tratamento do lixiviado de aterro sanitário.
- Published
- 2020
41. Quantitative expression of Phytophthora parasitica and citrus genes during interaction
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AZEVEDO, Thamara de Medeiros, CAMPOS, Magnólia de Araújo, DELATORRE, Plinio, and DALIO, Ronaldo José Durigan
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Root rot ,Oomycete ,Podridão de raízes ,Oomiceto ,Ciências Biológicas ,Interação planta-patógeno ,Plant-pathogen interaction - Abstract
Submitted by Rosana Amâncio (rosana.amancio@ufcg.edu.br) on 2018-07-11T20:50:26Z No. of bitstreams: 1 Dissertação Thamara - Capa Dura.pdf: 2260125 bytes, checksum: 530ae87f1e4a9200aafe1cb3102cff39 (MD5) Made available in DSpace on 2018-07-11T20:50:26Z (GMT). No. of bitstreams: 1 Dissertação Thamara - Capa Dura.pdf: 2260125 bytes, checksum: 530ae87f1e4a9200aafe1cb3102cff39 (MD5) Previous issue date: 2016-08-19 CNPq A gomose, provocada principalmente pelo oomiceto Phytophthora parasitica, é uma das mais graves doenças que acometem culturas de citros no âmbito mundial. Durante a interação, plantas induzem cascatas de sinalização a fim de induzir respostas de defesa. Contudo, P. parasitica secreta proteínas efetoras capazes de modular estas respostas por parte do hospedeiro, a fim de promover a infecção. No gênero Citrus, espécies comercialmente importantes são suscetíveis a infecção por este patógeno e a resistência a gomose é encontrada na espécie de citros Poncirus trifoliata. Considerando a escassez de informações acerca do patossistema citros-P. parasitica, o presente trabalho objetivou analisar, por meio de RT-qPCR, a expressão quantitativa de genes efetores apoplásticos e citoplasmáticos de P. parasitica e da cascata de defesa em citros, durante interações com espécies suscetíveis e resistentes, Citrus sunki e P. trifoliata, respectivamente. Dos 17 genes efetores estudados, 10 apresentaram expressão quantitativa relativa diferencial ao nível de significância induzida em P. parasitica após inoculação em raízes de P. trifoliata, sendo 06 apoplásticos e 04 citosólicos. Os perfis de expressão dos 17 genes efetores de P. parasitica apresentaram dois picos máximos de expressão, indicativos da síntese de novo desses genes ao longo dos pontos temporais de interação, sendo o acúmulo dos transcritos mais precoce sobre P. trifoliata (as 6 h.a.i.) e mais tardio sobre C. sunki (as 96 h.a.i.). Os elevados níveis de expressão de genes efetores em P. parasitica induzidos por C. sunki as 96 h.a.i. devem corresponder a fase necrotrófica de vida do oomiceto, consequentemente devido ao sucesso na penetração das células vegetais suscetíveis e acúmulo de biomassa do patógeno. A presença de hifas intracelulares no córtex de raízes de C. sunki foi abundantemente visualizada em micrografias as 96 h.a.i., a qual deve ocorrer como consequência da suscetibilidade da planta ao patógeno. Seis grupos hierárquicos de genes co-regulados foram formados a partir dos perfis de expressão dos 17 genes efetores em P. parasitica, os quais são reagrupados de modo diferente de acordo com a interação com C. sunki ou com P. trifoliata, indicando que o patógeno foi capaz de reconhecer entre hospedeiros suscetível ou resistente e sintetizar seletivamente quais efetores e em que intensidade devem ser segregados. As raízes de C. sunki expressaram 10 componentes de cascatas de resistência mediada pelo SA em resposta não bem-sucedida a infecção por P. parasitica. A supressão por P. parasitica da expressão de 05 genes de cascatas de resistência mediada pelo SA foi observada em raízes de P. trifoliata e deve indicar tentativas do patógeno de burlar com a imunidade da planta. Entretanto, a resistência de P. trifoliata a P. parasitica não deve utilizar genes envolvidos na cascata de resistência mediada pelo SA, mas sim genes PR-5 e calose sintase, envolvendo barreiras bioquímicas e estruturais. Portanto, o presente trabalho fornece uma nova visão para o entendimento acerca do processo de modulação de efetores de P. parasitica em interações suscetíveis e resistentes e, a maneira como estes hospedeiros respondem mediante interação The gummosis, mainly caused by the oomycete Phytophthora parasitica, is one of the most serious diseases affecting citrus crops worldwide. During the interaction, plants induce signaling cascades in order to induce defense responses. However, P. parasitica secrets effector proteins capable of modulating these host responses in order to promote the infection. In Citrus genus, commercially important species are susceptible to infection by this pathogen and the gummosis resistance is achieved in Poncirus trifoliata citrus species. Considering the lack of information on citrus-P. parasitica pathosystem, this study aimed to analyze, through RT-qPCR, the quantitative expression of P. parasitica effector and citrus defense genes during citrus-P. parasitica susceptible and resistant interactions, with Citrus sunki and P. trifoliata, respectively. As results, P. parasitica was able to recognize among susceptible or resistant host and selectively synthesize which effectors and in that intensity should be expressed. Of the 17 studied effector genes, 10 showed quantitative relative differential expression at significance level induced in P. parasitica after inoculation in trifoliate orange roots, being 06 apoplastics and 04 cytosolics. The expression profiles for the 17 effector genes in P. parasitica had two maximum peaks of expression, that are indicative of de novo synthesis of these genes along the time points of interaction, showing transcript accumulation earlier on P. trifoliata (at 6 h.a.i.) and later on C. sunki (at 96 h.a.i.). High levels of the effector gene expression in P. parasitica induced by C. sunki at 96 h.a.i. must match the necrotrophic phase of life of this oomycete, consequently due to their successful penetration into the susceptible plant cells and pathogen biomass accumulation. The presence of intracellular hyphae in cortex of C. sunki roots was abundantly visualized in the micrographs at 96 h.a.i., which may occur as a result of the plant susceptibility to the pathogen. Six hierarchical groups of co-regulated genes were formed from the expression profiles of the 17 effector genes in P. parasitica, which are grouped differently according to interact with C. sunki or P. trifoliata, indicating that the pathogen was able to recognize between susceptible or resistant host and selectively synthesize which effectors and in that intensity should be segregated. The roots of C. sunki expressed 10 components of the cascade resistance mediated by SA in response not successful to P. parasitica infection. The suppression by P. parasitica of the expression of 05 genes of the cascade resistance mediated by SA was found in P. trifoliata roots, and must indicate pathogen attempts to circumvent with the immunity of the plant. However, P. trifoliata resistance to P. parasitica should not use genes involved in the resistance cascade mediated by SA, but instead PR-5 and callose synthase genes, involving biochemical and estructural barriers. In conclusion, this study provides a new insight into the understanding of the effectors of modulation process of P. parasitica in susceptible and resistant interactions and how these hosts respond through interaction.
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- 2016
42. Miraculins of citrus sinensis: molecular modeling of structures and functional prediction
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CAETANO, Érica Renata Nogueira Sá, CAMPOS, Magnólia de Araújo, MAIA, Rafael Trindade, DELATORRE, Plinio, and NADVORNY, Daniela
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Kunitz Trypsin inhibitor ,homology modeling ,Inibidor de tripsina Kunitz ,Modelagem por homologia ,sweet taste receptor ,Ciências Biológicas ,Receptor de sabor doce ,Docking - Abstract
Submitted by Rosana Amâncio (rosana.amancio@ufcg.edu.br) on 2018-07-12T22:11:47Z No. of bitstreams: 1 ERICA RENATA NOGUEIRA SÁ CAETANO - DISSERTAÇÃO PPGCNBio 2016..pdf: 2506925 bytes, checksum: 2aee1b855d59914fe68902bb6ec5b3fe (MD5) Made available in DSpace on 2018-07-12T22:11:47Z (GMT). No. of bitstreams: 1 ERICA RENATA NOGUEIRA SÁ CAETANO - DISSERTAÇÃO PPGCNBio 2016..pdf: 2506925 bytes, checksum: 2aee1b855d59914fe68902bb6ec5b3fe (MD5) Previous issue date: 2016-07-14 CNPq Miraculina é uma glicoproteína que possui uma incrível propriedade de converter o sabor amargo em doce. Como a miraculina não apresenta sabor algum e tem um baixo teor calórico, esta proteína pode ser usada como adoçantes direcionados para pacientes com doenças relacionadas ao consumo excessivo de açúcar. Estudos comprovaram que membros da família de proteínas miraculinas também possuem atividade de inibidor de tripsina do tipo Kunitz, atuando como agentes naturais de defesa da planta contra pragas e predadores. Diante disso, proteínas do tipo miraculina são de grande relevância para aplicações biotecnológicas. Esse estudo teve como objetivo geral realizar a caracterização estrutural e funcional comparativa de duas miraculinas de Citrus sinensis, por meio de modelagem e docking molecular. Modelos 3D foram gerados e validados para as miraculinas CsMir1 e CsMir4, tripsina de Acryrthosiphon pisum e para os receptores de sabor doce mT1R2 e T1R3 de Mus musculus. Modelos homodiméricos foram gerados para CsMir1 e CsMir4 e modelo heterodimérico foi gerado para mT1R2-T1R3. Estudos da atividade de inibidor de tripsina foram feitos para CsMir1 e CsMir4 por interação com tripsina. Para analisar a atividade de modificação de sabor doce, foi realizada a interação das miraculinas com o receptor mT1R2-T1R3. Como resultados, os modelos dos monômeros e dímeros criados foram considerados bons modelos, válidos e confiáveis, com representações muito próximas das estruturas nativas dessas proteínas. A miraculina CsMir1, na forma monomérica ligou-se a tripsina de A. pisum e na sua forma dimérica ligou-se ao receptor heterodimérico mT1R2-T1R3 através do domínio ATD da subunidade T1R2, entretanto o potencial para as atividades de inibição de proteases e de indução ou inibição a modificação de sabor amargo/azedo em doce é menor do que para a CsMir4. A miraculina CsMir4, na sua forma monomérica ligou-se a tripsina de A. pisum, possivelmente apresentando atividade de inibição de proteases. CsMir4, na sua forma dimérica, ligou-se ao receptor heterodimérico mT1R2-T1R3, através do domínio ATD da subunidade T1R2, potencialmente apresentando atividade de indução ou inibição a modificação de sabor amargo/azedo em doce em M. musculus. Miraculins are glycoproteins that displays a remarkable property in bitter to sweet taste conversion. As miraculin does not have any taste and has a low calorie, this protein can be used as sweeteners targeted to patients with diseases related to excessive sugar consumption. Studies have shown that members of miraculins protein family also display inhibitor activity against the Kunitz trypsin, acting as natural agents of plant defense against pests and predators. In this context, miraculin proteins are of great relevance for biotechnological applications. The aim of this research was to characterize structurally and functionally two miraculins of Citrus sinensis using in silico tools. Tridimensional models were built and validated for CsMir1 and CsMir4 miraculins, Acryrthosiphon pisum trypsin and for Mus musculus mT1R2-T1R3 receptor. Homodimeric and hetrodimeric models were generated for miraculins (CsMir1, CsMir4) and mT1R2-T1R3, respectively. Molecular docking simulations were performed to investigate the trypsin inhibitory activity and taste conversion activity of CsMir1 and CsMir4. The results showed that the predicted models were reliable and presented good quality parameters. The monomeric CsMir1 miraculin bound to A. pisum trypsin, while its dimeric form bound to ATD domain of the mT1R2-T1R3, although its potential as trypsin inhibitor and bitter/sweet taste modifier were minor than that presented by its homologous CsMir4. The dimeric form of CsMir4 bound to mT1R2-T1R3 receptor in the ATD domain, which strongly suggests bitter/sweet taste modifier activity in M. musculus.
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- 2016
43. Priming of the germination and initial growth of red rice inoculated with Gluconacetobacter diazotrophicus
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Silva Filho, Antônio Manoel da, Meneses, Carlos Henrique Salvino Gadelha, Melo, Alberto Soares de, Corrêa, Élida Barbosa, and Campos, Magnólia de Araújo
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α-amilase ,GAMYB transcription factor ,α- amylase ,Fator de transcrição GAMYB ,Bactéria endofítica promotora de crescimento vegetal ,Oryza sativa ,CIENCIAS AGRARIAS ,Fosfatase ácida ,Endophytic bacteria promoting plant growth ,acid phosphatase - Abstract
Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2016-05-03T13:54:53Z No. of bitstreams: 1 PDF - Antônio Manoel da Silva Filho.pdf: 1626282 bytes, checksum: 35f4f3bebdefb1abb1e520955b76a0e8 (MD5) Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2016-07-25T19:29:57Z (GMT) No. of bitstreams: 1 PDF - Antônio Manoel da Silva Filho.pdf: 1626282 bytes, checksum: 35f4f3bebdefb1abb1e520955b76a0e8 (MD5) Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2016-07-25T19:32:57Z (GMT) No. of bitstreams: 1 PDF - Antônio Manoel da Silva Filho.pdf: 1626282 bytes, checksum: 35f4f3bebdefb1abb1e520955b76a0e8 (MD5) Made available in DSpace on 2016-07-25T19:32:58Z (GMT). No. of bitstreams: 1 PDF - Antônio Manoel da Silva Filho.pdf: 1626282 bytes, checksum: 35f4f3bebdefb1abb1e520955b76a0e8 (MD5) Previous issue date: 2016-02-18 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES The utilization of Gluconacetobacter diazotrophicus in agriculture has shown promise in optimization morphophysiological aspects, biochemical and yield of plants. The culture of red rice (Oryza sativa L.) presents great socioeconomic and environmental importance in the semi- arid northeast. The production of this culture still suffers by the not full use of appropriate technologies, due to scarcity of studies and development of technologies. Given the above, the objective of this study was to evaluate the potential effect of G. diazotrophicus on germination and initial growth of red rice.The experiment was conducted in a completely randomized design, with six treatments (SNE-seeds not soaked in water, SE H2O-seeds soaked in water for 24 hours, SE H2O + GA3 seed soaked in gibberellic acid solution for 24 hours, SE H2O + GD-seeds soaked in water for 24 + G. diazotrophicus, SE H2O + GA3 + GD-seeds soaked in gibberellic acid solution for 24 hours + G. diazotrophicus and SNE + GD-seeds not soaked in water + G. diazotrophicus) with six replicates.The concentration of gibberellic acid (GA3) used was 50 mg -1 L . Evaluated were the aspects physiological, biochemical, molecular and initial growth of red rice seedlings. Data were submitted to analysis of variance, mean test and Pearson correlation. Treatments significant effect on the growth variables, physiological, biochemical and molecular.It was verified that treatment with non-imbibed seeds inoculated with G. diazotrophicus promote increase of 28.7; 41.7; 28.7; 49.5; 69.6; 48.5; 61.5; 38.5; 46; 97; 86 and 89% for the variables: germination, germination speed index, first count, root length, shoot length, total fresh mass, total dry mass of α-amylase activity, activ acid phosphatase, expression GAMYB transcription factor, α-amylase and S-adenosyl-L-methionine (SAM) synthase, respectively, in relation to the treatment of seeds not soaked in water and not inoculated.It was concluded that the inoculation with G. diazotrophicus red rice seeds enhances the speed of germination and seedling germination, root length, shoot length, and acid phosphatase activities of α-amylase, total fresh mass, total dry mass, GAMYB expression of the transcription factor, α- amylase expression and SAM. Therefore presents great potential agronomic and biotechnology for use as growth promoter in the red rice crop, increasing the germination and early growth independently of seed imbibition. A utilização de Gluconacetobacter diazotrophicus na agricultura tem-se mostrado promissora na otimização de aspectos morfofisiológicos, bioquímicos e rendimento das plantas. Acultura do arroz vermelho(Oryza sativa L.) apresenta grande importância socioeconômica e ambiental no semiárido nordestino. Aprodução dessa cultura ainda padece pela não utilização plena de tecnologias apropriadas, devido a escassez de estudos e desenvolvimento de tecnologias. Diante do exposto, objetivou-se com este trabalho avaliar o efeito potencial da G. diazotrophicussobre a germinação e crescimento inicialde arroz vermelho. O experimento foi realizado emdelineamento inteiramente casualisado, constando de seis tratamentos (SNE-sementes não embebidas em água, SE H2O-sementes embebidas em água por 24h, SE H2O + GA3-sementes embebidas em solução de ácido giberélicopor 24h, SE H2O + GD-sementes embebidas em água por 24h + G. diazotrophicus, SE H2O + GA3 +GD-sementes embebidas em solução de ácido giberélicopor 24h + G. diazotrophicuse SNE + GD-sementes não embebidas em água + G. diazotrophicus), com seis repetições. A concentração da solução de ácido giberélico (GA3) usada -1 foi de 50 mg L . Avaliaram-se os aspectos fisiológicos, bioquímicos, moleculares e de crescimento inicial das plântulas de arroz vermelho. Os dados foram submetidos à análise de variância, teste de médias e correlação de Pearson. Os tratamentos exerceram efeito significativo sobre as variáveis de crescimento, fisiológicas,bioquímicas e moleculares. Registrou-se que o tratamento com sementes não embebidas e inoculadas com G. diazotrophicuspromoveram incrementos de 28,7; 41,7; 28,7; 49,5; 69,6; 48,5; 61,5; 38,5; 46; 97; 86 e 89% para as variáveis: germinação, índice de velocidade de germinação, primeira contagem de germinação, comprimento radicular, comprimento da parte aérea, massa fresca total, massa seca total, atividade da α-amilase, ativida da fosfatase ácida, expressão do fator de transcrição GAMYB, α- amilase e S-adenosil-L-metionina (SAM) sintetase, respectivamente, em relação ao tratamento das sementes não embebidas em água e não inoculadas. Concluiu-se que a inoculação de G. diazotrophicus em sementes de arroz vermelho aumenta a velocidade de germinação e germinação das plântulas, comprimento radicular, comprimento da parte aérea, atividade s da fosfatase ácida e α-amilase, massa fresca total, massa seca total, a expressão do fator de transcrição GAMYB, expressão de α-amilase e SAM.Portanto apresenta grande potencial agronômico e biotecnológico para aplicação como promotora de crescimento na cultura do arroz vermelho, incrementando a germinação e crescimento inicial de modo independente de embebição das sementes.
- Published
- 2016
44. Epidemiology of official accidents, State of Ceará, Brazil (2007-2013)
- Author
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BELMINO, José Franscidavid Barbosa., LEITE, Renner de Souza., MEDEIROS, Maria Franco Trindade., SANTOS, Igor Luiz Vieira de Lima., and CAMPOS, Magnólia de Araújo.
- Subjects
Serpentes ,Snake ,Zoologia ,Epidemiologia ,Ofidismo ,Envenenamento - Abstract
Submitted by Rosana Amâncio (rosana.amancio@ufcg.edu.br) on 2018-07-25T20:37:15Z No. of bitstreams: 1 JOSÉ FRANSCISDAVID BARBOSA BELMINO- DISSERTAÇÃO PPGCNBio 2015..pdf: 2603348 bytes, checksum: 2fbb701d116d617718c670099be997a9 (MD5) Made available in DSpace on 2018-07-25T20:37:15Z (GMT). No. of bitstreams: 1 JOSÉ FRANSCISDAVID BARBOSA BELMINO- DISSERTAÇÃO PPGCNBio 2015..pdf: 2603348 bytes, checksum: 2fbb701d116d617718c670099be997a9 (MD5) Previous issue date: 2015-08-28 CNPq Os casos de acidentes ofídicos são um problema de saúde pública para países de regiões tropicais. O presente estudo é uma investigação retrospectiva que descreve e analisa as características epidemiológicas dos casos de acidentes ofídicos no Estado do Ceará, Brasil, de 2007 a 2013. Os dados foram coletados na Secretaria Estadual de Saúde do Ceará, utilizando a base de dados do Sistema de Informação de Agravos de Notificação. Foram analisados um total de 4 058 casos. Os acidentes foram distribuídos em todos os meses dos anos, ocorrendo com maior frequência entre os meses de março (n = 437) a julho (n = 479). A maioria dos casos afetou homens (n = 3 275), na faixa etária entre 20 e 29 anos (n = 696), com baixo nível de escolaridade (n = 1 821), pardos (n = 2 729), residentes (n = 3 327) e trabalhadores (n = 1 360) rurais. Os casos ocorreram predominantemente na zona rural (n = 3 623) e sem relação com o trabalho (n = 1 984). O gênero Bothrops foi responsável pelo maior número de casos (n = 3 319). O pé foi região do corpo mais atingida pelas picadas (n = 2 027). A maioria das vítimas foi atendida entre 1 e 3 horas após o acidente (n = 1 718). Ocorreram mais manifestações locais (n = 3 468) que sistêmicas (n = 785). O sintoma local mais frequente foi dor (n = 3 211) e o sistêmico foram as manifestações hemorrágicas (n = 262). A maior parte dos acidentes foram classificados como leve (n = 2 463) e evoluíram para cura (n = 3 564). A soroterapia foi administrada na maioria dos casos (n = 3 534). Os acidentes ofídicos no Estado do Ceará pode ser considerado um problema de saúde pública. Treinamento adicional para os profissionais de saúde parecem ser necessários para aprimorar a sua capacidade para coletar os dados epidemiológicos, bem para melhorar o atendimento as vítimas dos acidentes ofídicos. The cases of snakebites are a public health issue for countries from tropical regions. This study is a retrospective research to describe and analyze the epidemiological characteristics of cases of snakebites in the State of Ceará, Brazil, from 2007 to 2013. Data was collected from the Injury Notification Information System database of the Health Department of Ceará. A total of 4,058 cases were analyzed. Snakebites were distributed in every month of the year, occurring most between the months from March (n = 437) to July (n = 479). Most cases affected young men (n = 3,275), aged between 20 and 29 years old (n = 696), with low educational level (n = 1,821), brown skin (n = 2,729), rural residents (n = 3,327) and workers (n = 1,360). The cases occurred predominantly in rural areas (n = 3,623) and unrelated to the work (n = 1 984). The genus Bothrops was responsible for the largest number of cases (n = 3,319). The part of the body most affected by the bites was the foot (n = 2,027). Most of the victims was attended between 1 and 3 hours after the accident (n = 1,718). There were more local events (n = 3,468) that systemic (n = 785). The most frequent site symptom was pain (n = 3,211) and systemic were hemorrhagic manifestations (n = 262). Most cases were classified as mild (n = 2,463) and were cured (n = 3,564). The antivenom was administered in most cases (n = 3,534). The snakebites in the State of Ceará may be considered an environmental health problem. Additional training for health professionals appear to be necessary to enhance their ability to collect epidemiological data and to improve the care of victims of snakebites.
- Published
- 2015
45. Expressão de genes envolvidos com o desenvolvimento do botão floral do algodoeiro (Gossypium hirsutum H.) por meio de RT-PCR e RT-qPCR
- Author
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Batista, Vandré Guevara Lyra, Lima, Liziane Maria de, Santos, Roseane Cavalcanti dos, Campos, Magnólia de Araújo, and Fernandes, Pedro Dantas
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GenBank ,Genética vegetal ,Algodoeiro ,CIENCIAS AGRARIAS [CNPQ] - Abstract
Made available in DSpace on 2015-09-25T12:21:26Z (GMT). No. of bitstreams: 1 PDF - Vandre Guevara Lyra Batista.pdf: 915279 bytes, checksum: db4c1c0fb945a68ca720e9082f021bfc (MD5) Previous issue date: 2012-08-22 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior The use of public database, generated from genome projects, such as NCBI, CottonDB, SUCEST FORESTs, among others, is of great importance for molecular studies, especially those related to gene expression, since, in possession of sequences deposited, it is possible to isolate new genes or prospect and know their role in various ontogenetic stages. In plants, a stage of great demand for knowledge is related to reproduction. Currently, several studies with Arabidopsis thaliana involving identification and characterization of genes associated with reproductive organs, especially the bud phenology, has enabled major advances in our understanding of functions and can correlate them with other species. For plant species possessing large commodities such as cotton, these results are relevant, considering that several studies developed with this aim culture studies that enhance the expression quantitative trait dependent physiology of reproduction. In this study, we investigated the temporal and spatial expression of genes that are expressed in cotton bud by semiquantitative RT-PCR and qPCR. We selected four genes with a history of expression in floral buds (cottonbud7, cottonbud8, and cottonbud9 cottonbud10) and used for primer design. Tissue samples of flower buds (2-8 mm, 10-12 mm and 14-20 mm), leaves, stems and roots were collected and used for total RNA extraction and cDNA synthesis. The results of gene expression analyzes showed expression of selected genes in all tissues investigated, though genes cottonbud7 cottonbud10 and showed a stable expression in all phases investigated bud. It was observed further that the cottonbud10 showed a slightly higher expression in floral bud, when compared to other genes. The analysis of gene expression via cottonbud10 qPCR corroborate the results obtained with the RT-PCR. The results obtained in this study provide information about genes to promising research projects involving the improvement program for cotton. A utilização de banco de dados públicos, gerados a partir de projetos genoma, como o NCBI, CottonDB, SUCEST, FORESTs, entre outros, é de grande relevância para estudos moleculares, especialmente aos relacionados a expressão gênica, uma vez que, de posse das sequências depositadas, é possível prospectar ou isolar novos genes e conhecer sua função em várias fases ontogenéticas. Em plantas, uma das fases de grande demanda de conhecimento é a relacionada com a reprodução. Atualmente, vários estudos com Arabidopsis thaliana envolvendo identificação e caracterização de genes associados aos órgãos reprodutores, especialmente a fenologia do botão floral, tem possibilitado grandes avanços no conhecimento de funções, podendo correlacioná-las em outras espécies. Para espécies vegetais detentoras de grandes commodities, como algodão, tais resultados são relevantes, considerando que várias pesquisas desenvolvidas com essa cultura visam estudos que potencializem a expressão de características quantitativas dependentes da fisiologia de reprodução. Neste trabalho, investigou-se a expressão temporal e espacial de genes que se expressam em botão floral de algodoeiro por meio de RTPCR semiquantitativa e qPCR. Foram selecionados quatro genes com histórico prévio de expressão em botão floral (cottonbud7, cottonbud8, cottonbud9 e cottonbud10) e utilizados para desenho de primers. Amostras de tecidos de botões florais (2-8 mm; 10-12 mm e 14-20 mm), folhas, hastes e raízes foram coletadas e utilizadas para a extração de RNA total e síntese de cDNA. Os resultados das análises de expressão gênica mostraram expressão dos genes selecionados em todos os tecidos investigados, contudo os genes cottonbud7 e cottonbud10 apresentaram estabilidade da expressão em todas as fases investigadas do botão floral. Pôde-se observar ainda, que o cottonbud10 apresentou nível de expressão levemente superior em botão floral, quando comparado aos demais genes. As análises de expressão do gene cottonbud10 via qPCR corroboram com os resultados obtidos com o RT-PCR. Os resultados obtidos neste trabalho, fornecem informações sobre genes promissores para trabalhos de pesquisa envolvendo o programa de melhoramento do algodão.
- Published
- 2012
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