23 results on '"Pérez-Pérez, Julia"'
Search Results
2. Metabolic crosstalk between hydroxylated monoterpenes and salicylic acid in tomato defense response against bacteria
- Author
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Pérez-Pérez, Julia, primary, Minguillón, Samuel, additional, Kabbas-Piñango, Elías, additional, Payá, Celia, additional, Campos, Laura, additional, Rodríguez-Concepción, Manuel, additional, Espinosa-Ruiz, Ana, additional, Rodrigo, Ismael, additional, Bellés, José María, additional, López-Gresa, María Pilar, additional, and Lisón, Purificación, additional
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- 2024
- Full Text
- View/download PDF
3. Paleogenomic insights into the red complex bacteria Tannerella forsythia in Pre-Hispanic and Colonial individuals from Mexico
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Bravo-Lopez, Miriam, Villa-Islas, Viridiana, Arriaga, Carolina Rocha, Villaseñor-Altamirano, Ana B., Guzmán-Solís, Axel, Sandoval-Velasco, Marcela, Wesp, Julie K., Alcantara, Keitlyn, López-Corral, Aurelio, Gómez-Valdés, Jorge, Mejía, Elizabeth, Herrera, Alberto, Meraz-Moreno, Alejandro, de la Luz Moreno-Cabrera, Maria, Moreno-Estrada, Andrés, Nieves-Colón, Maria A., Olvera, Joel, Pérez-Pérez, Julia, Iversen, Katrine Højholt, Rasmussen, Simon, Sandoval, Karla, Zepeda, Gabriela, and Ávila-Arcos, María C.
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- 2020
4. Tomato geranylgeranyl diphosphate synthase isoform 1 is involved in the stress-triggered production of diterpenes in leaves and strigolactones in roots
- Author
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European Commission, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Generalitat Valenciana, EMBO, Ezquerro, Miguel [0000-0002-3051-5502], Li, Changsheng [0000-0002-9579-4127], Pérez-Pérez, Julia [0000-0001-9448-0700], Burbano-Erazo, Esteban [0000-0001-5056-9893], Barja, M Victoria [0000-0002-3846-4885], Wang, Yanting [0000-0003-1970-4158], Dong, Lemeng [0000-0002-1435-1907], Lisón, Purificación [0000-0002-1662-8084], López-Gresa, M Pilar [0000-0001-9251-0160], Bouwmeester, Harro [0000-0003-0907-2732], Rodríguez-Concepción, Manuel [0000-0002-1280-2305], Ezquerro, Miguel, Li, Changsheng, Pérez-Pérez, Julia, Burbano-Erazo, Esteban, Barja, M Victoria, Wang, Yanting, Dong, Lemeng, Lisón, Purificación, López-Gresa, M Pilar, Bouwmeester, Harro, European Commission, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Generalitat Valenciana, EMBO, Ezquerro, Miguel [0000-0002-3051-5502], Li, Changsheng [0000-0002-9579-4127], Pérez-Pérez, Julia [0000-0001-9448-0700], Burbano-Erazo, Esteban [0000-0001-5056-9893], Barja, M Victoria [0000-0002-3846-4885], Wang, Yanting [0000-0003-1970-4158], Dong, Lemeng [0000-0002-1435-1907], Lisón, Purificación [0000-0002-1662-8084], López-Gresa, M Pilar [0000-0001-9251-0160], Bouwmeester, Harro [0000-0003-0907-2732], Rodríguez-Concepción, Manuel [0000-0002-1280-2305], Ezquerro, Miguel, Li, Changsheng, Pérez-Pérez, Julia, Burbano-Erazo, Esteban, Barja, M Victoria, Wang, Yanting, Dong, Lemeng, Lisón, Purificación, López-Gresa, M Pilar, and Bouwmeester, Harro
- Abstract
Carotenoids are photoprotectant pigments and precursors of hormones such as strigolactones (SL). Carotenoids are produced in plastids from geranylgeranyl diphosphate (GGPP), which is diverted to the carotenoid pathway by phytoene synthase (PSY). In tomato (Solanum lycopersicum), three genes encode plastid-targeted GGPP synthases (SlG1 to SlG3) and three genes encode PSY isoforms (PSY1 to PSY3). Here, we investigated the function of SlG1 by generating loss-of-function lines and combining their metabolic and physiological phenotyping with gene co-expression and co-immunoprecipitation analyses. Leaves and fruits of slg1 lines showed a wild-type phenotype in terms of carotenoid accumulation, photosynthesis, and development under normal growth conditions. In response to bacterial infection, however, slg1 leaves produced lower levels of defensive GGPP-derived diterpenoids. In roots, SlG1 was co-expressed with PSY3 and other genes involved in SL production, and slg1 lines grown under phosphate starvation exuded less SLs. However, slg1 plants did not display the branched shoot phenotype observed in other SL-defective mutants. At the protein level, SlG1 physically interacted with the root-specific PSY3 isoform but not with PSY1 and PSY2. Our results confirm specific roles for SlG1 in producing GGPP for defensive diterpenoids in leaves and carotenoid-derived SLs (in combination with PSY3) in roots.
- Published
- 2023
5. Signaling mechanisms and agricultural applications of (Z)-3-Hexenyl Butyrate-mediated stomatal closure
- Author
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Payá, Celia, primary, Belda-Palazón, Borja, additional, Vera-Sirera, Francisco, additional, Pérez-Pérez, Julia, additional, Jordá, Lucia, additional, Rodrigo, Ismael, additional, Bellés, José, additional, López-Gresa, M Pilar, additional, and Lisón, Purificación, additional
- Published
- 2023
- Full Text
- View/download PDF
6. Metabolic crosstalk between hydroxylated monoterpenes and salicylic acid in tomato defence response against Pseudomonas syringae pv tomato
- Author
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Pérez-Pérez, Julia, primary, Minguillón, Samuel, additional, Kabbas-Piñango, Elías, additional, Payá, Celia, additional, Campos, Laura, additional, Rodriguez-Concepcion, Manuel, additional, Rodrigo, Ismael, additional, Bellés, José María, additional, López-Gresa, M Pilar, additional, and Lisón, Purificación, additional
- Published
- 2023
- Full Text
- View/download PDF
7. Supporting Information of the article Tomato geranylgeranyl diphosphate synthase isoform 1 is involved in the stress-triggered production of diterpenes in leaves and strigolactones in roots
- Author
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Ezquerro, Miguel, Li, Changsheng, Pérez-Pérez, Julia, Burbano-Erazo, Esteban, Barja, M Victoria, Wang, Yanting, Dong, Lemeng, Lisón, Purificación, López-Gresa, M Pilar, Bouwmeester, Harro, Ezquerro, Miguel, Li, Changsheng, Pérez-Pérez, Julia, Burbano-Erazo, Esteban, Barja, M Victoria, Wang, Yanting, Dong, Lemeng, Lisón, Purificación, López-Gresa, M Pilar, and Bouwmeester, Harro
- Published
- 2023
8. Tomato geranylgeranyl diphosphate synthase isoform 1 is involved in the stress‐triggered production of diterpenes in leaves and strigolactones in roots.
- Author
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Ezquerro, Miguel, Li, Changsheng, Pérez‐Pérez, Julia, Burbano‐Erazo, Esteban, Barja, M. Victoria, Wang, Yanting, Dong, Lemeng, Lisón, Purificación, López‐Gresa, M. Pilar, Bouwmeester, Harro J., and Rodríguez‐Concepción, Manuel
- Subjects
STRIGOLACTONES ,DITERPENES ,GENERATING functions ,BACTERIAL diseases ,CAROTENOIDS - Abstract
Summary: Carotenoids are photoprotectant pigments and precursors of hormones such as strigolactones (SL). Carotenoids are produced in plastids from geranylgeranyl diphosphate (GGPP), which is diverted to the carotenoid pathway by phytoene synthase (PSY). In tomato (Solanum lycopersicum), three genes encode plastid‐targeted GGPP synthases (SlG1 to SlG3) and three genes encode PSY isoforms (PSY1 to PSY3).Here, we investigated the function of SlG1 by generating loss‐of‐function lines and combining their metabolic and physiological phenotyping with gene co‐expression and co‐immunoprecipitation analyses.Leaves and fruits of slg1 lines showed a wild‐type phenotype in terms of carotenoid accumulation, photosynthesis, and development under normal growth conditions. In response to bacterial infection, however, slg1 leaves produced lower levels of defensive GGPP‐derived diterpenoids. In roots, SlG1 was co‐expressed with PSY3 and other genes involved in SL production, and slg1 lines grown under phosphate starvation exuded less SLs. However, slg1 plants did not display the branched shoot phenotype observed in other SL‐defective mutants. At the protein level, SlG1 physically interacted with the root‐specific PSY3 isoform but not with PSY1 and PSY2.Our results confirm specific roles for SlG1 in producing GGPP for defensive diterpenoids in leaves and carotenoid‐derived SLs (in combination with PSY3) in roots. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
9. Estudio integral de un taller Posclásico en el Cerro San Lucas, Valle de Teotihuacan
- Author
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Barba Pingarrón, Luis, Pérez Pérez, Julia, Ortiz Butrón, Agustín, and Blancas Vázquez, Jorge
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- 2015
- Full Text
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10. Tomato geranylgeranyl diphosphate synthase isoform 1 specifically interacts with phytoene synthase isoform 3 to produce strigolactones in tomato roots
- Author
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Ezquerro, Miguel, primary, Li, Changsheng, additional, Barja, M. Victoria, additional, Burbano-Erazo, Esteban, additional, Pérez-Pérez, Julia, additional, Wang, Yanting, additional, Dong, Lemeng, additional, Lisón, Purificación, additional, López-Gresa, M. Pilar, additional, Bouwmeester, Harro J., additional, and Rodríguez-Concepción, Manuel, additional
- Published
- 2022
- Full Text
- View/download PDF
11. Improved Medicago sativa Nodulation under Stress Assisted by Variovorax sp. Endophytes
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Universidad de Sevilla. Departamento de Microbiología y Parasitología, Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Ministerio de Ciencia e Innovación (MICIN). España, Flores Duarte, Noris J., Pérez Pérez, Julia, Navarro Torre, Salvadora, Mateos Naranjo, Enrique, Redondo Gómez, Susana, Pajuelo Domínguez, Eloísa, Rodríguez Llorente, Ignacio David, Universidad de Sevilla. Departamento de Microbiología y Parasitología, Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Ministerio de Ciencia e Innovación (MICIN). España, Flores Duarte, Noris J., Pérez Pérez, Julia, Navarro Torre, Salvadora, Mateos Naranjo, Enrique, Redondo Gómez, Susana, Pajuelo Domínguez, Eloísa, and Rodríguez Llorente, Ignacio David
- Abstract
Legumes are the recommended crops to fight against soil degradation and loss of fertility because of their known positive impacts on soils. Our interest is focused on the identification of plant-growth-promoting endophytes inhabiting nodules able to enhance legume growth in poor and/or degraded soils. The ability of Variovorax paradoxus S110T and Variovorax gossypii JM-310T to promote alfalfa growth in nutrient-poor and metal-contaminated estuarine soils was studied. Both strains behaved as nodule endophytes and improved in vitro seed germination and plant growth, as well as nodulation in co-inoculation with Ensifer medicae MA11. Variovorax ameliorated the physiological status of the plant, increased nodulation, chlorophyll and nitrogen content, and the response to stress and metal accumulation in the roots of alfalfa growing in degraded soils with moderate to high levels of contamination. The presence of plant-growth-promoting traits in Variovorax, particularly ACC deaminase activity, could be under the observed in planta effects. Although the couple V. gossypii-MA11 reported a great benefit to plant growth and nodulation, the best result was observed in plants inoculated with the combination of the three bacteria. These results suggest that Variovorax strains could be used as biofertilizers to improve the adaptation of legumes to degraded soils in soil-recovery programs.
- Published
- 2022
12. Remote sensing detection of potential sites in a prehispanic domestic agricultural terrace system in cerro San Lucas, Teotihuacan, Mexico
- Author
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Pérez-Pérez, Julia, de Tapia, Emily McClung, Barba-Pingarrón, Luis, Gama-Castro, Jorge E., and Peralta-Higuera, Armando
- Published
- 2012
13. Improved Medicago sativa Nodulation under Stress Assisted by Variovorax sp. Endophytes
- Author
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Flores-Duarte, Noris J., primary, Pérez-Pérez, Julia, additional, Navarro-Torre, Salvadora, additional, Mateos-Naranjo, Enrique, additional, Redondo-Gómez, Susana, additional, Pajuelo, Eloísa, additional, and Rodríguez-Llorente, Ignacio D., additional
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- 2022
- Full Text
- View/download PDF
14. Estudio del modo de acción del α-terpineol y su relación con la respuesta defensiva mediada por ácido salicílico en plantas de tomate frente a la bacteria Pseudomonas syringae
- Author
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Pérez Pérez, Julia
- Subjects
Respuesta defensiva ,Transgenic plants ,Monoterpenoides ,Defensive response ,Monoterpenos ,Compuestos orgánicos volátiles ,Phenolic compounds ,Máster Universitario en Biotecnología Molecular y Celular de Plantas-Màster Universitari en Biotecnologia Molecular i Cel·Lular de Plantes ,Tomate ,Monoterpenoids ,Organic compounds ,Volatile compounds ,Monoterpenes ,BIOQUIMICA Y BIOLOGIA MOLECULAR ,Plantas transgénicas ,Compuestos fenólicos ,Bacterias - Abstract
[ES] En respuesta a un estrés biótico, las plantas sintetizan compuestos que limitan el crecimiento de los patógenos. Estos compuestos pueden actuar de forma indirecta, como moléculas señal activando las defensas vegetales. Tal es el caso de algunos compuestos orgánicos volátiles (VOCs). Un análisis metabolómico no dirigido permitió la identificación de varios VOCs diferenciales, tales como el monoterpenoide hidroxilado α-terpineol, emitidos por las plantas de tomate de la variedad ‘Rio Grande’ en respuesta a una infección avirulenta causada por la bacteria Pseudomonas syringae pv tomato (Pst; López-Gresa et al., 2017). Asimismo, se comprobó que plantas transgénicas 35S:MTS1, que sobre-expresan la monoterpeno sintasa MTS1, sobre-producen monoterpenoides hidroxilados, tales como el α-terpineol. A su vez, dichas plantas emiten menores niveles de metil-salicilato, un derivado del ácido salicílico (SA) que es la principal hormona implicada en estreses de tipo biótico (Minguillón, 2018). Dichos resultados sugerían una posible relación entre la ruta de los monoterpenoides y la del SA. En este Trabajo Fin de Máster hemos profundizado en el estudio del modo de acción del α-terpineol. Se ha comprobado que este compuesto es capaz de provocar el cierre estomático de forma independiente al SA, activar la transcripción de los genes encargados de codificar proteínas defensivas, aumentar la resistencia frente a infecciones con Pst y alterar los niveles de etileno en plantas de tomate. Estos resultados confirman el papel fundamental de los monoterpenoides en la activación de la respuesta defensiva en plantas de tomate y apoyan la importancia de los VOCs en la resistencia frente a enfermedades. Por otra parte, se ha comprobado que existe una conexión entre la vía del metileritrol fosfato (MEP), de la que derivan los monoterpenoides, y la ruta del SA, mediante estudios de expresión diferencial de genes, de acumulación de metabolitos, de apertura estomática y de resistencia frente a Pst en plantas transgénicas que presentan niveles alterados de emisión de α-terpineol (35S:MTS1 y RNAi:MTS1). Dicha conexión podría ocurrir a través del 2-C-metil-d-eritritol-2,4-ciclodifosfato (MEcPP), que produciría la activación del gen ICS, que codifica la enzima implicada en la biosíntesis del 90% del SA en las plantas, puesto que empleando un inhibidor de la ruta MEP se ha observado la inhibición de la expresión de dicho gen. Los resultados del presente Trabajo de Fin de Máster parecen indicar que existe un cross- talk negativo entre la respuesta defensiva mediada por los monoterpenoides y la mediada por SA. De esta forma, tratamientos exógenos con α-terpineol mejoran la resistencia de plantas de tomate frente a Pst, mientras que la modificación de la producción endógena de monoterpenoides lleva consigo una alteración en los niveles de SA, produciendo efectos contrarios sobre la respuesta defensiva., [En] Under biotic stress, plants synthesize compounds that interfere with pathogens growth. They can act indirectly as signaling molecules, triggering defensive responses. Volatile organic compounds (VOCs) belong to this group. Using a non targered metabolomic analysis we identified VOCs that were differentially emitted by ‘Rio Grande’ tomato variety in respond to an avirulent infection with Pseudomonas syringae pv tomato, including the hydroxylated monoterpenoid α-terpineol (Pst; López-Gresa et al., 2017). Furthermore, we confirmed that transgenic plants 35S:MTS1 overexpressing the monoterpene synthase MTS1 overproduced hydroxylated monoterpenoids such as α-terpineol. Besides, these plants emitted lower levels of methyl salicilate which is implicated in biotic strees (Minguillón, 2018). These results suggest a connection between the monoterpenoids and the salicylic acid (SA) biosynthesis pathway. This Project has the aim to identify the mode of action of α-terpineol. We observed that treatments with this compound close the stomata in a SA-independent manner, activate the transcription of defensive genes, and enhance the resistance upon a virulent infection with Pst. These results confirm the key role of monoterpenoids in the activation of the defensive respond and support the importance of VOCs in the resistance of plants. Moreover, we proved that there is a connection between the MEP pathway, leading to the production of monoterpenoids, and the biosynthesis of SA. For this purpose, we performed analysis of differential expression of genes, metabolomics analysis, stomata aperture analysis and resistance test in transgenic plants with altered levels of monoterpenoids (35S:MTS1 and RNAi:MTS1). This connection could be caused through the MEcPP-dependent activation of ICS, the key gene for SA biosynthesis. Thus, we observed a possible cross-talk between the production of monoterpenoids and the main hormone of the plants defensive response SA. Chemical treatment with α- terpineol improve the tomato plant resistance upon a virulent infection whilst the modification of the monoterpenoid endogenous production produces an alteration in SA levels causing contrary effects in the defensive response.
- Published
- 2022
15. Degradación ambiental en el valle Teotihuacan : evidencias geológicas y paleopedológicas
- Author
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Rivera-Uria, Ma. Yazmín, Sedov, Sergey, Solleiro-Rebolledo, Elizabeth, Pérez-Pérez, Julia, McClung, Emily, González, Alfredo, and Gama-Castro, Jorge
- Published
- 2007
16. Supplementary Figures S1-S6 from Paleogenomic insights into the red complex bacteria Tannerella forsythia in Pre-Hispanic and Colonial individuals from Mexico
- Author
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Bravo-Lopez, Miriam, Villa-Islas, Viridiana, Rocha, Carolina, Altamirano, Ana B. Villaseñor, Guzmán-Solís, Axel, Sandoval-Velasco, Marcela, Wesp, Julie K., Keitlyn Alcantara, Corral, Aurelio López, Valdés, Jorge Gómez, Mejía, Elizabeth, Herrera, Alberto, Moreno, Alejandro Meraz, Cabrera, Maria De La Luz Moreno, Moreno-Estrada, Andrés, Nieves-Colón, Maria A., Olvera, Joel, Pérez-Pérez, Julia, Iversen, Katrine Højholt, Rasmussen, Simon, Sandoval, Karla, Zepeda, Gabriela, and Ávila-Arcos, María C.
- Subjects
stomatognathic diseases - Abstract
The ‘red complex’ is an aggregate of three oral bacteria (Tannerella forsythia, Porphyromonas gingivalis and Treponema denticola) responsible for severe clinical manifestation of periodontal disease. Here, we report the first direct evidence of ancient Tannerella forsythia DNA in dentin and dental calculus samples from archaeological skeletal remains that span from Pre-Hispanic to Colonial period in Mexico. We recovered 12 partial ancient T. forsythia genomes and observed a distinct phylogenetic placement of samples, suggesting that the strains present in Pre-Hispanic individuals likely arrived with the first human migrations to the Americas and that new strains were introduced with the arrival of European and African populations in the sixteenth century. We also identified instances of the differential presence of genes between periods in the T. forsythia ancient genomes, with certain genes present in Pre-Hispanic individuals and absent in Colonial individuals, and vice versa. This study highlights the potential for studying ancient T. forsythia genomes to unveil past social interactions through analysis of disease transmission. Our results illustrate the long-standing relationship between this oral pathogen and its human host, while also unveiling key evidence to understand its evolutionary history in Pre-Hispanic and Colonial Mexico.This article is part of the theme issue ‘Insights into health and disease from ancient biomolecules'.
- Published
- 2020
- Full Text
- View/download PDF
17. Description of the samples analyzed in this study and the data obtained from Paleogenomic insights into the red complex bacteria Tannerella forsythia in Pre-Hispanic and Colonial individuals from Mexico
- Author
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Bravo-Lopez, Miriam, Villa-Islas, Viridiana, Rocha, Carolina, Altamirano, Ana B. Villaseñor, Guzmán-Solís, Axel, Sandoval-Velasco, Marcela, Wesp, Julie K., Keitlyn Alcantara, Corral, Aurelio López, Valdés, Jorge Gómez, Mejía, Elizabeth, Herrera, Alberto, Moreno, Alejandro Meraz, Cabrera, Maria De La Luz Moreno, Moreno-Estrada, Andrés, Nieves-Colón, Maria A., Olvera, Joel, Pérez-Pérez, Julia, Iversen, Katrine Højholt, Rasmussen, Simon, Sandoval, Karla, Zepeda, Gabriela, and Ávila-Arcos, María C.
- Subjects
stomatognathic diseases - Abstract
The ‘red complex’ is an aggregate of three oral bacteria (Tannerella forsythia, Porphyromonas gingivalis and Treponema denticola) responsible for severe clinical manifestation of periodontal disease. Here, we report the first direct evidence of ancient Tannerella forsythia DNA in dentin and dental calculus samples from archaeological skeletal remains that span from Pre-Hispanic to Colonial period in Mexico. We recovered 12 partial ancient T. forsythia genomes and observed a distinct phylogenetic placement of samples, suggesting that the strains present in Pre-Hispanic individuals likely arrived with the first human migrations to the Americas and that new strains were introduced with the arrival of European and African populations in the sixteenth century. We also identified instances of the differential presence of genes between periods in the T. forsythia ancient genomes, with certain genes present in Pre-Hispanic individuals and absent in Colonial individuals, and vice versa. This study highlights the potential for studying ancient T. forsythia genomes to unveil past social interactions through analysis of disease transmission. Our results illustrate the long-standing relationship between this oral pathogen and its human host, while also unveiling key evidence to understand its evolutionary history in Pre-Hispanic and Colonial Mexico.This article is part of the theme issue ‘Insights into health and disease from ancient biomolecules'.
- Published
- 2020
- Full Text
- View/download PDF
18. San Lucas, un altepemaitl en el señorío del Acolhuacan
- Author
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Pérez Pérez, Julia, primary
- Published
- 2013
- Full Text
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19. El nuevo expediente de dominio para la inmatriculación de fincas del artículo 203 de la Ley Hipotecaria
- Author
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Pérez Pérez, Julia, Guilarte Gutiérrez, Vicente, and Universidad de Valladolid. Facultad de Derecho
- Subjects
Expediente de dominio ,Legislación hipotecaria ,Inmatriculación de fincas - Abstract
El objetivo de este trabajo es analizar la reforma que ha sufrido la tradicional legislación hipotecaria en el año 2015 por las leyes 15/2015 de Jurisdicción Voluntaria y, especialmente, por la Ley 13/2015 de Reforma de la Ley Hipotecaria y de la Ley del Catastro Inmobiliario. Estudiaremos en profundidad la modificación experimentada en el actual artículo 203 de la Ley Hipotecaria (anterior artículo 201) que trata el expediente de dominio, un procedimiento cuya finalidad es otorgar al propietario de una finca un título que acredite la adquisición del dominio de la misma. La acreditación otorgada por el expediente de dominio puede ser utilizada para diferentes fines como: ser la base para inmatricular una finca en el Registro de la Propiedad, reanudar el tracto registral interrumpido o hacer rectificaciones en la descripción y representación de las fincas. Nos centraremos en el expediente de dominio como sistema de inmatriculación de fincas en el Registro de la Propiedad, ya que así es como se contempla por el artículo 203 de la Ley Hipotecaria. Finalmente, haremos una valoración de la utilidad y de las ventajas e inconvenientes ha traído consigo la modificación de dicho procedimiento., Grado en Derecho y Grado en Administración y Dirección de Empresas
- Published
- 2019
20. Desarrollo de un negocio online de fotografías de eventos deportivos: definición de la oferta y principales decisiones comerciales
- Author
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Pérez Pérez, Julia, Rodríguez Escudero, Ana Isabel, and Universidad de Valladolid. Facultad de Ciencias Económicas y Empresariales
- Subjects
Estudios de mercado ,Negocio ,Comercio electrónico ,5311.05 Marketing (Comercialización) ,Eventos ,Empresas nuevas - Valoración ,5311.06 Estudio de Mercado ,Fotografía ,Venta online - Abstract
Mi finalidad en este trabajo es aplicar los conocimientos adquiridos durante mis estudios en el grado de Administración y Dirección de Empresas para investi-gar si es posible convertir un hobby en una fuente complementaria de ingresos para una unidad familiar. Para ello, voy a plantear el desarrollo de un negocio online de venta de fotografías de eventos deportivos. Los parámetros básicos del proyecto son tres: –la venta online, a precios competitivos, –la realización de fotografías de calidad desde ubicaciones idóneas, y –los deportes de equipo y eventos deportivos. Establecidos estos parámetros, procederemos a analizar la situación de la que partimos (DAFO) y a realizar un ejercicio de bechmarking utilizando como referencia otras webs de fotografías deportivas. Posteriormen-te, definiremos la oferta centrándonos en el producto y en la página web, identi-ficaremos el mercado al que nos dirigimos y concretaremos los objetivos que perseguimos. Conocidos los objetivos, acotaremos y precisaremos algunas de las principales decisiones comerciales para este negocio. En concreto, habla-remos de la marca, la selección de la plataforma web que utilizaremos como principal canal de venta del producto, el precio y la publicidad en las redes so-ciales. Por último, realizaremos un balance de los ingresos y gastos para ver la viabilidad financiera del negocio, My purpose with this project is to apply the knowledge acquired during my Business Administration and Management degree to investigate if it is possible to transform a hobby into a complementary income source. With this aim, I am going to present the implementation of an online business which commercializes sporting events’ photos through the Internet. The base parameters are three: –the online sell, at competitive prices, –of quality photos taken from perfect locations, –of team’s sports and sport’s events. Once established this parameters, we will analyze our starting point (SWOT analysis) and we will do a benchmarking practice using as a reference other sporting’s photography websites. After that, we will define the offer based on the product and the web, we will analyze the market and fix our strategic objectives. Based on this result, we will fix our business decisions. In detail, the brand, how to select the web (our main sales channel), the price, and the promotion in social networks. Finally, we will analyze the future income and expenses involved with the project., Departamento de Organización de Empresas y Comercialización e Investigación de Mercados, Grado en Derecho y Grado en Administración y Dirección de Empresas
- Published
- 2019
21. Signalling mechanisms and agricultural applications of (Z)-3-hexenyl butyrate-mediated stomatal closure
- Author
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Payá, Celia, Belda-Palazón, Borja, Vera-Sirera, Francisco, Pérez-Pérez, Julia, Jordá, Lucía, Rodrigo, Ismael, Bellés, José María, López-Gresa, María Pilar, and Lisón, Purificación
- Abstract
Biotic and abiotic stresses can severely limit crop productivity. In response to drought, plants close stomata to prevent water loss. Furthermore, stomata are the main entry point for several pathogens. Therefore, the development of natural products to control stomata closure can be considered a sustainable strategy to cope with stresses in agriculture. Plants respond to different stresses by releasing volatile organic compounds. Green leaf volatiles, which are commonly produced across different plant species after tissue damage, comprise an important group within volatile organic compounds. Among them, (Z)-3-hexenyl butyrate (HB) was described as a natural inducer of stomatal closure, playing an important role in stomatal immunity, although its mechanism of action is still unknown. Through different genetic, pharmacological, and biochemical approaches, we here uncover that HB perception initiates various defence signalling events, such as activation of Ca2+permeable channels, mitogen-activated protein kinases, and production of Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-mediated reactive oxygen species. Furthermore, HB-mediated stomata closure was found to be independent of abscisic acid biosynthesis and signalling. Additionally, exogenous treatments with HB alleviate water stress and improve fruit productivity in tomato plants. The efficacy of HB was also tested under open field conditions, leading to enhanced resistance against Phytophthoraspp. and Pseudomonas syringaeinfection in potato and tomato plants, respectively. Taken together, our results provide insights into the HB signalling transduction pathway, confirming its role in stomatal closure and plant immune system activation, and propose HB as a new phytoprotectant for the sustainable control of biotic and abiotic stresses in agriculture.
- Published
- 2024
- Full Text
- View/download PDF
22. Signalling mechanisms and agricultural applications of ( Z )-3-hexenyl butyrate-mediated stomatal closure.
- Author
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Payá C, Belda-Palazón B, Vera-Sirera F, Pérez-Pérez J, Jordá L, Rodrigo I, Bellés JM, López-Gresa MP, and Lisón P
- Abstract
Biotic and abiotic stresses can severely limit crop productivity. In response to drought, plants close stomata to prevent water loss. Furthermore, stomata are the main entry point for several pathogens. Therefore, the development of natural products to control stomata closure can be considered a sustainable strategy to cope with stresses in agriculture. Plants respond to different stresses by releasing volatile organic compounds. Green leaf volatiles, which are commonly produced across different plant species after tissue damage, comprise an important group within volatile organic compounds. Among them, ( Z )-3-hexenyl butyrate (HB) was described as a natural inducer of stomatal closure, playing an important role in stomatal immunity, although its mechanism of action is still unknown. Through different genetic, pharmacological, and biochemical approaches, we here uncover that HB perception initiates various defence signalling events, such as activation of Ca
2+ permeable channels, mitogen-activated protein kinases, and production of Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-mediated reactive oxygen species. Furthermore, HB-mediated stomata closure was found to be independent of abscisic acid biosynthesis and signalling. Additionally, exogenous treatments with HB alleviate water stress and improve fruit productivity in tomato plants. The efficacy of HB was also tested under open field conditions, leading to enhanced resistance against Phytophthora spp. and Pseudomonas syringae infection in potato and tomato plants, respectively. Taken together, our results provide insights into the HB signalling transduction pathway, confirming its role in stomatal closure and plant immune system activation, and propose HB as a new phytoprotectant for the sustainable control of biotic and abiotic stresses in agriculture., Competing Interests: None declared., (© The Author(s) 2024. Published by Oxford University Press on behalf of Nanjing Agricultural University.)- Published
- 2023
- Full Text
- View/download PDF
23. Paleogenomic insights into the red complex bacteria Tannerella forsythia in Pre-Hispanic and Colonial individuals from Mexico.
- Author
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Bravo-Lopez M, Villa-Islas V, Rocha Arriaga C, Villaseñor-Altamirano AB, Guzmán-Solís A, Sandoval-Velasco M, Wesp JK, Alcantara K, López-Corral A, Gómez-Valdés J, Mejía E, Herrera A, Meraz-Moreno A, Moreno-Cabrera ML, Moreno-Estrada A, Nieves-Colón MA, Olvera J, Pérez-Pérez J, Iversen KH, Rasmussen S, Sandoval K, Zepeda G, and Ávila-Arcos MC
- Subjects
- Archaeology, Genomics, Gram-Negative Bacterial Infections microbiology, History, 15th Century, History, 16th Century, History, 17th Century, History, 18th Century, History, Ancient, History, Medieval, Humans, Mexico, Periodontitis microbiology, Genome, Bacterial, Gram-Negative Bacterial Infections history, Periodontitis history, Tannerella forsythia genetics
- Abstract
The 'red complex' is an aggregate of three oral bacteria ( Tannerella forsythia , Porphyromonas gingivalis and Treponema denticola ) responsible for severe clinical manifestation of periodontal disease. Here, we report the first direct evidence of ancient T. forsythia DNA in dentin and dental calculus samples from archaeological skeletal remains that span from the Pre-Hispanic to the Colonial period in Mexico. We recovered twelve partial ancient T. forsythia genomes and observed a distinct phylogenetic placement of samples, suggesting that the strains present in Pre-Hispanic individuals likely arrived with the first human migrations to the Americas and that new strains were introduced with the arrival of European and African populations in the sixteenth century. We also identified instances of the differential presence of genes between periods in the T. forsythia ancient genomes, with certain genes present in Pre-Hispanic individuals and absent in Colonial individuals, and vice versa . This study highlights the potential for studying ancient T. forsythia genomes to unveil past social interactions through analysis of disease transmission. Our results illustrate the long-standing relationship between this oral pathogen and its human host, while also unveiling key evidence to understand its evolutionary history in Pre-Hispanic and Colonial Mexico. This article is part of the theme issue 'Insights into health and disease from ancient biomolecules'.
- Published
- 2020
- Full Text
- View/download PDF
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