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190 results on '"Reis, Veronica Massena"'

2. Nitrospirillum viridazoti sp. nov., an Efficient Nitrogen-Fixing Species Isolated from Grasses

Author

Baldani, José Ivo, dos Santos Ferreira, Natália, Shwab, Stefan, Reis, Veronica Massena, de Barros Soares, Luis Henrique, Simões-Araujo, Jean Luiz, dos Santos Dourado, Fernanda, Bach, Evelise, Camacho, Natália Neutzling, de Oliveira, Amanda Maura, Alves, Bruno José Rodrigues, Silva, Andréia Loviane, Rossi, Carolina Nachi, de Oliveira Junior, Alberto Fernandes, and Zilli, Jerri Edson

Published
2024
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18. The Family Rhodospirillaceae

Author

Baldani, José Ivo, Videira, Sandy Sampaio, dos Santos Teixeira, Kátia Regina, Reis, Veronica Massena, de Oliveira, André Luiz Martinez, Schwab, Stefan, de Souza, Emanuel Maltempi, Pedraza, Raúl O., Baldani, Vera Lúcia Divan, Hartmann, Anton, Rosenberg, Eugene, editor, DeLong, Edward F., editor, Lory, Stephen, editor, Stackebrandt, Erko, editor, and Thompson, Fabiano, editor

Published
2014
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33. Comparison of N uptake of maize inoculated with two diazotrophic bacterial species grown under two N levels.

Author

Carvalho Dias, Albiane, Alves, Gabriela Cavalcanti, Da Silva, Thamires Ferreira Rodrigues, Alves, Bruno José Rodrigues, Santos, Leandro Azevedo, and Reis, Veronica Massena

Subjects
AZOSPIRILLUM brasilense, PLANT inoculation, PLANT drying, FACTORIAL experiment designs, SPECIES
Abstract

We investigated how plant inoculation with two diazotrophic bacteria would influence the modulation of root architecture and parameters associated with N uptake rate under high and low NO3− availability. The treatments were arranged in a 2 × 3 factorial design, the first factor being N dose (0.3 and 3.0 mM, or low and high N, respectively) and the second being inoculation with Herbaspirillum seropedicae strain ZAE94 (Hs-ZAE94), Azospirillum brasilense strain Sp245 (Ab-Sp245) and an uninoculated control. The parameters evaluated were: root architecture, mineral N in the growth solution, soluble metabolites, and activities of two N enzymes, dry mass, N accumulation, and the ratio of plant dry mass to N accumulation (NUE). Plant parameters improved with higher N availability. Only under high N, the inoculation with Ab-Sp245 brought about a change in root architecture with an improvement in root surface area, which was in agreement with an increased plant dry matter, N accumulation, and NUE, which was not always observed on either sampling date, 24 and 32 days after transfer to the hydroponic system. The shift in root architecture and the maintenance of N uptake per unit of root area by inoculation with Ab-Sp245 was likely the main effect. [ABSTRACT FROM AUTHOR]

Published
2022
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44. Optimization of culture medium and growth conditions of the plant growth-promoting bacterium Herbaspirillum seropedicae BR11417 for its use as an agricultural inoculant using response surface methodology (RSM)

Author

Scheidt, Wagner, primary, dos Santos Pedroza, Izadora Chauke Piovezan, additional, Fontana, Juliane, additional, da Cruz Meleiro, Luiz Augusto, additional, de Barros Soares, Luis Henrique, additional, and Reis, Veronica Massena, additional

Published
2019
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48. Nitrogen fixing bacteria in the family Acetobacteraceae and their role in agriculture

Author

Reis, Veronica Massena and Teixeira, Kátia Regina dos Santos

Subjects
food and beverages, Agriculture, Review, Biological nitrogen fixation, Plant Roots, Plant Leaves, Gluconacetobacter diazotrophicus, Gluconacetobacter, Nitrogen Fixation, Acetic acid bacteria, Rhizosphere, Acetobacteraceae, Endophytes, Plant growth promotion, Biomass, Phylogeny, Soil Microbiology
Abstract

For centuries, the Acetobacteraceae is known as a family that harbors many species of organisms of biotechnological importance for industry. Nonetheless, since 1988 representatives of this family have also been described as nitrogen fixing bacteria able to plant growth promotion by a variety of mechanisms. Nitrogen fixation is a biological process that guarantees that the atmospheric N2 is incorporated into organic matter by several bacterial groups. Most representatives of this group, also known as diazotrophic, are generally associated with soil rhizosphere of many plants and also establishing a more specific association living inside roots, leaves, and others plants tissues as endophyte. Their roles as plant growth-promoting microorganisms are generally related to increase in plant biomass, phosphate and other mineral solubilization, and plant pathogen control. Here, we report many of these plant growth-promoting processes related to nitrogen fixing species already described in Acetobacteraceae family, especially Gluconacetobacter diazotrophicus and their importance to agriculture. In addition, a brief review of the state of art of the phylogenetics, main physiological and biochemical characteristics, molecular and functional genomic data of this group of Acetobacteraceae is presented.

Published
2015

49. Inoculation of diazotrophic bacteria modifies the growth rate and grain yield of maize at different levels of nitrogen supply.

Author

Breda, Farley Alexandre da Fonseca, Alves, Gabriela Cavalcanti, Lopez, Bruna Daniela Ortiz, de Aragão, Alison Rocha, Araújo, Adelson Paulo, and Reis, Veronica Massena

Subjects
GRAIN yields, LEAF area index, AZOSPIRILLUM brasilense, LEMNA minor, CORN growth
Abstract

This work intended to evaluate the contribution of single inoculation of diazotrophic bacteria Herbaspirillum seropedicae or Azospirillum brasilense on growth and yield of maize crop at different levels of N fertilization. Two field experiments were carried out in the summer and winter seasons. Factorial design combined four fertilization levels (0, 50, 100 and 150 kg N ha−1) and three seed inoculations (non-inoculation, strains Hs-ZAE94 or Ab-Sp245), with four replications. Shoot dry matter, leaf area index, and N accumulation were evaluated in weekly samplings, and grain yield measured at maturity. Most expressive responses of inoculation were observed in the summer crop, with minor effects in the winter crop when growth and yield were lower. In the summer, inoculation increased shoot dry matter and leaf area of maize plants, enhancing crop growth rate, and increased N accumulated by shoots, particularly at low levels of N supply. In the summer, Hs-ZAE94 increased grain yield at the levels of 0, 50 and 100 kg N ha−1, and Ab-Sp245 at 100 kg N ha−1, as compared to non-inoculation. Inoculation with Hs-ZAE94 associated with 50 kg N ha−1 provided similar grain yield than the non-inoculation with 150 kg N ha−1, improving N use efficiency. [ABSTRACT FROM AUTHOR]

Published
2020
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50. Application of a mixture of five diazotrophs on sugarcane cultivated in the south of Brazil.

Author

Matoso, Ester Schiavon, Reis, Veronica Massena, Avancini, Anita Ribas, Timm Simon, Elis Daiani, De Marco, Edenara, and Delmar dos Anjos e Silva, Sergio

Subjects
*SUGARCANE, *NITROGEN fixation, *LEAF area
Abstract

Sugarcane production in Brazil for the 2019/20 harvest is estimated at approximately 615 million tons. However, in the state of Rio Grande do Sul, it is estimated at only 42.5 thousand tons. It is assumed that the use of diazotrophic bacteria can contribute to the expansion of sugarcane cultivation in the state through increased productivity; hence, this study aimed to evaluate the effects of diazotrophs on the growth of sugarcane. The study was conducted using sugarcane varieties: RB867515, RB92579, RB966928, and RB975932 that were either treated with diazotrophic bacteria or left as a control. The application of diazotrophic bacteria resulted in increased leaf area and stem number in variety RB867515 (cane plant cultivation cycle), and an increase in the relative chlorophyll content of all the varieties of sugarcane except of RB92579. Furthermore, most varieties responded positively in terms of biomass, dry matter, total nitrogen, and soluble solids. These results suggest that the application of diazotrophs assists in the growth and development of sugarcane varieties in Rio Grande do Sul. [ABSTRACT FROM AUTHOR]

Published
2020
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