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| ANTUNES, G. dos R.; SANTANA, S. R. A.; ESCOBAR, I. E. C.; BRASIL, M. da S.; ARAUJO, G. G. L. de; VOLTOLINI, T. V.; FERNANDES JUNIOR, P. I.. |
| The study of plant growth-promoting bacteria (PGPB) can identify outstanding bacteria for crops. For forage grasses adapted to drylands, the selection of PGPB can increase the field performance of pastures. The aim of this study was to isolate, and characterise at molecular, biochemical and symbiotic levels, diazotrophic bacteria obtained from buffel grass (Cenchrus ciliaris), sorghum (Sorghum bicolor) and Tifton 85 (Cynodon spp.) from Brazilian semi-arid region fields. Fieldgrown plants were collected, and the roots were surface-disinfected, crushed and inoculated in a semi-solid medium. After the formation and confirmation of microaerophilic pellicles, the bacteria were isolated and purified. All bacterial isolates were subjected to nifH gene... |
| Tipo: Artigo de periódico |
Palavras-chave: Semiárido; Bactérias diazotróficas; Crescimento vegetal; Seleção de linhagem; Fixação biológica de nitrogênio; PGPB; Gramínea Forrageira; Caatinga; Bactéria; Capim Buffel; Sorgo; Forragem; Forage grasses. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113997 |
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| SOUZA, M. S. T.; BAURA, V. A. de; SANTOS, S. A.; FERNANDES JUNIOR, P. I.; REIS JUNIOR, F. B. dos; MARQUES, M. R.; PAGGI, G. M.; BRASIL, M. da S.. |
| A sustainable alternative to improve yield and the nutritive value of forage is the use of plant growth promoting bacteria (PGPB) that release nutrients, synthesize plant hormones and protect against phytopathogens (among other mechanisms). Azospirillum genus is considered an important PGPB, due to the beneficial effects observed when inoculated in several plants. The aim of this study was to evaluate the diversity of new Azospirillum isolates and select bacteria according to the plant growth promotion ability in three forage species from the Brazilian Pantanal floodplain: Axonopus purpusii, Hymenachne amplexicaulis and Mesosetum chaseae. The identification of bacterial isolates was performed using specific primers for Azospirillum in PCR reactions and... |
| Tipo: Artigo de periódico |
Palavras-chave: FBN; Fixação biológica de nitrogênio; Biological nitrogen fixation; Diazotrophic bacteria.; Planta; Biodiversidade; Bacteria; Graminea; Azospirillum brasilense.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1068877 |
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| BRASIL, M. da S.; SOUZA, M. S. T. de; OLIVEIRA, I. B. de; DANIEL, O.; SANTOS, S. A.; MARQUES, M. R.; SILVA, W. M. da. |
| Floodplain areas are driven by flood pulse and with consequence, flood gradient are formed, such as, lakes, wetlands and dry areas. And this gradient is one of the most important forcing functions for animal and plant ecology that areas. The aim of this study is testing the hypothesis of the flood gradient in the bacteria diazotrophic association with grasses in their roots and shoots. The study was realized in the Pantanal of the Mato Grosso do Sul, in two periods, rainy (March, 2009) and dry (August, 2010) and the samples of grasses were made in different flood gradients areas: in dry, in seasonally flood and in permanent flooded. The number of bacteria in the roots and stems were counted using the most probable number method using the semi-solid media... |
| Tipo: Separatas |
Palavras-chave: Floodplain; Flood.; Inundacao; Graminea; Grasses.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057971 |
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| FERNANDES JUNIOR, P. I.; AIDAR, S. de T.; MORGANTE, C. V.; GAVA, C. A. T.; ZILLI, J. E.; SOUZA, L. S. B. de; MARINHO, R. de C. N.; NÓBREGA, R. S. A.; BRASIL, M. da S.; SEIDO, S. L.; MARTINS, L. M. V.. |
| Plant species that naturally occur in the brazilian Caatinga (xeric shrubland) adapt in several ways to these harsh conditions, and that can be exploited to increase crop production. among the strategic adaptations to confront low water availability, desiccation tolerance stands out. Up to now, the association of those species with beneficial soil microorganisms is not well understood. The aim of this study was to characterize Tripogon spicatus diazotrophic bacterial isolates from the Caatinga biome and evaluate their ability to promote plant growth in rice. Sixteen bacterial isolates were studied in regard to their taxonomic position by partial sequencing of the 16S rRna gene, putative diazotrophic capacity, in vitro indole-acetic acid (IAA) production... |
| Tipo: Artigo de periódico |
Palavras-chave: Semiárido; Bioma Caatinga; Fixação biológica de nitrogênio; Bactérias diazotróficas; Plantas tolerantes à dessecação; Biological nitrogen fixation; Tolerant plants.; Inoculant; Diazotrophic bacteria; Solo; Fixação de nitrogênio; Inoculante; Bactéria; Caatinga; Soil.. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1023976 |
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