Endophytic Diazotrophic Bacteria
Mostrando 13-19 de 19 artigos, teses e dissertações.
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13. Diversidade de rizóbios em Florestas de Araucária no Estado de São Paulo / Rhizobia diversity in Araucaria Forests in São Paulo State, Brazil
Araucaria angustifolia (B.) Ktz has a great social, environmental and economic importance to south and southeastern Brazil, although ecosystems supporting this species have been degraded by human activity, making it an endangered species. The nitrogen cycle has vital importance for life and has a special role in the development and upkeep of forests. The nit
Publicado em: 2007
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14. INITROGEN FIXATION BY DIAZOTROPHIC BACTERIA IN FLOODED RICE CULTIVARS / FIXAÇÃO DE NITROGÊNIO POR BACTÉRIAS DIAZOTRÓFICAS EM CULTIVARES DE ARROZ IRRIGADO
Rice is a very important culture in the South of Brazil, with productivity mean of 6 t ha-1, requiring large amounts of nitrogen. The biological nitrogen fixation (BNF) has already been established for legumes and in gramineous plants, microrganisms of the genus Azospirillum, Herbaspirillum, Gluconacetobacter and Burkholderia have potential to BNF and growth
Publicado em: 2006
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15. Comparative molecular analysis of Herbaspirillum strains by RAPD, RFLP, and 16S rDNA sequencing
Herbaspirillum spp. are endophytic diazotrophic bacteria associated with important agricultural crops. In this work, we analyzed six strains of H. seropedicae (Z78, M2, ZA69, ZA95, Z152, and Z67) and one strain of H. rubrisubalbicans (M4) by restriction fragment length polymorphism (RFLP) using HindIII or DraI restriction endonucleases, random amplified poly
Genetics and Molecular Biology. Publicado em: 2003-12
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16. Nitrogen metabolism in rice plants (Oryza sativa, L.) inoculated with endophytic diazotrophic bacteria / Metabolismo de nitrogênio em plantas de arroz (Oryza sativa L.) em associação com bactérias diazotróficas endofíticas
O arroz (Oryza sativa L.) é colonizado por bactérias diazotróficas que, podem atuar como promotoras de crescimento das raízes, assim como melhorar a nutrição da planta através do N2 fixado biologicamente. No entanto, estas associações podem modificar a fisiologia das plantas, uma vez que as bactérias diazotróficas para fixarem o nitrogênio necess
Publicado em: 2003
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17. Coffea arabica L., a new host plant for Acetobacter diazotrophicus, and isolation of other nitrogen-fixing acetobacteria.
Acetobacter diazotrophicus was isolated from coffee plant tissues and from rhizosphere soils. Isolation frequencies ranged from 15 to 40% and were dependent on soil pH. Attempts to isolate this bacterial species from coffee fruit, from inside vesicular-arbuscular mycorrhizal fungi spores, or from mealybugs (Planococcus citri) associated with coffee plants we
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18. Endophytic Colonization and In Planta Nitrogen Fixation by a Herbaspirillum sp. Isolated from Wild Rice Species
Nitrogen-fixing bacteria were isolated from the stems of wild and cultivated rice on a modified Rennie medium. Based on 16S ribosomal DNA (rDNA) sequences, the diazotrophic isolates were phylogenetically close to four genera: Herbaspirillum, Ideonella, Enterobacter, and Azospirillum. Phenotypic properties and signature sequences of 16S rDNA indicated that th
American Society for Microbiology.
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19. Endophytic Colonization of Rice by a Diazotrophic Strain of Serratia marcescens
Six closely related N2-fixing bacterial strains were isolated from surface-sterilized roots and stems of four different rice varieties. The strains were identified as Serratia marcescens by 16S rRNA gene analysis. One strain, IRBG500, chosen for further analysis showed acetylene reduction activity (ARA) only when inoculated into media containing low levels o
American Society for Microbiology.