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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
21/05/2021 |
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Data da última atualização: |
21/05/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATOS, G. F. de; ROUWS, L. F. M.; ARAUJO, J. L. S. de; BALDANI, J. I. |
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Afiliação: |
GUSTAVO FEITOSA DE MATOS, UFRRJ; LUC FELICIANUS MARIE ROUWS, CNPAB; JEAN LUIZ SIMOES DE ARAUJO, CNPAB; JOSE IVO BALDANI, CNPAB. |
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Título: |
Evolution and function of nitrogen fixation gene clusters in sugarcane associated Bradyrhizobium strains. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Environmental Microbiology, Published Online 15 May 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Bradyrhizobium spp. are well known to mediate biological nitrogen xation (BNF) as microsymbionts inhabiting nodules on leguminous plants. However, they may also contribute to plant growth via freeliving N2 xation (FLNF) in association with nonlegumes. Notably, several Bradyrhizobium strains from sugarcane roots display FLNF ctivity. Among them, Bradyrhizobium sacchari is a legume symbiotic species, whereas strains AG48 and M12 are non-symbiotic. In the present study, a phylogenomic pproach was applied to study peculiarities of these and other Bradyrhizobium strains with respect to N xation (nif) gene content in order to reveal genetic features that enable FNLF in Bradyrhizobium spp. All FLNF strains carry an ancestral ?non-symbiotic? nifgene cluster (NSC). B. sacchari also contains a second ?symbiotic? nif-gene cluster (SC), a characteristic observed in only three of 156 evaluated genomes. B. sacchari stood out and presented a high level of sequence divergence between individual nif-gene
homologues and we discuss scenarios for the evolutionary origin of these clusters. The transcript level of NSC nifH gene increased during FLNF, when compared to symbiotic conditions. The data suggest that sugarcane roots harbor diverse Bradyrhizobium spp. that are genetically adapted to a dynamic environment where leguminous and non-leguminous host plants are alternately available. |
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Palavras-Chave: |
Biological nitrogen fixation; Fabaceae family. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02000naa a2200181 a 4500
001 2131954
005 2021-05-21
008 2021 bl uuuu u00u1 u #d
100 1 $aMATOS, G. F. de
245 $aEvolution and function of nitrogen fixation gene clusters in sugarcane associated Bradyrhizobium strains.$h[electronic resource]
260 $c2021
520 $aBradyrhizobium spp. are well known to mediate biological nitrogen xation (BNF) as microsymbionts inhabiting nodules on leguminous plants. However, they may also contribute to plant growth via freeliving N2 xation (FLNF) in association with nonlegumes. Notably, several Bradyrhizobium strains from sugarcane roots display FLNF ctivity. Among them, Bradyrhizobium sacchari is a legume symbiotic species, whereas strains AG48 and M12 are non-symbiotic. In the present study, a phylogenomic pproach was applied to study peculiarities of these and other Bradyrhizobium strains with respect to N xation (nif) gene content in order to reveal genetic features that enable FNLF in Bradyrhizobium spp. All FLNF strains carry an ancestral ?non-symbiotic? nifgene cluster (NSC). B. sacchari also contains a second ?symbiotic? nif-gene cluster (SC), a characteristic observed in only three of 156 evaluated genomes. B. sacchari stood out and presented a high level of sequence divergence between individual nif-gene homologues and we discuss scenarios for the evolutionary origin of these clusters. The transcript level of NSC nifH gene increased during FLNF, when compared to symbiotic conditions. The data suggest that sugarcane roots harbor diverse Bradyrhizobium spp. that are genetically adapted to a dynamic environment where leguminous and non-leguminous host plants are alternately available.
653 $aBiological nitrogen fixation
653 $aFabaceae family
700 1 $aROUWS, L. F. M.
700 1 $aARAUJO, J. L. S. de
700 1 $aBALDANI, J. I.
773 $tEnvironmental Microbiology, Published Online 15 May 2021.
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| 9. |  | ANTÔNIO, C. S.; ARAUJO, J. L. S. de; REIS, V. M. Genetic evaluation of diazotrophic bacteria associated with sugarcane planted in Alagoas state. In: INTERNATIONAL SYMPOSIUM ON BIOLOGICAL NITROGEN WITH NON-LEGUMES, 12.; INTERNATIONAL INCT SYMPOSIUM ON NITROGEN BIOLOGICAL FIXATION, 2., 03 a 8 de outubro, 2010, Búzios, RJ. Book of abstracts... Seropédica: Embrapa Agrobiologia, 2010. Sll. 07| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 17. | | BAHIA, P. P.; ARAUJO, J. L. S. de; SOARES, L. H. de B.; REIS, V. M. Desenvolvimento de bioprocesso para produção de inoculante de cana-de-açúcar através do co-cultivo de duas espécies de herbaspirillum In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 32.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 16.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 14.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 11., FERTBIO 2016. Goiânia. Rumo aos novos desafios: anais. Goiânia: UFG, 2016.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 19. | | SILVA, F. V.; ARAÚJO, J. L. S. de; RUMJANEK, N. G.; SILVA JÚNIOR, J. P. Caracterização de Bradyrhizobium da região amazônica por ardra e sequenciamento do 16S rDNA. In: ENCONTRO NACIONAL DE MICROBIOLOGIA AMBIENTAL, 11., SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 10., 2008, Fortaleza. Resumos... Fortaleza, 2008.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
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