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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
13/04/2015 |
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Data da última atualização: |
19/06/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CERRO, P. del; ROLLA-SANTOS, A. A. P.; GOMES, D. F.; MARKS, B. B.; PÉREZ-MONTAÑO, F.; RODRÍGUEZ-CARVAJAL, M. A.; NAKATANI, A. S.; GIL-SERRANO, A.; MEGÍAS, M.; OLLERO, F. J.; HUNGRIA, M. |
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Afiliação: |
Pablo del Cerro; AMANDA ALVES PAIVA ROLLA SANTOS, CNPSo - Pós-graduanda; DOUGLAS FABIANO GOMES, CNPSo - Pós-graduando; BETTINA BERQUÓ MARKS, CNPSo - Pós-graduanda; FRANCISCO PÉREZ-MONTAÑO; MIGUEL ÁNGEL RODRÍGUEZ-CARVAJAL; ANDRÉ SHIGUEYOSHI NAKATANI; ANTONIO GIL-SERRANO; MANUEL MEGÍAS; FRANCISCO JAVIER OLLERO; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Regulatory nodD1 and nodD2 genes of Rhizobium tropici strain CIAT 899 and their roles in the early stages of molecular signaling and host-legume nodulation. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
BMC Genomics, London, [S. l.], v. 16, n. 251, Mar. 2015. 13 p. |
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ISSN: |
1471-2164 |
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DOI: |
10.1186/s12864-015-1458-8 |
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Idioma: |
Inglês |
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Conteúdo: |
Nodulation and symbiotic nitrogen fixation are mediated by several genes, both of the host legume and of the bacterium. The rhizobial regulatory nodD gene plays a critical role, orchestrating the transcription of the other nodulation genes. Rhizobium tropici strain CIAT 899 is an effective symbiont of several legumes?with an emphasis on common bean (Phaseolus vulgaris)?and is unusual in carrying multiple copies of nodD, the roles of which remain to be elucidated. Results: Phenotypes, Nod factors and gene expression of nodD1 and nodD2 mutants of CIAT 899 were compared with those of the wild type strain, both in the presence and in the absence of the nod-gene-inducing molecules apigenin and salt (NaCl). Differences between the wild type and mutants were observed in swimming motility and IAA (indole acetic acid) synthesis. In the presence of both apigenin and salt, large numbers of Nod factors were detected in CIAT 899, with fewer detected in the mutants. nodC expression was lower in both mutants; differences in nodD1 and nodD2 expression were observed between the wild type and the mutants, with variation according to the inducing molecule, and with a major role of apigenin with nodD1 and of salt with nodD2. In the nodD1 mutant, nodulation was markedly reduced in common bean and abolished in leucaena (Leucaena leucocephala) and siratro (Macroptilium atropurpureum), whereas a mutation in nodD2 reduced nodulation in common bean, but not in the other two legumes. Conclusion: Our proposed model considers that full nodulation of common bean by R. tropici requires both nodD1 and nodD2, whereas, in other legume species that might represent the original host, nodD1 plays the major role. In general, nodD2 is an activator of nod-gene transcription, but, in specific conditions, it can slightly repress nodD1. nodD1 and nodD2 play other roles beyond nodulation, such as swimming motility and IAA synthesis. MenosNodulation and symbiotic nitrogen fixation are mediated by several genes, both of the host legume and of the bacterium. The rhizobial regulatory nodD gene plays a critical role, orchestrating the transcription of the other nodulation genes. Rhizobium tropici strain CIAT 899 is an effective symbiont of several legumes?with an emphasis on common bean (Phaseolus vulgaris)?and is unusual in carrying multiple copies of nodD, the roles of which remain to be elucidated. Results: Phenotypes, Nod factors and gene expression of nodD1 and nodD2 mutants of CIAT 899 were compared with those of the wild type strain, both in the presence and in the absence of the nod-gene-inducing molecules apigenin and salt (NaCl). Differences between the wild type and mutants were observed in swimming motility and IAA (indole acetic acid) synthesis. In the presence of both apigenin and salt, large numbers of Nod factors were detected in CIAT 899, with fewer detected in the mutants. nodC expression was lower in both mutants; differences in nodD1 and nodD2 expression were observed between the wild type and the mutants, with variation according to the inducing molecule, and with a major role of apigenin with nodD1 and of salt with nodD2. In the nodD1 mutant, nodulation was markedly reduced in common bean and abolished in leucaena (Leucaena leucocephala) and siratro (Macroptilium atropurpureum), whereas a mutation in nodD2 reduced nodulation in common bean, but not in the other two legumes. Conclusion: Our p... Mostrar Tudo |
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Thesagro: |
Fixação de nitrogênio. |
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Thesaurus Nal: |
Nitrogen fixation. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/122208/1/regulatory-nodD1.pdf
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Marc: |
LEADER 02861naa a2200289 a 4500
001 2013361
005 2017-06-19
008 2015 bl uuuu u00u1 u #d
022 $a1471-2164
024 7 $a10.1186/s12864-015-1458-8$2DOI
100 1 $aCERRO, P. del
245 $aRegulatory nodD1 and nodD2 genes of Rhizobium tropici strain CIAT 899 and their roles in the early stages of molecular signaling and host-legume nodulation.$h[electronic resource]
260 $c2015
520 $aNodulation and symbiotic nitrogen fixation are mediated by several genes, both of the host legume and of the bacterium. The rhizobial regulatory nodD gene plays a critical role, orchestrating the transcription of the other nodulation genes. Rhizobium tropici strain CIAT 899 is an effective symbiont of several legumes?with an emphasis on common bean (Phaseolus vulgaris)?and is unusual in carrying multiple copies of nodD, the roles of which remain to be elucidated. Results: Phenotypes, Nod factors and gene expression of nodD1 and nodD2 mutants of CIAT 899 were compared with those of the wild type strain, both in the presence and in the absence of the nod-gene-inducing molecules apigenin and salt (NaCl). Differences between the wild type and mutants were observed in swimming motility and IAA (indole acetic acid) synthesis. In the presence of both apigenin and salt, large numbers of Nod factors were detected in CIAT 899, with fewer detected in the mutants. nodC expression was lower in both mutants; differences in nodD1 and nodD2 expression were observed between the wild type and the mutants, with variation according to the inducing molecule, and with a major role of apigenin with nodD1 and of salt with nodD2. In the nodD1 mutant, nodulation was markedly reduced in common bean and abolished in leucaena (Leucaena leucocephala) and siratro (Macroptilium atropurpureum), whereas a mutation in nodD2 reduced nodulation in common bean, but not in the other two legumes. Conclusion: Our proposed model considers that full nodulation of common bean by R. tropici requires both nodD1 and nodD2, whereas, in other legume species that might represent the original host, nodD1 plays the major role. In general, nodD2 is an activator of nod-gene transcription, but, in specific conditions, it can slightly repress nodD1. nodD1 and nodD2 play other roles beyond nodulation, such as swimming motility and IAA synthesis.
650 $aNitrogen fixation
650 $aFixação de nitrogênio
700 1 $aROLLA-SANTOS, A. A. P.
700 1 $aGOMES, D. F.
700 1 $aMARKS, B. B.
700 1 $aPÉREZ-MONTAÑO, F.
700 1 $aRODRÍGUEZ-CARVAJAL, M. A.
700 1 $aNAKATANI, A. S.
700 1 $aGIL-SERRANO, A.
700 1 $aMEGÍAS, M.
700 1 $aOLLERO, F. J.
700 1 $aHUNGRIA, M.
773 $tBMC Genomics, London, [S. l.]$gv. 16, n. 251, Mar. 2015. 13 p.
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Registro original: |
Embrapa Soja (CNPSO) |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
23/03/2017 |
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Data da última atualização: |
30/03/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
BRASIL, O. O.; MOREIRA, N. H.; CONCEIÇÃO, F. F. C. de B. da; NASCIMENTO, N. V. do; RAMOS, A. F. |
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Afiliação: |
OSCAR OLIVEIRA BRASIL, UNIVERSIDADE DE BRASÍLIA.; NATHALIA HACK MOREIRA, UNIVERSIDADE DE BRASÍLIA.; FÁBIA FERNANDA CARDOSO DE BARROS DA CONCEIÇÃO, FACULDADES INTEGRADAS DA UNIÃO EDUCACIONAL DO PLANALTO CENTRAL.; NORMANDES VIEIRA DO NASCIMENTO, Cenargen; ALEXANDRE FLORIANI RAMOS, Cenargen. |
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Título: |
Relato da produção e sobrevivência embrionária de ovelhas bergamácias superovuladas apresentando regressão prematura de corpo lúteo. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 4., 2016, Curitiba. Recursos genéticos no Brasil: a base para o desenvolvimento sustentável: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2016. |
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Idioma: |
Português |
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Palavras-Chave: |
TE. |
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Thesagro: |
Conservação; Fertilidade. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/158013/1/Anais-CBRG-2016-pg-101.pdf
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Marc: |
LEADER 00784nam a2200181 a 4500
001 2067523
005 2023-03-30
008 2016 bl uuuu u00u1 u #d
100 1 $aBRASIL, O. O.
245 $aRelato da produção e sobrevivência embrionária de ovelhas bergamácias superovuladas apresentando regressão prematura de corpo lúteo.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 4., 2016, Curitiba. Recursos genéticos no Brasil: a base para o desenvolvimento sustentável: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos$c2016
650 $aConservação
650 $aFertilidade
653 $aTE
700 1 $aMOREIRA, N. H.
700 1 $aCONCEIÇÃO, F. F. C. de B. da
700 1 $aNASCIMENTO, N. V. do
700 1 $aRAMOS, A. F.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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