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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
28/09/2022 |
Data da última atualização: |
07/10/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
AMARAL, M. B.; LOPES, T. dos S.; FEDER, C. B.; RIBEIRO, T. G.; PACHECO, R. S.; TEIXEIRA, T. N.; MONTEIRO, E. de C.; RAMALHO, I. O.; MACEDO, R. de O.; BODDEY, R. M.; ZILLI, J. E.; ALVES, B. J. R. |
Afiliação: |
MAYAN BLANC AMARAL, UFRRJ; TAMIRIS DOS SANTOS LOPES, UFRRJ; CAROLINE BUENO FEDER, UFRRJ; THIAGO GONÇALVES RIBEIRO, UFRRJ; RAFAEL SANCHES PACHECO, UFRRJ; TEIXEIRA THIAGO NEVES TEIXEIRA, UFRRJ; EDEVALDO DE CASTRO MONTEIRO, UFRRJ; ISRAEL OLIVEIRA RAMALHO, UFRRJ; ROBERT DE O. MACEDO, UFRRJ; ROBERT MICHAEL BODDEY, CNPAB; JERRI EDSON ZILLI, CNPAB; BRUNO JOSE RODRIGUES ALVES, CNPAB. |
Título: |
Bradyrhizobium occurrence in nodules of perennial horsegram. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Brazilian Journal of Microbiology Online, 17 set. 2022. |
ISSN: |
1678-4405 |
DOI: |
10.1007/s42770-022-00821-2 |
Idioma: |
Inglês |
Conteúdo: |
The introduction of a forage legume into a tropical pasture should decrease the need for N fertilizer, provided biological N-2 fixation (BNF) contributes enough to compensate for exported N. Macrotyloma axillare (perennial horsegram) is a suitable legume for composing mixed pastures, and our hypothesis is that the isolation of indigenous rhizobia from roots and rhizosphere is the way of achieving an efficient inoculant to maximize BNF to the legume. Nodules and rhizosphere soil taken from M. axillare grown in a mixed pasture with palisade grass were sampled and used in a trap host assay using Leonard jars containing a mixture of vermiculite and sand. A total of ten bacteria were initially isolated using this technique. The isolates were then used in two experiments to evaluate the inoculation responses on the perennial horsegram in greenhouse conditions to which nodulation, plant growth, and shoot N accumulation were measured. Phylogenetic analyses based on 16S rRNA and recA placed all strains within genus Bradyrhizobium, some of them not previously described. The best strain provided more than 120 nodules and more than 65 mg of nodules per plant. Strain BR14182 was considered the most promising given the high dry matter and N accumulation in plant shoots. This study provides the first analysis of Bradyrhizobium diversity nodulating M. axillare in Brazil and provided evidence of the role of inoculation in incrementing the plant-rhizobium symbiosis in a forage legume. |
Palavras-Chave: |
Inoculant; Macrotyloma axillare; Mixed pastures; Rhizobia. |
Categoria do assunto: |
S Ciências Biológicas |
Marc: |
LEADER 02392naa a2200325 a 4500 001 2146943 005 2022-10-07 008 2022 bl uuuu u00u1 u #d 022 $a1678-4405 024 7 $a10.1007/s42770-022-00821-2$2DOI 100 1 $aAMARAL, M. B. 245 $aBradyrhizobium occurrence in nodules of perennial horsegram.$h[electronic resource] 260 $c2022 520 $aThe introduction of a forage legume into a tropical pasture should decrease the need for N fertilizer, provided biological N-2 fixation (BNF) contributes enough to compensate for exported N. Macrotyloma axillare (perennial horsegram) is a suitable legume for composing mixed pastures, and our hypothesis is that the isolation of indigenous rhizobia from roots and rhizosphere is the way of achieving an efficient inoculant to maximize BNF to the legume. Nodules and rhizosphere soil taken from M. axillare grown in a mixed pasture with palisade grass were sampled and used in a trap host assay using Leonard jars containing a mixture of vermiculite and sand. A total of ten bacteria were initially isolated using this technique. The isolates were then used in two experiments to evaluate the inoculation responses on the perennial horsegram in greenhouse conditions to which nodulation, plant growth, and shoot N accumulation were measured. Phylogenetic analyses based on 16S rRNA and recA placed all strains within genus Bradyrhizobium, some of them not previously described. The best strain provided more than 120 nodules and more than 65 mg of nodules per plant. Strain BR14182 was considered the most promising given the high dry matter and N accumulation in plant shoots. This study provides the first analysis of Bradyrhizobium diversity nodulating M. axillare in Brazil and provided evidence of the role of inoculation in incrementing the plant-rhizobium symbiosis in a forage legume. 653 $aInoculant 653 $aMacrotyloma axillare 653 $aMixed pastures 653 $aRhizobia 700 1 $aLOPES, T. dos S. 700 1 $aFEDER, C. B. 700 1 $aRIBEIRO, T. G. 700 1 $aPACHECO, R. S. 700 1 $aTEIXEIRA, T. N. 700 1 $aMONTEIRO, E. de C. 700 1 $aRAMALHO, I. O. 700 1 $aMACEDO, R. de O. 700 1 $aBODDEY, R. M. 700 1 $aZILLI, J. E. 700 1 $aALVES, B. J. R. 773 $tBrazilian Journal of Microbiology Online, 17 set. 2022.
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Embrapa Agrobiologia (CNPAB) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
25/08/1997 |
Data da última atualização: |
02/04/2013 |
Autoria: |
GAMA, E. E. G. e; PARENTONI, S. N.; LEMOS, M. A. |
Afiliação: |
EMBRAPA-CNPMS; SIDNEY NETTO PARENTONI, CNPMS. |
Título: |
Avaliação de híbridos simples de milho doce. |
Ano de publicação: |
1992 |
Fonte/Imprenta: |
In: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1988-1991. Sete Lagoas, 1992. p. 165. |
Idioma: |
Português |
Palavras-Chave: |
Sweet corn. |
Thesagro: |
Melhoramento; Milho Doce; Zea Mays. |
Thesaurus NAL: |
breeding. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/80239/1/Avaliacao-hibridos-13.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/80237/1/Avaliacao-hibridos-11.pdf
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Marc: |
LEADER 00648naa a2200193 a 4500 001 1475926 005 2013-04-02 008 1992 bl uuuu u00u1 u #d 100 1 $aGAMA, E. E. G. e 245 $aAvaliação de híbridos simples de milho doce.$h[electronic resource] 260 $c1992 650 $abreeding 650 $aMelhoramento 650 $aMilho Doce 650 $aZea Mays 653 $aSweet corn 700 1 $aPARENTONI, S. N. 700 1 $aLEMOS, M. A. 773 $tIn: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1988-1991. Sete Lagoas, 1992. p. 165.
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