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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Pecuária Sudeste. |
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Data corrente: |
09/06/2021 |
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Data da última atualização: |
15/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AMARAL, M. B.; RIBEIRO, T. G.; ALVES, G. C.; COELHO, M. R. R.; MATTA, F. de P.; BALDANI, J. I.; BALDANI, V. L. D. |
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Afiliação: |
MAYAN BLANC AMARAL, UFRRJ; THIAGO GONÇALVES RIBEIRO, UFRRJ; ICO DE PGABRIELA CAVALCANTI ALVES, UFRRJ; MARCIA REED RODRIGUES COELHO, CNPAB; FREDERICO DE PINA MATTA, CPPSE; JOSE IVO BALDANI, CNPAB; VERA LUCIA DIVAN BALDANI, PESQUISADORA APOSENTADA DA EMBRAPA AGROBIOLOGIA. |
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Título: |
The occurrence of rhizobacteria from Paspalum genotypes and their effects on plant growth. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Scientia Agricola, v. 79, n. 2, e20200240, 2022. |
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ISSN: |
1678-992X |
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DOI: |
10.1590/1678-992X-2020-024 |
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Idioma: |
Inglês |
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Conteúdo: |
This work aimed to isolate and characterize plant growth promoting rhizobacteria (PGPR) from 10 Paspalum genotypes and evaluate the effect of their inoculation on P. regnellii, P. atratum, and P. malacophyllum genotypes. The bacterial population ranged from undetectable to 107 bacterial cells per gram of fresh matter in the Paspalum genotypes. Initially, we isolated 164 bacteria from rhizospheric soil and roots of the Paspalum genotypes using media N-free LG agar plate, semi-solid NFb, and LGI. The isolates were characterized genetically and physiologically. The sequencing of 16S rRNA showed the presence of many genera, and some are new in association with Paspalum. The most common was Bacillus followed by Rhizobium, Paraburkholderia, Enterobacter, Cupriavidus, Pseudomonas, Dyadobacter and Acinetobacter. Thirty-eight per cent of isolates produced siderophores, 25 % produced solubilized phosphate, and only 9 % produced indolic compounds. Three greenhouse experiments were performed in randomized blocks with six replicates using representative bacterial strains isolated from P. regnellii, P. malacophyllum and P. atratum cv. Pojuca. We also included strain Sp245 (Azospirillum baldaniorum), uninoculated control, and nitrogen control (150 kg N ha?1). There was an increase of up to 53 % in shoot dry matter in P. regnellii inoculated with strain Sp245 and the shoots accumulated more N. In contrast, only small effects were observed for the other Paspalum genotypes inoculated with PGPR from the host genotypes. This study shows a high diversity of diazotrophic rhizosphere bacteria and suggests no strain specificity between the bacterial isolates and the Paspalum genotypes. MenosThis work aimed to isolate and characterize plant growth promoting rhizobacteria (PGPR) from 10 Paspalum genotypes and evaluate the effect of their inoculation on P. regnellii, P. atratum, and P. malacophyllum genotypes. The bacterial population ranged from undetectable to 107 bacterial cells per gram of fresh matter in the Paspalum genotypes. Initially, we isolated 164 bacteria from rhizospheric soil and roots of the Paspalum genotypes using media N-free LG agar plate, semi-solid NFb, and LGI. The isolates were characterized genetically and physiologically. The sequencing of 16S rRNA showed the presence of many genera, and some are new in association with Paspalum. The most common was Bacillus followed by Rhizobium, Paraburkholderia, Enterobacter, Cupriavidus, Pseudomonas, Dyadobacter and Acinetobacter. Thirty-eight per cent of isolates produced siderophores, 25 % produced solubilized phosphate, and only 9 % produced indolic compounds. Three greenhouse experiments were performed in randomized blocks with six replicates using representative bacterial strains isolated from P. regnellii, P. malacophyllum and P. atratum cv. Pojuca. We also included strain Sp245 (Azospirillum baldaniorum), uninoculated control, and nitrogen control (150 kg N ha?1). There was an increase of up to 53 % in shoot dry matter in P. regnellii inoculated with strain Sp245 and the shoots accumulated more N. In contrast, only small effects were observed for the other Paspalum genotypes inoculated with PGP... Mostrar Tudo |
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Palavras-Chave: |
PGPR. |
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Thesaurus Nal: |
Biofertilizers; Tropical grasslands. |
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Categoria do assunto: |
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F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02427naa a2200253 a 4500
001 2132255
005 2022-06-15
008 2022 bl uuuu u00u1 u #d
022 $a1678-992X
024 7 $a10.1590/1678-992X-2020-024$2DOI
100 1 $aAMARAL, M. B.
245 $aThe occurrence of rhizobacteria from Paspalum genotypes and their effects on plant growth.$h[electronic resource]
260 $c2022
520 $aThis work aimed to isolate and characterize plant growth promoting rhizobacteria (PGPR) from 10 Paspalum genotypes and evaluate the effect of their inoculation on P. regnellii, P. atratum, and P. malacophyllum genotypes. The bacterial population ranged from undetectable to 107 bacterial cells per gram of fresh matter in the Paspalum genotypes. Initially, we isolated 164 bacteria from rhizospheric soil and roots of the Paspalum genotypes using media N-free LG agar plate, semi-solid NFb, and LGI. The isolates were characterized genetically and physiologically. The sequencing of 16S rRNA showed the presence of many genera, and some are new in association with Paspalum. The most common was Bacillus followed by Rhizobium, Paraburkholderia, Enterobacter, Cupriavidus, Pseudomonas, Dyadobacter and Acinetobacter. Thirty-eight per cent of isolates produced siderophores, 25 % produced solubilized phosphate, and only 9 % produced indolic compounds. Three greenhouse experiments were performed in randomized blocks with six replicates using representative bacterial strains isolated from P. regnellii, P. malacophyllum and P. atratum cv. Pojuca. We also included strain Sp245 (Azospirillum baldaniorum), uninoculated control, and nitrogen control (150 kg N ha?1). There was an increase of up to 53 % in shoot dry matter in P. regnellii inoculated with strain Sp245 and the shoots accumulated more N. In contrast, only small effects were observed for the other Paspalum genotypes inoculated with PGPR from the host genotypes. This study shows a high diversity of diazotrophic rhizosphere bacteria and suggests no strain specificity between the bacterial isolates and the Paspalum genotypes.
650 $aBiofertilizers
650 $aTropical grasslands
653 $aPGPR
700 1 $aRIBEIRO, T. G.
700 1 $aALVES, G. C.
700 1 $aCOELHO, M. R. R.
700 1 $aMATTA, F. de P.
700 1 $aBALDANI, J. I.
700 1 $aBALDANI, V. L. D.
773 $tScientia Agricola$gv. 79, n. 2, e20200240, 2022.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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