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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
14/12/2012 |
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Data da última atualização: |
14/12/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
COSTA, F. E. C.; MELO, I. S. de. |
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Afiliação: |
FRANCISCO EDUARDO DE CARVALHO COSTA; ITAMAR SOARES DE MELO, CNPMA. |
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Título: |
Endophytic and rhizospheric bacteria from Opuntia ficus-indica mill and their ability to promote plant growth in cowpea, Vigna unguiculata (L.) Walp. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
African Journal of Microbiology Research, v. 6, n. 6, p. 1345-1353, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: Studies on the biodiversity of plants associated microorganisms play an important role in food production. Ficus-tree, Opuntia ficus-indica Mill, are cultivated in many nations worldwide intercropping with other cultures, like cowpea, Vigna unguiculata (L.) Walp. The objectives of this study were to isolate and determine the diversity of bacterial endophytes and rhizobacteria in cacti and their ability to solubilize phosphate, the nif presence, their ability to produce indole-acetic acid (IAA) and verify their efficacy to promote plant growth in cowpea plants. Bacteria were isolated from rhizospheric soils, from surface- sterilized stems and roots of plants collected in Brazil, in nitrogen- free medium, and identified through fatty acid analysis. Gram-negative bacteria comprised 63% of endophytic bacteria and 80% of rhizobacteria. Only 13% showed amplification of nifH gene. From the 68 bacterial strains, associated with cacti, 18% produced IAA, and the best results were observed in Agrobacterium radiobacter, Klebsiella trevisanii, Enterobacter agglomerans and Paracoccus denitrificans. Phosphate solubilization was observed in 6% of strains. None of the strains inoculated in cowpea plants promoted stem and foliar growth. Four percent of strains showed ability to increase the root dry matter compared to the control group (inoculated with a pool of indigenous semi-arid Rhizobium). |
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Palavras-Chave: |
Feijão caupi; Ndole acetic acid; Phosphate solubilization. |
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Thesagro: |
Bactéria; Cacto; Estimulante de crescimento vegetal; Feijão de corda; Regulador de crescimento; Rizosfera; Vigna Unguiculata. |
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Thesaurus Nal: |
Cacti and succulents; Endophytes; Growth promotion; Opuntia ficus-indica; rhizosphere. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/72388/1/2012AP49.pdf
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Marc: |
LEADER 02411naa a2200313 a 4500
001 1942700
005 2012-12-14
008 2012 bl uuuu u00u1 u #d
100 1 $aCOSTA, F. E. C.
245 $aEndophytic and rhizospheric bacteria from Opuntia ficus-indica mill and their ability to promote plant growth in cowpea, Vigna unguiculata (L.) Walp.$h[electronic resource]
260 $c2012
520 $aABSTRACT: Studies on the biodiversity of plants associated microorganisms play an important role in food production. Ficus-tree, Opuntia ficus-indica Mill, are cultivated in many nations worldwide intercropping with other cultures, like cowpea, Vigna unguiculata (L.) Walp. The objectives of this study were to isolate and determine the diversity of bacterial endophytes and rhizobacteria in cacti and their ability to solubilize phosphate, the nif presence, their ability to produce indole-acetic acid (IAA) and verify their efficacy to promote plant growth in cowpea plants. Bacteria were isolated from rhizospheric soils, from surface- sterilized stems and roots of plants collected in Brazil, in nitrogen- free medium, and identified through fatty acid analysis. Gram-negative bacteria comprised 63% of endophytic bacteria and 80% of rhizobacteria. Only 13% showed amplification of nifH gene. From the 68 bacterial strains, associated with cacti, 18% produced IAA, and the best results were observed in Agrobacterium radiobacter, Klebsiella trevisanii, Enterobacter agglomerans and Paracoccus denitrificans. Phosphate solubilization was observed in 6% of strains. None of the strains inoculated in cowpea plants promoted stem and foliar growth. Four percent of strains showed ability to increase the root dry matter compared to the control group (inoculated with a pool of indigenous semi-arid Rhizobium).
650 $aCacti and succulents
650 $aEndophytes
650 $aGrowth promotion
650 $aOpuntia ficus-indica
650 $arhizosphere
650 $aBactéria
650 $aCacto
650 $aEstimulante de crescimento vegetal
650 $aFeijão de corda
650 $aRegulador de crescimento
650 $aRizosfera
650 $aVigna Unguiculata
653 $aFeijão caupi
653 $aNdole acetic acid
653 $aPhosphate solubilization
700 1 $aMELO, I. S. de
773 $tAfrican Journal of Microbiology Research$gv. 6, n. 6, p. 1345-1353, 2012.
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Embrapa Meio Ambiente (CNPMA) |
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