Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/942700
Research center of Embrapa/Collection: Embrapa Meio Ambiente - Artigo em periódico indexado (ALICE)
Issue Date: 2012
Type of Material: Artigo em periódico indexado (ALICE)
Authors: COSTA, F. E. C.
MELO, I. S. de
Additional Information: FRANCISCO EDUARDO DE CARVALHO COSTA; ITAMAR SOARES DE MELO, CNPMA.
Title: Endophytic and rhizospheric bacteria from Opuntia ficus-indica mill and their ability to promote plant growth in cowpea, Vigna unguiculata (L.) Walp.
Publisher: African Journal of Microbiology Research, v. 6, n. 6, p. 1345-1353, 2012.
Language: en
Keywords: Phosphate solubilization
Feijão caupi
Ndole acetic acid.
Description: 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).
Thesagro: Cacto
Bactéria
Rizosfera
Regulador de crescimento
Estimulante de crescimento vegetal
Feijão de corda
Vigna Unguiculata.
NAL Thesaurus: Endophytes
Cacti and succulents
Growth promotion
Opuntia ficus-indica
rhizosphere.
Year: 2012-12-14
Appears in Collections:Artigo em periódico indexado (CNPMA)

Files in This Item:
File Description SizeFormat 
2012AP49.pdf105,68 kBAdobe PDFThumbnail
View/Open

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace