Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/60362
Type: Artigo de periódico
Title: Interaction of endophytic diazotrophic bacteria and Fusarium oxysporum f. sp cubense on plantlets of banana 'Maca'
Author: Weber, OB
Muniz, CR
Vitor, AO
Freire, FCO
Oliveira, VM
Abstract: The objective of this work was to evaluate the effect of endophytic diazotrophic bacteria Herbaspirillum and Burkholderia on the Fusarium oxysporum f. sp. cubense (Foc) establishment and on the plantlets growth of the Maca banana (Musa spp., group ABB). Two assays were carried out in a greenhouse at the National Center of Tropical Agroindustry in Fortaleza city, Ceara State (Brazil), using randomized block designs in the factorial arrangements 4 x 2 and 8 x 2. On the first trial plantlets were inoculated with the Burkholderia sp. AB202; Herbaspirillum sp., BA227, both of strains and controls bacteria, with and without Foc and cultivated in pots filled with an autoclaved mixture of washed sand and vermiculite (ratio 3:2 v v(-1)), during 4 months. On a second assay, plants were subjected to following conditions: absence and presence of strains AB202, AB213 (Burkholderia spp.), BA227, BA234 (Herbaspirillum-like), AB202 plus BA227, AB213 plus BA234, the mixture of the four bacterial strain, absence and presence of the Foc; and cultivated in pots filled with autoclaved Haplic Arenosol, during 2 months. The plant association with diazotrophs and the Foc was confirmed, and factors interacted significantly on the most probable number of bacteria and the colony forming units of the pathogen on roots and plant rhizomes. The potential of the endophytes on the inhibition of Foc propagate units and on the plant growth promotion was demonstrated. The higher biomass was observed four and 2 months after plant inoculation with AB202 and BA234. Results showed that these endophytes may be used as potential biofertilizer and biocontrol agents.
Subject: burkholderia
herbaspirillum
Fusarium oxysporum
Musa spp
biocontrol
Country: Holanda
Editor: Springer
Rights: fechado
Identifier DOI: 10.1007/s11104-007-9335-0
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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