Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/15501
Title: Selection of phytotoxin producing rhizobacteria
Keywords: Rhizobacteria
Weed control
Stenotrophomonas
Rizobactérias
Plantas daninhas - Controle
Issue Date: Sep-2011
Publisher: Academia Brasileira de Ciências
Citation: CARVALHO, D. D. C. et al. Selection of phytotoxin producing rhizobacteria. Anais da Academia Brasileira de Ciências, Rio de Janeiro, v. 83, n. 3, p. 1091-1096, Sept. 2011.
Abstract: In order to select phytotoxin producing rhizobacteria to control weed plants, twenty five bacterial strains previously isolated from the rhizospheres of various plants were grown in a liquid medium and, after cell removal by centrifugation, the liquid phases were freeze-dried and the products were extracted with ethyl acetate/methanol. The extracts were concentrated to dryness under vacuum and dissolved in water and sucrose solution to be submitted to in vitro assays of lettuce (Lactuca sativa L.) seed germination and wheat (Triticum aestivum L.) coleoptile growth. Although most samples affected coleoptile growth, only those from four strains reduced lettuce seed germination. Two strains of Bacillus cereus, one strain of B. pumilus and one of Stenotrophoonas altophilia were the most promising microorganisms for producing phytotoxin and, consequently, for the development of new weed control products.
URI: http://repositorio.ufla.br/jspui/handle/1/15501
Appears in Collections:DQI - Artigos publicados em periódicos

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