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	Provedor de dados Anais da ABC (AABC) (1) BJM (1) Autor Campos,Vicente P. (2) Carvalho,Daniel D.C. (2) Oliveira,Denilson F. (2) Coimbra,João L. (1) Corrêa,Rogério S. B. (1) Guimarães,Renato M. (1) Pasqual,Moacir (1) Mais... Palavra-chave Bacillus (1) Bacillus cereus (1) Bioherbicide (1) Brachiaria decumbens (1) Lactuca sativa (1) Lettuce (1) Phytotoxin (1) Rhizobacteria (1) Stenotrophomonas (1) Weeds (1) Wheat (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2011 (1) 2007 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Selection of phytotoxin producing rhizobacteria Anais da ABC (AABC) Carvalho,Daniel D.C.; Oliveira,Denilson F.; Campos,Vicente P.; Pasqual,Moacir. 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... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacillus; Stenotrophomonas; Weeds; Lettuce; Wheat. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300027 Rhizobacteria able to produce phytotoxic metabolites BJM Carvalho,Daniel D.C.; Oliveira,Denilson F.; Corrêa,Rogério S. B.; Campos,Vicente P.; Guimarães,Renato M.; Coimbra,João L.. To contribute for the development of environmental friendly methods for weed control, a selection of rhizobacteria able to produce phytotoxic substances was carried out. Initially, 35 strains previously isolated from plants in the south of Minas Gerais State (Brazil) were grown in tryptic soy broth. After removal of bacterial cells, the resulting liquids were freeze-dried and extracted with methanol/ethyl acetate (1:1). The extracts were concentrated under vacuum and dissolved in water to be submitted to a lettuce (Lactuca sativa L.) seed assay. Metabolites produced by five strains reduced the number of normal seedlings to values statistically bellow the one observed for the negative control, being the most expressive results obtained with Bacillus cereus... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacillus cereus; Bioherbicide; Lactuca sativa; Phytotoxin; Rhizobacteria; Brachiaria decumbens. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000400032 Registros recuperados: 2 Primeira ... 1 ... Última

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