Data/hora: 09/06/2024 03:07:05

Provedor de dados: 	87	
País: 	Brazil	
Título: 	Bioassays Guided Fractionation of Senna occidentalis for Identification of Natural Antifungal Constituents Against Macrophomina phaseolina	
Autores: 	JAVAID,A.; QUDSIA,H.; SHOAIB,A.	
Data: 	2017-01-01	
Ano: 	2017	
Palavras-chave: 	Antifungal activity; Leaf extract; Macrophomina phaseolina; Natural fungicide; Senna occidentalis.	
Resumo: 	ABSTRACT Macrophomina phaseolina is one of the most destructive soil-borne fungal plant pathogens. In the present study, different aerial parts of Senna occidentalis were analyzed for their antifungal activity against M. phaseolina. In initial screening bioassays, 0.5-3.0% concentrations of methanolic extracts of fruit, leaf and stem were tested against M. phaseolina. The methanolic leaf extract showed the greatest activity causing up to 29% suppression in biomass production of M. phaseolina. Fractionation of leaf extract of S. occidentalis was carried out with four organic solvents. Bioassays with a range of concentrations (2.34-150 mg mL-1) of these sub-fractions revealed that the chloroform sub-fraction was the most effective, causing 93-98% reduction in the biomass of M. phaseolina, followed by 59-92% suppression in fungal biomass due to the n-hexane sub-fraction. The ethyl acetate and n-butanol sub-fractions were only effective at higher concentrations. GC-MS analysis of chloroform sub-fraction was performed to identify different compounds. Six compounds were identified in this fraction; 1,3-benzenedicarboxylic acid, bis(2-ethylhexyl) ester was the predominant compound (53.55%) followed by 9,10-dimethyltricyclo[4.2.1.1 (2,5)]decane-9,10-diol (22.68%), cyclohexanol, and 2-(2-hydroxy-2-propyl)-5-methyl (9.87%).	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100210	
Editor: 	Sociedade Brasileira da Ciência das Plantas Daninhas	
Relação: 	10.1590/s0100-83582017350100002	
Formato: 	text/html	
Fonte: 	Planta Daninha  v.35 2017	
Fonte: 	info:eu-repo/semantics/openAccess