Biochemical and cytochemical aspects of the interactions of chitosan and Botrytis cinerea in bell pepper fruit

作者: Ahmed El Ghaouth , Joseph Arul , Charles Wilson , Nicole Benhamou

DOI: 10.1016/S0925-5214(97)00056-2

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摘要: Abstract The effect of chitosan on the necrotrophic growth Botrytis cinerea in bell pepper fruit was investigated. In control tissue, massive fungal colonization followed by extensive degradation pectin component host walls and middle lamella. Reduction labelling also observed distant from invading hyphae. contrast, cellulose breakdown limited to small wall areas closely appressed against pathogen. disruption reduction appeared parallel levels cell-wall-macerating enzymes isolated B. -infected tissue. High polygalacturonase trace amounts cellulase were detected chitosan-treated preservation binding sites intense regular distribution over walls, suggested that might have prevented maceration tissue . Chitosan not only effective reducing production polygalacturonases , but caused severe cytological damage This may, part, explain ability pathogen colonize tissues presence chitosan.

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