1887

Abstract

aspartic proteases (APs) with antimicrobial activity are induced after abiotic and biotic stress. In this study the ability of APs to produce a direct antimicrobial effect was investigated. Viability assays demonstrated that APs are able to kill spores of and in a dose-dependent manner. Localization experiments with FITC-labelled APs proved that the proteins interact directly with the surface of spores and hyphae of and . Moreover, incubation of spores and hyphae with APs resulted in membrane permeabilization, as shown by the uptake of the fluorescent dye SYTOX Green. It is concluded that the antimicrobial effect of APs against and is caused by a direct interaction with the microbial surfaces followed by membrane permeabilization.

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2006-07-01
2019-10-23
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