Volatile Organic Compounds of Wickerhamomyces anomalus Prevent Postharvest Black Spot Disease in Tomato

Postharvest diseases, such as black spots caused byAlternaria alternata, have caused huge economic losses to the tomato industry and seriously restricted its development. In recent years, biological control has become a new method to control postharvest diseases of fruits and vegetables. Our research group screenedW. anomalus, a yeast demonstrating a promising control effect on a postharvest black spot disease of tomatoes, and explored its physiological mechanism of prevention and control. Therefore, this study investigated the prevention and control effect of metabolites ofW. anomaluson tomato black spot disease and the inhibition effect of main components onA. alternata. A GC-MS analysis found that isoamyl acetate was the main component ofW. anomalusthat played an inhibitory role. The results showed that isoamyl acetate could inhibit the growth ofA. alternataand had a certain control effect on postharvest black spots in tomatoes. Our findings suggest that isoamyl acetate could be a promising alternative to fungicides for controlling postharvest black spots in tomatoes.