Botrytis cinerea is one of the most destructive pathogens of cherry tomatoes during preharvest and postharvest phase. Our previous study demonstrated that volatile organic compounds (VOCs) produced by Hanseniaspora uvarum could markedly suppress the mycelium growth and conidia germination of B. cinerea. However, the main inhibitory VOCs of H. uvarum are not fully clear. In this study, a total of 21 volatile organic monomers (VOMs) of H. uvarum were tested for their antifungal activity against B. cinerea in vitro. It was found that trans-cinnamaldehyde, 2-nonanone, ethyl caprylate, benzyl alcohol, hexanoic acid, hexyl alcohol, isobutyl acetate, ethyl propionate, isoamyl acetate, ethyl 2-methylbutyrate, phenethyl alcohol, ethyl acetate, 4-ethylphenol, 3-phenyl-1-propanol, ethyl cinnamate, 3-methyl-1-butanol, and ethyl 3-hydroxybhexanoate could significantly inhibit mycelium growth within 3 days at higher concentrations, whereas ethyl 3-hydroxybutyrate, ethyl caprate, decanoic acid, and lauric acid exhibited a lower inhibition. Furthermore, the five VOMs, including trans-cinnamaldehyde, 2-nonanone, ethyl caprylate, benzyl alcohol, and hexanoic acid, also had the efficiency on inhibiting conidia germination. In particular, trans-cinnamaldehyde was the best inhibitor of mycelium growth and conidia germination. Hence, trans-cinnamaldehyde was also tested in vivo as postharvest biofumigants. In vivo assay showed that trans-cinnamaldehyde could significantly reduce B. cinerea infection of cherry tomatoes and maintain fruit hardness, color, total soluable solids, and titratable acidity under conditions of artificial and natural infection. Collectively, these results indicated that trans-cinnamaldehyde, the main inhibitory VOMs of H. uvarum, has the potential for effectively controlling postharvest gray mold of cherry tomatoes and maintaining fruit quality in commercial application.

灰葡萄孢是在收获前和收获后阶段樱桃番茄最具破坏性的病原体之一。我们以前的研究表明，Hanseniaspora uvarum产生的挥发性有机化合物（VOC）可以显着抑制灰葡萄孢菌的菌丝体生长和分生孢子萌发。但是，尚不完全了解乌氏杆菌的主要抑制性VOC 。在这项研究中，共21个挥发性有机单体（VOM的）的H.葡萄汁酵母它们对的抗真菌活性进行了测试灰葡萄孢在体外。发现反式-肉桂醛，2-壬酮，辛酸乙酯，苄醇，己酸，己醇，乙酸异丁酯，丙酸乙酯，乙酸异戊酯，2-甲基丁酸乙酯，苯乙醇，乙酸乙酯，4-乙基苯酚，3-苯基-1-丙醇肉桂酸乙酯，3-甲基-1-丁醇和3-羟基己酸乙酯在较高浓度下可在3天内显着抑制菌丝生长，而3-羟基丁酸乙酯，癸酸乙酯，癸酸和月桂酸则显示较低的抑制作用。此外，五个VOM，包括反式肉桂醛，2-壬酮，辛酸乙酯，苯甲醇和己酸，也具有抑制分生孢子萌发的效率。特别地，反式肉桂醛是菌丝体生长和分生孢子萌发的最佳抑制剂。因此，反式肉桂醛也已在体内作为收获后的生物熏蒸剂进行了测试。体内测定表明，在人为和自然感染的条件下，反式肉桂醛可以显着减少樱桃番茄的灰葡萄孢的感染，并保持果实的硬度，颜色，总可溶性固形物和可滴定的酸度。总体而言，这些结果表明，反式肉桂醛（H. uvarum的主要抑制性VOMs）具有有效控制樱桃番茄采后灰霉病和保持水果品质的潜力。