Effect of ethanol treatment on disease resistance against anthracnose rot in postharvest loquat fruit

文献类型： 外文期刊

第一作者： Wang, Kaituo

作者： Wang, Kaituo;Cao, Shifeng;Di, Yaqiong;Zheng, Yonghua;Wang, Kaituo;Liao, Yunxia;Cao, Shifeng

作者机构：

关键词： Loquat fruit;Ethanol treatment;Disease resistance;Anthracnose rot;Quality

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： The effect of ethanol treatment on disease resistance against anthracnose rot in postharvest loquat fruit and its possible mechanism were investigated. Our data implied that treatment of loquat fruit with ethanol at 300 mu l/l significantly inhibited the anthracnose rot caused by Colletotrichum acutatum and maintained the overall quality. Ethanol treatment suppressed activities of catalase and ascorbate peroxidase while increased superoxide dismutase activity in C. acutatum-inoculated loquat fruit, thus resulting in a higher level of H2O2, which might serve as a crucial role to activate disease resistance. Meanwhile, the activities of defense-related enzymes including phenylalanine ammonia-lyase, peroxidase, polyphenol oxidase, chitinase and beta-1,3-glucanase were significantly enhanced by the ethanol treatment. In addition, 300 mu l/l ethanol exhibited an effective antifungal activity against spore germination and mycelial growth of C acutatum in vitro. Therefore, these results suggest that ethanol can inhibit anthracnose rot in postharvest loquat fruit, possibly via inhibiting pathogen growth directly and inducing disease resistance indirectly. (C) 2015 Elsevier B.V. All rights reserved.

分类号： S6

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