beta-Aminobutyric acid induces resistance of mango fruit to postharvest anthracnose caused by Colletotrichum gloeosporioides and enhances activity of fruit defense mechanisms

文献类型： 外文期刊

第一作者： Zhang, Zhengke

作者： Zhang, Zhengke;Gao, Zhaoyin;Li, Min;Hu, Meijiao;Yang, Dongping;Yang, Bo;Zhang, Zhengke;Jiang, Yueming

作者机构：

关键词： Mango;Anthracnose;beta-Aminobutyric acid;BABA;Colletotrichum gloeosporioides;Induced resistance

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

ISSN： 0304-4238

年卷期： 2013 年 160 卷

页码：

收录情况： SCI

摘要： The effect of beta-aminobutyric acid (BABA) on control of anthracnose caused by Colletotrichum gloeosporioides in mango fruit and its possible mechanisms were investigated. The results show that BABA treatments effectively suppressed the expansion of lesion in mango fruit inoculated with C. gloeosporioides during storage at 25 degrees C, with the greatest efficacy being obtained using 100 mM BABA. However, BABA at 25-400 mM did not exhibit direct antifungal activity against C. gloeosporioides in vitro. Furthermore, BABA treatment at 100 mM enhanced the activities of beta-1,3-glucanase (GLU), chitinase (CHT) and phenylalanine ammonia lyase (PAL). BABA treatment also contributed to the accumulation of hydrogen peroxide (H2O2), while decreasing the rate of superoxide radical (O-2(center dot-)) production. Concurrently, BABA increased the activity of superoxide dismutase (SOD), while inhibiting catalase (CAT) and ascorbate peroxidase (APX) activities. These results indicate that increased disease resistance of mango fruit after BABA treatment during storage might be attributed to an elicitation of defense response involving in the enhancement of defense-related enzyme activities and modulation of antioxidant system activities. (C) 2013 Elsevier B.V. All rights reserved.

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