Induced resistance to control postharvest stem-end rot by methyl jasmonate in mango fruit
文献类型： 外文期刊
作者： Li, Min 1 ; Qu, Xiangxiang 1 ; Gong, Deqiang 1 ; Huang, Tianyu 3 ; Wang, Yu 3 ; Yang, Yi 1 ; Gao, Zhaoyin 4 ; Zhang, Zhengke 5 ; Sun, Jinhua 1 ; Hu, Meijiao 1 ;
作者机构： 1.Minist Agr & Rural Affairs, Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Key Lab Integrated Pest Management Trop Crops, Haikou 571101, Peoples R China
2.Hainan Univ, Sch Life & Pharmaceut Sci, Haikou 570228, Peoples R China
3.Ocean Univ China, Coll Food Sci & Engn, Qingdao 266003, Peoples R China
4.Chinese Acad Trop Agr Sci, Minist Agr & Rural Affairs, Trop Crops Genet Resources Inst, Key Lab Integrated Pest Management Trop Crops, Haikou 571101, Peoples R China
5.Hainan Univ, Coll Food Sci & Engn, Haikou 570228, Hainan, Peoples R China
关键词： Mango fruit; Methyl jasmonate; Lasiodiplodia theobromae; Host response
期刊名称：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY （ 影响因子：3.3； 五年影响因子：3.2 ）
ISSN： 0885-5765
年卷期： 2024 年 134 卷
页码：
收录情况： SCI
摘要： Induced resistance is an alternative disease control strategy for postharvest fruits and vegetables. Methyl jasmonate (MeJA) is a crucial phytohormone in the defense response to biotic and abiotic stresses. The effect and relevant mechanism of MeJA on the control of postharvest disease in mango fruit remain unclear. This study investigated the effect and possible mechanism of MeJA against stem-end rot caused by Lasiodiplodia theobromae in mango fruit. The results showed that MeJA significantly inhibited the lesion expansion on mango fruit inoculated with L. theobromae. 10 mu M MeJA treatment effectively induced disease resistance against L. theobromae during postharvest storage. MeJA enhanced the activities of defense-related enzymes, including phenylalanine ammonia lyase (PAL), peroxidase (POD), beta-1,3-glucanase (GLU), and chitinase (CHT), increased the accumulation of endogenous jasmonic acid (JA) and salicylic acid (SA) contents, up-regulated the expressions of the related genes on JA pathway (AOS, JAR1, MYC2, and COI1) and SA pathway (ICS, and PR1), stimulated the contents of total phenolics and flavonoids, and inhibited the accumulation of malondialdehyde (MDA). Furthermore, MeJA delayed the ripening and senescence of the fruit by inhibiting the peel yellowing, flesh softening and change in soluble solids content (SSC) of mango fruit. The results indicated that the enhanced resistance of MeJA-treated mango to stem-end rot was potentially due to the activation of defense responses induced by synergistic interaction between JA and SA pathways, as well as delayed postharvest ripening. The MeJA treatment is a promising strategy to control stem-end rot of mango fruit.
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