Postharvest application of methyl jasmonate alleviates lignin accumulation in stone cells of pear fruit during low-temperature storage
文献类型： 外文期刊
作者： Hong, Panting 1 ; Zhang, Jingyi 1 ; Shi, Dongfang 1 ; Yang, Can 1 ; Zeng, Ming 1 ; Li, Xue 3 ; Zhou, Kun 1 ; Xi, Wanpeng 1 ;
作者机构： 1.Southwest Univ, Coll Hort & Landscape Architecture, Chongqing 400716, Peoples R China
2.Southwest Univ, Key Lab Agr Biosafety & Green Prod Upper Yangtze R, Minist Educ, Chongqing 400715, Peoples R China
3.Chongqing Acad Agr Sci, Chongqing 401329, Peoples R China
关键词： Pear fruit; Transcriptome; MeJA; Lignification; ROS; PCD
期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.4； 五年影响因子：6.9 ）
ISSN： 0925-5214
年卷期： 2024 年 209 卷
页码：
收录情况： SCI
摘要： Pear fruits are usually harvested in the mid-summer and need to be stored at low temperatures to prevent deterioration and extend their shelf-life. However, low temperature induces lignin deposition and increases stone cell numbers, impairing fruit quality and decreasing consumer satisfaction. In this study, we found that postharvest application of MeJA could efficiently inhibit lignification in pear fruit 'Xinli No.7 ' and 'Zaosu' under lowtemperature storage (4 degrees C). Transcriptomic and metabolomic analyses indicated that MeJA application may inhibit lignin polymerization and aggregation by repressing the expression of genes encoding enzymes in the late stage of the lignin biosynthesis pathway. Also, MeJA may alleviate ROS-mediated lignification by promoting flavonoids accumulation. Moreover, the inhibition of the lignification process by MeJA likely depends on the activation of endogenous JA biosynthesis and its signaling pathway. Our findings shed light on the lignification process and the role of MeJA in its regulation in pear fruit under low-temperature storage, and provide a means of alleviating deleterious lignification during storage.
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