Integrated transcriptomic and miRNA-seq analysis of Pak-choi provides insight into the molecular mechanisms involved in the preservation of postharvest quality by white LED light irradiation

文献类型： 外文期刊

第一作者： Yan, Zhicheng

作者： Yan, Zhicheng;Yan, Bangjin;Xu, Dongying;Yuan, Shuzhi;Xu, Xiaodi;Shi, Junyan;Zuo, Jinhua;Yue, Xiaozhen;Wang, Qing;Yan, Zhicheng;Wu, Caie;Shi, Junyan

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关键词： Ascorbic acid; Cell wall metabolism; Glucosinolates; Photosynthesis; Transcription factor

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.8； 五年影响因子：7.5 ）

ISSN： 0925-5214

年卷期： 2025 年 219 卷

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收录情况： SCI

摘要： Low-intensity white light-emitting diode (LED) irradiation effectively delays postharvest senescence in pak-choi at 20 degree celsius and 90 % relative humidity. In this study, RNA-seq and miRNA-seq analyses were conducted on samples collected at 0 d (initial sample) and 5 d (CK and LED-treated samples) to evaluate the regulatory effects of white LED irradiation on miRNA. The resulting data revealed a total of 23 differentially expressed miRNAs (DEmi-RNAs) in the CK/LED group on 5 d of storage. LED irradiation induced the expression of AP2 family genes and the biosynthesis of aliphatic glucosinolates by modulating the level of bra-miR172 family miRNAs. LED irradiation also stimulated the expression of genes associated with the photosynthetic pathway in pak-choi and regulated biosynthesis of ascorbic acid and resistance-associated transcription factors by modulating the level of novel miRNAs. Furthermore, LED irradiation suppressed cellulase and polygalacturonase activity, and maintained the pectin content. These findings demonstrate the ability of white LED light irradiation to significantly delay the postharvest senescence process in pak-choi by modulating miRNA expression.

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