Melatonin delays yellowing of broccoli during storage by regulating chlorophyll catabolism and maintaining chloroplast ultrastructure

文献类型： 外文期刊

第一作者： Wu, Chenghao

作者： Wu, Chenghao;Xie, Keqin;Chi, Zongyu;Wang, Jing;Wang, Hongfei;Wei, Yingying;Shao, Xingfeng;Xu, Feng;Cao, Shifeng;Zhang, Chundan;Gao, Haiyan

作者机构：

关键词： Broccoli; Melatonin; Yellowing; Chloroplast ultrastructure; Chlorophyll catabolic genes

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：5.537； 五年影响因子：5.821 ）

ISSN： 0925-5214

年卷期： 2021 年 172 卷

页码：

收录情况： SCI

摘要： The effect of melatonin treatment on color, chlorophyll degradation and chloroplast structure in broccoli during storage was evaluated. One hundred mu mmol L-1 melatonin markedly extended the shelf life of broccoli. Compared with control florets, melatonin treatment delayed the decline of chlorophyll content, and maintained more intact chloroplasts. Meanwhile, melatonin also suppressed the activities of chlorophyll catabolic enzymes such as chlorophyllase (CLH), pheophytinase (PPH), pheophorbide a oxygenase (PAO) and red chlorophyll catabolite reductase (RCCR), and down-regulated the expressions of BoNYC1, BoNOL, BoCLH, BoPPH, BoPAO, BoRCCR and BoSGR1 involved in chlorophyll catabolism. Taken together, our results indicated that melatonin could be a good candidate for delaying yellowing in broccoli during storage at 20 degrees C.

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