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Metabolomic and transcriptomic analysis reveal high solar irradiance inhibited the melanin formation in persimmon fruit peel

文献类型： 外文期刊

作者： Qi, Yingwei 1 ; Jiang, Yonghua 3 ; Wang, Chenyu 1 ; Song, Meijie 1 ; Liu, Yanfei 1 ; Liu, Jia 4 ; Jiang, Zitao 1 ; Yang, Yong 1 ; Ren, Xiaolin 1 ; Ding, Yuduan 1 ;

作者机构： 1.Northwest A&F Univ, Coll Hort, Yangling 712100, Shaanxi, Peoples R China

2.Guangdong Acad Agr Sci, Minist Agr & Rural Affairs, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc,Key Lab Funct Food, Guangzhou 510610, Peoples R China

3.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangdong Key Lab Trop & Subtrop Fruit Tree Res,Mi, Guangzhou 510640, Peoples R China

4.China Acad Chinese Med Sci, Inst Chinese Mat Med, Beijing 100700, Peoples R China

关键词： Persimmon; High solar irradiance; RNA-Seq; Metabolites; Melanin; PPO activity

期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：5.7； 五年影响因子：6.0 ）

ISSN： 0098-8472

年卷期： 2023 年 207 卷

页码：

收录情况： SCI

摘要： During fruit development of Diospyros kaki cv. 'Heishi', the peel color changed to orange-red when undergone high solar irradiance, which was different from turning black in normal condition. Limited information on this phenomenon of persimmon fruit has been reported. In the present study, we explored 'Heishi' persimmon fruit under two conditions of extreme solar irradiance during development. Their peel characteristics were evaluated, including organelle ultra-structure, polyphenol oxidase (PPO) activity, transcriptome profile, and metabolomics. The results showed that high solar irradiance severely degraded or ruptured chloroplast, and most of the analyzed metabolites were higher accumulated in high solar irradiance stressed peel than in the normal tissues. Significantly accumulated phenolics and carotenoids may contribute to photoprotection by scavenging high solar irradiance stress triggered ROS products. RNA-Seq analysis showed that many differentially expressed genes (DEGs) related to the accumulation of the analyzed metabolites were up-regulated under stress. The stress also significantly inhibited PPO activity at stages of melanin formation. The reduced melanin and significantly accumulated carotenoids (especially lycopene and beta-carotene) finally resulted in orange-red fruit peel.

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