PsERF1B-PsMYB10.1-PsbHLH3 module enhances anthocyanin biosynthesis in the flesh-reddening of amber-fleshed plum (cv. Friar) fruit in response to cold storage  

作　　者：Ranran Xu Yubei Wang Limin Wang Zhilei Zhao Jiankang Cao Daqi Fu Weibo Jiang 

机构地区：[1]College of Food Science and Nutritional Engineering,China Agricultural University,Beijing 100083,China [2]School of Chemical Engineering&Food Science,Zhengzhou University of Technology,Zhengzhou 450044,China [3]College of Quality and Technical Supervision,Hebei University,Baoding 071002,China

出　　处：《Horticulture Research》2023年第6期276-286,共11页园艺研究（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(No.31872907 and No.32272371);S&T Program of Hebei(No.C2021201011);the 2115 Talent Development Program of China Agricultural University.

摘　　要：Flesh-reddening usually occurs in the amber-fleshed plum(Prunus salicina Lindl.)fruit during cold storage but not during ambient storage direct after harvest.It is not clear how postharvest cold signal is mediated to regulate the anthocyanin biosynthesis in the forming of flesh-reddening yet.In this study,anthocyanins dramatically accumulated and ethylene produced in the‘Friar’plums during cold storage,in comparison with plums directly stored at ambient temperature.Expression of genes associated with anthocyanin biosynthesis,as well as transcription factors of PsMYB10.1,PsbHLH3,and PsERF1B were strongly stimulated to upregulated in the plums in the period of cold storage.Suppression of ethylene act with 1-methylcyclopropene greatly suppressed flesh-reddening and downregulated the expression of these genes.Transient overexpression and virus-induced gene silencing assays in plum flesh indicated that PsMYB10.1 encodes a positive regulator of anthocyanin accumulation.The transient overexpression of PsERF1B,coupled with PsMYB10.1 and PsbHLH3,could further prompt the anthocyanin biosynthesis in a tobacco leaf system.Results from yeast two-hybrid and luciferase complementation assays verified that PsERF1B directly interacted with PsMYB10.1.PsERF1B and PsMYB10.1 enhanced the activity of the promoter of PsUFGT individually,and the enhancement was prompted by the co-action of PsERF1B and PsMYB10.1.Overall,the stimulation of the PsERF1B-PsMYB10.1-PsbHLH3 module mediated cold signal in the transcriptomic supervision of the anthocyanin biosynthesis in the‘Friar’plums.The results thereby revealed the underlying mechanism of the postharvest alteration of the flesh phenotype of‘Friar’plums subjected to low temperature.

关 键 词：temperature. PROMPT AMBIENT 

分 类 号：Q94[生物学—植物学]