PbRVE6 Promotes Anthocyanins Accumulation in Pear Fruit Peel by Regulating Key Biosynthetic Genes
文献类型： 外文期刊
作者： Li, Xieyu 1 ; Du, Wei 1 ; Cheng, Yinsheng 1 ; Yang, Li 1 ; Dong, Xiujuan 1 ; Hussain, Syed Bilal 3 ; Xu, Lingfei 4 ; Liu, Zheng 1 ; Wu, Tao 1 ;
作者机构： 1.Hubei Acad Agr Sci, Fruit & Tea Res Inst, Wuhan, Hubei, Peoples R China
2.Hubei Key Lab Germplasm Innovat & Utilizat Fruit T, Wuhan, Hubei, Peoples R China
3.Univ Coll Dublin, Sch Agr & Food Sci, Dublin, Ireland
4.Northwest A&F Univ, Coll Hort, Yangling, Shaanxi, Peoples R China
期刊名称：PHYSIOLOGIA PLANTARUM （ 影响因子：3.6； 五年影响因子：5.4 ）
ISSN： 0031-9317
年卷期： 2024 年 176 卷 6 期
页码：
收录情况： SCI
摘要： Red peel color, a desirable trait in pears, is determined by anthocyanin accumulation. While REVEILLE (RVEs) transcription factors regulate anthocyanin biosynthesis in some plant species, their role in pear peel has not been well-studied. This study investigates the function of RVEs in anthocyanin biosynthesis in 'Zaosu' (low anthocyanin content) and its red bud mutant, 'Red Zaosu' (high anthocyanin content) fruit peel. Consistent with higher anthocyanin content, 'Red Zaosu' pears exhibited increased PbRVE6 expression compared to 'Zaosu', while PbRVE3a and PbRVE3b levels remained unchanged. Additionally, PbRVE6 was localized to the nucleus. Overexpression of PbRVE6 in 'Zaosu' pear pericarp significantly increased anthocyanin content and upregulated key anthocyanin pathway genes PbANS and PbUFGT. Conversely, VIGS silencing of PbRVE6 in 'Red Palacer' pears led to decreased expression of PbANS and PbUFGT and a slight reduction in anthocyanin content. Yeast one-hybrid and dual-luciferase assays confirmed that PbRVE6 can bind and activate the promoters of PbANS and PbUFGT. These findings demonstrate that PbRVE6 promotes anthocyanin accumulation in pear peel by directly regulating PbANS and PbUFGT expression. This study provides a valuable foundation for understanding the regulatory network of anthocyanins in pear peels, and offers potential genetic resources for the production of new pear germplasm.
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