您好，欢迎访问河南省农业科学院 机构知识库！
河南省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

The combination of DNA methylation and positive regulation of anthocyanin biosynthesis by MYB and bHLH transcription factors contributes to the petal blotch formation in Xibei tree peony

文献类型： 外文期刊

作者： Zhu, Jin 1 ; Wang, Yizhou 1 ; Wang, Qianyu 1 ; Li, Bing 1 ; Wang, Xiaohan 1 ; Zhou, Xian 1 ; Zhang, Hechen 4 ; Xu, Wenzhong 1 ; Li, Shanshan 1 ; Wang, Liangsheng 1 ;

作者机构： 1.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China

2.China Natl Bot Garden, Beijing 100093, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

4.Henan Acad Agr Sci, Hort Res Inst, Zhengzhou 450002, Peoples R China

期刊名称：HORTICULTURE RESEARCH （ 影响因子：8.7； 五年影响因子：9.0 ）

ISSN： 2662-6810

年卷期： 2023 年 10 卷 6 期

页码：

收录情况： SCI

摘要： Xibei tree peony is a distinctive cultivar group that features red-purple blotches in petals. Interestingly, the pigmentations of blotches and non-blotches are largely independent of one another. The underlying molecular mechanism had attracted lots of attention from investigators, but was still uncertain. Our present work demonstrates the factors that are closely related to blotch formation in Paeonia rockii 'Shu Sheng Peng Mo'. Non-blotch pigmentation is prevented by the silencing of anthocyanin structural genes, among which PrF3H, PrDFR, and PrANS are the three major genes. We characterized two R2R3-MYBs as the key transcription factors that control the early and late anthocyanin biosynthetic pathways. PrMYBa1, which belongs to MYB subgroup 7 (SG7) was found to activate the early biosynthetic gene (EBG) PrF3H by interacting with SG5 member PrMYBa2 to form an 'MM' complex. The SG6 member PrMYBa3 interacts with two SG5 (IIIf) bHLHs to synergistically activate the late biosynthetic genes (LBGs) PrDFR and PrANS, which is essential for anthocyanin accumulation in petal blotches. The comparison of methylation levels of the PrANS and PrF3H promoters between blotch and non-blotch indicated a correlation between hypermethylation and gene silencing. The methylation dynamics of PrANS promoter during flower development revealed a potential early demethylating reaction, which may have contributed to the particular expression of PrANS solely in the blotch area. We suggest that the formation of petal blotch may be highly associated with the cooperation of transcriptional activation and DNA methylation of structural gene promoters.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：河南省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台