Chromosome-level genome assembly assisting for dissecting mechanism of anthocyanin regulation in kiwifruit (Actinidia arguta)
文献类型： 外文期刊
作者： Li, Yukuo 1 ; Song, Zhe 1 ; Zhan, Xu 1 ; Li, Xiaohan 1 ; Ye, Lingshuai 1 ; Lin, Miaomiao 1 ; Wang, Ran 1 ; Huang, Hailei 5 ; Guo, Jian 6 ; Sun, Leiming 1 ; Gu, Hong 1 ; Chen, Jinyong 1 ; Fang, Jinbao 1 ; Qi, Xiujuan 1 ;
作者机构： 1.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Natl Key Lab Germplasm Innovat & Utilizat Hort Cro, Zhengzhou 450009, Peoples R China
2.Chinese Acad Agr Sci, Zhongyuan Res Ctr, Xinxiang 453500, Peoples R China
3.Zhengzhou Univ, Sch Agr Sci, Zhengzhou 450001, Peoples R China
4.Henan Univ Sci & Technol, Coll Hort & Plant Protect, Luoyang 471000, Peoples R China
5.Shiyan Econ Crops Res Inst, Shiyan, Peoples R China
6.Shandong Agr Univ, Coll Hort Sci & Engn, Tai An 271018, Peoples R China
关键词：
Genome assembly; Comparative genome; Gene expression; Anthocyanin biosynthesis;
期刊名称：MOLECULAR HORTICULTURE （ 影响因子：8.1； 五年影响因子：11.0 ）
ISSN： 2730-9401
年卷期： 2025 年 5 卷 1 期
页码：
收录情况： SCI
摘要： Actinidia arguta is a newly emerged, commercially cultivated Actinidia species. A. arguta has a beautiful appearance and is rich in anthocyanin, and is thus highly welcomed by consumers. However, the mechanism of anthocyanin regulation in A. arguta remains unclear. In this study, we assembled the nearly complete genome of the first red A. arguta cultivar, 'Tianyuanhong', with an N50 of 21 Mb. Comparative genome analysis revealed a role of the expansion/contraction of gene families in the species-specific trait formation of A. arguta. Through verification of transient overexpression and stable transformation, RNA-seq analysis revealed a key bHLH transcription factor, AaBEE1, which negatively regulates anthocyanin biosynthesis. DAP-seq analysis combined with Y1H, EMSA, Chip-qPCR and LUC suggested that AaBEE1 binds to the G-box of the AaLDOX promoter and suppresses its expression. Overall, we assembled the genome of A. arguta and clarified its AaBEE1-AaLDOX module-mediated molecular mechanism of anthocyanin regulation.
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