Pepper variome reveals the history and key loci associated with fruit domestication and diversification

文献类型： 外文期刊

第一作者： Cao, Yacong

作者： Cao, Yacong;Zhang, Kang;Yu, Hailong;Chen, Shumin;Xu, Donghui;Zhao, Hong;Zhang, Zhenghai;Yang, Yinqing;Gu, Xiaozhen;Liu, Xinyan;Wang, Haiping;Jing, Yaxin;Mei, Yajie;Wang, Xiang;Zhang, Weili;Jin, Yuan;An, Dongliang;Li, Xixiang;Zhang, Baoxi;Wang, Lihao;Cheng, Feng;Lefebvre, Veronique;Wang, Risheng;Bosland, Paul;Paran, Ilan;Giuliano, Giovanni

作者机构：

关键词： Capsicum; variome; domestication; fruit orientation; pungency; fruit shape; sweet pepper; blocky fruit pepper; narrow fruit pepper

期刊名称：MOLECULAR PLANT （ 影响因子：27.5； 五年影响因子：22.6 ）

ISSN： 1674-2052

年卷期： 2022 年 15 卷 11 期

页码：

收录情况： SCI

摘要： Pepper (Capsicum spp.) is an important vegetable crop that provides a unique pungent sensation when eaten. Through construction of a pepper variome map, we examined the main groups that emerged during domestication and breeding of C. annuum, their relationships and temporal succession, and the molecular events underlying the main transitions. The results showed that the initial differentiation in fruit shape and pungency, increase in fruit weight, and transition from erect to pendent fruits, as well as the recent appear-ance of large, blocky, sweet fruits (bell peppers), were accompanied by strong selection/fixation of key alleles and introgressions in two large genomic regions. Furthermore, we identified Up, which encodes a BIG GRAIN protein involved in auxin transport, as a key domestication gene that controls erect vs pendent fruit orientation. The up mutation gained increased expression especially in the fruit pedicel through a 579 -bp sequence deletion in its 50 upstream region, resulting in the phenotype of pendent fruit. The function of Up was confirmed by virus-induced gene silencing. Taken together, these findings constitute a cornerstone for understanding the domestication and differentiation of a key horticultural crop.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序