An ARF gene mutation creates flint kernel architecture in dent maize

文献类型： 外文期刊

第一作者： Wang, Haihai

作者： Wang, Haihai;Huang, Yongcai;Li, Yujie;Cui, Yahui;Xiang, Xiaoli;Zhu, Yidong;Wang, Qiong;Ma, Guangjin;Xiao, Qiao;Huang, Xing;Gao, Xiaoyan;Wang, Jiechen;Wu, Yongrui;Huang, Yongcai;Li, Yujie;Zhu, Yidong;Ma, Guangjin;Xiao, Qiao;Huang, Xing;Wang, Xiaoqing;Lu, Xiaoduo;Larkins, Brian A.;Wang, Wenqin

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.7； 五年影响因子：16.1 ）

ISSN：

年卷期： 2024 年 15 卷 1 期

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收录情况： SCI

摘要： Dent and flint kernel architectures are important characteristics that affect the physical properties of maize kernels and their grain end uses. The genes controlling these traits are unknown, so it is difficult to combine the advantageous kernel traits of both. We found mutation of ARFTF17 in a dent genetic background reduces IAA content in the seed pericarp, creating a flint-like kernel phenotype. ARFTF17 is highly expressed in the pericarp and encodes a protein that interacts with and inhibits MYB40, a transcription factor with the dual functions of repressing PIN1 expression and transactivating genes for flavonoid biosynthesis. Enhanced flavonoid biosynthesis could reduce the metabolic flux responsible for auxin biosynthesis. The decreased IAA content of the dent pericarp appears to reduce cell division and expansion, creating a shorter, denser kernel. Introgression of the ARFTF17 mutation into dent inbreds and hybrids improved their kernel texture, integrity, and desiccation, without affecting yield.

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