Allelic variation of TaWD40-4B.1 contributes to drought tolerance by modulating catalase activity in wheat

文献类型： 外文期刊

第一作者： Tian, Geng

作者： Tian, Geng;Liu, Shuwei;Xia, Guangmin;Wang, Mengcheng;Wang, Shubin;Wu, Jianhui;Han, Dejun;Wang, Yanxia;Wang, Xiutang

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：16.6； 五年影响因子：17.0 ）

ISSN：

年卷期： 2023 年 14 卷 1 期

页码：

收录情况： SCI

摘要： Drought drastically restricts wheat production, so to dissect allelic variations of drought tolerant genes without imposing trade-offs between tolerance and yield is essential to cope with the circumstance. Here, we identify a drought tolerant WD40 protein encoding gene TaWD40-4B.1 of wheat via the genome-wide association study. The full-length allele TaWD40-4B.1(C) but not the truncated allele TaWD40-4B.1(T) possessing a nonsense nucleotide variation enhances drought tolerance and grain yield of wheat under drought. TaWD40-4B.1(C) interacts with canonical catalases, promotes their oligomerization and activities, and reduces H2O2 levels under drought. The knock-down of catalase genes erases the role of TaWD40-4B.1(C) in drought tolerance. TaWD40-4B.1(C) proportion in wheat accessions is negatively correlative with the annual rainfall, suggesting this allele may be selected during wheat breeding. The introgression of TaWD40-4B.1(C) enhances drought tolerance of the cultivar harboring TaWD40-4B.1(T). Therefore, TaWD40-4B.1(C) could be useful for molecular breeding of drought tolerant wheat.

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