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An anthocyanin acyltransferase TaMAT1a-2B mediates salt tolerance by regulating anthocyanin acylation in wheat

文献类型： 外文期刊

作者： Lu, Yifan 1 ; Zhou, Runxin 1 ; Zeng, Meng 1 ; Xu, Kewen 1 ; Teng, Lidong 1 ; Zhou, Meixue 3 ; Fan, Xiangyun 2 ; Cao, Fangbin 1 ;

作者机构： 1.Zhejiang Univ, Coll Agr & Biotechnol, Dept Agron, Zijingang Campus, Hangzhou 310058, Peoples R China

2.Jiangsu Acad Agr Sci, Prov Key Lab Agrobiol, 50 Zhongling St, Nanjing 210014, Jiangsu, Peoples R China

3.Univ Tasmania, Tasmanian Inst Agr, Dynnyrne, Tas, Australia

期刊名称：CELL REPORTS （ 影响因子：6.9； 五年影响因子：8.1 ）

ISSN： 2211-1247

年卷期： 2025 年 44 卷 9 期

页码：

收录情况： SCI

摘要： Soil salinity induces oxidative damage and significantly reduces crop yield. The modification of anthocyanins is crucial for crop responses to abiotic stress due to their high capacity for scavenging redox oxygen species (ROSs); however, the regulatory mechanisms governing this process in wheat remain limited. Through genome-wide analysis and transcriptome sequencing, we identify that TaMAT1a-2B, a gene associated with salt tolerance, is involved in the acylation modification of anthocyanin. Overexpression of TaMAT1a-2B significantly enhances salt tolerance by elevating acylated anthocyanin levels and decreasing ROS accumulation. Conversely, silencing TaMAT1a-2B increases salt sensitivity. TaLBD27-3D functions upstream of TaMAT1a-2B, negatively regulating its expression and thereby reducing salt tolerance. Plants with silenced TaLBD27-3D show a phenotype similar to those of TaMAT1a-2B-overexpression lines, characterized by enhanced biomass and decreased ROS content compared to the wild type. Our findings highlight the critical role of the TaLBD27-3D-TaMAT1a-2B module in modulating salt tolerance in wheat.

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