Natural variation in SSW1 coordinates seed growth and nitrogen use efficiency in Arabidopsis

文献类型： 外文期刊

第一作者： Jiang, Shan

作者： Jiang, Shan;Jin, Ximing;Xu, Ran;Zhang, Fengxia;Fan, Chengming;Wu, Huilan;Chen, Tianyan;Hu, Zanmin;Wang, Guodong;Li, Yunhai;Liu, Zebin;Hou, Congcong;Li, Legong;Chen, Tianyan;Shi, Jianghua;Teng, Sheng;Wang, Guodong;Li, Yunhai

作者机构：

期刊名称：CELL REPORTS （ 影响因子：8.8； 五年影响因子：9.9 ）

ISSN： 2211-1247

年卷期： 2024 年 43 卷 5 期

页码：

收录情况： SCI

摘要： Seed size is controlled not only by intrinsic genetic factors but also by external environmental signals. Here, we report a major quantitative trait locus (QTL) gene for seed size and weight on chromosome 1 ( SSW1 ) in Arabidopsis , and we found SSW1 acts maternally to positively regulate seed size. Natural variation in SSW1 contains three types of alleles. The SSW1 Cvi allele produces larger seeds with more amino acid and storage protein contents than the SSW1 Ler allele. SSW1 Cvi displays higher capacity for amino acid transport than SSW1 L er due to the differences in transport efficiency. Under low nitrogen supply, the SSW1 Cvi allele exhibits increased seed yield and nitrogen use efficiency (NUE). Locations of natural variation alleles of SSW1 are associated with local soil nitrogen contents, suggesting that SSW1 might contribute to geographical adaptation in Arabidopsis . Thus, our findings reveal a mechanism that coordinates seed growth and NUE, suggesting a potential target for improving seed yield and NUE in crops.

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