Natural variation in SSW1 coordinates seed growth and nitrogen use efficiency in Arabidopsis
文献类型： 外文期刊
作者： Jiang, Shan 1 ; Jin, Ximing 1 ; Liu, Zebin 2 ; Xu, Ran 1 ; Hou, Congcong 2 ; Zhang, Fengxia 1 ; Fan, Chengming 1 ; Wu, Huilan 1 ; Chen, Tianyan 1 ; Shi, Jianghua 4 ; Hu, Zanmin 1 ; Wang, Guodong 1 ; Teng, Sheng 5 ; Li, Legong 2 ; Li, Yunhai 1 ;
作者机构： 1.Chinese Acad Sci, Inst Genet & Dev Biol, Key Lab Seed Innovat, State Key Lab Plant Genom, Beijing 100101, Peoples R China
2.Capital Normal Univ, Coll Life Sci, Beijing 100048, Peoples R China
3.Yunnan Univ, Coll Life Sci, Kunming 650500, Peoples R China
4.Zhejiang Acad Agr Sci, Inst Crop & Nucl Technol Utilizat, Hangzhou 310021, Peoples R China
5.Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, Lab Photosynth & Environm Biol, CAS Ctr Excellence Mol Plant Sci, Shanghai 200032, Peoples R China
6.Univ Chinese Acad Sci, Coll Adv Agr Sci, Beijing 100039, Peoples R China
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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