Variation in a single allele drives divergent yield responses to elevated CO2 between rice subspecies
文献类型： 外文期刊
作者： Liu, Yunlong 1 ; Zhang, Siyu 1 ; Qian, Haoyu 2 ; Shen, Chengbo 1 ; Hu, Shuijin 4 ; Zhang, Weijian 5 ; Wang, Yong 6 ; Huang, Shan 6 ; Wang, Songhan 2 ; Liu, Zhenghui 2 ; Li, Ganghua 2 ; Fu, Xiangdong 8 ; Ding, Yanfeng 1 ; Li, Shan 1 ; van Groenigen, Kees Jan 10 ; Jiang, Yu 1 ;
作者机构： 1.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement &, Nanjing, Peoples R China
2.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Nanjing, Peoples R China
3.Nanjing Agr Univ, Key Lab Crop Physiol & Ecol Southern China, Nanjing, Peoples R China
4.North Carolina State Univ, Dept Entomol & Plant Pathol, Raleigh, NC USA
5.Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China
6.Jiangxi Agr Univ, Minist Educ, Nanchang, Peoples R China
7.Jiangxi Agr Univ, Jiangxi Key Lab Crop Physiol Ecol & Genet Breeding, Nanchang, Peoples R China
8.Chinese Acad Sci, Innovat Acad Seed Design, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing, Peoples R China
9.Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China
10.Univ Exeter, Dept Geog, Fac Environm Sci & Econ, Exeter, England
期刊名称：NATURE COMMUNICATIONS （ 影响因子：15.7； 五年影响因子：17.2 ）
ISSN：
年卷期： 2025 年 16 卷 1 期
页码：
收录情况： SCI
摘要： Rising atmospheric CO2 generally increases yield of indica rice, one of the two main Asian cultivated rice subspecies, more strongly than japonica rice, the other main subspecies. The molecular mechanisms driving this difference remain unclear, limiting the potential of future rice yield increases through breeding efforts. Here, we show that between-species variation in the DNR1 (DULL NITROGEN RESPONSE1) allele, a regulator of nitrate-use efficiency in rice plants, explains the divergent response to elevated atmospheric CO2 (eCO2) conditions. eCO2 increased rice yield by 22.8-32.3% in plants carrying or mimicking the indica DNR1 allele, but only by 3.6-11.1% in plants carrying the japonica DNR1 allele. Rice plants carrying or mimicking the indica DNR1 allele exhibit decreased eCO2-responsive transcription and protein abundance of DNR1, which activates genes involved in nitrate transport and assimilation, driving the increase in plant growth. Our findings identify the indica DNR1 gene as a key breeding resource for sustainably enhancing nitrate uptake and rice yields in japonica varieties, potentially contributing to global food security as atmospheric CO2 levels continue to increase.
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