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Rice NIN-LIKE PROTEIN 4 plays a pivotal role in nitrogen use efficiency

文献类型： 外文期刊

作者： Wu, Jie 1 ; Zhang, Zi-Sheng 1 ; Xia, Jin-Qiu 1 ; Alfatih, Alamin 1 ; Song, Ying 1 ; Huang, Yi-Jie 1 ; Wan, Guang-Yu 1 ; S 1 ;

作者机构： 1.Univ Sci & Technol China, Sch Life Sci, Innovat Acad Seed Design, Chinese Acad Sci, Hefei, Anhui, Peoples R China

2.Univ Sci & Technol China, Sch Life Sci, Div Mol & Cell Biophys,Chinese Acad Sci, Hefei Natl Sci Ctr Phys Sci Microscale,Innovat Ac, Hefei, Anhui, Peoples R China

3.Anhui Acad Agr Sci, Rice Res Inst, Hefei, Peoples R China

4.Sichuan Agr Univ, Rice Res Inst, State Key Lab Hybrid Rice, Chengdu, Sichuan, Peoples R China

5.Zhejiang Univ, State Key Lab Plant Physiol & Biochem, Coll Life Sci, Hangzhou, Peoples R China

6.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangzhou, Peoples R China

7.Chinese Acad Sci, State Key Lab Plant Genom, Inst Genet & Dev Biol, Beijing, Peoples R China

8.Chinese Acad Sci, Natl Ctr Plant Gene Res Beijing, Inst Genet & Dev Biol, Beijing, Peoples R China

9.Brookhaven Natl Lab, Dept Biol, New York, NY 11973 USA

关键词： nitrogen use efficiency; NIN-like protein; OsNLP4; nitrate uptake and assimilation; nitrogen deficiency; grain yield

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：9.803； 五年影响因子：9.555 ）

ISSN： 1467-7644

年卷期：

页码：

收录情况： SCI

摘要： Nitrogen (N) is one of the key essential macronutrients that affects rice growth and yield. Inorganic N fertilizers are excessively used to boost yield and generate serious collateral environmental pollution. Therefore, improving crop N use efficiency (NUE) is highly desirable and has been a major endeavour in crop improvement. However, only a few regulators have been identified that can be used to improve NUE in rice to date. Here we show that the rice NIN-like protein 4 (OsNLP4) significantly improves the rice NUE and yield. Field trials consistently showed that loss-of-OsNLP4dramatically reduced yield and NUE compared with wild type under different N regimes. In contrast, theOsNLP4overexpression lines remarkably increased yield by 30% and NUE by 47% under moderate N level compared with wild type. Transcriptomic analyses revealed that OsNLP4 orchestrates the expression of a majority of known N uptake, assimilation and signalling genes by directly binding to the nitrate-responsivecis-element in their promoters to regulate their expression. Moreover, overexpression ofOsNLP4can recover the phenotype of Arabidopsisnlp7mutant and enhance its biomass. Our results demonstrate that OsNLP4 plays a pivotal role in rice NUE and sheds light on crop NUE improvement.

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