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Nitrogen nutrition contributes to plant fertility by affecting meiosis initiation

Author

Listed:
  • Han Yang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yafei Li

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yiwei Cao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Wenqing Shi

    (Chinese Academy of Sciences)

  • En Xie

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Na Mu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Guijie Du

    (Chinese Academy of Sciences)

  • Yi Shen

    (Chinese Academy of Sciences)

  • Ding Tang

    (Chinese Academy of Sciences)

  • Zhukuan Cheng

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Yangzhou University)

Abstract

Nitrogen (N), one of the most important plant nutrients, plays crucial roles in multiple plant developmental processes. Spikelets are the primary sink tissues during reproductive growth, and N deficiency can cause floral abortion. However, the roles of N nutrition in meiosis, the crucial step in plant sexual reproduction, are poorly understood. Here, we identified an N-dependent meiotic entrance mutant with loss of function of ELECTRON TRANSFER FLAVOPROTEIN SUBUNIT β (ETFβ) in rice (Oryza sativa). etfβ displayed meiosis initiation defects, excessive accumulation of branched-chain amino acids (BCAAs) and decrease in total N contents in spikelets under N starvation, which were rescued by applying excess exogenous inorganic N. Under N starvation, ETFβ, through its involvement in BCAA catabolism, promotes N reutilization and contributes to meeting N demands of spikelets, highlighting the impact of N nutrition on meiosis initiation. We conclude that N nutrition contributes to plant fertility by affecting meiosis initiation.

Suggested Citation

  • Han Yang & Yafei Li & Yiwei Cao & Wenqing Shi & En Xie & Na Mu & Guijie Du & Yi Shen & Ding Tang & Zhukuan Cheng, 2022. "Nitrogen nutrition contributes to plant fertility by affecting meiosis initiation," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28173-3
    DOI: 10.1038/s41467-022-28173-3
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    1. Shan Li & Yonghang Tian & Kun Wu & Yafeng Ye & Jianping Yu & Jianqing Zhang & Qian Liu & Mengyun Hu & Hui Li & Yiping Tong & Nicholas P. Harberd & Xiangdong Fu, 2018. "Modulating plant growth–metabolism coordination for sustainable agriculture," Nature, Nature, vol. 560(7720), pages 595-600, August.
    2. Yongqiang Liu & Hongru Wang & Zhimin Jiang & Wei Wang & Ruineng Xu & Qihui Wang & Zhihua Zhang & Aifu Li & Yan Liang & Shujun Ou & Xiujie Liu & Shouyun Cao & Hongning Tong & Yonghong Wang & Feng Zhou , 2021. "Genomic basis of geographical adaptation to soil nitrogen in rice," Nature, Nature, vol. 590(7847), pages 600-605, February.
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