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SLR1 inhibits MOC1 degradation to coordinate tiller number and plant height in rice

Author

Listed:
  • Zhigang Liao

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

  • Hong Yu

    (Chinese Academy of Sciences)

  • Jingbo Duan

    (Chinese Academy of Sciences)

  • Kun Yuan

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

  • Chaoji Yu

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

  • Xiangbing Meng

    (Chinese Academy of Sciences)

  • Liquan Kou

    (Chinese Academy of Sciences)

  • Mingjiang Chen

    (Chinese Academy of Sciences)

  • Yanhui Jing

    (Chinese Academy of Sciences)

  • Guifu Liu

    (Chinese Academy of Sciences)

  • Steven M. Smith

    (Chinese Academy of Sciences
    University of Tasmania)

  • Jiayang Li

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

Abstract

The breeding of cereals with altered gibberellin (GA) signaling propelled the ‘Green Revolution’ by generating semidwarf plants with increased tiller number. The mechanism by which GAs promote shoot height has been studied extensively, but it is not known what causes the inverse relationship between plant height and tiller number. Here we show that rice tiller number regulator MONOCULM 1 (MOC1) is protected from degradation by binding to the DELLA protein SLENDER RICE 1 (SLR1). GAs trigger the degradation of SLR1, leading to stem elongation and also to the degradation of MOC1, and hence a decrease in tiller number. This discovery provides a molecular explanation for the coordinated control of plant height and tiller number in rice by GAs, SLR1 and MOC1.

Suggested Citation

  • Zhigang Liao & Hong Yu & Jingbo Duan & Kun Yuan & Chaoji Yu & Xiangbing Meng & Liquan Kou & Mingjiang Chen & Yanhui Jing & Guifu Liu & Steven M. Smith & Jiayang Li, 2019. "SLR1 inhibits MOC1 degradation to coordinate tiller number and plant height in rice," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10667-2
    DOI: 10.1038/s41467-019-10667-2
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    Cited by:

    1. Lulu Li & Hehong Zhang & Zihang Yang & Chen Wang & Shanshan Li & Chen Cao & Tongsong Yao & Zhongyan Wei & Yanjun Li & Jianping Chen & Zongtao Sun, 2022. "Independently evolved viral effectors convergently suppress DELLA protein SLR1-mediated broad-spectrum antiviral immunity in rice," Nature Communications, Nature, vol. 13(1), pages 1-16, December.
    2. Gao, Jia & Zhang, Yingjun & Xu, Chenchen & Wang, Pu & Huang, Shoubing & Lv, Yanjie, 2024. "Enhancing spatial and temporal coordination of soil water and root growth to improve maize (Zea mays L.) yield," Agricultural Water Management, Elsevier, vol. 294(C).

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