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Histidine kinase MHZ1/OsHK1 interacts with ethylene receptors to regulate root growth in rice

Author

Listed:
  • He Zhao

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Kai-Xuan Duan

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Biao Ma

    (University of Science and Technology Beijing)

  • Cui-Cui Yin

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences)

  • Yang Hu

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jian-Jun Tao

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences)

  • Yi-Hua Huang

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Wu-Qiang Cao

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Hui Chen

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Chao Yang

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences)

  • Zhi-Guo Zhang

    (Biotechnology Research Institute/National Key Facility for Genetic Resources and Gene Improvement, Chinese Academy of Agricultural Sciences)

  • Si-Jie He

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences)

  • Wan-Ke Zhang

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences)

  • Xiang-Yuan Wan

    (University of Science and Technology Beijing)

  • Tie-Gang Lu

    (Biotechnology Research Institute/National Key Facility for Genetic Resources and Gene Improvement, Chinese Academy of Agricultural Sciences)

  • Shou-Yi Chen

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences)

  • Jin-Song Zhang

    (State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Ethylene plays essential roles during adaptive responses to water-saturating environments in rice, but knowledge of its signaling mechanism remains limited. Here, through an analysis of a rice ethylene-response mutant mhz1, we show that MHZ1 positively modulates root ethylene responses. MHZ1 encodes the rice histidine kinase OsHK1. MHZ1/OsHK1 is autophosphorylated at a conserved histidine residue and can transfer the phosphoryl signal to the response regulator OsRR21 via the phosphotransfer proteins OsAHP1/2. This phosphorelay pathway is required for root ethylene responses. Ethylene receptor OsERS2, via its GAF domain, physically interacts with MHZ1/OsHK1 and inhibits its kinase activity. Genetic analyses suggest that MHZ1/OsHK1 acts at the level of ethylene perception and works together with the OsEIN2-mediated pathway to regulate root growth. Our results suggest that MHZ1/OsHK1 mediates the ethylene response partially independently of OsEIN2, and is directly inhibited by ethylene receptors, thus revealing mechanistic details of ethylene signaling for root growth regulation.

Suggested Citation

  • He Zhao & Kai-Xuan Duan & Biao Ma & Cui-Cui Yin & Yang Hu & Jian-Jun Tao & Yi-Hua Huang & Wu-Qiang Cao & Hui Chen & Chao Yang & Zhi-Guo Zhang & Si-Jie He & Wan-Ke Zhang & Xiang-Yuan Wan & Tie-Gang Lu , 2020. "Histidine kinase MHZ1/OsHK1 interacts with ethylene receptors to regulate root growth in rice," Nature Communications, Nature, vol. 11(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14313-0
    DOI: 10.1038/s41467-020-14313-0
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    Cited by:

    1. Xin-Kai Li & Yi-Hua Huang & Rui Zhao & Wu-Qiang Cao & Long Lu & Jia-Qi Han & Yang Zhou & Xun Zhang & Wen-Ai Wu & Jian-Jun Tao & Wei Wei & Wan-Ke Zhang & Shou-Yi Chen & Biao Ma & He Zhao & Cui-Cui Yin , 2024. "Membrane protein MHZ3 regulates the on-off switch of ethylene signaling in rice," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    2. Yi-Hua Huang & Jia-Qi Han & Biao Ma & Wu-Qiang Cao & Xin-Kai Li & Qing Xiong & He Zhao & Rui Zhao & Xun Zhang & Yang Zhou & Wei Wei & Jian-Jun Tao & Wan-Ke Zhang & Wenfeng Qian & Shou-Yi Chen & Chao Y, 2023. "A translational regulator MHZ9 modulates ethylene signaling in rice," Nature Communications, Nature, vol. 14(1), pages 1-17, December.

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