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RD26 mediates crosstalk between drought and brassinosteroid signalling pathways

Author

Listed:
  • Huaxun Ye

    (Development and Cell Biology, Iowa State University
    Present addresses: Dupont Pioneer Inc., Johnston, Iowa 50131, USA (H.Y.);)

  • Sanzhen Liu

    (Iowa State University
    Data2Bio LLC
    Present addresses: Department of Plant Pathology, Kansas State University, Manhattan, Kansas 66506-5502, USA (S.L.);)

  • Buyun Tang

    (Development and Cell Biology, Iowa State University
    Present addresses: Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA (B.T.))

  • Jiani Chen

    (Development and Cell Biology, Iowa State University)

  • Zhouli Xie

    (Development and Cell Biology, Iowa State University)

  • Trevor M. Nolan

    (Development and Cell Biology, Iowa State University)

  • Hao Jiang

    (Development and Cell Biology, Iowa State University)

  • Hongqing Guo

    (Development and Cell Biology, Iowa State University)

  • Hung-Ying Lin

    (Iowa State University)

  • Lei Li

    (Harvard Medical School)

  • Yanqun Wang

    (Harvard Medical School)

  • Hongning Tong

    (Institute of Genetics, Chinese Academy of Sciences)

  • Mingcai Zhang

    (State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University)

  • Chengcai Chu

    (Institute of Genetics, Chinese Academy of Sciences)

  • Zhaohu Li

    (State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University)

  • Maneesha Aluru

    (School of Biology, Georgia Institute of Technology)

  • Srinivas Aluru

    (School of Computational Science and Engineering, Georgia Institute of Technology)

  • Patrick S. Schnable

    (Iowa State University
    Data2Bio LLC)

  • Yanhai Yin

    (Development and Cell Biology, Iowa State University)

Abstract

Brassinosteroids (BRs) regulate plant growth and stress responses via the BES1/BZR1 family of transcription factors, which regulate the expression of thousands of downstream genes. BRs are involved in the response to drought, however the mechanistic understanding of interactions between BR signalling and drought response remains to be established. Here we show that transcription factor RD26 mediates crosstalk between drought and BR signalling. When overexpressed, BES1 target gene RD26 can inhibit BR-regulated growth. Global gene expression studies suggest that RD26 can act antagonistically to BR to regulate the expression of a subset of BES1-regulated genes, thereby inhibiting BR function. We show that RD26 can interact with BES1 protein and antagonize BES1 transcriptional activity on BR-regulated genes and that BR signalling can also repress expression of RD26 and its homologues and inhibit drought responses. Our results thus reveal a mechanism coordinating plant growth and drought tolerance.

Suggested Citation

  • Huaxun Ye & Sanzhen Liu & Buyun Tang & Jiani Chen & Zhouli Xie & Trevor M. Nolan & Hao Jiang & Hongqing Guo & Hung-Ying Lin & Lei Li & Yanqun Wang & Hongning Tong & Mingcai Zhang & Chengcai Chu & Zhao, 2017. "RD26 mediates crosstalk between drought and brassinosteroid signalling pathways," Nature Communications, Nature, vol. 8(1), pages 1-13, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14573
    DOI: 10.1038/ncomms14573
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    Cited by:

    1. Natalie M. Clark & Trevor M. Nolan & Ping Wang & Gaoyuan Song & Christian Montes & Conner T. Valentine & Hongqing Guo & Rosangela Sozzani & Yanhai Yin & Justin W. Walley, 2021. "Integrated omics networks reveal the temporal signaling events of brassinosteroid response in Arabidopsis," Nature Communications, Nature, vol. 12(1), pages 1-13, December.

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