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Transcriptional regulation of PIN genes by FOUR LIPS and MYB88 during Arabidopsis root gravitropism

Author

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  • Hong-Zhe Wang

    (Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan (Fragrant Hill), Haidian, Beijing 100093, China
    University of Chinese Academy of Sciences)

  • Ke-Zhen Yang

    (Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan (Fragrant Hill), Haidian, Beijing 100093, China)

  • Jun-Jie Zou

    (Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan (Fragrant Hill), Haidian, Beijing 100093, China)

  • Ling-Ling Zhu

    (Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan (Fragrant Hill), Haidian, Beijing 100093, China
    University of Chinese Academy of Sciences)

  • Zi Dian Xie

    (Center for Applied Plant Sciences, The Ohio State University)

  • Miyo Terao Morita

    (Graduate School of Bioagricultural Sciences, Nagoya University)

  • Masao Tasaka

    (Graduate School of Biological Sciences, Nara Institute of Science and Technology)

  • Jiří Friml

    (Institute of Science and Technology of Austria)

  • Erich Grotewold

    (Center for Applied Plant Sciences, The Ohio State University)

  • Tom Beeckman

    (VIB
    Ghent University)

  • Steffen Vanneste

    (VIB
    Ghent University)

  • Fred Sack

    (University of British Columbia)

  • Jie Le

    (Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan (Fragrant Hill), Haidian, Beijing 100093, China)

Abstract

PIN proteins are auxin export carriers that direct intercellular auxin flow and in turn regulate many aspects of plant growth and development including responses to environmental changes. The Arabidopsis R2R3-MYB transcription factor FOUR LIPS (FLP) and its paralogue MYB88 regulate terminal divisions during stomatal development, as well as female reproductive development and stress responses. Here we show that FLP and MYB88 act redundantly but differentially in regulating the transcription of PIN3 and PIN7 in gravity-sensing cells of primary and lateral roots. On the one hand, FLP is involved in responses to gravity stimulation in primary roots, whereas on the other, FLP and MYB88 function complementarily in establishing the gravitropic set-point angles of lateral roots. Our results support a model in which FLP and MYB88 expression specifically determines the temporal-spatial patterns of PIN3 and PIN7 transcription that are closely associated with their preferential functions during root responses to gravity.

Suggested Citation

  • Hong-Zhe Wang & Ke-Zhen Yang & Jun-Jie Zou & Ling-Ling Zhu & Zi Dian Xie & Miyo Terao Morita & Masao Tasaka & Jiří Friml & Erich Grotewold & Tom Beeckman & Steffen Vanneste & Fred Sack & Jie Le, 2015. "Transcriptional regulation of PIN genes by FOUR LIPS and MYB88 during Arabidopsis root gravitropism," Nature Communications, Nature, vol. 6(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9822
    DOI: 10.1038/ncomms9822
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