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Molecular basis of methyl-salicylate-mediated plant airborne defence

Author

Listed:
  • Qian Gong

    (Tsinghua University
    Tsinghua-Peking Center for Life Sciences)

  • Yunjing Wang

    (Tsinghua University
    Tsinghua-Peking Center for Life Sciences)

  • Linfang He

    (Tsinghua University
    Tsinghua-Peking Center for Life Sciences)

  • Fan Huang

    (Tsinghua University
    Tsinghua-Peking Center for Life Sciences)

  • Danfeng Zhang

    (Tsinghua University
    Tsinghua-Peking Center for Life Sciences)

  • Yan Wang

    (Tsinghua University
    Tsinghua-Peking Center for Life Sciences)

  • Xiang Wei

    (Tsinghua University)

  • Meng Han

    (Tsinghua University)

  • Haiteng Deng

    (Tsinghua University)

  • Lan Luo

    (Chinese Academy of Sciences)

  • Feng Cui

    (Chinese Academy of Sciences)

  • Yiguo Hong

    (Hebei Agricultural University
    Hangzhou Normal University
    University of Warwick
    University of Worcester)

  • Yule Liu

    (Tsinghua University
    Tsinghua-Peking Center for Life Sciences)

Abstract

Aphids transmit viruses and are destructive crop pests1. Plants that have been attacked by aphids release volatile compounds to elicit airborne defence (AD) in neighbouring plants2–5. However, the mechanism underlying AD is unclear. Here we reveal that methyl-salicylate (MeSA), salicylic acid-binding protein-2 (SABP2), the transcription factor NAC2 and salicylic acid-carboxylmethyltransferase-1 (SAMT1) form a signalling circuit to mediate AD against aphids and viruses. Airborne MeSA is perceived and converted into salicylic acid by SABP2 in neighbouring plants. Salicylic acid then causes a signal transduction cascade to activate the NAC2–SAMT1 module for MeSA biosynthesis to induce plant anti-aphid immunity and reduce virus transmission. To counteract this, some aphid-transmitted viruses encode helicase-containing proteins to suppress AD by interacting with NAC2 to subcellularly relocalize and destabilize NAC2. As a consequence, plants become less repellent to aphids, and more suitable for aphid survival, infestation and viral transmission. Our findings uncover the mechanistic basis of AD and an aphid–virus co-evolutionary mutualism, demonstrating AD as a potential bioinspired strategy to control aphids and viruses.

Suggested Citation

  • Qian Gong & Yunjing Wang & Linfang He & Fan Huang & Danfeng Zhang & Yan Wang & Xiang Wei & Meng Han & Haiteng Deng & Lan Luo & Feng Cui & Yiguo Hong & Yule Liu, 2023. "Molecular basis of methyl-salicylate-mediated plant airborne defence," Nature, Nature, vol. 622(7981), pages 139-148, October.
    • Handle: RePEc:nat:nature:v:622:y:2023:i:7981:d:10.1038_s41586-023-06533-3
    DOI: 10.1038/s41586-023-06533-3
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    Cited by:

    1. Jing-Ru Zhang & Yi-Ming Liu & Di Li & Yi-Jie Wu & Shi-Xing Zhao & Xiao-Wei Wang & Shu-Sheng Liu & Linda L. Walling & Li-Long Pan, 2024. "Viral proteins resolve the virus-vector conundrum during hemipteran-mediated transmission by subverting salicylic acid signaling pathway," Nature Communications, Nature, vol. 15(1), pages 1-17, December.

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