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MPK3- and MPK6-mediated VLN3 phosphorylation regulates actin dynamics during stomatal immunity in Arabidopsis

Author

Listed:
  • Minxia Zou

    (Beijing Normal University)

  • Mengmeng Guo

    (Beijing Normal University)

  • Zhaoyang Zhou

    (China Agricultural University)

  • Bingxiao Wang

    (Beijing Normal University)

  • Qing Pan

    (Beijing Normal University)

  • Jiajing Li

    (Beijing Normal University)

  • Jian-Min Zhou

    (State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jiejie Li

    (Beijing Normal University
    Beijing Normal University)

Abstract

Upon perception of pathogens, plants can rapidly close their stomata to restrict pathogen entry into internal tissue, leading to stomatal immunity as one aspect of innate immune responses. The actin cytoskeleton is required for plant defense against microbial invaders. However, the precise functions of host actin during plant immunity remain largely unknown. Here, we report that Arabidopsis villin3 (VLN3) is critical for plant resistance to bacteria by regulating stomatal immunity. Our in vitro and in vivo phosphorylation assays show that VLN3 is a physiological substrate of two pathogen-responsive mitogen-activated protein kinases, MPK3/6. Quantitative analyses of actin dynamics and genetic studies reveal that VLN3 phosphorylation by MPK3/6 modulates actin remodeling to activate stomatal defense in Arabidopsis.

Suggested Citation

  • Minxia Zou & Mengmeng Guo & Zhaoyang Zhou & Bingxiao Wang & Qing Pan & Jiajing Li & Jian-Min Zhou & Jiejie Li, 2021. "MPK3- and MPK6-mediated VLN3 phosphorylation regulates actin dynamics during stomatal immunity in Arabidopsis," Nature Communications, Nature, vol. 12(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26827-2
    DOI: 10.1038/s41467-021-26827-2
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    References listed on IDEAS

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    1. Yi-Ju Lu & Pai Li & Masaki Shimono & Alex Corrion & Takumi Higaki & Sheng Yang He & Brad Day, 2020. "Arabidopsis calcium-dependent protein kinase 3 regulates actin cytoskeleton organization and immunity," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    2. Jiejie Li & Jessica L. Henty-Ridilla & Benjamin H. Staiger & Brad Day & Christopher J. Staiger, 2015. "Capping protein integrates multiple MAMP signalling pathways to modulate actin dynamics during plant innate immunity," Nature Communications, Nature, vol. 6(1), pages 1-13, November.
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    Cited by:

    1. Timothy J. Hawkins & Michaela Kopischke & Patrick J. Duckney & Katarzyna Rybak & David A. Mentlak & Johan T. M. Kroon & Mai Thu Bui & A. Christine Richardson & Mary Casey & Agnieszka Alexander & Geert, 2023. "NET4 and RabG3 link actin to the tonoplast and facilitate cytoskeletal remodelling during stomatal immunity," Nature Communications, Nature, vol. 14(1), pages 1-19, December.

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    1. Timothy J. Hawkins & Michaela Kopischke & Patrick J. Duckney & Katarzyna Rybak & David A. Mentlak & Johan T. M. Kroon & Mai Thu Bui & A. Christine Richardson & Mary Casey & Agnieszka Alexander & Geert, 2023. "NET4 and RabG3 link actin to the tonoplast and facilitate cytoskeletal remodelling during stomatal immunity," Nature Communications, Nature, vol. 14(1), pages 1-19, December.

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