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Endomembrane trafficking driven by microtubule growth regulates stomatal movement in Arabidopsis

Author

Listed:
  • Hua Zhong

    (China Agricultural University)

  • Shuwei Wang

    (China Agricultural University)

  • Yaohui Huang

    (China Agricultural University)

  • Xiankui Cui

    (China Agricultural University)

  • Xuening Ding

    (China Agricultural University)

  • Lei Zhu

    (China Agricultural University)

  • Ming Yuan

    (China Agricultural University)

  • Ying Fu

    (China Agricultural University
    China Agricultural University)

Abstract

Microtubule-based vesicle trafficking usually relies upon kinesin and dynein motors and few reports describe microtubule polymerisation driving directional vesicle trafficking. Here we show that Arabidopsis END BINDING1b (EB1b), a microtubule plus-end binding protein, directly interacts with SYP121, a SNARE protein that mediates the trafficking of the K+ channel KAT1 and its distribution to the plasma membrane (PM) in Arabidopsis guard cells. Knockout of AtEB1b and its homologous proteins results in a modest but significant change in the distribution of KAT1 and SYP121 in guard cells and consequently delays light-induced stomatal opening. Live-cell imaging reveals that a portion of SYP121-associated endomembrane compartments co-localise with AtEB1b at the growing ends of microtubules, trafficking along with the growth of microtubules for targeting to the PM. Our study reveals a mechanism of vesicle trafficking driven by microtubule growth, which is involved in the redistribution of PM proteins to modulate guard cell movement.

Suggested Citation

  • Hua Zhong & Shuwei Wang & Yaohui Huang & Xiankui Cui & Xuening Ding & Lei Zhu & Ming Yuan & Ying Fu, 2024. "Endomembrane trafficking driven by microtubule growth regulates stomatal movement in Arabidopsis," Nature Communications, Nature, vol. 15(1), pages 1-15, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-52338-x
    DOI: 10.1038/s41467-024-52338-x
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    References listed on IDEAS

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    1. Lu Liu & Ting Wang & Yifan Bai & Pengcheng Yan & Liufeng Dai & Pingzhou Du & Staffan Persson & Yi Zhang, 2023. "Actomyosin and CSI1/POM2 cooperate to deliver cellulose synthase from Golgi to cortical microtubules in Arabidopsis," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    2. Liru Dou & Kaikai He & Jialin Peng & Xiangfeng Wang & Tonglin Mao, 2021. "The E3 ligase MREL57 modulates microtubule stability and stomatal closure in response to ABA," Nature Communications, Nature, vol. 12(1), pages 1-15, December.
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