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A palisade-shaped membrane reservoir is required for rapid ring cell inflation in Drechslerella dactyloides

Author

Listed:
  • Yue Chen

    (Nankai University)

  • Jia Liu

    (Nankai University)

  • Seogchan Kang

    (The Pennsylvania State University)

  • Dongsheng Wei

    (Nankai University)

  • Yani Fan

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Meichun Xiang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xingzhong Liu

    (Nankai University
    Chinese Academy of Sciences)

Abstract

Fusion of individual vesicles carrying membrane-building materials with the plasma membrane (PM) enables gradual cell expansion and shape change. Constricting ring (CR) cells of carnivorous fungi triple in size within 0.1-1 s to capture passing nematodes. Here, we investigated how a carnivorous fungus, Drechslerella dactyloides, executes rapid and irreversible PM expansion during CR inflation. During CR maturation, vesicles carrying membrane-building materials accumulate and fuse, forming a structure named the Palisade-shaped Membrane-building Structure (PMS) around the rumen side of ring cells. After CR inflation, the PMS disappears, with partially inflated cells displaying wavy PM and fully inflated cells exhibiting smooth PM, suggesting that the PMS serves as the reservoir for membrane-building materials to enable rapid and extensive PM expansion. The DdSnc1, a v-SNARE protein, accumulates at the inner side of ring cells and is necessary for PMS formation and CR inflation. This study elucidates the unique cellular mechanisms underpinning rapid CR inflation.

Suggested Citation

  • Yue Chen & Jia Liu & Seogchan Kang & Dongsheng Wei & Yani Fan & Meichun Xiang & Xingzhong Liu, 2023. "A palisade-shaped membrane reservoir is required for rapid ring cell inflation in Drechslerella dactyloides," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43235-w
    DOI: 10.1038/s41467-023-43235-w
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    References listed on IDEAS

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    1. James A. McNew & Francesco Parlati & Ryouichi Fukuda & Robert J. Johnston & Keren Paz & Fabienne Paumet & Thomas H. Söllner & James E. Rothman, 2000. "Compartmental specificity of cellular membrane fusion encoded in SNARE proteins," Nature, Nature, vol. 407(6801), pages 153-159, September.
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