Cell polarity linked to gravity sensing is generated by LZY translocation from statoliths to the plasma membrane

DOI Web Site 参考文献69件 オープンアクセス
  • Takeshi Nishimura
    Division of Plant Environmental Responses, National Institute for Basic Biology, Okazaki 444-8585, Japan.
  • Shogo Mori
    Division of Plant Environmental Responses, National Institute for Basic Biology, Okazaki 444-8585, Japan.
  • Hiromasa Shikata
    Division of Plant Environmental Responses, National Institute for Basic Biology, Okazaki 444-8585, Japan.
  • Moritaka Nakamura
    Division of Plant Environmental Responses, National Institute for Basic Biology, Okazaki 444-8585, Japan.
  • Yasuko Hashiguchi
    Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan.
  • Yoshinori Abe
    Department of Biochemistry and Molecular Biology, Saitama University, Saitama 338-8570, Japan.
  • Takuma Hagihara
    Department of Biochemistry and Molecular Biology, Saitama University, Saitama 338-8570, Japan.
  • Hiroshi Y. Yoshikawa
    Department of Applied Physics, Osaka University, Suita 565-0871, Japan.
  • Masatsugu Toyota
    Department of Biochemistry and Molecular Biology, Saitama University, Saitama 338-8570, Japan.
  • Takumi Higaki
    Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan.
  • Miyo Terao Morita
    Division of Plant Environmental Responses, National Institute for Basic Biology, Okazaki 444-8585, Japan.

抄録

<jats:p>Organisms have evolved under gravitational force, and many sense the direction of gravity by means of statoliths in specialized cells. In flowering plants, starch-accumulating plastids, known as amyloplasts, act as statoliths to facilitate downstream gravitropism. The gravity-sensing mechanism has long been considered a mechanosensing process by which amyloplasts transmit forces to intracellular structures, but the molecular mechanism underlying this has not been elucidated. We show here that LAZY1-LIKE (LZY) family proteins involved in statocyte gravity signaling associate with amyloplasts and the proximal plasma membrane. This results in polar localization according to the direction of gravity. We propose a gravity-sensing mechanism by which LZY translocation to the plasma membrane signals the direction of gravity by transmitting information on the position of amyloplasts.</jats:p>

収録刊行物

  • Science

    Science 381 (6661), 1006-1010, 2023-09

    American Association for the Advancement of Science (AAAS)

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