生物物理
Online ISSN : 1347-4219
Print ISSN : 0582-4052
ISSN-L : 0582-4052
49 巻 , 3 号
通巻283号
選択された号の論文の18件中1~18を表示しています
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  • 中村 守貴, 田坂 昌生, 森田(寺尾) 美代
    2009 年 49 巻 3 号 p. 116-121
    発行日: 2009年
    公開日: 2009/05/25
    ジャーナル フリー
    Higher plants reorient their growth direction by sensing the organ tilt relative to the direction of gravity (gravitropism). Historically famous “the starch statolith hypothesis” has explained how plants sense their organ tilt, that is, starch accumulating amyloplasts with high density sink like stones along the gravity vector in the cell, and then trigger subsequent signalings. Recent molecular genetic studies suggest that the sedimentation of amyloplasts is not a spontaneous event but is controlled by actin filaments and vacuolar membranes. This review mainly focuses on the mechanisms of gravity perception involving the amyloplasts movement and following signaling events during gravitropism.
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