植物细胞膜中的膨压感应。
Turgor pressure sensing in plant cell membranes.
机构信息
Biophysics Laboratory, School of Physics, The University of New South Wales, Kensington, N.S.W. 2033 Australia.
出版信息
Plant Physiol. 1976 Nov;58(5):636-43. doi: 10.1104/pp.58.5.636.
Abstract
Experimental evidence is reviewed which shows that the cell membrane is compressible by both mechanical and electrical forces. Calculations are given which show that significant changes in the thickness of cell membranes can occur as a result of (a) direct compression due to the turgor pressure; (b) indirect effects due to the stretching of the cell wall; and (c) the stresses induced by the electric field in the membrane.Such changes in the membrane thickness may provide the pressure-transducing mechanism required for osmoregulation and growth. An important feature of the model is that this pressure transduction can occur not only in the plasmalemma (where there is a pressure gradient), but also in the tonoplast.
摘要
本文回顾了实验证据，表明细胞膜可以受到机械力和电力的压缩。计算表明，细胞膜厚度会发生显著变化，原因包括：(a) 膨压引起的直接压缩；(b) 细胞壁拉伸引起的间接影响；(c) 膜电场引起的应力。这种细胞膜厚度的变化可能为渗透调节和生长提供所需的压力转换机制。该模型的一个重要特点是，这种压力转换不仅可以发生在质膜（存在压力梯度的地方），也可以发生在液泡膜。
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本文引用的文献
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