MISC

2005年11月

Ionic mechanism of mechano-perception in characeae

PLANT AND CELL PHYSIOLOGY
  • K Iwabuchi
  • ,
  • T Kaneko
  • ,
  • M Kikuyama

46
11
開始ページ
1863
終了ページ
1871
記述言語
英語
掲載種別
DOI
10.1093/pcp/pci204
出版者・発行元
OXFORD UNIV PRESS

Characean internodal cells generate receptor potential in response to mechanical stimuli. We studied responses of internodal cells to a long-lasting stimulus and the results were as follows. (i) The cell generated receptor potential at the moment of both compression and decompression. (ii) The receptor potential (Delta E-m) was significantly larger at the moment of decompression than at compression. (iii) The longer the duration of the stimulus, the larger was the magnitude of Delta E-m at the moment of decompression. (iv) Aequorin studies revealed that the increase in [Ca2+](c) (Delta[Ca2+](c)) took place at the moment of both compression and decompression. (v) The amplitude of Delta[Ca2+](c) was larger at the moment of decompression than at compression, as was the case for Delta E (m). It was suggested that the amplitude of the receptor potential had a tight correlation with the degree of membrane deformation. We discussed the ionic mechanism of mechano-perception under a long-lasting stimulus in relation to mechanosensitive activation of Ca2+ channels at the plasma membrane.

Web of Science ® 被引用回数 : 9

リンク情報
DOI
https://doi.org/10.1093/pcp/pci204
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000233494300013&DestApp=WOS_CPL

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