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膜电位在珊瑚轮藻节间细胞碱性带形成中的作用。

Involvement of membrane potential in alkaline band formation by internodal cells of Chara corallina.

作者信息

Shimmen Teruo, Wakabayashi Akiko

机构信息

Department of Life Science, Graduate School of Life Science, University of Hyogo, Harima Science Park City, Hyogo, 678-1297 Japan.

出版信息

Plant Cell Physiol. 2008 Oct;49(10):1614-20. doi: 10.1093/pcp/pcn136. Epub 2008 Sep 9.

DOI:10.1093/pcp/pcn136
PMID:18782847
Abstract

Internodal cells of Chara corallina form alkaline bands on their surface upon illumination via photosynthesis. In the present study, the effect of KCl on alkaline band formation was analyzed. When the extracellular KCl concentration was increased, alkaline band formation was extensively inhibited. Electrophysiological analysis unequivocally showed the need for inner negative membrane potential for alkaline band formation.

摘要

珊瑚轮藻的节间细胞在光合作用光照下其表面会形成碱性带。在本研究中，分析了氯化钾对碱性带形成的影响。当细胞外氯化钾浓度增加时，碱性带的形成受到广泛抑制。电生理分析明确表明碱性带形成需要内膜负电位。

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