Journal Article

Involvement of Membrane Potential in Alkaline Band Formation by Internodal Cells of <i>Chara corallina</i>

Teruo Shimmen and Akiko Wakabayashi

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 49, issue 10, pages 1614-1620
Published in print October 2008 | ISSN: 0032-0781
Published online September 2008 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcn136
Involvement of Membrane Potential in Alkaline Band Formation by Internodal Cells of Chara corallina

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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.

Keywords: Alkaline band; Chara; Depolarization; K+; Membrane potential; Photosynthesis

Journal Article.  4691 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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