Journal Article

Two members of the <i>Arabidopsis</i> CLC (chloride channel) family, AtCLCe and AtCLCf, are associated with thylakoid and Golgi membranes, respectively

Anne Marmagne, Marion Vinauger-Douard, Dario Monachello, Andéol Falcon de Longevialle, Céline Charon, Michèle Allot, Fabrice Rappaport, Francis-André Wollman, Hélène Barbier-Brygoo and Geneviève Ephritikhine

in Journal of Experimental Botany

Published on behalf of Society for Experimental Biology

Volume 58, issue 12, pages 3385-3393
Published in print September 2007 | ISSN: 0022-0957
Published online September 2007 | e-ISSN: 1460-2431 | DOI: http://dx.doi.org/10.1093/jxb/erm187
Two members of the Arabidopsis CLC (chloride channel) family, AtCLCe and AtCLCf, are associated with thylakoid and Golgi membranes, respectively

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Though numerous pieces of evidence point to major physiological roles for anion channels in plants, progress in the understanding of their biological functions is limited by the small number of genes identified so far. Seven chloride channel (CLC) members could be identified in the Arabidopsis genome, amongst which AtCLCe and AtCLCf are both more closely related to bacterial CLCs than the other plant CLCs. It is shown here that AtCLCe is targeted to the thylakoid membranes in chloroplasts and, in agreement with this subcellular localization, that the clce mutants display a phenotype related to photosynthesis activity. The AtCLCf protein is localized in Golgi membranes and functionally complements the yeast gef1 mutant disrupted in the single CLC gene encoding a Golgi-associated protein.

Keywords: Arabidopsis; CLC chloride channels; Golgi membranes; thylakoids

Journal Article.  5037 words.  Illustrated.

Subjects: Plant Sciences and Forestry

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