Journal Article

Photosynthetic genes are differentially transcribed during the dehydration‐rehydration cycle in the resurrection plant, <i>Xerophyta humilis</i>

Helen Collett, Rafal Butowt, James Smith, Jill Farrant and Nicola Illing

in Journal of Experimental Botany

Published on behalf of Society for Experimental Biology

Volume 54, issue 392, pages 2593-2595
Published in print November 2003 | ISSN: 0022-0957
Published online November 2003 | e-ISSN: 1460-2431 | DOI: http://dx.doi.org/10.1093/jxb/erg285
Photosynthetic genes are differentially transcribed during the dehydration‐rehydration cycle in the resurrection plant, Xerophyta humilis

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One of the desiccation‐tolerant mechanisms of the resurrection plant, Xerophyta humilis, is the ability to shut down photosynthesis reversibly. The X. humilis psbR and ChlP genes, encoding the 10 kDa polypeptide of photosystem II (PSII) and a geranylgeranyl reducatase, respectively, were isolated in a differential display screen as dehydration‐down‐regulated and rehydration‐up‐regulated transcripts. Two other PSII genes, psbA (chloroplast‐encoded) and psbP (nuclear‐encoded), isolated by degenerate primer PCR, display a similar trend in expression.

Keywords: Key words: Dehydration–rehydration cycle, photosynthesis, photosystem II genes, resurrection plant, transcript.

Journal Article.  1240 words.  Illustrated.

Subjects: Plant Sciences and Forestry

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