Photosynthetic genes are differentially transcribed during the dehydration-rehydration cycle in the resurrection plant, Xerophyta humilis | Zendy

H. Collett | Zendy

Open Access

Photosynthetic genes are differentially transcribed during the dehydration-rehydration cycle in the resurrection plant, Xerophyta humilis

Author(s) -

H. Collett

Publication year - 2003

Publication title -

journal of experimental botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.616

H-Index - 242

eISSN - 1460-2431

pISSN - 0022-0957

DOI - 10.1093/jxb/erg285

Subject(s) - chloroplast , biology , photosynthesis , gene , dehydration , primer (cosmetics) , photosystem i , botany , desiccation , plastid , photosystem ii , biochemistry , chemistry , organic chemistry

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 reductase, 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.

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