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

Abstract
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.
AuthorsHelen Collett, Rafal Butowt, James Smith, Jill Farrant, Nicola Illing
JournalJournal of experimental botany (J Exp Bot) Vol. 54 Issue 392 Pg. 2593-5 (Nov 2003) ISSN: 0022-0957 [Print] England
PMID12966044 (Publication Type: Journal Article, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • DNA Primers
  • Photosystem II Protein Complex
Topics
  • Acclimatization (genetics)
  • Amino Acid Sequence
  • Arabidopsis (genetics)
  • Base Sequence
  • Craterostigma (genetics, physiology)
  • DNA Primers
  • Desiccation
  • Gene Expression Regulation, Plant (genetics)
  • Molecular Sequence Data
  • Photosynthesis (genetics)
  • Photosystem II Protein Complex (genetics)
  • Polymerase Chain Reaction
  • Sequence Alignment
  • Sequence Homology, Amino Acid
  • Transcription, Genetic

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