Chlorophyll Photobleaching in Pigment-Protein Complexes

Robert Carpentier, Roger M. Leblanc, Guy Bellemare

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Pigment photobleaching was performed in thylakoid membranes of Hordeum vulgare (wild type, mutant Chlorina f2. Norfluranzon treated seedlings) and in pigment-protein complexes (CP-I and LHCP) isolated from H. vulgare and Chlamydomonas reinhardtii. Multiphasic kinetics were obtained in all of the above cases. Energy transfer towards pigments absorbing at longer wavelength is postulated as a general protection mechanism against photobleaching. This mechanism explains a substantial bleaching of carotenoids and a faster bleaching of chlorophyll aggregates, absorbing at long wavelength. These conclusions were valid for isolated complexes as well as for thylakoid membranes, although membranes were less sensitive to light.

Original languageEnglish (US)
Pages (from-to)284-290
Number of pages7
JournalZeitschrift fur Naturforschung - Section C Journal of Biosciences
Volume41
Issue number3
DOIs
StatePublished - Mar 1 1986
Externally publishedYes

Keywords

  • Chlorophyll
  • Energy Transfer
  • Photobleaching
  • Pigment-Protein Complexes
  • Thylakoid Membranes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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