| | 1 | Author
| Robert Carpentier, RogerM. Leblanc, Guy Bellemare | Requires cookie* | | | Title
| Chlorophyll Photobleaching in Pigment-Protein Complexes  | | | | 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. In tro d u ctio n | | | |
Reference
| Z. Naturforsch. 41c, 284 (1986); received September 23 1985 | | | |
Published
| 1986 | | | |
Keywords
| Pigment-Protein Complexes, Photobleaching, Thylakoid Membranes Energy Transfer, Chlorophyll | | | |
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| | | | | TEI-XML for
| default:Reihe_C/41/ZNC-1986-41c-0284.pdf | | | | Identifier
| ZNC-1986-41c-0284 | | | | Volume
| 41 | |
| 2 | Author
| S. S. Brody, D. Simpson, M. Rieh | Requires cookie* | | | Title
| Distribution of cis-iraws-ß-Carotene in Pigment-Protein Fractions of Photosystem I and II | | | | Abstract
| The distribution of isomers of ß-carotene is reported in the CP-47 pigment-protein complex of photosystem II and photosystem I (PS I) from barley. The distribution of carotenoids from light harvester complex II is reported. CP-47 lacks 9,9'-rá-carotene, but contains 9,13'-c/s-carotene; PS I lacks 9,\2>'-cis but contains 9,9'-eis. More 9-eis, 9,13-cw, 9,15-c/s, and epoxide is observed in CP-47 than in PS I. | | | |
Reference
| Z. Naturforsch. 43c, 577—580 (1988); received March 15 1988 | | | |
Published
| 1988 | | | |
Keywords
| Photosynthesis, Carotene, High Performance Liquid Chromatography, Photosystems, Pigment-Protein Complex | | | |
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| default:Reihe_C/43/ZNC-1988-43c-0577.pdf | | | | Identifier
| ZNC-1988-43c-0577 | | | | Volume
| 43 | |
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