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 language | English (US) |
|---|---|
| Pages (from-to) | 284-290 |
| Number of pages | 7 |
| Journal | Zeitschrift fur Naturforschung - Section C Journal of Biosciences |
| Volume | 41 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 1 1986 |
| Externally published | Yes |
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Keywords
- Chlorophyll
- Energy Transfer
- Photobleaching
- Pigment-Protein Complexes
- Thylakoid Membranes
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
Cite this
Chlorophyll Photobleaching in Pigment-Protein Complexes. / Carpentier, Robert; Leblanc, Roger; Bellemare, Guy.
In: Zeitschrift fur Naturforschung - Section C Journal of Biosciences, Vol. 41, No. 3, 01.03.1986, p. 284-290.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Chlorophyll Photobleaching in Pigment-Protein Complexes
AU - Carpentier, Robert
AU - Leblanc, Roger
AU - Bellemare, Guy
PY - 1986/3/1
Y1 - 1986/3/1
N2 - 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.
AB - 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.
KW - Chlorophyll
KW - Energy Transfer
KW - Photobleaching
KW - Pigment-Protein Complexes
KW - Thylakoid Membranes
UR - http://www.scopus.com/inward/record.url?scp=0000436715&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000436715&partnerID=8YFLogxK
U2 - 10.1515/znc-1986-0307
DO - 10.1515/znc-1986-0307
M3 - Article
AN - SCOPUS:0000436715
VL - 41
SP - 284
EP - 290
JO - Zeitschrift fur Naturforschung - Section C Journal of Biosciences
JF - Zeitschrift fur Naturforschung - Section C Journal of Biosciences
SN - 0939-5075
IS - 3
ER -