Singlet oxygen production in photosynthesis
- PMID: 15310815
- DOI: 10.1093/jxb/erh237
Singlet oxygen production in photosynthesis
Abstract
A photosynthetic organism is subjected to photo-oxidative stress when more light energy is absorbed than is used in photosynthesis. In the light, highly reactive singlet oxygen can be produced via triplet chlorophyll formation in the reaction centre of photosystem II and in the antenna system. In the antenna, triplet chlorophyll is produced directly by excited singlet chlorophyll, while in the reaction centre it is formed via charge recombination of the light-induced charge pair. Changes of the mid-point potential of the primary quinone acceptor in photosystem II modulate the pathway of charge recombination in photosystem II and influence the yield of singlet oxygen production. Singlet oxygen can be quenched by beta-carotene, alpha-tocopherol or can react with the D1 protein of photosystem II as target. If not completely quenched, it can specifically trigger the up-regulation of the expression of genes which are involved in the molecular defence response of plants against photo-oxidative stress.
Similar articles
-
Tocopherol is the scavenger of singlet oxygen produced by the triplet states of chlorophyll in the PSII reaction centre.J Exp Bot. 2006;57(8):1677-84. doi: 10.1093/jxb/erl002. Epub 2006 May 19. J Exp Bot. 2006. PMID: 16714305 Review.
-
Singlet oxygen production in photosystem II and related protection mechanism.Photosynth Res. 2008 Oct-Dec;98(1-3):551-64. doi: 10.1007/s11120-008-9349-3. Epub 2008 Sep 9. Photosynth Res. 2008. PMID: 18780159 Review.
-
Molecular mechanisms of light stress of photosynthesis.Ann N Y Acad Sci. 2007 Oct;1113:114-22. doi: 10.1196/annals.1391.017. Epub 2007 May 18. Ann N Y Acad Sci. 2007. PMID: 17513459 Review.
-
Role of charge recombination processes in photodamage and photoprotection of the photosystem II complex.Physiol Plant. 2011 May;142(1):6-16. doi: 10.1111/j.1399-3054.2011.01454.x. Epub 2011 Mar 3. Physiol Plant. 2011. PMID: 21288250 Review.
-
Janus-faced charge recombinations in photosystem II photoinhibition.Trends Plant Sci. 2009 Apr;14(4):200-5. doi: 10.1016/j.tplants.2009.01.009. Epub 2009 Mar 18. Trends Plant Sci. 2009. PMID: 19303349
Cited by
-
Adaptive photoluminescence through a bioinspired antioxidative mechanism.Chem Sci. 2024 Oct 9;15(45):18881-7. doi: 10.1039/d4sc06096b. Online ahead of print. Chem Sci. 2024. PMID: 39479160 Free PMC article.
-
sll1019 and slr1259 encoding glyoxalase II improve tolerance of Synechocystis sp. PCC 6803 to methylglyoxal- and ethanol- induced oxidative stress by glyoxalase pathway.Appl Environ Microbiol. 2024 Nov 20;90(11):e0056424. doi: 10.1128/aem.00564-24. Epub 2024 Oct 21. Appl Environ Microbiol. 2024. PMID: 39431850
-
Covalently Anchored Molecular Catalyst onto a Graphitic Carbon Nitride Surface for Photocatalytic Epoxidation of Olefins.ACS Catal. 2024 Sep 18;14(19):14639-14651. doi: 10.1021/acscatal.4c04187. eCollection 2024 Oct 4. ACS Catal. 2024. PMID: 39386921 Free PMC article.
-
Triethylammonium Salts of Dicoumarol: Synthesis, Characterization, Human Antiglioblastoma, Antimicrobial and Antioxidant Studies.Cell Biochem Biophys. 2024 Sep 22. doi: 10.1007/s12013-024-01532-1. Online ahead of print. Cell Biochem Biophys. 2024. PMID: 39306823
-
Plant competition cues activate a singlet oxygen signaling pathway in Arabidopsis thaliana.Front Plant Sci. 2024 Aug 20;15:964476. doi: 10.3389/fpls.2024.964476. eCollection 2024. Front Plant Sci. 2024. PMID: 39228834 Free PMC article.
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Other Literature Sources
