Peroxide processing in photosynthesis: antioxidant coupling and redox signalling
- 29 October 2000
- journal article
- research article
- Published by The Royal Society in Philosophical Transactions Of The Royal Society B-Biological Sciences
- Vol. 355 (1402) , 1465-1475
- https://doi.org/10.1098/rstb.2000.0707
Abstract
Photosynthesis has a high capacity for production of hydrogen peroxide (H2O2), but the intracellular levels of this relatively weak oxidant are controlled by the antioxidant system, comprising a network of enzymatic and non-enzymatic components that notably includes reactions linked to the intracellular ascorbate and glutathione pools. Mutants and transformed plants with specific decreases in key components offer the opportunity to dissect the complex system that maintains redox homeostasis. Since H2O2 is a signal-transducing molecule relaying information on intracellular redox state, the pool size must be rigorously controlled within each compartment of the cell. This review focuses on compartment-specific differences in the stringency of redox coupling between ascorbate and glutathione, and the significance this may have for the flexibility of the control of gene expression that is linked to photosynthetic H2O2 production.Keywords
This publication has 66 references indexed in Scilit:
- Bundle sheath proteins are more sensitive to oxidative damage than those of the mesophyll in maize leaves exposed to paraquat or low temperaturesJournal of Experimental Botany, 2000
- Response of antioxidant enzymes to transfer from elevated carbon dioxide to air and ozone fumigation, in the leaves and roots of wild‐type and a catalase‐deficient mutant of barleyPhysiologia Plantarum, 1998
- ASCORBATE AND GLUTATHIONE: Keeping Active Oxygen Under ControlAnnual Review of Plant Biology, 1998
- L-Ascorbic Acid Metabolism in the Ascorbate-Deficient Arabidopsis Mutant vtc1Plant Physiology, 1997
- Hydrogen peroxide- and glutathione-associated mechanisms of acclimatory stress tolerance and signallingPhysiologia Plantarum, 1997
- p53 gene mutation analysis in porokeratosis and porokeratosis-associated squamous cell carcinomaJournal of Dermatological Science, 1997
- H2O2 from the oxidative burst orchestrates the plant hypersensitive disease resistance responseCell, 1994
- A novel dehydroascorbate reductase from spinach chloroplasts homologous to plant trypsin inhibitorFEBS Letters, 1994
- Unequivocal evidence in support of the nonenzymatic redox coupling between glutathione/glutathione disulfide and ascorbic acid/dehydroascorbic acidBiochimica et Biophysica Acta (BBA) - General Subjects, 1992
- C4 plants as valuable model experimental systems for the study of photosynthesisNew Phytologist, 1988