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Role of superoxide dismutases (SODs) in controlling oxidative stress in plants.
The finding that the upstream sequences of Mn and peroxisomal Cu/Zn SODs have three common elements suggests a common regulatory pathway, which is borne out in the research literature.
Reactive oxygen species and antioxidants: Relationships in green cells
Current data suggest that complex regulatory mechanisms function at both the gene and protein level to coordinate antioxidant responses and that a critical role is played by organellar localization and inter-compartment coordination.
Responses of Antioxidants to Paraquat in Pea Leaves (Relationships to Resistance)
- J. Donahue, C. Okpodu, C. Cramer, E. Grabau, R. Alscher
- Biology, MedicinePlant Physiology
- 1 January 1997
Developmentally controlled mechanisms determining basal antioxidant enzyme activities, and not inductive responses, appear to be critical factors mediating short-term oxidative stress resistance.
Biosynthesis and antioxidant function of glutathione in plants
- R. Alscher
- 1 November 1989
Le glutathion est synthetise aussi bien par les chloroplastes que par le cytosol. Avec l'ascorbate, il protege les macromolecules contre l'oxydation pouvant resulter de stress tels que les…
Metabolic bases for differences in sensitivity of two pea cultivars to sulfur dioxide.
One basis for the relative insensitivity of the apparent photosynthesis of the pea cultivar Progress to SO(2) is the enhanced response of glutathione reductase, superoxide dismutase activities, and glutathion content.
Purification of Multiple Forms of Glutathione Reductase from Pea (Pisum sativum L.) Seedlings and Enzyme Levels in Ozone-Fumigated Pea Leaves.
- N. Madamanchi, J. V. Anderson, R. Alscher, C. Cramer, J. L. Hess
- BiologyPlant Physiology
- 1 September 1992
Immunoblotting showed a greater level of glutathione reductase protein in extracts from ozone-fumigated plants compared with that in control plants at the time when the target concentration was first reached, approximately 40 min from the start of the fumigation, and 4 h on the first day of fumigate.
Response of photosynthesis and cellular antioxidants to ozone in populus leaves.
The elevated antioxidant levels were maintained 21 hours after ozone exposure while photosynthetic rates recovered to about 75% of that of controls while Electron transport and NADPH levels remained unaffected by the treatment.
Stress responses in plants: Adaptation and acclimation mechanisms.
Partial table of contents: Carbon Balance of Stressed Plants: A Conceptual Model for Integrating Research Results and Transport/Harvest Index.
Antioxidants in Higher Plants
The chemistry and protective potential of sulfhydryl and hydroxyl compounds are emphasized and how tools of molecular biology may further clarify antioxidant function and response to stress are discussed.
Differential response of Cu,Zn superoxide dismutases in two pea cultivars during a short-term exposure to sulfur dioxide
- N. Madamanchi, J. Donahue, C. Cramer, R. Alscher, K. Pedersen
- Environmental SciencePlant Molecular Biology
- 1 October 1994
It is shown here that both chloroplastic and cytoplastic Cu,Zn-SOD proteins increased in Progress on exposure to sulfur dioxide whereas both proteins decreased in Nugget, suggesting that a combination of translational and post-translational mechanisms may be involved in SO2-induced changes in cytosolic and plastidic Cu,SODs in pea.