Oxygen toxicity and superoxide dismutase as an antioxidant in physiological stress

Monk, Lorna S.; Fagerstedt, Kurt; Crawford, R. M. M.

doi:10.1111/j.1399-3054.1989.tb06219.x

Cited by 201 publications

(45 citation statements)

References 21 publications

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“…In addition to proteolysis, ROS can damage lipids, terpenoids, carbohydrates, and nucleic acids (Monk et al 1989;Baier and Dietz 1998). The capacity to scavenge ROS and to reduce their damaging effects is important for stress-tolerance (Tsugane et al 1999).…”

Section: Detoxificationmentioning

confidence: 99%

Proteome analysis of leaves from the resurrection plant Boea hygrometrica in response to dehydration and rehydration

Jiang

Wang

Shāng

et al. 2006

Planta

104

103

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Resurrection plants differ from other species in their unique ability to survive desiccation. In order to understand the mechanisms of desiccation tolerance, proteome studies were carried out using leaves of the resurrection plant Boea hygrometrica to reveal proteins that were differentially expressed in response to changes in relative water content. This opportunity was afforded by the rare ability of excised B. hygrometrica leaves to survive and resume metabolism following desiccation in a manner similar to intact plants. From a total of 223 proteins that were reproducibly detected and analyzed, 35% showed increased abundance in dehydrated leaves, 5% were induced in rehydrated leaves and 60% showed decreased or unchanged abundance in dehydrated and rehydrated leaves. Since the induction kinetics fall into clearly defined patterns, we suggest that programmed regulation of protein expression triggered by changes of water status. Fourteen dehydration responsive proteins were analyzed by mass spectrometry. Eight proteins were classified as playing a role in reactive oxygen species scavenging, photosynthesis and energy metabolism. In agreement with these findings, glutathione content and polyphenol oxidase activity were found to increase upon dehydration and rapid recovery of photosynthesis was observed.

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Section: Detoxificationmentioning

confidence: 99%

Proteome analysis of leaves from the resurrection plant Boea hygrometrica in response to dehydration and rehydration

Jiang

Wang

Shāng

et al. 2006

Planta

104

103

View full text Add to dashboard Cite

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“…Increase in the activity of antioxidant enzymes in response to various environmental stresses has also been reported in various studies (Elstner 1986, Bowler et al 1992, Sairam and Srivastava 2001, Sairam et al 2000. In Iris pseudacorus a 14-fold increase in SOD was observed during a reoxygenation period (Monk et al 1989). Van Toai and Bolles (1991) demonstrated that high SOD activity may contribute to flooding tolerance by improving detoxification of superoxide upon re-admission of oxygen.…”

Section: Introductionmentioning

confidence: 97%

Waterlogging induced oxidative stress and antioxidant activity in pigeonpea genotypes

et al. 2009

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The objective of this study was to examine the role of antioxidant enzymes in waterlogging tolerance of pigeonpea (Cajanus cajan L. Halls) genotypes ICP 301 (tolerant) and Pusa 207 (susceptible). Waterlogging resulted in visible yellowing and senescence of leaves, decrease in leaf area, dry matter, relative water content and chlorophyll content in leaves, and membrane stability index in roots and leaves. The decline in all parameters was greater in Pusa 207 than ICP 301. Oxidative stress in the form of superoxide radical, hydrogen peroxide and thiobarbituric acid reactive substances (TBARS) contents initially decreased, however at 4 and 6 d of waterlogging it increased over control plants, probably due to activation of DPI-sensitive NADPH-oxidase. Antioxidant enzymes such as superoxide dismutase, ascorbate peroxidase, glutathione reductase and catalase also increased under waterlogging. The comparatively greater antioxidant enzyme activities resulting in less oxidative stress in ICP 301 could be one of the factor determining its higher tolerance to flooding as compared to Pusa 207. This study is the first to conclusively prove that waterlogging induced increase in ROS is via NADPH oxidase.

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“…Reactive oxygen species (ROS), such as hydrogen peroxide, superoxide anion, and hydroxyl radicals, damage cell membrane components, degrade polysaccharides, and denature enzymes (Halliwell et al 1988; Monk et al 1989). Plants have developed very efficient antioxidant systems to scavenge ROS to provide protection against oxidative stress (Allen 1995).…”

Section: Introductionmentioning

confidence: 99%

Production of mutants with high cold tolerance in spring canola (Brassica napus)

McClinchey

Kott

2007

Euphytica

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A major factor affecting spring canola (Brassica napus) production in Canada is killing frosts during seedling development in the spring and seed maturation in the fall. The objective of this study was to explore the possibility of producing spring canola lines with mutations that have altered biochemical pathways that increase cold tolerance. The approach was to generate UV point mutations in cultured microspores followed by chemical in vitro selection of individual mutant microspores or embryos resulting in measurable alterations to various biochemical pathways with ele-

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Oxygen toxicity and superoxide dismutase as an antioxidant in physiological stress

Cited by 201 publications

References 21 publications

Proteome analysis of leaves from the resurrection plant Boea hygrometrica in response to dehydration and rehydration

Proteome analysis of leaves from the resurrection plant Boea hygrometrica in response to dehydration and rehydration

Waterlogging induced oxidative stress and antioxidant activity in pigeonpea genotypes

Production of mutants with high cold tolerance in spring canola (Brassica napus)

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