Journal ArticleDOI
Superoxide anion and hydrogen peroxide metabolism in soybean embryonic axes during germination.
Reads0
Chats0
TLDR
Hydrogen peroxide metabolism in soybean embryonic axes during early inhibition appears to have the following main features: mitochondrial membranes are the most important source of cytosolic O2- and H2O2; and extracellular peroxidase located at the cell wall affords an enzymatic system able to use diffused H 2O2.About:
This article is published in Biochimica et Biophysica Acta.The article was published on 1991-07-08. It has received 168 citations till now. The article focuses on the topics: Superoxide dismutase & Peroxidase.read more
Citations
More filters
Journal ArticleDOI
PLANT MITOCHONDRIA AND OXIDATIVE STRESS: Electron Transport, NADPH Turnover, and Metabolism of Reactive Oxygen Species.
TL;DR: The alternative oxidase and possibly NDin(NADH) function to limit mitochondrial ROS production by keeping the ETC relatively oxidized, together with small antioxidants such as glutathione, that help remove ROS.
Journal ArticleDOI
Evidence for Chilling-Induced Oxidative Stress in Maize Seedlings and a Regulatory Role for Hydrogen Peroxide.
TL;DR: Investigation of the molecular, biochemical, and physiological responses to chilling in preemergent maize seedlings suggested that peroxide has dual effects at low temperatures, particularly during acclimation and chilling of nonacclimated seedlings.
Journal ArticleDOI
Active oxygen species and antioxidants in seed biology
TL;DR: Active oxygen species, which occurs during seed desiccation, germination and ageing, may lead to oxidative stress and cellular damage, resulting in seed deterioration, but cells are endowed with detoxifying enzymes and antioxidant compounds that scavenge AOS and participate in seed survival.
Journal ArticleDOI
Tansley Review No. 112
Christine H. Foyer,Graham Noctor +1 more
TL;DR: This review considers photosynthesis as a whole-cell process, in which O2 and AOS are involved in reactions at both photosystems, enzyme regulation in the chloroplast stroma, photorespiration, and mitochondrial electron transport in the light, and oxidants and antioxidants are discussed as metabolic indicators of redox status, acting as sensors and signal molecules leading to acclimatory responses.
Journal ArticleDOI
Release of Reactive Oxygen Intermediates (Superoxide Radicals, Hydrogen Peroxide, and Hydroxyl Radicals) and Peroxidase in Germinating Radish Seeds Controlled by Light, Gibberellin, and Abscisic Acid
TL;DR: The participation of superoxide radicals, hydrogen peroxide, and hydroxyl radicals in ROI metabolism was demonstrated with specific in vivo assays, suggesting ROI production by germinating seeds represents an active, developmentally controlled physiological function, presumably for protecting the emerging seedling against attack by pathogens.
References
More filters
Journal Article
Protein Measurement with the Folin Phenol Reagent
TL;DR: Procedures are described for measuring protein in solution or after precipitation with acids or other agents, and for the determination of as little as 0.2 gamma of protein.
Journal ArticleDOI
Hydroperoxide metabolism in mammalian organs.
Book
Physiology and Biochemistry of Seeds. in Relation to Germination
J. Derek Bewley,Michael Black +1 more
TL;DR: Physiology and biochemistry of seeds in relation to germination, Physiology andBiochemistry of seed germination and the role of environment in germination are discussed.
Book ChapterDOI
Determination of the production of superoxide radicals and hydrogen peroxide in mitochondria.
TL;DR: Mitochondrial O 2 - production is pH dependent and increases toward the alkaline region, and effective inhibitors of Mn-superoxide dismutase are not known, and matrical superoxide dismUTase is usually removed by the repetitive washing of submitochondrial particles obtained by sonication or by other means.
Journal ArticleDOI
A Direct Demonstration of the Catalytic Action of Superoxide Dismutase through the Use of Pulse Radiolysis
TL;DR: EDTA had no effect on the enzyme-catalyzed dismutation of superoxide radicals, but did eliminate catalysis by Cu++, and Boiling the enzyme or reversibly removing its copper prosthetic group caused loss of catalytic activity.