Over-Expression of Dehydroascorbate Reductase Improves Salt Tolerance, Environmental Adaptability and Productivity in Oryza sativa [PDF]
Antioxidants, 2022 Abiotic stress induces reactive oxygen species (ROS) generation in plants, and high ROS levels can cause partial or severe oxidative damage to cellular components that regulate the redox status.
Young-Saeng Kim +9 more
doaj +4 more sources
Arabidopsis thaliana dehydroascorbate reductase 2: Conformational flexibility during catalysis. [PDF]
Sci Rep, 2017 AbstractDehydroascorbate reductase (DHAR) catalyzes the glutathione (GSH)-dependent reduction of dehydroascorbate and plays a direct role in regenerating ascorbic acid, an essential plant antioxidant vital for defense against oxidative stress. DHAR enzymes bear close structural homology to the glutathione transferase (GST) superfamily of enzymes and ...
Bodra N +8 more
europepmc +8 more sources
Erratum: Arabidopsis thaliana dehydroascorbate reductase 2: Conformational flexibility during catalysis. [PDF]
Sci Rep, 2017 Scientific Reports 7: Article number: 42494; published online: 14 February 2017; updated: 24 August 2017. The original Supplementary Information file published with this Article was incorrect. The correct Supplementary Information now accompanies the Article.
Bodra N +8 more
europepmc +5 more sources
Dehydroascorbate and dehydroascorbate reductase are phantom indicators of oxidative stress in plants [PDF]
FEBS Letters, 1997 In many physiological studies dehydroascorbate (DHA) reductase is regarded as one of the chloroplast enzymes involved in the protection against oxidative stress. Here, evidence is presented that plant cells do not possess a specific DHA reductase. The DHA reductase activities measured in plant extracts are due to side reactions of proteins containing ...
Morell S. +3 more
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The presence of dehydroascorbate and dehydroascorbate reductase in plant tissues [PDF]
FEBS Letters, 1998 Ascorbate, an essential antioxidant in plant tissues, is oxidised to dehydroascorbate (DHA) via successive reversible single electron transfers with monodehydroascorbate (MDHA) as a free radical intermediate. Rapid regeneration of ascorbate from its oxidised forms is required to support antioxidant capacity.
Foyer, Christine H, Mullineaux, Philip M
openaire +4 more sources
Dehydroascorbate Reductase Affects Leaf Growth, Development, and Function [PDF]
Plant Physiology, 2006 Abstract Ascorbic acid (Asc) is a major antioxidant in plants that detoxifies reactive oxygen species (ROS) and maintains photosynthetic function. Expression of dehydroascorbate reductase (DHAR), responsible for regenerating Asc from an oxidized state, regulates the cellular Asc redox state, which in turn affects cell responsiveness and ...
Zhong, Chen, Daniel R, Gallie
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New role for thioredoxins in plants: Implication of TRXo1 in protein depersulfidation [PDF]
Redox BiologyPersulfidation, a posttranslational modification of cysteines to persulfides, is the best characterized molecular mechanism of H2S signaling. This study is focused on new functions for thioredoxins (TRXs) in plants beyond those of thiol disulfide (S–S ...
Sabrina De Brasi-Velasco +5 more
doaj +2 more sources
Effects of High Lithium Concentrations on the Growth, Biomass, Mineral Accumulation, Oxidative Stress, Antioxidant and Gene Expression Response, and DNA Methylation in Sunflower Plants [PDF]
PlantsThis study demonstrates that sunflower plants display integrated, multilevel responses to excessive lithium (Li) exposure. Li concentrations above 5 mM markedly impair germination, growth, and biomass accumulation. Li is preferentially accumulated in the
Francisco Espinosa +5 more
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High Throughput Analyses of Ascorbate-turnover Enzyme Activities in Rice (Oryza sativa L.) Seedlings
Bio-Protocol, 2021 Ascorbate (Vitamin C) fulfills various functions in plant photosynthesis and abiotic stress tolerance. The four key enzymes involved in the ascorbate-turnover pathway are ascorbate peroxidase, ascorbate oxidase, monodehydroascorbate reductase, and ...
Lin Wu +4 more
doaj +1 more source
Plants, 2021 Boron (B) performs physiological functions in higher plants as an essential micronutrient, but its protective role in salt stress is poorly understood. Soybean (Glycine max L.) is planted widely throughout the world, and salinity has adverse effects on ...
Hesham F. Alharby +4 more
doaj +1 more source