Distribution and Functions of Monodehydroascorbate Reductases in Plants: Comprehensive Reverse Genetic Analysis of Arabidopsis thaliana Enzymes [PDF]
Antioxidants, 2021 Monodehydroascorbate reductase (MDAR) is an enzyme involved in ascorbate recycling. Arabidopsis thaliana has five MDAR genes that encode two cytosolic, one cytosolic/peroxisomal, one peroxisomal membrane-attached, and one chloroplastic/mitochondrial ...
Mio Tanaka +7 more
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Oxidative stress induced expression of monodehydroascorbate reductase gene in Eleusine coracana. [PDF]
Physiol Mol Biol Plants, 2015 Abiotic stresses constitute a serious threats to the world food security as they cause significant economic losses in terms of reduction in crop productivity and also greatly limit the geographical locations where crops can be grown. Exposure to abiotic stress causes over-production of reactive oxygen species, leading to oxidative stress in plants ...
Sudan J, Negi B, Arora S, Arora S.
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Differential molecular response of monodehydroascorbate reductase and glutathione reductase by nitration and S-nitrosylation. [PDF]
J Exp Bot, 2015 The ascorbate-glutathione cycle is a metabolic pathway that detoxifies hydrogen peroxide and involves enzymatic and non-enzymatic antioxidants. Proteomic studies have shown that some enzymes in this cycle such as ascorbate peroxidase (APX), monodehydroascorbate reductase (MDAR), and glutathione reductase (GR) are potential targets for post ...
Begara-Morales JC +9 more
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Structure and catalytic mechanism of monodehydroascorbate reductase, MDHAR, from Oryza sativa L. japonica. [PDF]
Sci Rep, 2016 AbstractAscorbic acid (AsA) maintains redox homeostasis by scavenging reactive oxygen species from prokaryotes to eukaryotes, especially plants. The enzyme monodehydroascorbate reductase (MDHAR) regenerates AsA by catalysing the reduction of monodehydroascorbate, using NADH or NADPH as an electron donor.
Park AK +12 more
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The interplay between virus infection and water-related stress is mediated by the plant metabolism of ascorbic acid. [PDF]
New PhytolSummary Plants are often subjected to environmental variations in the context of infection such that virus‐induced and abiotic stresses co‐occur. One such environmental variation is water stress, which strongly impacts plant fitness. Although there is ample evidence of the beneficial effects of plant viruses under drought, the consequences of infection
Jaime C +4 more
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Redox Regulation of Monodehydroascorbate Reductase by Thioredoxin y in Plastids Revealed in the Context of Water Stress. [PDF]
Antioxidants (Basel), 2018 Thioredoxins (TRXs) are key players within the complex response network of plants to environmental constraints. Here, the physiological implication of the plastidial y-type TRXs in Arabidopsis drought tolerance was examined. We previously showed that TRXs y1 and y2 have antioxidant functions, and here, the corresponding single and double mutant plants ...
Vanacker H +3 more
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Monodehydroascorbate reductase mediates TNT toxicity in plants [PDF]
Science, 2015 Bioremediation from disabled self-destructionExplosives used in mining, construction, or military operations leave behind contaminated soils. Although bioremediation could help, plants do not thrive on these soils. Johnstonet al.have now found out why (see the Perspective by Noctor).
Johnston, Emily J. +5 more
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Arabidopsis peroxisomes possess functionally redundant membrane and matrix isoforms of monodehydroascorbate reductase [PDF]
The Plant Journal, 2005 SummaryThe H2O2 byproduct of fatty acid catabolism in plant peroxisomes is removed in part by a membrane‐associated antioxidant system that involves both an ascorbate peroxidase and a monodehydroascorbate reductase (MDAR). Despite descriptions of 32‐kDa MDAR polypeptides in pea and castor peroxisomal membranes and cDNA sequences for several ‘cytosolic’
Cayle S, Lisenbee +2 more
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Impact of cadmium and hydrogen peroxide on ascorbate-glutathione recycling enzymes in barley root
Plant, Soil and Environment, 2013 We analyse the effect of Cd and H2O2 short-term treatments on the activity of ascorbate-glutathione recycling enzymes in barley root tip. Even a short transient exposure of barley roots to low 15 µmol Cd concentration caused a marked approximately 70 ...
V. Zelinová +4 more
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Co-expression of monodehydroascorbate reductase and dehydroascorbate reductase from Brassica rapa effectively confers tolerance to freezing-induced oxidative stress. [PDF]
Mol Cells, 2013 Plants are exposed to various environmental stresses and have therefore developed antioxidant enzymes and molecules to protect their cellular components against toxicity derived from reactive oxygen species (ROS). Ascorbate is a very important antioxidant molecule in plants, and monodehydroascorbate reductase (MDHAR; EC 1.6.5.4) and dehydroascorbate ...
Shin SY +4 more
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