Results 161 to 170 of about 3,323 (193)

Systemic role of melatonin in enhancing temperature stress tolerance in fenugreek: coordination of antioxidant defense, hormonal regulation, energy status, sulfur metabolism, and diosgenin pathway genes. [PDF]

BMC Plant Biol
Gharanjik S, Ebrahimi A, Somee LR, Chaghakaboodi Z, Alipour H.   +4 more
europepmc   +1 more source

Is monodehydroascorbate reductase activity in leaf tissue critical for the maintenance of yield in tomato? [PDF]

Journal of Plant Physiology, 2018
Ascorbate redox metabolism and growth have been shown to be linked and related to the activity of enzymes that produce or remove the radical monodehydroascorbate, the semi-oxidized form of ascorbate (ascorbate oxidase or peroxidase and monodehydroascorbate reductase respectively).
Vincent Truffault, Cecile Garchery, Hélène Gautier   +2 more
exaly   +6 more sources

Arabidopsis peroxisomes possess functionally redundant membrane and matrix isoforms of monodehydroascorbate reductase [PDF]

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’
Richard N Trelease
exaly   +4 more sources

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Reduction of Phenoxyl Radicals Mediated by Monodehydroascorbate Reductase

Biochemical and Biophysical Research Communications, 2000
Monodehydroascorbate (MDA) reductase catalyzes the reduction of MDA, the only organic radical substrate for the enzyme reported so far. Here, we show that cucumber MDA reductase is also capable of reducing phenoxyl radicals which are generated by horseradish peroxidase (HRP) with H2O2.
Jun’Ichi Mano, Satoshi Sano, Kozi Asada   +2 more
exaly   +3 more sources

Purification and cDNA Cloning of Chloroplastic Monodehydroascorbate Reductase from Spinach

Bioscience, Biotechnology and Biochemistry, 2005
The chloroplastic isoform of monodehydroascorbate (MDA) radical reductase was purified from spinach chloroplasts and leaves. The cDNA of chloroplastic MDA reductase was cloned, and its deduced amino acid sequence, consisting of 497 residues, showed high homology with those of putative organellar MDA reductases deduced from cDNAs of several plants.
Satoshi Sano, M Anwar Hossain, Chikahiro Miyake   +2 more
exaly   +3 more sources

Crystallization and preliminary crystallographic analysis of monodehydroascorbate radical reductase from cucumber

Acta Crystallographica Section D: Biological Crystallography, 2004
Monodehydroascorbate (MDA) radical reductase (EC 1.6.5.4) is an FAD enzyme that catalyzes the univalent reduction of MDA radical to ascorbate using NAD(P)H as an electron donor. The recombinant MDA reductase from cucumber was crystallized using polyethylene glycol 6000 as a precipitant.
Satoshi Sano, Hye-Jin Yoon, Kozi Asada   +2 more
exaly   +3 more sources

Characterization and analysis of the promoter region of monodehydroascorbate reductase 4 (CpMDAR4) in papaya

Plant Reproduction, 2022
Differential spatial and temporal expression patterns due to regulatory cis-elements and two different isoforms are detected among CpMDAR4 alleles in papaya. The aim of this research was to study the effects of cis-element differences between the X, Y and Yh alleles on the expression of CpMDAR4, a potential candidate gene for sex differentiation in ...
Dessireé Zerpa-Catanho, Steven J. Clough, Ray Ming   +2 more
openaire   +2 more sources

Monodehydroascorbate reductase 2 and dehydroascorbate reductase 5 are crucial for a mutualistic interaction between Piriformospora indica and Arabidopsis

Journal of Plant Physiology, 2009
Ascorbate is a major antioxidant and radical scavenger in plants. Monodehydroascorbate reductase (MDAR) and dehydroascorbate reductase (DHAR) are two enzymes of the ascorbate-glutathione cycle that maintain ascorbate in its reduced state. MDAR2 (At3g09940) and DHAR5 (At1g19570) expression was upregulated in the roots and shoots of Arabidopsis seedlings
Jyothilakshmi Vadassery, Swati Tripathi, Ram Prasad   +2 more
exaly   +4 more sources

Ascorbic acid and photosynthesis I. “Monodehydroascorbic acid” reductase of chloroplasts

Biochimica et Biophysica Acta, 1958
An enzyme system catalyzing the oxidation of DPNH and TPNH in the presence of ascorbic acid and of an ascorbic acid-oxidizing agent such as Cu++ ions or ascorbic acid oxidase has been extracted from the acetone powder of whole, washed spinach chloroplasts This system is unable to reduce dehydroascorbic acid, and closely corresponds to the reduced ...
E, MARRE, O, ARRIGONI
openaire   +2 more sources

Molecular cloning of the monodehydroascorbate reductase gene from Brassica campestris and analysis of its mRNA level in response to oxidative stress

Biochimica Et Biophysica Acta - Bioenergetics, 2004
In a majority of living organisms, a fundamental protection mechanism from reactive oxygen species is by the ascorbate–glutathione cycle in which an important antioxidant, ascorbate (vitamin C), is utilized to convert harmful H2O2 to H2O ...
Ho-Sung Yoon, Hyoshin Lee
exaly   +2 more sources