Ascorbate metabolism in vegetative and reproductive organs of "cherry" tomato
Ascorbate metabolism is an essential procedure for all plant cells that plays important roles in several physiological processes such as plant development and reactive oxygen species detoxification.
G. Tsaniklidis +3 more
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Overexpression of Mn-superoxide dismutase in maize leaves leads to increased monodehydroascorbate reductase, dehydroascorbate reductase and glutathione reductase activities [PDF]
The effect of increased Mn-superoxide dismutase (SOD) on antioxidant enzymes and metabolites was studied using transformed maize, TG1+ and TG2+. The progeny of the backcross of each of the primary transformants with the parental line generated two populations denoted M6884 and M6885.
A H, Kingston-Smith, C H, Foyer
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Interaction of triacontanol and arsenic on the ascorbate-glutathione cycle and their effects on the ultrastructure in Coriandrum sativum L. [PDF]
Exogenous application of triacontanol (TRIA) has the ability to mitigate the adverse effects of abiotic stresses by modulating a number of physio-biochemical processes in different plants.
BASILE, ADRIANA +6 more
core +1 more source
In chloroplasts and mitochondria, antioxidant mechanisms include the ascorbate-glutathione cycle, and monodehydroascorbate reductase (MDHAR) is important for regeneration of ascorbate (AsA) from monodehydroascorbate (MDHA).
S. Y. Shin +5 more
doaj +1 more source
A Direct Demonstration of the Catalytic Action of Monodehydroascorbate Reductase by Pulse Radiolysis [PDF]
To elucidate the catalytic mechanism of monodehydroascorbate (MDA) reductase from cucumber, its interaction with MDA radical was investigated by the use of pulse radiolysis. When approximately equimolar MDA radical to the fully reduced MDA reductase was generated, the fully reduced enzyme reacted first with MDA radical to form the red semiquinone, and ...
K, Kobayashi +3 more
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This study investigated the role of the protein kinase MEK1/2 in the regulation of ascorbate and glutathione metabolism by nitric oxide in Agropyron cristatum leaves.
C. Shan, N. Dong
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Two seed lots of Acer saccharinum (recalcitrant), with an initial moisture content of 50% and 55%, were stored at +3oC for 6 months. After this time, their viability (measured as germinability) reached 100% and 30%, respectively.
Ewelina Ratajczak, Stanisława Pukacka
doaj +1 more source
Existing antioxidant levels are more important in acclimation to supplemental UV-B irradiation than inducible ones: Studies with high light pretreated tobacco leaves [PDF]
Greenhouse grown tobacco plants were exposed to supplemental ultraviolet irradiation (280-400 nm, UV-B centered) for 6 days and changes in their photosynthesis (gas exchange and electron transport) and general and specific antioxidant activities were ...
Hideg, Éva, Majer, Petra
core +1 more source
Molecular Characterization of Monodehydroascorbate Radical Reductase from Cucumber Highly Expressed in Escherichia coli [PDF]
Monodehydroascorbate radical (MDA) reductase, an FAD-enzyme, is the first enzyme to be identified whose substrate is an organic radical and catalyzes the reduction of MDA to ascorbate by NAD(P)H. Its cDNA has been cloned from cucumber seedlings (Sano, S., and Asada, K. (1994) Plant Cell Physiol.
S, Sano, C, Miyake, B, Mikami, K, Asada
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Treatment with 0.5 mM salicylic acid (SA) significantly alleviated growth inhibition induced by drought in wheat seedlings, manifested by less decreassed fresh mass, dry mass, plant height, root length, and less increased lipid peroxidation.
G. Z. Kang +7 more
doaj +1 more source

