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Strana 1 z 216 Výsledek
Crystallization and preliminary X-ray crystallographic studies of dehydroascorbate reductase (DHAR) from Oryza sativa L. japonica.
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Dehydroascorbate reductase from Oryza sativa L. japonica (OsDHAR), a key enzyme in the regeneration of vitamin C, maintains reduced pools of ascorbic acid to detoxify reactive oxygen species. In previous studies, the overexpression of OsDHAR in transgenic rice increased grain yield and biomass as
[Effect of free-air CO2 enrichment (FACE) on leaf nitrate reductase activity of Oryza sativa L. cultivar Wuxianjing 14].
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With the target CO2 concentration of FACE plots being 200 micromol x mol(-1) above that in ambient air, this paper studied the effect of free-air CO2 enrichment (FACE) on leaf nitrate reductase activity (NRA) of Oryza sativa L. cultivar Wuxianjing 14. The results showed that FACE obviously increased
Improved expression, purification and crystallization of a putative N-acetyl-gamma-glutamyl-phosphate reductase from rice (Oryza sativa).
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N-Acetyl-gamma-glutamyl-phosphate reductase (AGPR) catalyzes the third step in an eight-step arginine-biosynthetic pathway that starts with glutamate. This enzyme converts N-acetyl-gamma-glutamyl phosphate to N-acetylglutamate-gamma-semialdehyde by an NADPH-dependent reductive dephosphorylation.
Ontogenetic Variation of Nitrogenase, Nitrate Reductase, and Glutamine Synthetase Activities in Oryza sativa.
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The relationship between the rates of nitrogenase, nitrate reductase, and glutamine synthetase activities, and plant ontogeny in rice (Oryza sativa L.), cultivar ;M9', grown in salt marsh sediment with and without nitrate treatment was studied. In both treatments, nitrogenase activity measured as
Purification, characterization and preliminary X-ray crystallographic studies of monodehydroascorbate reductase from Oryza sativa L. japonica.
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Monodehydroascorbate reductase (MDHAR; EC 1.6.5.4) is a key enzyme in the reactive oxygen species (ROS) detoxification system of plants. The participation of MDHAR in ascorbate (AsA) recycling in the ascorbate-glutathione cycle is important in the acquired tolerance of crop plants to abiotic
Structural understanding of the recycling of oxidized ascorbate by dehydroascorbate reductase (OsDHAR) from Oryza sativa L. japonica.
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Dehydroascorbate reductase (DHAR) is a key enzyme involved in the recycling of ascorbate, which catalyses the glutathione (GSH)-dependent reduction of oxidized ascorbate (dehydroascorbate, DHA). As a result, DHAR regenerates a pool of reduced ascorbate and detoxifies reactive oxygen species (ROS).
Potential Application of the Oryza sativa Monodehydroascorbate Reductase Gene (OsMDHAR) to Improve the Stress Tolerance and Fermentative Capacity of Saccharomyces cerevisiae.
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Monodehydroascorbate reductase (MDHAR; EC 1.6.5.4) is an important enzyme for ascorbate recycling. To examine whether heterologous expression of MDHAR from Oryza sativa (OsMDHAR) can prevent the deleterious effects of unfavorable growth conditions, we constructed a transgenic yeast strain harboring
Promoter deletion analysis reveals root-specific expression of the alkenal reductase gene (OsAER1) in Oryza sativa.
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Root-specific promoters are useful in plant genetic engineering, primarily to improve water and nutrient absorption. The aim of this study was to clone and characterise the promoter of the Oryza sativa L. alkenal reductase (OsAER1) gene encoding 2-alkenal reductase, an NADPH-dependent
Gene cloning and expression of cytosolic glutathione reductase in rice (Oryza sativa L.).
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We have isolated a cDNA (RGRC2) encoding glutathione reductase (GR) from rice (Oryza sativa L.). The comparison of deduced amino acid sequences from RGRC2 and other plant GR cDNAs indicated that RGRC2 encodes a putative cytosolic isoform. The recombinant RGRC2 protein had enzymatic properties
Glutathione reductase from Oryza sativa increases acquired tolerance to abiotic stresses in a genetically modified Saccharomyces cerevisiae strain.
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Glutathione reductase (GR, E.C. 1.6.4.2) is an important enzyme that reduces glutathione disulfide (GSSG) to a sulfydryl form (GSH) in the presence of an NADPH-dependent system. This is a critical antioxidant mechanism. Owing to the significance of GR, this enzyme has been examined in a number of
Structure-function study of AKR4C14, an aldo-keto reductase from Thai jasmine rice (Oryza sativa L. ssp. indica cv. KDML105).
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Aldo-keto reductases (AKRs) are NADPH/NADP+-dependent oxidoreductase enzymes that metabolize an aldehyde/ketone to the corresponding alcohol. AKR4C14 from rice exhibits a much higher efficiency in metabolizing malondialdehyde (MDA) than do the Arabidopsis enzymes AKR4C8 and AKR4C9,
Nitrate reductase of rice (Oryza sativa L.) under foot-rot disease.
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Studies reported here reveal a low nitrate reductase activity in the shoots of MTU 9 rice plants while in roots high enzyme activity has been recorded.Under pathogenesis, a low nitrate reductase activity in the roots and a high enzyme activity in the shoots have been recorded in susceptible rice
Aldose reductase in rice (Oryza sativa L.): stress response and developmental specificity.
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Aldose reductase (AR) protein and enzyme (alditol: NAD (P)(+) 1-oxidoreductase, EC 1.1.1.21) activity have been identified in mature seeds of indica rice cultivars. The protein begins to accumulate 15 days after pollination, reaches a peak at seed maturity and disappears upon imbibition.
A Vacuolar Membrane Ferric-Chelate Reductase, OsFRO1, Alleviates Fe Toxicity in Rice (Oryza sativa L.).
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Ferric reductase oxidase (FRO), the enzyme that reduced ferric iron [Fe (III)] into ferrous iron [Fe (II)], is known to play important roles in Fe absorption and homeostasis in plants that utilize a strategy I mechanism to obtain iron. Rice can use both strategies I and II for Fe uptake
Homologous expression of cytosolic dehydroascorbate reductase increases grain yield and biomass under paddy field conditions in transgenic rice (Oryza sativa L. japonica).
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Dehydroascorbate reductase (DHAR, EC 1.8.5.1) maintains redox pools of ascorbate (AsA) by recycling oxidized AsA to reduced AsA. To investigate whether DHAR affects rice yield under normal environmental conditions, cDNA-encoding DHAR (OsDHAR1) was isolated from rice and used to develop
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