glutathione reductase/arabidopsis thaliana

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Glutathione Reductase Gene Expression Depends on Chloroplast Signals in Arabidopsis thaliana.

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Glutathione reductase (EC 1.6.4.2) is one of the main antioxidant enzymes of the plant cell. In Arabidopsis thaliana, glutathione reductase is encoded by two genes: the gr1 gene encodes the cytosolic-peroxisomal form, and the gr2 gene encodes the chloroplast-mitochondrial form. Little is known about

Differential accumulation of antioxidant mRNAs in Arabidopsis thaliana exposed to ozone.

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Antioxidant isoenzymes function to eliminate free radicals and are localized to several different subcellular compartments within the plant cell. In Arabidopsis thaliana exposed to ozone (O3), we have monitored the accumulation of mRNAs encoding both cytosolic and chloroplastic antioxidant

Molecular cloning and characterization of the glutathione reductase gene from Stipa purpurea.

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Reactive oxygen species (ROS) are a key factor in abiotic stresses; excess ROS is harmful to plants. Glutathione reductase (GR) plays an important role in scavenging ROS in plants. Here, a GR gene, named SpGR, was cloned from Stipa purpurea and characterized. The full-length open reading frame was

Molecular cloning and characterization of the gene encoding glutathione reductase in Brassica campestris.

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We have isolated the Brassica campestris cDNA encoding glutathione reductase of 502 amino acid residues with molecular mass of 54.5 kDa. The deduced amino acid sequences were 92.2%, and 79.5% identical to those of Arabidopsis thaliana, and pea, respectively. As expected, it exhibited a high degree

Cloning, sequencing, and regulation of the glutathione reductase gene from the cyanobacterium Anabaena PCC 7120.

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Glutathione reductase (GR) was purified from the cyanobacterium Anabaena PCC 7120. A 3-kilobase genomic DNA fragment containing the coding sequence for the GR gene (gor) was identified and cloned by polymerase chain reaction based on sequences of selected peptides isolated from proteolyzed GR. The

Changes in biosynthesis and metabolism of glutathione upon ochratoxin A stress in Arabidopsis thaliana.

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Ochratoxin A (OTA) is one of the most toxic mycotoxins, which is toxic to plants and simulates oxidative stress. Glutathione is an important antioxidant in plants and is closely associated with detoxification in cells. We have previously shown that OTA exposure induces obvious expression differences

Quantitative proteomics identifies oxidant-induced, AtMPK6-dependent changes in Arabidopsis thaliana protein profiles.

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In Arabidopsis thaliana, oxidant-induced signalling has been shown to utilize the mitogen-activated protein kinase (MAPK), AtMPK6. To identify proteins whose accumulation is altered by ozone in an AtMPK6-dependent manner we employed isotope-coded affinity tagging (ICAT) technology to investigate the

Effect of short-term salt stress on oxidative stress markers and antioxidant enzymes activity in tocopherol-deficient Arabidopsis thaliana plants.

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Changes of carotenoids and anthocyanins content, lipid peroxidation, and activity of antioxidant enzymes were studied in wild type and tocopherol-deficient lines vte1 and vte4 of Arabidopsis thaliana subjected to 200 mM NaCI during 24 h. The salt stress enhanced the intensity of lipid peroxidation

Assessment of silver nanoparticle-induced physiological and molecular changes in Arabidopsis thaliana.

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In this study, the effect of silver nanoparticles and silver ions on Arabidopsis thaliana was investigated at physiological and molecular levels. The seedlings were grown in sublethal concentrations of silver nanoparticles and silver ions (0.2, 0.5, and 1 mg/L) in 1/4 Hoagland's medium for 14 days

Induction of Oxidative Stress and Antioxidative Mechanisms in Arabidopsis thaliana after Uranium Exposure at pH 7.5.

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To evaluate the environmental impact of uranium (U) contamination, it is important to investigate the effects of U at ecologically relevant conditions. Since U speciation, and hence its toxicity, strongly depends on environmental pH, the present study aimed to investigate dose-dependent effects of U

A comprehensive study of thiol reduction gene expression under stress conditions in Arabidopsis thaliana.

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Thiol reduction proteins are key regulators of the redox state of the cell, managing development and stress response programs. In plants, thiol reduction proteins, namely thioredoxin (TRX), glutaredoxin (GRX), and their respective reducers glutathione reductase (GR) and thioredoxin reductase (TR),

Effects of pH on uranium uptake and oxidative stress responses induced in Arabidopsis thaliana.

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Uranium (U) causes oxidative stress in Arabidopsis thaliana plants grown at pH 5.5. However, U speciation and its toxicity strongly depend on environmental parameters, for example pH. It is unknown how different U species determine U uptake and translocation within plants and how they might affect

Effect of sodium nitroprusside and S-nitrosoglutathione on pigment content and antioxidant system of tocopherol-deficient plants of Arabidopsis thaliana.

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Sodium nitroprusside (SNP) and S-nitrosoglutathione (GSNO) were used as a source of exogenous nitric oxide (NO) to investigate their effects on biochemical parameters and antioxidant enzyme response in leaves of wild type Columbia and tocopherol-deficient vte4 and vte1 mutant lines of Arabidopsis

Effect of BSO-supplemented heavy metals on antioxidant enzymes in Arabidopsis thaliana.

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Activities of the ascorbate-glutathione cycle enzymes were investigated in leaves of Arabidopsis thaliana plants grown for 7 and 14 days in modified Hoagland nutrient solution containing Cd and Cu alone or supplemented with buthionine sulfoximine (BSO), an inhibitor of glutathione synthesis. In A.

Responses of antioxidant enzymes to cold and high light are not correlated to freezing tolerance in natural accessions of Arabidopsis thaliana.

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Low temperatures and high light cause imbalances in primary and secondary reactions of photosynthesis, and thus can result in oxidative stress. Plants employ a range of low-molecular weight antioxidants and antioxidant enzymes to prevent oxidative damage, and antioxidant defence is considered an

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