The presence of dehydroascorbate and dehydroascorbate reductase in plant tissues
نویسندگان
چکیده
منابع مشابه
Dehydroascorbate reductase affects leaf growth, development, and function.
Ascorbic acid (Asc) is a major antioxidant in plants that detoxifies reactive oxygen species (ROS) and maintains photosynthetic function. Expression of dehydroascorbate reductase (DHAR), responsible for regenerating Asc from an oxidized state, regulates the cellular Asc redox state, which in turn affects cell responsiveness and tolerance to environmental ROS. Because of its role in Asc recyclin...
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This corrects the article DOI: 10.1038/srep42494.
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Abstract Dehydroascorbate reductase (DHAR) plays a critical role in the ascorbate-glutathione recycling reaction for most higher plants. To date, studies on DHAR in higher plants have focused largely on Arabidopsis and agricultural plants, and there is virtually no information on the molecular characteristics of DHAR in gymnosperms. The present study reports the cloning and characteristics of a...
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Dehydroascorbate reductase (DHAR), which reduces oxidized ascorbate, is important for maintaining an appropriate ascorbate redox state in plant cells. To date, genome-wide molecular characterization of DHARs has only been conducted in bryophytes (Physcomitrella patens) and eudicots (e.g. Arabidopsis thaliana). In this study, to gain a general understanding of the molecular properties and functi...
متن کامل11 / l / l NADH - dependent Dehydroascorbate in the Rabbit Lens Reductase
// / The present investigation demonstrates the existence of NADH-dependent dehydroascorbate (DHA) recluctase activity in the soluble fraction of the rabbit lens. This DHA reductase was specific for NADH, and its apparent Km values for DHA and NADH were 5.7 mM and 4.0 uM, respectively. In a gel filtration of the lens soluble fraction on a Sephadex G-75 superfine column, the NADH-dependent DHA r...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1998
ISSN: 0014-5793
DOI: 10.1016/s0014-5793(98)00281-6