Dehydroascorbate and dehydroascorbate reductase are phantom indicators of oxidative stress in plants
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...
متن کاملMolecular Properties and Functional Divergence of the Dehydroascorbate Reductase Gene Family in Lower and Higher Plants
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 کاملArabidopsis thaliana dehydroascorbate reductase 2: Conformational flexibility during catalysis
This corrects the article DOI: 10.1038/srep42494.
متن کاملMolecular characterization of a dehydroascorbate reductase from Pinus bungeana.
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...
متن کاملScavenging reactive oxygen species by rice dehydroascorbate reductase alleviates oxidative stresses in Escherichia coli.
Maintaining redox balance is one of the crucial requirements for a cell to endure stress from the outside. Dehydroascorbate reductase (DHAR; EC 1.8.5.1) plays an important role in the ascorbate-glutathione cycle; one of the major ROS scavenging systems in most known biological systems. A cDNA clone of the DHAR gene from Oryza sativa (OsDHAR) was isolated and overexpressed in Escherichia coli BL...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1997
ISSN: 0014-5793
DOI: 10.1016/s0014-5793(97)01074-0