Dehydroascorbate Reductase Affects Non-photochemical Quenching and Photosynthetic Performance
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چکیده
منابع مشابه
Non-Photochemical Quenching Capacity in Arabidopsis thaliana Affects Herbivore Behaviour
Under natural conditions, plants have to cope with numerous stresses, including light-stress and herbivory. This raises intriguing questions regarding possible trade-offs between stress defences and growth. As part of a program designed to address these questions we have compared herbivory defences and damage in wild type Arabidopsis thaliana and two "photoprotection genotypes", npq4 and oePsbS...
متن کاملDehydroascorbate 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 کاملFluorescence and photochemical quenching in photosynthetic reaction centers.
Photosynthetic bacteria contain bacteriochlorophyll (BChl) that absorbs light and delivers the resulting singlet excitation energy to photochemical reaction centers.' The reaction centers, which have been isolated in a form free of lightharvesting BChl,'-3 contain a photochemically specialized BChl which in Rhodopseudomonas spheroides is called P870 after its absorption maximum near 870 nm. Exc...
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The p-hydroxybenzoic acid (BA) is a widespread phenolic compound often cited as allelochemical [1], released into soil by root exudates of Avena fatua [2], leaf leachates, and decomposed plant tissues of Triticum aestivum L. [3]. Because of the herbicidal potential of BA on crops [4] and weed species [5], commercially available BA was tested on photosynthetic efficiency, yield and non-photochem...
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By combining a high frequency modulation system for measurement of fluorescence with a phosphoroscope type apparatus for measurement of luminescence, recordings of fluorescence and luminescence induction kinetics under identical conditions were obtained. Both measuring sys tems tolerated the application of saturating pulses of white light for rapid, transient elimination of photochemical quenc...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2008
ISSN: 0021-9258
DOI: 10.1074/jbc.m802601200