Abstract Reduction-oxidation (redox) reactions, in which electrons move from a donor to an
acceptor, are the functional heart of photosynthesis. It is not surprising therefore that reactive …

The discovery that there is a close relationship between ascorbate and glutathione dates
from soon after the characterization of the chemical formulae of the two molecules (Szent …

Over-production of reactive oxygen species (ROS) in plants under stress conditions is a
common phenomenon. Plants tend to counter this problem through their ability to synthesize …

Ascorbic acid is synthesised by eukaryotes, the known exceptions being primates and some
other animal groups which have lost functional gulonolactone oxidase. Prokaryotes do not …

Reactive oxygen species (ROS) have multifaceted roles in the orchestration of plant gene
expression and gene-product regulation. Cellular redox homeostasis is considered to be an …

Lipid peroxidation is the process by which oxygen combines with lipids to generate lipid
hydroperoxides via intermediate formation of peroxyl radicals. Vitamin E and coenzyme Q …

Plants have developed a complex defense system against diverse pests and pathogens.
Once pathogens overcome mechanical barriers to infection, plant receptors initiate signaling …

Reactive oxygen species (ROS) play a dual role in plant biology acting on the one hand as
important signal transduction molecules and on the other as toxic by‐products of aerobic …

Paradoxically, death is an integral part of life. Cell death is essential for growth and
development of eukaryotes, by maintaining tissue and organ homeostasis in concert with …

Vitamin C (l-ascorbic acid) is an excellent free radical scavenger, not only for its capability to
donate reducing equivalents but also for the relative stability of the derived …