articleFrontiers in Environmental ScienceDec 2, 2014GOLD OA

Reactive oxygen species (ROS) and response of antioxidants as ROS-scavengers during environmental stress in plants

KDKaushik DasARAryadeep Roychoudhury

St Xavier’s College

Indexed incrossrefdoaj

Abstract

Reactive oxygen species (ROS) were initially recognized as toxic by-products of aerobic metabolism. In recent years, it has become apparent that ROS plays an important signaling role in plants, controlling processes such as growth, development and especially response to biotic and abiotic environmental stimuli. The major members of the ROS family include free radicals like O - 2 , OH and non-radicals like H 2 O 2 and 1 O 2 . The ROS production in plants is mainly localized in the chloroplast, mitochondria and peroxisomes. There are secondary sites as well like the endoplasmic reticulum, cell membrane, cell wall and the apoplast. The role of the ROS family is that of a double edged sword; while they act as…

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Topics & keywords

Topics
Keywords
  • Reactive oxygen species
  • Glutathione reductase
  • Biochemistry
  • Superoxide dismutase
  • Ascorbic acid
  • Mitochondrial ROS
  • Chemistry
  • Antioxidant
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