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The present edited book is an attempt to update the state of art of the knowledge on metabolism of ROS and antioxidants and their relationship in plant adaptation to abiotic stresses involving physiological, biochemical and molecular processes. The chapters are much focused on the current climate issues and how ROS metabolism can manipulate with antioxidant system to accelerate detoxification mechanism. It will enhance the mechanistic understanding on ROS and antioxidants system and will pave the path for agricultural scientists in developing tolerant crops to achieve sustainability under the changing environmental conditions. The increase in abiotic stress factors has become a major threat to sustainability of crop production. This situation has led to think ways which can help to come out with potential measures; for which it is necessary to understand the influence of abiotic stress factors on crops performance and the mechanisms by which these factors impact plants. It has now become evident that abiotic stress impacts negatively on plant growth and development at every stage of plant’s life. Plants adapt to the changing environment with the adjustment at physiological, biochemical and molecular levels. The possible mechanisms involved in the negative effects of abiotic stress factors are excess production of reactive oxygen species (ROS). They alter physiological and molecular mechanisms leading to poor performance of plants. Plants however, are able to cope with these adverse effects by inducing antioxidant systems as the priority. Nevertheless, the dual role of ROS has now been ascertained which provides an evidence for regulation of plant metabolism positively on a concentration-dependent manner. Under conditions of high ROS production, the antioxidant system plays a major role in diminishing the effects of ROS. Thus, ROS production and antioxidant system are interwoven with abiotic stress conditions. The antioxidants have the capacity to hold the stability in metabolism in order to avoid disruption due to environmental disturbances.

Plants --- Active oxygen. --- Effect of stress on --- Molecular aspects. --- Oxygen radicals --- Reactive oxygen --- Singlet oxygen --- Superperoxide anion --- Life sciences. --- Plant biochemistry. --- Oxidative stress. --- Plant ecology. --- Plant physiology. --- Life Sciences. --- Plant Physiology. --- Plant Ecology. --- Oxidative Stress. --- Plant Biochemistry. --- Plant Systematics/Taxonomy/Biogeography. --- Free radicals (Chemistry) --- Ionization of gases --- Oxygen --- Plant molecular biology --- Cytology. --- Biochemistry. --- Biological chemistry --- Chemical composition of organisms --- Organisms --- Physiological chemistry --- Biology --- Chemistry --- Medical sciences --- Cell biology --- Cellular biology --- Cells --- Cytologists --- Botany --- Ecology --- Physiology --- Composition --- Phytoecology --- Vegetation ecology --- Plant systematics. --- Plant taxonomy. --- Botanical classification --- Botanical systematics --- Botanical taxonomy --- Classification --- Plant biosystematics --- Plant classification --- Plant systematics --- Plant taxonomy --- Systematic botany --- Systematics (Botany) --- Taxonomy, Plant --- Plant taxonomists --- Phytochemistry --- Plant biochemistry --- Plant chemistry --- Biochemistry --- Phytochemicals --- Plant biochemical genetics --- Oxidation-reduction reaction --- Stress (Physiology) --- Floristic ecology

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Agriculture. --- Growth regulators. --- Growth regulating substances --- Farming --- Husbandry --- Industrial arts --- Life sciences --- Food supply --- Land use, Rural --- Plant hormones. --- Crop improvement.

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