Arsenic-Induced Oxidative Stress and Antioxidant Defense in Plants

Stresses

Pedro García-Caparrós¹  Kamrun Nahar²  Mirza Hasanuzzaman³  Kirti Bardhan⁴  Deyvid Novaes Marques⁵  Khursheda Parvin⁶  Mohammad Saidur Rhaman⁷ 

[1] Agronomy Department of Superior School Engineering, University of Almería, Ctra. Sacramento s/n, 04120 Almería, Spain;Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh;Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh;Department of Basic Sciences and Humanities, Navsari Agricultural University, Navsari 396450, India;Department of Genetics, Luiz de Queiroz College of Agriculture (USP/ESALQ), University of São Paulo, Piracicaba 13418-900, São Paulo, Brazil;Department of Horticulture, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh;Department of Seed Science and Technology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh;

关键词: abiotic stress;    environmental pollution;    metalloids;    metal transporter;    xenobiotics;    reactive oxygen species;   

DOI  :  10.3390/stresses2020013

来源: DOAJ

【 摘 要 】

The non-essential metalloid arsenic (As) is widely distributed in soil and underground water of many countries. Arsenic contamination is a concern because it creates threat to food security in terms of crop productivity and food safety. Plants exposed to As show morpho-physiological, growth and developmental disorder which altogether result in loss of productivity. At physiological level, As-induced altered biochemistry in chloroplast, mitochondria, peroxisome, endoplasmic reticulum, cell wall, plasma membrane causes reactive oxygen species (ROS) overgeneration which damage cell through disintegrating the structure of lipids, proteins, and DNA. Therefore, plants tolerance to ROS-induced oxidative stress is a vital strategy for enhancing As tolerance in plants. Plants having enhanced antioxidant defense system show greater tolerance to As toxicity. Depending upon plant diversity (As hyperaccumulator/non-hyperaccumulator or As tolerant/susceptible) the mechanisms of As accumulation, absorption or toxicity response may differ. There can be various crop management practices such as exogenous application of nutrients, hormones, antioxidants, osmolytes, signaling molecules, different chelating agents, microbial inoculants, organic amendments etc. can be effective against As toxicity in plants. There is information gap in understanding the mechanism of As-induced response (damage or tolerance response) in plants. This review presents the mechanism of As uptake and accumulation in plants, physiological responses under As stress, As-induced ROS generation and antioxidant defense system response, various approaches for enhancing As tolerance in plants from the available literatures which will make understanding the to date knowledge, knowledge gap and future guideline to be worked out for the development of As tolerant plant cultivars.

【 授权许可】

Unknown