Hydrogen Sulfide (H2S) Mitigates Arsenic (As)-Induced Toxicity in Pea (Pisum sativum L.) Plants by Regulating Osmoregulation, Antioxidant Defense System, Ascorbate Glutathione Cycle and Glyoxalase System

2020 ◽  
Author(s):  
Abdulaziz Abdullah Alsahli ◽  
Javaid Akhter Bhat ◽  
Mohammed Nasser Alyemeni ◽  
Muhammad Ashraf ◽  
Parvaiz Ahmad
Keyword(s):  
Hydrogen Sulfide ◽  
Pisum Sativum ◽  
Antioxidant Defense ◽  
Antioxidant Defense System ◽  
Defense System ◽  
Glyoxalase System ◽  
Pisum Sativum L ◽  
Glutathione Cycle

scholarly journals Molecular Mechanism of Heavy Metal Toxicity and Tolerance in Plants: Central Role of Glutathione in Detoxification of Reactive Oxygen Species and Methylglyoxal and in Heavy Metal Chelation

2012 ◽  
Vol 2012 ◽  
pp. 1-37 ◽  
Author(s):  
Mohammad Anwar Hossain ◽  
Pukclai Piyatida ◽  
Jaime A. Teixeira da Silva ◽  
Masayuki Fujita
Keyword(s):  
Reactive Oxygen Species ◽  
Heavy Metal ◽  
Antioxidant Defense ◽  
Plant Cells ◽  
Reactive Oxygen ◽  
Antioxidant Defense System ◽  
Peroxidation Of Lipids ◽  
Oxygen Species ◽  
Defense System ◽  
Glyoxalase System

Heavy metal (HM) toxicity is one of the major abiotic stresses leading to hazardous effects in plants. A common consequence of HM toxicity is the excessive accumulation of reactive oxygen species (ROS) and methylglyoxal (MG), both of which can cause peroxidation of lipids, oxidation of protein, inactivation of enzymes, DNA damage and/or interact with other vital constituents of plant cells. Higher plants have evolved a sophisticated antioxidant defense system and a glyoxalase system to scavenge ROS and MG. In addition, HMs that enter the cell may be sequestered by amino acids, organic acids, glutathione (GSH), or by specific metal-binding ligands. Being a central molecule of both the antioxidant defense system and the glyoxalase system, GSH is involved in both direct and indirect control of ROS and MG and their reaction products in plant cells, thus protecting the plant from HM-induced oxidative damage. Recent plant molecular studies have shown that GSH by itself and its metabolizing enzymes—notably glutathione S-transferase, glutathione peroxidase, dehydroascorbate reductase, glutathione reductase, glyoxalase I and glyoxalase II—act additively and coordinately for efficient protection against ROS- and MG-induced damage in addition to detoxification, complexation, chelation and compartmentation of HMs. The aim of this review is to integrate a recent understanding of physiological and biochemical mechanisms of HM-induced plant stress response and tolerance based on the findings of current plant molecular biology research.

Hydrogen sulfide is a crucial element of the antioxidant defense system in Glycine max–Sinorhizobium fredii symbiotic root nodules

2020 ◽  
Vol 449 (1-2) ◽  
pp. 209-231 ◽  
Author(s):  
Hang Zou ◽  
Ni-Na Zhang ◽  
Xue-Yuan Lin ◽  
Wei-Qin Zhang ◽  
Jian-Hua Zhang ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Glycine Max ◽  
Antioxidant Defense ◽  
Root Nodules ◽  
Antioxidant Defense System ◽  
Defense System ◽  
Sinorhizobium Fredii ◽  
Crucial Element
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