Molecular evolution and interaction of ROS with ion transport for plant abiotic stresses
Hanxia Yu , Haoyan Xiao , Salah Fatouh Abou-Elwafa , Yabei Qiao , Lily Chen , Mohammed Ali Alshehri , Yusen Wu , Wei Jiang , Wenbing Tan
New Plant Protection ›› 2024, Vol. 1 ›› Issue (2) : e22
Molecular evolution and interaction of ROS with ion transport for plant abiotic stresses
Reactive oxygen species (ROS) serve as crucial signaling molecules in plants, enabling rapid responses to environmental stresses such as abiotic factors. ROS production primarily stems from the activation of enzymes such as nicotinamide adenine dinucleotide phosphate (NADPH) oxidases and peroxidases, as well as disruptions in the respiratory and photosynthetic electron transport chains. This oxidative stress triggers signaling pathways that involve in calcium ion (Ca2+) influx across cell membranes, altering ionic conductance. ROS encompass hydroxyl radicals (OH·) and hydrogen peroxide (H2O2), which activate hyperpolarization-activated Ca2+ channels and influence ion transport dynamics. Our review focuses on the mechanisms driving ROS generation and ion transport during plant responses to abiotic stress. We explore the regulation, characteristics, and potential structures of ROS-activated ion channels in plants. Specifically, we examine the molecular responses and evolutionary adaptations of Shaker-type K+ channels (AKT/KAT/GORK/SKOR) under stress conditions. Comparative genetic analyses highlight the conservation of these channels and other ROS-regulated proteins (e.g., MDHAR, POX, and RBOH), suggesting their essential roles in plant to adapt to diverse stresses. This study underscores the significance of ROS-regulated proteins in plant stress responses, advocating for further research to elucidate their fundamental roles.
abiotic stress / comparative genomics / crosstalk / ion transport systems / plasma membrane / reactive oxygen species / stomata
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2024 The Author(s). New Plant Protection published by John Wiley & Sons Australia, Ltd on behalf of Institute of Plant Protection, Chinese Academy of Agricultural Sciences.
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