title: Cellular redox regulation, signaling, and stress response in plants.
abstract: Cellular and organellar redox states, which are characterized by the balance between oxidant and antioxidant pool sizes, play signaling roles in the regulation of gene expression and protein function in a wide variety of plant physiological processes including stress acclimation. Reactive oxygen species (ROS) and ascorbic acid (AsA) are the most abundant oxidants and antioxidants, respectively, in plant cells; therefore, the metabolism of these redox compounds must be strictly and spatiotemporally controlled. In this review, we provided an overview of our previous studies as well as recent advances in (1) the molecular mechanisms and regulation of AsA biosynthesis, (2) the molecular and genetic properties of ascorbate peroxidases, and (3) stress acclimation via ROS-derived oxidative/redox signaling pathways, and discussed future perspectives in this field.
authors.affiliation: a Faculty of Agriculture, Department of Advanced Bioscience , Kinki University , Nara , Japan.
authors.forename: Shigeru
authors.initials: S
authors.lastname: Shigeoka
authors.forename: Takanori
authors.initials: T
authors.lastname: Maruta
mesh_terms: D000975:Antioxidants / Q000378:metabolism; D060387:Ascorbate Peroxidases / Q000235:genetics; D001205:Ascorbic Acid / Q000096:biosynthesis* / Q000235:genetics; D048708:Cell Growth Processes; D010084:Oxidation-Reduction; D018384:Oxidative Stress; D059828:Plant Cells / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D017382:Reactive Oxygen Species / Q000378:metabolism; D015398:Signal Transduction
chemical_list: D000975:Antioxidants; D017382:Reactive Oxygen Species; D060387:Ascorbate Peroxidases; D001205:Ascorbic Acid
keywords: ascorbate; plants; reactive oxygen species; redox; stress