title: What is the role of hydrogen peroxide in plant peroxisomes?
abstract: Plant peroxisomes are unusual subcellular compartments with an apparent simple morphology but with complex metabolic activity. The presence of signal molecules, such as hydrogen peroxide (H(2)O(2)) and nitric oxide inside plant peroxisomes have added new functions in the cross-talk events among organelles and cells under physiological and stress conditions. Moreover, recent advances in proteomic analyses of plant peroxisomes have identified new protein candidates involved in several novel metabolic pathways. With all these new data, the present concise manuscript will focus on the relevance of the peroxisomal H(2)O(2) and its two main antioxidant enzymes, catalase and membrane-bound ascorbate peroxidase, which regulate its level and consequently its potential functions.
authors.affiliation: Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Department of Biochemistry, Cell and Molecular Biology of Plants, Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain.
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Corpas
mesh_terms: D000975:Antioxidants / Q000378:metabolism*; D060387:Ascorbate Peroxidases / Q000378:metabolism*; D002374:Catalase / Q000378:metabolism*; D006861:Hydrogen Peroxide / Q000378:metabolism*; D020675:Peroxisomes / Q000378:metabolism*; D010944:Plants / Q000378:metabolism*
chemical_list: D000975:Antioxidants; D006861:Hydrogen Peroxide; D060387:Ascorbate Peroxidases; D002374:Catalase
keywords: Ascorbate peroxidase; catalase; hydrogen peroxide; nitric oxide; oxidative stress; peroxisome; signalling