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On the Origin and Fate of Reactive Oxygen Species in Plant Cell Compartments

Department of Biochemistry, Palacký University in Olomouc, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
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Antioxidants 2019, 8(4), 105; https://doi.org/10.3390/antiox8040105
Received: 4 March 2019 / Revised: 31 March 2019 / Accepted: 13 April 2019 / Published: 17 April 2019
(This article belongs to the Special Issue Oxidative Stress in Plant)
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Abstract

Reactive oxygen species (ROS) have been recognized as important signaling compounds of major importance in a number of developmental and physiological processes in plants. The existence of cellular compartments enables efficient redox compartmentalization and ensures proper functioning of ROS-dependent signaling pathways. Similar to other organisms, the production of individual ROS in plant cells is highly localized and regulated by compartment-specific enzyme pathways on transcriptional and post-translational level. ROS metabolism and signaling in specific compartments are greatly affected by their chemical interactions with other reactive radical species, ROS scavengers and antioxidant enzymes. A dysregulation of the redox status, as a consequence of induced ROS generation or decreased capacity of their removal, occurs in plants exposed to diverse stress conditions. During stress condition, strong induction of ROS-generating systems or attenuated ROS scavenging can lead to oxidative or nitrosative stress conditions, associated with potential damaging modifications of cell biomolecules. Here, we present an overview of compartment-specific pathways of ROS production and degradation and mechanisms of ROS homeostasis control within plant cell compartments. View Full-Text
Keywords: cell wall; chloroplasts; cytoplasmic membrane; cytosol; glyoxysomes; mitochondria; peroxisomes; plant cell; reactive oxygen species cell wall; chloroplasts; cytoplasmic membrane; cytosol; glyoxysomes; mitochondria; peroxisomes; plant cell; reactive oxygen species
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Janků, M.; Luhová, L.; Petřivalský, M. On the Origin and Fate of Reactive Oxygen Species in Plant Cell Compartments. Antioxidants 2019, 8, 105.

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