BACKGROUND: Photosystem II proteins of higher plant chloroplasts are prone to oxidative stress, and most prominently the reaction center-binding D1 protein is damaged under abiotic stress. The reactive oxygen species produced under these stress conditions have been suggested to be responsible for the protein injury. SCOPE OF REVIEW: Recently, it has been shown that the primary and secondary products of non-enzymatic and enzymatic lipid peroxidation have a capability to modify photosystem II proteins. Here, we give an overview showing how lipid peroxidation products formed under light stress and heat stress in the thylakoid membranes cause oxidative modification of proteins in higher plant photosystem II. MAJOR CONCLUSIONS: Damage to photosystem II proteins by lipid peroxidation products represents a new mechanism underlying photoinhibition and heat inactivation. GENERAL SIGNIFICANCE: Complete characterization of photosystem II protein damage is of crucial importance because avoidance of the damage makes plants to survive under various abiotic stresses. Further physiological significance of photosystem II protein oxidation by lipid peroxidation product should have a potential relevance to plant acclimation because the oxidized proteins might serve as signaling molecules.

Department of Biophysics Centre of the Region Haná for Biotechnological and Agricultural Research Faculty of Science Palacký University Šlechtitelů 27 783 71 Olomouc Czech Republic

Graduate School of Natural Science and Technology Okayama University Okayama 700 8530 Japan

Citace poskytuje Crossref.org

Application of ultra-weak photon emission imaging in plant stress assessment

Effects of abiotic stress on photosystem II proteins

Puncturing lipid membranes: onset of pore formation and the role of hydrogen bonding in the presence of flavonoids

Downregulated expression of TaDeg7 inhibits photosynthetic activity in bread wheat (Triticum aestivum L.)

Reactive oxygen species in photosystem II: relevance for oxidative signaling

Singlet oxygen imaging using fluorescent probe Singlet Oxygen Sensor Green in photosynthetic organisms

Formation of singlet oxygen by decomposition of protein hydroperoxide in photosystem II