Journal
FEBS LETTERS
Volume 586, Issue 8, Pages 1208-1213Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2012.03.013
Keywords
Oxidative stress; Reactive carbonyl; NADPH-dependent alkenal/one oxidoreductase; Arabidopsis
Funding
- Ministry of Education, Culture, Sports, Science and Technology [21658112, 23580456, 18570044]
- Grants-in-Aid for Scientific Research [18570044, 23580456, 21658112] Funding Source: KAKEN
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Lipid peroxide-derived reactive carbonyls (RCs) can cause serious damage to plant functions. A chloroplastic NADPH-dependent alkenal/one oxidoreductase (AOR) detoxifies RCs, but its physiological significance remains unknown. In this study, we investigated the biological impacts of AOR using an AOR-knock out Arabidopsis line (aor). Methyl viologen treatment, mainly to enhance photosystem (PS) I-originated reactive oxygen species (ROS) production, caused more severe damage to aor than wild type (Col-0). In contrast, the high light treatment used to enhance PSII-originated ROS production resulted in no difference in PSII damage between Col-0 and aor. In conclusion, AOR can contribute to detoxify stromal RCs produced under oxidative stress. (C) 2012 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.
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