Chloroplastic NADPH‐dependent alkenal/one oxidoreductase contributes to the detoxification of reactive carbonyls produced under oxidative stress | Zendy

Yamauchi Yasuo | Zendy; Hasegawa Ayaka | Zendy; Mizutani Masaharu | Zendy; Sugimoto Yukihiro | Zendy

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Chloroplastic NADPH‐dependent alkenal/one oxidoreductase contributes to the detoxification of reactive carbonyls produced under oxidative stress

Author(s) -

Yamauchi Yasuo,

Hasegawa Ayaka,

Mizutani Masaharu,

Sugimoto Yukihiro

Publication year - 2012

Publication title -

febs letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.593

H-Index - 257

eISSN - 1873-3468

pISSN - 0014-5793

DOI - 10.1016/j.febslet.2012.03.013

Subject(s) - reactive oxygen species , oxidative stress , oxidoreductase , chemistry , nadph oxidase , biochemistry , oxidative phosphorylation , arabidopsis , enzyme , gene , mutant

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.

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