Induction of mitochondrial aldehyde dehydrogenase by submergence facilitates oxidation of acetaldehyde during re‐aeration in rice

FEBS Letters

Nakazono, Mikio²  Suzuki, Yasuhiro¹  Tsutsumi, Nobuhiro²  Meguro, Naoki²  Tsuji, Hiroyuki²  Hirai, Atsushi² 

[1]National Institute of Crop Science, 2-1-18 Kannondai, Tsukuba, Ibaraki 305-8518, Japan

[2]Laboratory of Plant Molecular Genetics, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan

关键词: Plant;    Aldehyde dehydrogenase;    Mitochondrion;    Submergence;    ALDH;    aldehyde dehydrogenase;    ADH;    alcohol dehydrogenase;    CAT;    catalase;    ROS;    reactive oxygen species;    GC-MS;    gas chromatography–mass spectrometry;   

DOI  :  10.1016/S0014-5793(03)00631-8

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Post-hypoxic injuries in plants are primarily caused by bursts of reactive oxygen species and acetaldehyde. In agreement with previous studies, we found accumulations of acetaldehyde in rice during re-aeration following submergence. During re-aeration, acetaldehyde-oxidizing aldehyde dehydrogenase (ALDH) activity increased, thereby causing the acetaldehyde content to decrease in rice. Interestingly, re-aerated rice plants showed an intense mitochondrial ALDH2a protein induction, even though ALDH2a mRNA was submergence induced and declined upon re-aeration. This suggests that rice ALDH2a mRNA is accumulated in order to quickly metabolize acetaldehyde that is produced upon re-aeration.

【 授权许可】

Unknown