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Induction of mitochondrial aldehyde dehydrogenase by submergence facilitates oxidation of acetaldehyde during re‐aeration in rice
Author(s) -
Tsuji Hiroyuki,
Meguro Naoki,
Suzuki Yasuhiro,
Tsutsumi Nobuhiro,
Hirai Atsushi,
Nakazono Mikio
Publication year - 2003
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/s0014-5793(03)00631-8
Subject(s) - acetaldehyde , aeration , aldehyde dehydrogenase , oxidizing agent , chemistry , aldehyde , biochemistry , dehydrogenase , enzyme , food science , biology , ethanol , organic chemistry , catalysis
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.