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Title: Mutation of OsALDH7 causes a yellow-colored endosperm associated with accumulation of oryzamutaic acid A in rice .
Author: Shen Y Zhang Y Yang C Lan Y Liu L Liu S Chen Z Ren G Wan J
Journal: Planta Citation: V : 235 P : 433-41 Year: 2012 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub21960163 Accession (PMID): 21960163
Abstract: Aldehyde dehydrogenase proteins consist of a superfamily and the family 7 ( ALDH7 ) is a typical group with highly conserved proteins across species . It catalyzes oxidation of alpha-aminoadipic semialdehyde ( AASA ) in lysine degradation , participates in protection against hyperosmotic stress , and detoxifies aldehydes in human ; however , its function in plants has been much less documented . Here we reported a mutant with yellow-colored endosperm in rice , and showed that the yellow endosperm was caused by mutation of OsALDH7 . OsALDH7 is expressed in all it issues detected , with the highest level in mature seeds . We found that oryzamutaic acid A accumulated during late seed development and after a year-long storage in the colored endosperm , whereas it was undetectable in the wild type endosperm . Moreover , lysine degradation was enhanced in yeast over-expressing OsALDH7 and as a result , content of lysine , glutamate and saccharopine was changed , suggesting a role of OsALDH7 in lysine catabolism .
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[ Sen. 1, subscore: 1.00 ]: Aldehyde dehydrogenase proteins consist of a superfamily and the family 7 ( ALDH7 ) is a typical group with highly conserved proteins across species .
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