Mutation of OsALDH7 causes a yellow-colored endosperm associated with accumulation of oryzamutaic acid A in rice
文献类型: 外文期刊
第一作者: Shen, Yi
作者: Shen, Yi;Yang, Chao;Lan, Ying;Liu, Linglong;Liu, Shijia;Wan, Jianmin;Zhang, Yan;Chen, Zhijun;Ren, Guixin
作者机构:
关键词: Aldehyde dehydrogenase 7;Lysine catabolism;Oryzamutaic acid A;Rice (Oryza sativa L.);Yellow endosperm
期刊名称:PLANTA ( 影响因子:4.116; 五年影响因子:4.316 )
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收录情况: SCI
摘要: 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 α-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 tissues 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.
分类号: Q94
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