Transcript levels of the nuclear-encoded respiratory genes in rice decrease by oxygen deprivation: evidence for involvement of calcium in expression of the alternative oxidase la gene

被引：49

作者：

Tsuji, H ^{[1
]}

Nakazono, M ^{[1
]}

Saisho, D ^{[1
]}

Tsutsumi, N ^{[1
]}

Hirai, A ^{[1
]}

机构：

[1] Univ Tokyo, Plant Mol Genet Lab, Grad Sch Agr & Life Sci, Bunkyo Ku, Tokyo 1138657, Japan

来源：

FEBS LETTERS | 2000年 / 471卷 / 2-3期

关键词：

oxygen deprivation; mitochondrion; respiratory gene; calcium; Oryza;

D O I：

10.1016/S0014-5793(00)01411-3

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

We investigated the effect of oxygen on the expressionse of respiratory genes encoded in the nuclear and mitochondrial genomes of rice (Oryza sativa L.). Hypoxic treatment decreased the transcript levels of nuclear-encoded, but not mitochondrial-encoded respiratory gents. The effects of ruthenium red (an inhibitor of Ca2+ fluxes from organelles) and/or CaCl2 on plants under hypoxic conditions suggested that Ca2+ is a physiological transducer of a low-oxygen signaling pathway for expression of the alternative oxidase 1a gene (AOX1a), but not for expressions of genes involved in the cytochrome respiratory pathway, in rice. (C) 2000 Federation of European Biochemical Societies.

引用

页码：201 / 204

页数：4

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