Phytochrome-mediated control of COP1 gene expression in rice plants

被引:23
作者
Tsuge, T
Inagaki, N
Yoshizumi, T
Shimada, H
Kawamoto, T
Matsuki, R
Yamamoto, N
Matsui, M
机构
[1] RIKEN, Plant Funct Genom Res Grp, Plant Funct Explorat Team, Genom Sci Ctr, Wakoshi 3150198, Japan
[2] RIKEN, Frontier Res Program, Lab Photopercept & Signal Transduct, Wakoshi 3510198, Japan
[3] Sci Univ Tokyo, Dept Biol Sci & Technol, Noda, Chiba 2788510, Japan
[4] Cent Res Inst Elect Power Ind, Abiko, Chiba 2701194, Japan
[5] Hokkaido Univ, Grad Sch Environm Earth Sci, Sapporo, Hokkaido 0600810, Japan
基金
日本科学技术振兴机构; 日本学术振兴会;
关键词
COP1; photomorphogenesis; phytochrome; rice (Oryza sativa);
D O I
10.1007/s004380000396
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 isolated a COP1 cDNA from rice and found that it could complement the Arabidopsis cop1-4 mutant. The putative rice COP1 protein has the Ring-finger, coiled-coil, and WD-40 repeat domains, which are also conserved in pea, tomato, and mammalian COP1 proteins. The degree of overall identity between rice COP1 and Arabidopsis COP1 is 73%, and the similarity value is 83%. Expression of rice COP1 was detected in almost all plant tissues, with the level being relatively higher in calli and very low in etiolated leaves. The expression level was positively controlled by light in etiolated and green leaves. At the end of the light period, expression of the gene in green leaves could be down-regulated by far-red light. This far-red light effect could be prevented by subsequent irradiation with red light. These results indicate that phytochrome regulates rice COP1 expression.
引用
收藏
页码:43 / 50
页数:8
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