A role for LKP2 in the circadian clock of Arabidopsis

被引：200

作者：

Schultz, TF

Kiyosue, T

Yanovsky, M

Wada, M

Kay, SA

机构：

[1] Scripps Res Inst, La Jolla, CA 92037 USA

[2] Kagawa Univ, Ctr Gene Res, Miki, Kagawa 7610795, Japan

[3] Natl Inst Basic Biol, Div Biol Regulat & Photobiol, Okazaki, Aichi 4448585, Japan

[4] Tokyo Metropolitan Univ, Dept Biol Sci, Grad Sch Sci, Tokyo 1920397, Japan

来源：

PLANT CELL | 2001年 / 13卷 / 12期

关键词：

D O I：

10.1105/tpc.13.12.2659

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：

A third member of the ZTL gene family was identified in the Arabidopsis genome and was named LKP2 (for LOV kelch protein2). A cDNA was isolated corresponding to this gene, and plants overexpressing LKP2 were generated. The overexpression of LKP2 resulted in arrhythmic phenotypes for a number of circadian clock outputs in both constant light and constant darkness, long hypocotyls under multiple fluences of both red and blue light, and a loss of photoperiodic control of flowering time. The LKP2 mRNA is not regulated by the circadian clock and was detected in all tissues examined. These results suggest that LKP2 functions either within or very close to the circadian oscillator in Arabidopsis. A model is presented for its mode of action.

引用

收藏

页码：2659 / 2670

页数：12

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