Phototropin and light-signaling in phototropism

被引：64

作者：

Kimura, Mitsuhiro ^{[1
]}

Kagawa, Takatoshi ^{[1
]}

机构：

[1] Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan

来源：

CURRENT OPINION IN PLANT BIOLOGY | 2006年 / 9卷 / 05期

关键词：

D O I：

10.1016/j.pbi.2006.07.003

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Blue-light-induced phototropism in higher plants is regulated by phototropin, which is a photoreceptor kinase that contains a flavin mononucleoticle (FMN). Recently, it was found that this kinase is inhibited by the binding of the LOV2 (light-oxygen-voltage2) domain in the dark but that its activity is increased in the light by the release of the LOV2 domain. Phototropin-associated proteins have been identified, although the proteins that are phosphorylated by phototropin are still unknown. The asymmetrical auxin distribution caused by unilateral irradiation suggests that differential growth is induced by a difference in auxin-regulated gene expression between the shaded and illuminated sides of plant organs. Transcription-related factors, such as NPH4/ARF7, MSG2/IAA19 and SCFTIR1, play key roles in this process.

引用

页码：503 / 508

页数：6

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