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Phytochrome-mediated formation of terpenoids and glandular trichomes, and rapid tyrosine phosphorylation of a 25-kDa protein in thyme seedlings

百里香幼苗中光敏色素介导的萜类化合物和腺毛的形成以及 25 kDa 蛋白质的快速酪氨酸磷酸化

基本信息

批准号：
02804057
负责人：
TANAKA Shigeo
金额：
$ 1.09万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

项目摘要

The exposure of dark-grown, 4-day-old seedlings of thyme(Thymus vulgaris L., Labiatae)to red light(2.0 Wm^<-2>)for 30 min caused a significant increase in the levels of mono, sesqui-, tri- and tetraterpenoids in cotyledons. This photoresponse proved to be reversible by alternate 30-min periods of irradiation with red and far-red(2.0 Wm^<-2>)light, indicating the participation of phytochrome in the photoregulation of the synthesis of various terpenoids. Such photoreversibility was also observed in the case of the formation of blandular trichomes, biosynthetic sites of monoterepenes, in the cotyledons. We recently found that R/FR photoreversibility was operative in the stimulation of rapid thyrosine phosphorylation of a 25000-Mr protein, suggesting that the activation of tyrosine kinase(s)could be involved in the signal transduction of phytochrome.

在黑暗中生长的4天龄的百里香幼苗（Thumbervulgaris L.，Labibiazole）照射红光（2.0 Wm 2<-2>）30 min引起子叶中单萜、倍半萜、三萜和四萜类化合物水平的显著增加。这种光响应被证明是可逆的，通过交替30分钟的红色和远红色（2.0 Wm^）光照射<-2>，表明光敏色素参与各种萜类化合物合成的光调节。这种光可逆性也观察到的情况下，形成的blandular毛状体，单萜类的生物合成网站，在子叶。我们最近发现，R/FR光可逆性在刺激25000-Mr蛋白的快速甲状腺素磷酸化中起作用，这表明酪氨酸激酶的激活可能参与光敏色素的信号转导。