SUB1, an Arabidopsis Ca2+-binding protein involved in cryptochrome and phytochrome coaction
SUB1, an Arabidopsis Ca2+-binding protein involved in cryptochrome and phytochrome coaction
复制标题
DOI：
10.1126/science.291.5503.487
复制
发表时间：
2001-01-19
期刊：
影响因子：
56.9
通讯作者：
Lin, CT
中科院分区：
文献类型：
--
作者：
Guo, HW;Mockler, T;Lin, CT
隐花色素和光敏色素是植物中主要的光感应受体，通常调节类似的光形态发生反应。隐花色素和光敏色素功能相互作用的分子机制仍不清楚。我们已经鉴定出拟南芥光形态发生突变体 sub1，它对蓝光和远红光表现出过敏反应。遗传分析表明 SUB1 充当隐花色素信号通路的组成部分和光敏色素信号通路的调节剂。 SUB1 基因编码 Ca2+ 结合蛋白，可抑制转录因子 HY5 的光依赖性积累。
Cryptochromes and phytochromes are the major photosensory receptors in plants and often regulate similar photomorphogenic responses. The molecular mechanisms underlying functional interactions of cryptochromes and phytochromes remain Largely unclear. We have identified an Arabidopsis photomorphogenic mutant, sub1, which exhibits hypersensitive responses to blue light and far-red Light. Genetic analyses indicate that SUB1 functions as a component of a cryptochrome signaling pathway and as a modulator of a phytochrome signaling pathway. The SUB1 gene encodes a Ca2+-binding protein that suppresses Light-dependent accumulation of the transcription factor HY5.