Mechanism of light sensing and signaling mediated by phytochrome and its interacting proteins in plants

利用光敏色素筛选蛋白质相互作用，鉴定了新的锌指蛋白。T-DNA插入相应基因的突变体表现为晚花表型。遗传分析表明，这些基因是光敏色素B的下游调控因子。对这些基因的时空表达、表型互补等研究表明，这些蛋白质在维管组织中的功能主要在细胞核内。我们的发现提供了关于生长控制中光环境与发育之间联系的见解。

The novel zinc finger proteins were identified by protein interaction screening with phytochromes. The mutants having T-DNA insertion in the corresponding genes showed late flowering phenotype. The genetic analysis indicated the genes regulated FT expression as downstream factors of phytochrome B. The studies of temporal and spatial expression, phenotypic complementation with the modified genes indicated the proteins functioned in the nucleus in vascular tissue. Our finding gives insight on the link between light environment and development in growth control.