Study on Two-Component Systems in Plants

所谓的双组分系统（TCS）为我们提供了原核生物（包括许多细菌物种）信号传导系统的范式。TCS在信号感知和对各种环境刺激的适应性反应中起着重要而普遍的作用。然而，应该强调的是，在进化过程中，植物也进化出了复杂的TCS，它现在在植物发育中发挥重要的生理作用，不仅包括植物激素细胞分裂素和乙烯的感知和信号转导，而且还包括植物昼夜节律钟系统。为了更深入地了解TCS在植物中的生理作用，本研究不仅采用了模式植物拟南芥，还采用了模式豆科植物百脉根和原始陆生苔藓小立碗藓。这些结果为植物TCS的研究提供了新的思路，特别是在细胞分裂素信号转导和生物钟机制方面。这些结果已经发表在一系列报告中，多达30份。

The so-called Two-Component Systems (TCS) provide us with the paradigm of signal transduction system in prokaryotes, including numerous bacterial species. TCS play important and general roles in signal perception and adaptive response to a variety of environmental stimuli. However, it should be emphasized that, during evolution, plants also have evolved sophisticated TCS, which now play important physiological roles in plant developments, including not only the phytohormone cytokinin and ethylene perception and signal transduction but also the plant circadian clock systems. In order to gain more fundamental insights into the physiological roles of TCS in plants, in this study we employed not only the model plant Arabidopsis thaliana, but also the model legume Lotus japonicus and the primitive land moss physcomitrella patens. As the results, we gained a number of new insights into the plant TCS, particularly, with regard to the mechanisms underlying cytokinin signal transduction and circadian clock. These results have already been published in a series of reports, as many as 30.