Photoperception and its mechanism of blue light receptor phototropin in plants

植物蓝光受体向光素的光感知及其机制

基本信息

批准号：
13139203
负责人：
WADA Masamitsu
金额：
$ 87.1万
依托单位：
National Institute for Basic Biology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2005
项目状态：
已结题

项目摘要

Plants use light for controlling their development and physiological phenomena. Blue light is as effective as red light and mediates phototropic response, chloroplast movement, stomata opening, leaf expansion, etc. These responses are mediated by one of the blue light photoreceptors, phototropins. Phototropins are consisted of serine/threonine protein kinase in C-terminus half and two LOV domains in N-terminus half. LOV domains bind flavin mononucleotides and absorb blue light. Our purpose in this grant was to study the phototropin signal trasduction pathways in chloroplast movement, stomata opening and phototropism and clarify the primary action of photoperception of phototropins and related photoreceptor, phytochrome 3. We studied on these subjects for four years from 2001 to March 2005 and found various new aspects on phototropins. We published 44 original papers including 4 Nature papers and 1 Science paper and 17 reviews on phototropin and phototropin related photoreceptors. Some of them are listed in the references attached.Although our research in this project finished at the end of March 2005, we held a two-days symposium on phototropins on November 2005 at Okazaki, hoping further advancement of phototropin studies in near future. In this symposium, two experts on this subject, Dr.John Christie from Glasgow and Dr.Kevin Gardner from Texas were invited and hot discussions were taken place for searching the ways to go for further advanced studies of phototropins and phototropin-mediated responses.

植物使用光来控制其发育和生理现象。蓝光与红光一样有效，可以介导光粒子反应，叶绿体运动，气孔开口，叶片膨胀等。这些反应是由蓝光光感受器，光感罗蛋白之一介导的。光细胞由C-末端中半末端的丝氨酸/苏氨酸蛋白激酶组成，而N-末端的两个LOV结构域组成。 LOV结构域结合黄素单核苷酸并吸收蓝光。我们在这笔赠款中的目的是研究叶绿体运动，气孔开放和光子主义中的光质信号trasduction途径，并阐明光营养蛋白的光接收和相关光感受器的主要作用，以及相关的光感受器，PhytoChrome 3。我们在2001年3月至2005年3月在这些受试者上进行了研究，从2001年至2005年3月进行了研究，并在各种新的方面进行了新的方面。我们发表了44篇原始论文，其中包括4篇自然论文和1篇科学论文以及17篇有关光质蛋白和相关光感受器的评论。其中一些在附带的参考文献中列出了。尽管我们在2005年3月底完成的研究中的研究，但我们于2005年11月在冈扎基举行了两天的光股蛋白研讨会，希望在不久的将来进步光蛋白研究。在本次研讨会上，两位有关该主题的专家，格拉斯哥的约翰·克里斯蒂（John Christie）博士和得克萨斯州的凯文·加德纳（Kevin Gardner）博士受邀，并进行了热门讨论，以搜索如何进一步研究光质蛋白和光蛋白介导的反应的方法。