Circadian rhythm regulation in mangrove tree under aquatic environment controlled by tidal rhythm

潮汐节律控制的水生环境下红树林昼夜节律调节

基本信息

批准号：
23658132
负责人：
WATANABE SHIN
金额：
$ 2.5万
依托单位：
University of the Ryukyus
依托单位国家：
日本
项目类别：
Grant-in-Aid for Challenging Exploratory Research
财政年份：
2011
资助国家：
日本
起止时间：
2011 至 2012
项目状态：
已结题

项目摘要

Circadian rhythm is one of the most crucial mechanisms for controlling physiological function in plant species. In mangrove trees, circadian rhythm must be very significant, however the ecological niche of mangrove ecosystem is exposed to unusual aquatic environment controlled by tidal inundation, which has different rhythm (12 hours and 25 minutes) with circadian rhythm (24 hours). In order to elucidate the relationship between circadian rhythm and the physiological reaction of mangrove species exposed to tidal rhythmic aquatic environment, we studied especially about the gene expression of circadian rhythm related functional gene, chlorophyll a/b-binding protein (CAB2). As the result, it was suggested that the circadian rhythm was maintained regularly in mangrove tree even under aquatic environment controlled by tidal rhythm.

昼夜节律是控制植物物种生理功能的最关键机制之一。在红树林中，昼夜节律必须非常重要，但是，红树林生态系统的生态基础暴露于由潮汐淹没控制的不寻常的水生环境，潮汐泛滥（12小时25分钟）的昼夜节律（24小时）（24小时24小时）。为了阐明昼夜节律与暴露于潮汐节律水生环境的红树林的生理反应之间的关系，我们特别研究了昼夜节律相关功能基因的基因表达，叶绿素A/B结合蛋白（CAB2）。结果，建议即使在潮汐节奏控制的水生环境下，昼夜节律也定期在红树林中保持。