Fluorescence studies on nyctinasty which suggest the existence of genus-specific receptors for leaf-movement factor
作者:Hideharu Nagano、Eisuke Kato、Shosuke Yamamura、Minoru Ueda
DOI:10.1039/b308764f
日期:——
Periodic leaf-movement of legumes is called nyctinasty and has been known since the age of Alexander the Great. We found that nyctinasty is controlled by a periodic change of the internal concentration of leaf-opening and leaf-closing substances in the plant body. Now, we have developed novel fluorescent probes (1) based on the structure of cis-p-coumaroylagmatine (3), which was isolated as a leaf-opening substance of Albizzia juribrissin Durazz. Binding experiments using probe 1 showed that Albizza plants have receptors for a leaf-opening substance in their motor cells. By using probes 1 we then found that genus-specific receptors are involved in nyctinasty.
豆科植物的周期性动叶被称为 "叶动"(nyctinasty),早在亚历山大大帝时代就已为人所知。我们发现,豆科植物的 "夜动症 "是由植物体内部开叶和闭叶物质浓度的周期性变化控制的。现在,我们根据顺式对香豆酰拉格马汀(3)的结构开发出了新型荧光探针(1),该探针是作为 Albizzia juribrissin Durazz 的一种开叶物质分离出来的。使用探针 1 进行的结合实验表明,阿尔比沙植物的运动细胞中存在开叶物质受体。通过使用探针 1,我们发现种属特异性受体参与了夜来香的作用。