Diurnal leaf movement, named nyctinasty, has been of great interest to researchers since Darwin's time. In this issue, Kong et al. (pp. 1880–1894) report that leaf movement is orchestrated by clock gene MtLHY in a legume species Medicago truncatula, which is also influenced by the availability of nitrogen produced by the nodules in an MtLHY dependent manner.

中文翻译：

---

封面图片：豆科植物的结节性叶子运动

自达尔文时代以来，研究人员就对昼夜叶片运动（称为夜蛾）感兴趣。在本期中，Kong等人。（pp。1880–1894）报告说，豆科苜蓿苜蓿（Medicago truncatula）中的时钟基因MtLHY协调了叶片运动，这也受结节以MtLHY依赖方式产生的氮的可用性影响。