图1. 玉米叶夹角的调控途径
lg2调控lg1, 但具体机制未知。LG1激活ZmRAVL1的表达, DRL1抑制ZmRAVL1的表达, DRL1与LG1蛋白互作抑制LG1对ZmRAVL1的激活作用(DRL2可能具有与DRL1类似的功能)。ZmRAVL1调控下游brd1的表达, brd1和nana plant2 (na2)都参与油菜素内酯(brassinosteroid, BR)的生物合成。这些基因均通过BR途径调控玉米叶夹角形成。实线表示机制已被阐明, 虚线表示机制未知。

Figure 1. A proposed pathway regulating the leaf angle in maize
lg2 regulates lg1 with an unknown mechanism. LG1 and DRL1 activates and represses the expression of ZmRAVL1, respectively. The DRL1-LG1 complex represses the LG1- activated ZmRAVL1 expression (DRL2 may have a similar function as DRL1). ZmRAVL1 regulates the expression of brd1, which, together with nana plant2 (na2), are involved in the biosynthesis of brassinosteroid (BR) and eventually regulate leaf angle. Solid and dash lines indicate the clear and unclear regulatory mechanism, respectively.