植物叶发育调控机理研究的进展

在植物的营养生长阶段,叶原基从植物地上部分顶端分生组织的周边区形成,在一系列细胞分裂和分化程序的指导下,最终发育成叶。近年来,通过遗传学和分子生物学研究已经鉴定和克隆了一批参与叶发育调控的关键基因,植物激素在叶原基的诱导和叶形态建成中也起十分重要的作用。目前这个领域的主要研究工作是鉴定调控叶发育的新基因并且解释叶调控基因之间的相互作用,同时了解基因调控和植物激素作用之间的关系。

Recent Progresses from Studies of Leaf Development

In the plant vegetative growth, leaf primordia arise from groups of initial cells within the peripheral zone of the shoot apical meristem. Leaf develops by following a series of cell division and differentiation programs to form its final shape and size. Recent genetic and molecular studies have led to the identification of a number of genes that regulate leaf development, and have also revealed that plant hormones play important roles in leaf primordium induction and leaf patterning. The challenge now is to further identify new players regulating leaf development and to establish the genetic interaction between regulatory genes as well as the relationship between gene regulations and hormone actions.