生长素对拟南芥叶片发育调控的研究进展

叶片（包括子叶）是茎端分生组织产生的第一类侧生器官，在植物发育中具有重要地位。早期叶片发育包括三个主要过程：叶原基的起始，叶片腹背性的建立和叶片的延展。大量证据表明叶片发育受到体内遗传机制和体外环境因子的双重调节。植物激素，尤其是生长素在协调体内外调节机制中起着不可或缺的作用。生长素的稳态调控、极性运输和信号转导影响叶片发育的全过程。本文着重介绍生长素在叶片生长发育和形态建成中的调控作用，试图了解复杂叶片发育调控网络。

Regulation of Leaf Development by Auxin in Arabidopsis

Leaf is the first lateral organ produced by the activity of the shoot apical meristem (SAM). Early leaf development is artificially divided into three main stages: the initiation of leaf primordium, the establishment of leaf adaxial-abaxial polarity, and the expansion of leaf blade. Numerous of evidence indicates that leaf develop- ment is regulated by inner genetic mechanism and outer environmental cues. Phytohormones, especially auxin, play essential roles in coordination of these two regulation mechanisms. Auxin homeostasis, polar transport and signaling affect the whole progress of leaf development. In this mini-review, we will summarize recent progress of auxin regulation in leaf development and morphogenesis, and try to understand the complex regulation network of leaf development.