PINning down the connections: transcription factors and hormones in leaf morphogenesis

被引:34
作者
Hay, A [1 ]
Barkoulas, M [1 ]
Tsiantis, M [1 ]
机构
[1] Univ Oxford, Dept Plant Sci, Oxford OX1 3RB, England
基金
英国生物技术与生命科学研究理事会;
关键词
D O I
10.1016/j.pbi.2004.07.007
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The past year has seen major advances in delineating the regulatory circuits that control leaf morphogenesis. Regulation of auxin transporters is pivotal in generating auxin gradients that define the sites of leaf inception. In addition, auxin acts via the ARGOS protein to regulate leaf size. HD-ZIPIII transcription factors controlled by micro-RNAs are required to specify adaxial identity in the leaf and vasculature. Elaboration of final leaf shape also depends on the regulated arrest of cell division, and the TCP and JAGGED transcription factors are key regulators of this process. Furthermore, the juxtaposition of abaxial and adaxial identities regulates leaflet placement in dissected leaf species.
引用
收藏
页码:575 / 581
页数:7
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