...-mail: jreed@email.unc.edu ) 27 2 2009 © 2009. 2009 Auxin Aux/IAA Phyllotaxy Embryo Plant embryos provide a simple context in which to study patterning and differentiation events that are reiterated at later stages. In Arabidopsis , cotyledon placement and outgrowth, flower...

...Alexis Peaucelle; Halima Morin; Jan Traas; Patrick Laufs In plants, the arrangement of organs along the stem (phyllotaxy) follows a predictable pattern. Recent studies have shown that primordium position at the meristem is governed by local auxin gradients, but little is known about the subsequent...

...Mary E. Byrne; Andrew T. Groover; Joseph R. Fontana; Robert A. Martienssen Lateral organs in plants arise from the meristem in a stereotypical pattern known as phyllotaxy. Spiral patterns result from initiation of successive organs at a fixed angle of divergence but variable patterns of physical...

... throughout the plant kingdom. The mechanism by which these patterns, termed phyllotaxies, are generated, remains unclear. Maize plants initiate leaves singly, alternating from one side to the other in a regular pattern. Here we describe a recessive maize mutant, abphyl1 , that initiates leaves in opposite...