Bowman J L
Section of Plant Biology, University of California Davis, Davis, 95616, CA, USA.
Curr Opin Plant Biol. 2000 Feb;3(1):17-22. doi: 10.1016/s1369-5266(99)00035-7.
The establishment of abaxial-adaxial polarity in lateral organs involves factors intrinsic to the primordia and interactions with the apical meristem from which they are derived. Recently, a small plant-specific family of genes, the YABBY gene family, has been proposed to specify abaxial cell fate. Each asymmetric above-ground lateral organ expresses at least one member of the family in a polar manner, and loss- and gain-of-function studies indicate that they are sufficient to specify abaxial cell fate and that they act in both distinct and redundant manners.
侧生器官中背腹极性的建立涉及原基的内在因素以及与它们所起源的顶端分生组织的相互作用。最近，有人提出一个植物特有的小基因家族——YABBY基因家族，来确定背侧细胞命运。每个不对称的地上侧生器官都以极性方式表达该家族的至少一个成员，功能丧失和功能获得研究表明，它们足以确定背侧细胞命运，并且它们以不同和冗余的方式发挥作用。
