Is the extent of the proliferation of component cell lineages critical during organ morphogenesis?

被引:10
作者
Szymkowiak, E
机构
[1] Department of Biological Sciences, University of Iowa, Iowa City
基金
美国国家科学基金会;
关键词
cell interactions; lineage; meristem; morphogenesis; periclinal chimera;
D O I
10.1006/scdb.1996.0104
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Shoot meristems of higher plants are composed of several clonally distinct cell lineages. Periclinal chimeras have been used to determine the fate of derivatives of these lineages in mature leaves and other organs of the plant. Fates of individual meristem cells are not rigidly fixed and the distribution of tissue derived from each meristem lineage in different regions of an organ is variable. The amount of proliferation from an individual lineage can be altered without affecting the overall morphology of organs. Mechanisms exist by which cells from several lineages coordinate their relative amounts of proliferation. The conclusion from these studies is that cell proliferation and organ morphogenesis are developmental events that can be uncoupled.
引用
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页码:849 / 856
页数:8
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