HUA ENHANCER3 reveals a role for a cyclin-dependent protein kinase in the specification of floral organ identity in Arabidopsis

被引:98
作者
Wang, WM [1 ]
Chen, XM [1 ]
机构
[1] Rutgers State Univ, Waksman Inst, Piscataway, NJ 08854 USA
来源
DEVELOPMENT | 2004年 / 131卷 / 13期
关键词
flower development; HEN3; cyclin-dependent kinase;
D O I
10.1242/dev.01187
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
In plants, organs are generated post-embryonically from highly organized structures known as meristems. Cell division in the meristem is closely integrated with cell fate specification and organ formation. The presence of multiple cyclin-dependent kinases (CDKs) and their partner cyclins in plants and other multicellular organisms probably reflects the complexity of cell cycle regulation within developmental contexts. The Arabidopsis genome encodes at least eight CDKs and 30 cyclins. However, no mutants in any CDKs have been reported, and the function of the great majority of these genes in plant development is unknown. We show that HUA ENHANCER3 (HEN3), which encodes CDKE, a homolog of mammalian CDK8, is required for the specification of stamen and carpel identities and for the proper termination of stem cells in the floral meristem. Therefore, CDK8 plays a role in cell differentiation in a multicellular organism.
引用
收藏
页码:3147 / 3156
页数:10
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