UFO - AN ARABIDOPSIS GENE INVOLVED IN BOTH FLORAL MERISTEM AND FLORAL ORGAN DEVELOPMENT
UFO - AN ARABIDOPSIS GENE INVOLVED IN BOTH FLORAL MERISTEM AND FLORAL ORGAN DEVELOPMENT
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DOI：
10.1105/tpc.7.5.529
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发表时间：
1995-05-01
期刊：
影响因子：
11.6
通讯作者：
MEYEROWITZ, EM
中科院分区：
文献类型：
--
作者：
LEVIN, JZ;MEYEROWITZ, EM
我们基于对9个ufo等位基因表型的遗传和分子特征描述，阐述了拟南芥中异型花器官（UFO）基因在花发育过程中的作用。UFO基因对于花分生组织的正确特性是必需的，并且在区分花与枝条的过程中的三个不同方面发挥作用。UFO参与建立花器官的轮状模式，控制花分生组织的确定性，并激活决定花瓣和雄蕊特性所需的APETALA3和PISTILLATA基因。在很多方面，UFO的作用方式与LEAFY相似，但ufo突变体表型也表明UFO在确定花原基内的边界或在花器官生长过程中控制细胞增殖方面具有额外的作用。最后，阻止花形成并导致丝状结构产生的遗传相互作用表明，UFO是拟南芥中一类新的、庞大且多样的、对花形成必需的基因家族的成员。
We describe the role of the UNUSUAL FLORAL ORGANS (UFO) gene in Arabidopsis floral development based on a genetic and molecular characterization of the phenotypes of nine ufo alleles. UFO is required for the proper identity of the floral meristem and acts in three different aspects of the process that distinguishes flowers from shoots. UFO is involved in establishing the whorled pattern of floral organs, controlling the determinacy of the floral meristem, and activating the APETALA3 and PISTILLATA genes required for petal and stamen identity. In many respects, UFO acts in a manner similar to LEAFY, but the ufo mutant phenotype also suggests an additional role for UFO in defining boundaries within the floral primordia or controlling cell proliferation during floral organ growth. Finally, genetic interactions that prevent flower formation and lead to the generation of filamentous structures implicate UFO as a member of a new, large, and diverse class of genes in Arabidopsis necessary for flower formation.