拟南芥锌指蛋白GIS亚家族基因ZFP6的克隆和功能分析

Zinc finger protein is one of the most complex gene family in the plant genome. They play important roles in the different process of plant growth and development. Our previous studies had showed that the GIS gene family GLABROUS INFLORESCENCE STEMS (GIS), GIS2, ZINC FINGER PROTEIN 8(ZFP8) and ZFP5 control trichome initiation through integration of gibberellin and cytokinin signal in Arabidopsis. By using the genetics and molecular analyses, we characterized and investigate whether the GIS subfamily gene ZFP6 also play a key role in the regulation of plant epidermal cell differentiation in Arabidopsis. Our results showed that overexpression of ZFP6 results in the increase of trichomes on the inflorescence organs. The loss of function ZFP6 mutation exhibited reduced trichome number in sepals, cauline leaves and lateral stems. These findings suggest that ZFP6 is an important transcriptional factor to control trichome initiation in Arabidopsis.