中文摘要：

通过RNA干涉对一个水稻锌指蛋白基因OsZRL的功能进行分析。半定量RT-PCR、定量PCR分析结果显示,转基因植株OsZRL基因表达水平显著下调。与野生型相比,OsZRL表达水平下调的转基因株系叶片变大,根系、茎秆更为发达,表明OsZRL的下调对水稻植株的生长有促进作用。OsZRL基因的表达模式和转基因幼苗表型显示OsZRL参与赤霉素、脱落酸信号途径。因而推测锌指蛋白OsZRL是受赤霉素、脱落酸调节的水稻生长发育负调控因子。

英文摘要：

The function of a rice zinc-finger protein gene（OsZRL） was investigated by RNA interference.The results of semi-quantitative RT-PCR and quantitative PCR analysis indicated that OsZRL expression levels were significantly downregulated in the transgenic plants.The OsZRL-RNAi transgenic lines were characterized by bigger leaves,stronger roots and stems compared to wild type plants,indicating that the suppression of OsZRL had a positive effect on rice growth.The expression pattern and transgenic seedlings phenotypes revealed that OsZRL was involved in gibberellin or abscisic acid signaling pathway.It suggests that zinc-finger protein OsZRL might perform its function of negetive regulator in rice growth through the regulation of gibberellin and abscisic acid.