病毒诱导的基因沉默在番茄组织中的特异性分析

 病毒诱导的基因沉默（VIGS）是植物基因功能研究的新技术。以组成型表达gusA基因的转基因番茄为材料，通过VIGS技术沉默gusA基因，对VIGS在番茄中的组织特异性进行了初步分析。结果表明，VIGS技术能有效地诱导gusA基因在番茄植株的叶片、花、果实、侧枝、主茎及茎分枝点等部位和组织中沉默，证明VIGS在番茄中具有较强的系统性沉默特征。

Tissue Specificity Analysis of Virus-induced Gene Silencing in Tomato

Virus-induced gene silencing (VIGS) is a recently developed technique for gene function studies in plants. In this study, the gusA transgenic tomato plant which constitutively expressed gusA gene was used as material. The gusA gene was silenced by VIGS for the preliminary tissue specificity analysis of VIGS in tomato. The results showed that gusA could be silenced in leafs, flowers, fruits, branches, stems and the points between branch and stem of tomato by virus-induced gene silencing. So VIGS as a powerful tool for the study of gene function could induce target gene systematic silencing in tomato.