Use of the modified viral satellite DNA vector to silence mineral nutrition-related genes in plants: silencing of the tomato ferric chelate reductase gene, FRO1, as an example

文献类型： 外文期刊

第一作者： Li GuiXin

作者： Li GuiXin;Zhou XuePing;He XiuXia;Jin ChongWei;He XiuXia;You GuangYi;Zheng ShaoJian

作者机构：

关键词： virus-induced gene silencing;roots;ferric chelate reductase

期刊名称：SCIENCE IN CHINA SERIES C-LIFE SCIENCES （ 影响因子：1.61； 五年影响因子：1.148 ）

ISSN： 1006-9305

年卷期： 2008 年 51 卷 5 期

页码：

收录情况： SCI

摘要： Virus-induced gene silencing (VIGS) is potentially an attractive reverse-genetics tool for studies of plant gene function, but whether it is effective in silencing mineral nutritional-related genes in roots has not been demonstrated. Here we report on an efficient VIGS system that functions in tomato roots using a modified viral satellite DNA (DNAm beta) associated with Tomato yellow leaf curl China virus (TYLCCNV). A cDNA fragment of the ferric chelate reductase gene (FRO1) from tomato was inserted into the DNAm beta vector. Tomato roots agro-inoculated with DNAm beta carrying both a fragment of FRO1 and TYLCCNV used as a helper virus exhibited a significant reduction at the FRO1 mRNA level. As a consequence, ferric chelate reductase activity, as determined by visualization of the pink FeBPDS3 complex was significantly decreased. Our results clearly demonstrated that VIGS system can be employed to investigate gene function associated with plant nutrient uptake in roots.

分类号： Life Sciences & Biomedicine - Other Topics

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