A Chemical-Induced, Seed-Soaking Activation Procedure for Regulated Gene Expression in Rice.

A Chemical-Induced, Seed-Soaking Activation Procedure for Regulated Gene Expression in Rice.
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用于调节水稻基因表达的化学诱导浸种激活程序

DOI:
10.3389/fpls.2017.01447
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发表时间:
2017
影响因子:
5.6
通讯作者:
Wang F
Wang F
中科院分区:
生物学2区
文献类型:
--
作者:
Chen Z;Cheng Q;Hu C;Guo X;Chen Z;Lin Y;Hu T;Bellizzi M;Lu G;Wang GL;Wang Z;Chen S;Wang F

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诱导基因表达已成为研究植物功能基因组学的有力工具。基于雌激素受体的化学诱导系统XVE已在许多植物物种中使用,但诱导剂β-雌二醇在转基因水稻植物中的有限的系统运动阻止了XVE系统在这一重要粮食作物中的广泛使用。在这里,我们构建了一个改进的化学调控,位点特异性重组系统,采用XVE反式激活蛋白与Cre/loxP-FRT系统相结合,并优化了种子浸泡程序的XVE诱导水稻。利用agus基因和一个针对OsPDS的hpRNAi盒作为报告基因,我们证明了用雌二醇溶液浸泡转基因种子可以在萌发的胚中诱导高效的位点特异性重组,从而使目的基因或RNAi盒在诱导种子的完整植株中组成型高水平表达。该策略为有效调控水稻基因表达提供了一种有效的基因激活方法。
Inducible gene expression has emerged as a powerful tool for plant functional genomics. The estrogen receptor-based, chemical-inducible system XVE has been used in many plant species, but the limited systemic movement of inducer β-estradiol in transgenic rice plants has prohibited a wide use of the XVE system in this important food crop. Here, we constructed an improved chemical-regulated, site-specific recombination system by employing the XVE transactivator in combination with a Cre/loxP-FRT system, and optimized a seed-soaking procedure for XVE induction in rice. By using agusgene and an hpRNAi cassette targeted forOsPDSas reporters, we demonstrated that soaking transgenic seeds with estradiol solution could induce highly efficient site-specific recombination in germinating embryos, resulting in constitutive and high-level expression of target gene or RNAi cassette in intact rice plants from induced seeds. The strategy reported here thereby provides a useful gene activation approach for effectively regulating gene expression in rice.
DOI: 10.1038/nature03895
发表时间: 2005-08-11
期刊: NATURE
影响因子: 64.8
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