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Company: Bio-Rad Laboratories
Catalog#: 1725203
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The Use of a Dexamethasone-inducible System to Synchronize Xa21 Expression to Study Rice Immunity
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2015-05-05
[Abstract]  Inducible gene expression systems offer researchers the opportunity to synchronize target gene expression at particular developmental stages and in particular tissues. The glucocorticoid receptor (GR), a vertebrate steroid receptor, has been well adopted for this purpose in plants. To generate steroid-inducible plants, a construct of GAL4-binding domain-VP16 activation domain-GR fusion (GVG) with the target gene under the control of upstream activation sequence (UAS) has been developed and extensively used in plant research.

Immune receptors perceive conserved molecular patterns secreted by pathogens and initiate robust immune responses. The rice immune receptor, XA21, recognizes a molecular pattern highly conserved in all sequenced genomes of Xanthomonas, ...
[摘要]  诱导型基因表达系统为研究人员提供了在特定发育阶段,特别是组织中同步靶基因表达的机会。糖皮质激素受体(GR),一种脊椎动物类固醇受体,已经在植物中被很好地用于此目的。为了产生类固醇诱导的植物,已经开发了在上游激活序列(UAS)控制下具有靶基因的GAL4结合结构域-VP16激活结构域-GR融合(GVG)的构建体,并广泛用于植物研究中。
免疫受体感知由病原体分泌的保守分子模式,并启动强烈的免疫应答。水稻免疫受体,XA21 识别在所有测序的黄单胞菌属的基因组中高度保守的分子模式,并且赋予对X的强抗性。 oryzae pv。 oryzae ( Xoo )。然而,鉴定XA21 下游的基因受到限制性损伤的阻碍,因此在表达Xa21 的植物中限制了防御反应区域。诱导型表达允许跨大量水稻组织的同步免疫应答,非常适合通过全基因组方法(例如转录组学和蛋白质组学)研究XA21 介导的免疫。在该协议中,我们描述了使用该GVG系统来同步 Xa21 表达。

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