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Sucrose

Company: EMD Millipore
Catalog#: 107687
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Haustorium Induction Assay of the Parasitic Plant Phtheirospermum japonicum
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Date:
2017-05-05
[Abstract]  Phtheirospermum japonicum is a facultative root parasitic plant in the Orobanchaceae family used as a model parasitic plant. Facultative root parasites form an invasive organ called haustorium on the lateral parts of their roots. To functionally characterize parasitic abilities, quantification of haustorium numbers is required. However, this task is quite laborious and time consuming. Here we describe an efficient protocol to induce haustorium in vitro by haustorium-inducing chemicals and host root exudate treatments in P. japonicum. [摘要]  Phtheirospermum japonicum 是用作模型寄生植物的Orobanchaceae科的兼性根寄生植物。兼性根寄生虫在其根部的侧面部分形成称为吸管的侵入性器官。为了在功能上表征寄生能力,需要量化痰液数量。然而,这项任务是非常费力和耗时的。在这里,我们描述了一种有效的方案,通过引诱化学药物和宿主根系渗出物处理在体外诱导体外释放。血吸虫。

背景 寄生植物已经演变成从其他植物获得营养。一些寄生植物通过感染商业作物对农业造成重大损害(Spallek等人,2013)。有义务的寄生植物需要宿主完成其生命周期,而兼性寄生植物可以在没有宿主作为自养生物体的情况下存活,但如果宿主植物在附近则通过感染转移到异养(Westwood等人,2010)。所有寄生植物的共同特征是称为ium a的专门器官,其通过建立血管桥连接寄生虫与宿主(Saucet和Shirasu,2016; ...

Penetration Assays, Fungal Recovery and Pathogenicity Assays for Verticillium dahliae
Author:
Date:
2017-02-20
[Abstract]  Verticillium dahliae is a soil-borne phytopathogenic fungus that infects host roots and proliferates in vascular tissues. The great loss of economically important crop caused by V. dahliae has raised worldwide concern, however, little is known about the mechanism of its pathogenicity (Klosterman et al., 2011; Yadeta and Thomma, 2013). Our recent work has shown that V. dahliae develops hyphopodium as an infection structure to breach plant root cell wall (Zhao et al., 2016). Here, we provide a detailed protocol to analyze the penetration ability and the pathogenicity of V. dahliae as well as recover fungal hyphae from infected cotton stems developed from our previous studies (Zhang et al., 2016a and 2016b; Zhao et al., ... [摘要]  大丽轮枝菌属是土壤传播的植物病原真菌,其感染宿主根并在血管组织中增殖。经济上重要的作物造成的巨大损失。大丽花已经引起了全世界的关注,然而,其致病性机制知之甚少(Klosterman等人,2011; Yadeta和Thomma,2013)。我们最近的工作表明,大丽花开发hyphopodium作为感染结构以破坏植物根细胞壁(Zhao等人,2016)。在这里,我们提供了一个详细的方案来分析渗透能力和致病性。大丽花,以及从以前的研究(Zhang等人,2016a和2016b; Zhao等人,2016年)开发的感染棉花茎中恢复真菌菌丝)。玻璃纸膜已被用于诱导叶面病原体的发育,而不是根系病原体(Bourett和Howard,1990)。我们采用玻璃纸膜的方法诱导和评估hyphopodium的发展。希望能大力促进调控传染性发育的宿主的分子生物学研究。该协议还有助于识别控制V的致病性的关键成分。大丽花,并扩大了我们对植物与微生物相互作用机理的理解。

背景 玻璃纸膜被广泛用于研究叶病原体感染结构的发展(Bourett和Howard,1990; Kleemann等人,2012; Gu等人, ...

In vitro Assessment of RNA Polymerase I Activity
Author:
Date:
2017-02-05
[Abstract]  In eukaryotic cells transcriptional processes are carried out by three different RNA polymerases: RNA polymerase I which specifically transcribes ribosomal RNA (rRNA), RNA polymerase II which transcribes protein-coding genes to yield messenger RNAs (mRNAs) and small RNAs, while RNA polymerase III transcribes the genes for transfer RNAs and for the smallest species of ribosomal RNA (5S rRNA). This protocol describes an in vitro assay to evaluate the rRNA transcriptional activity of RNA polymerase I. The method measures the quantity of radiolabelled uridine 5’ triphosphate incorporated in ex novo synthesized rRNA molecules by RNA polymerase I, in optimal conditions for the enzyme activity and in the presence of a toxin, α-amanitin, which inhibits RNA polymerase II and III ... [摘要]  在真核细胞中,转录过程由三种不同的RNA聚合酶:特异性转录核糖体RNA(rRNA)的RNA聚合酶I,转录蛋白质编码基因以产生信使RNA(mRNA)和小RNA的RNA聚合酶II进行转录,RNA聚合酶III转录转录RNA和最小核糖体RNA(5S rRNA)的基因。该方案描述了用于评价RNA聚合酶I的rRNA转录活性的体外实验方法。该方法测量了合并的rRNA分子中掺入的放射性标记的尿苷5'-三磷酸的量通过RNA聚合酶I,在酶活性的最佳条件和毒素α-amanitin存在下,其抑制RNA聚合酶II和III而不影响RNA聚合酶I(Novello和Stirpe,1970)。

背景 在真核细胞中,RNA聚合酶I转录位于核仁中的核糖体基因,产生45S rRNA前体分子。这些被处理以形成成熟的18S,5.8S和28S ...

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