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Chloramphenicol BioChemica

氯霉素生物化学

Company: AppliChem
Catalog#: A1806
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Isolation of Ustilago bromivora Strains from Infected Spikelets through Spore Recovery and Germination
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Date:
2017-07-20
[Abstract]  Ustilago bromivora is a biotrophic smut fungus infecting Brachypodium sp. It is closely related to the barley-infecting smut Ustilago hordei, and related to the well-studied, gall-inducing model pathogen Ustilago maydis. Upon flowering, the spikelets of U. bromivora-infected plants are filled with black fungal spores. While it is possible to directly use this spore material to infect Brachypodium seeds, in many cases it is more useful to isolate individual strains of U. bromivora for a genetically homogenous population. This protocol describes how to collect and germinate the spores of U. bromivora on plate in order to obtain strains derived from a single cell. [摘要]  Ustilago bromivora 是感染Brachypodium sp的生物营养性真菌真菌。 它与大麦感染黑斑病大西洋黑格尔(Hstilago hordei)密切相关,并且与研究良好的胆汁诱导型模型病原体Ustilago maydis有关。 开花时,U的小穗 受感染的植物充满黑色真菌孢子。 虽然可以直接使用这种孢子材料感染种子,但是在许多情况下,分离个体U株更有用。 bromivora 用于遗传上均匀的群体。 该协议描述了如何收集和发芽的U孢子。 溴代,以获得源自单细胞的菌株。
【背景】长期以来,感染玉米的Ustilago maydis已经被确定为用于研究生物营养性病原体的模型系统(Brefort等人,2009)。这导致了关于生物相互作用的性质的许多发现,但由于在实验室中与玉米的实际困难而受到限制。对于感染大麦(Hordeum vulgare )(Laurie等人,2012)的模型真菌Ustilago hordei也是如此。与这些作物植物相反,模式草(Brachypodium distachyon)具有小的基因组,不成熟的生长条件,并且易于遗传操作(Draper等人,2001)。  B中。 distachyon 也被用于研究非对虾对小麦条锈菌的抗性。 SP。由于其通常的宿主,小麦(An 等人,2016)的遗传复杂性,小麦具有。最近,我们已经描述了Ustilago ...

Macromolecular Biosynthesis Assay for Evaluation of Influence of an Antimicrobial on the Synthesis of Macromolecules
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Date:
2013-06-20
[Abstract]  One of the most compelling approaches in the discovery of novel antimicrobials is screening of natural sources. In our publication we report on the activity of a compound 8-hydroxyserrulat-14-en-19-oic acid (EN4), a diterpene isolated from the Australian plant Eremophila neglecta. We evaluate its applicability for treatment of implant-associated infections. A comprehensive analysis of the mechanism of action of EN4 against staphylococci revealed its membranolytic properties and a general inhibition of macromolecular biosynthesis, which was confirmed in a macromolecular biosynthesis assay and suggested a multitarget activity. The method used to investigate an influence of EN4 on the synthesis of peptidoglycan, RNA, DNA and proteins is based on precipitation of macromolecules with ... [摘要]  在发现新的抗微生物剂中最引人注目的方法之一是筛选天然来源。在我们的出版物中,我们报告了一种化合物8-羟基胆固醇-14-烯-19-酸(EN4)(一种从澳大利亚植物中分离的二萜烯)的活性。我们评估其适用于植入物相关感染的治疗。对EN4对葡萄球菌的作用机制的综合分析揭示其膜分解性质和大分子生物合成的一般抑制,其在大分子生物合成测定中被证实并提出多靶点活性。用于研究EN4对肽聚糖,RNA,DNA和蛋白质的合成的影响的方法是基于大分子与三氯乙酸的沉淀。这些大分子由相应的[3 H] - 标记的前体合成。测量掺入和不掺入抗微生物剂的放射性,并反映测试化合物的作用模式。使用具有已知作用机制的抗生素作为对照。

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