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50 ml Falcon conical centrifuge tubes

50ml Falcon锥形离心管

Company: VWR
Catalog#: 21008-940
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Isolation of Rhizosphere Bacterial Communities from Soil
Author:
Date:
2015-08-20
[Abstract]  Rhizosphere bacterial communities have become a major focal point of research in recent years, especially regarding how they affect plants and vice versa (Philippot et al., 2013). Changes in microbial density and diversity within the rhizosphere occur in a spatial temporal manner. The soil zone closest to the plant roots has the most density and diversity of microbes (Clark, 1940). The lack of methods to consistently isolate rhizosphere samples in a spatially defined manner is a major bottleneck in rhizosphere microbiology. We hypothesized that microbes with increasing affinities to and distance from the plant root can be isolated using increasing strengths of physical disruption. Sonication is an excellent choice due to the ability to gently remove rhizosphere soil and ... [摘要]  根际细菌群落已成为近年来研究的主要焦点,特别是关于它们如何影响植物或反之亦然(Philippot等人,2013)。根际微生物密度和多样性的变化以空间时间方式发生。最接近植物根部的土壤区具有最密集和多样性的微生物(Clark,1940)。缺乏以空间定义的方式一致地分离根际样品的方法是根际微生物学的主要瓶颈。我们假设可以使用增加的物理破坏的强度来分离具有对植物根部的亲和力和距植物根部的距离增加的微生物。超声是一个很好的选择,因为能够轻轻地去除根际土壤和细菌生物膜而不损害植物根(Doi T等人,2007; Bulgarelli等人,2012年; Lundberg等人,2012)。此外,简单地增加超声处理的时间可以增加物理力的量。我们使用这样的方法来一致地分离对大豆根具有不同亲和力的微生物群落(White等人,2014)。本文介绍了使用连续超声处理来隔离远端,中间和近端土壤与大豆根部的根际。

Axenic Culture of Sclerotinia sclerotiorum and Preparation of Sclerotinia Culture Filtrate Elicitor 1 (SCFE1)-containing Fractions, Triggering Immune Responses in Arabidopsis thaliana
Author:
Date:
2014-09-05
[Abstract]  The necrotrophic white mold fungus Sclerotinia sclerotiorum (S. sclerotiorum) is pathogenic to a broad range of plant species, including the Brassicaceae model plant Arabidopsis thaliana (Boland and Hall, 1994; Bolton et al., 2006). In Arabidopsis thaliana (A. thaliana), the semi-purified proteinaceous S. sclerotinorum elicitor SCFE1 (Sclerotinia culture filtrate elicitor 1) is sensed at the plasma membrane by the receptor-like protein RLP30 and triggers strong immune responses (Zhang et al., 2013), similar to the bacterial elicitor flagellin (Felix et al., 1999). Elicitation of plant defenses with SCFE1 is a tool to dissect the signaling pathway involving RLP30 and to study immunity to necrotrophic ... [摘要]  坏死性白霉菌真菌(Sclerotinia sclerotiorum)(核盘菌)对广泛的植物物种(包括十字花科模式植物拟南芥(Arabidopsis thaliana))具有致病性, (Boland和Hall,1994; Bolton等人,2006)。在拟南芥中(thaliana),是半纯化的蛋白质。通过受体样蛋白RLP30在质膜感测核盘菌诱导物SCFE1(核盘菌属培养物滤液诱发物1),并且引发强烈的免疫应答(Zhang等人。,2013),类似于细菌激发剂鞭毛蛋白(Felix等人,1999)。植物防御与SCFE1的诱导是一个工具,以解剖涉及RLP30的信号通路和研究对坏死性真菌的免疫。在这里,我们描述一个简单的协议来生长。菌核。此外,我们提出了一种两步液相色谱法从培养滤液中部分纯化SCFE1的方法(图1A-B)。通过气相色谱法测定植物应激激素乙烯的发射作为生物测定,以在整个纯化程序中监测级分中的激发剂活性(图1C)。

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