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Na2MoO4∙2H2O

钼酸钠二水合物

公司名称: Sigma-Aldrich
产品编号: M1651
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In vivo and in vitro 31P-NMR Study of the Phosphate Transport and Polyphosphate Metabolism in Hebeloma cylindrosporum in Response to Plant Roots Signals
Author:
Date:
2018-08-20
[Abstract]  We used in vivo and in vitro phosphorus-31 nuclear magnetic resonance (31P-NMR) spectroscopy to follow the change in transport, compartmentation and metabolism of phosphate in the ectomycorrhizal fungus Hebeloma cylindrosporum in response to root signals originating from host (Pinus pinaster) or non-host (Zea mays) plants. A device was developed for the in vivo studies allowing the circulation of a continuously oxygenated mineral solution in an NMR tube containing the mycelia. The in vitro studies were performed on ... [摘要]  我们使用体内和体外磷-31核磁共振( 31 P-NMR)光谱来跟踪运输,分区和 外生菌根真菌 Hebeloma cylindrosporum 中的磷酸盐代谢响应来自宿主( Pinus pinaster )或非宿主( Zea mays )的根信号植物。 开发了一种用于体内研究的装置,其允许连续氧化的矿物质溶液在含有菌丝体的NMR管中循环。 在几个连续的处理步骤(在液氮中冷冻;用高氯酸压碎;消除高氯酸;冷冻干燥;在适当的液体培养基中溶解)后,对真菌材料进行体外研究。

【背景】 菌根真菌和植物之间的关联改善了宿主植物的P营养(Smith和Read,2008; Plassard和Dell,2010; Cairney,2011; Smith 等人,,2015)。这种积极效应主要归因于真菌菌丝对磷酸盐(Pi)的吸收,探测了在活跃吸收根周围的耗竭区以外的大量土壤(Smith和Read,2008; Cairney,2011; Smith et al。< em="">,2015)和真菌细胞分泌细胞外磷酸酶(Quiquampoix和Mousain,2005)。吸收的Pi部分地掺入磷酸化的代谢物,磷脂和核酸中,并且部分地浓缩成多磷酸盐(PolyP),其中它们构成液泡中的储存池(Ashford 等人,,1994)。该协议详述了一种装置,该装置允许通过 31 ...

Tracking Lipid Transfer by Fatty Acid Isotopolog Profiling from Host Plants to Arbuscular Mycorrhiza Fungi
Author:
Date:
2018-04-05
[Abstract]  Lipid transfer from host plants to arbuscular mycorrhiza fungi was hypothesized for several years because sequenced arbuscular mycorrhiza fungal genomes lack genes encoding cytosolic fatty acid synthase (Wewer et al., 2014; Rich et al., 2017). It was finally shown by two independent experimental approaches (Jiang et al., 2017; Keymer et al., 2017; Luginbuehl et al., 2017). One approach used a technique called isotopolog profiling (Keymer et al., 2017). Isotopologs are molecules, which differ only in their isotopic composition. For ... [摘要]  因为测序的丛枝菌根真菌基因组缺乏编码胞质脂肪酸合酶的基因(Wewer等人,2014; Rich等人,2014),因此假定脂质从宿主植物转移到丛枝菌根真菌数年。 / em>,2017)。最终通过两种独立的实验方法(Jiang等人,2017; Keymer等人,2017; Luginbuehl等人, ), 2017年)。一种方法使用称为同位素体谱分析的技术(Keymer等人,2017)。同位素体是分子,它们的同位素组成不同。对于同位素生物学分析,生物体被喂以重同位素标记的前体代谢物。随后,通过质谱分析代谢产物的标记同位素组成。检测到的目标代谢物的同位素体模式产生关于代谢途径和通量的信息(Ahmed et al。,2014)。以下协议描述了一个实验装置,该装置能够在由丛枝菌根真菌及其相关真菌胞外菌丝体定植的植物根中分离出脂肪酸的单独同位素分布图,以阐明两种共生生物之间的通量。我们预测,如果两种相互作用的生物体可以物理分离,则该策略还可以用于研究其他生物体之间的代谢物通量。

【背景】丛枝菌根真菌是生物营养生物。因此,它们不能独立栽培,而是依靠与寄主植物的相互作用来维持生命并完成它们的生命周期。这一特征使得研究两种共生生物,特别是单独的真菌具有挑战性。

为了培养,处理和收获与宿主根分开的真菌,开发了2室培养皿系统,并将其用于以前工作中的标记研究(Bécard和Fortin,1988; ...

A Method for Radioactive Labelling of Hebeloma cylindrosporum to Study Plant-fungus Interactions
Author:
Date:
2017-10-20
[Abstract]  In order to quantify P accumulation and P efflux in the ectomycorrhizal basidiomycete fungus Hebeloma cylindrosporum, we supplied 32P to mycelia previously grown in vitro in liquid medium. The culture had four main steps that are 1) growing the mycelium on complete medium with P, 2) transfer the mycelia into new culture solution with or without P, 3) adding a solution containing 32P and 4) rinsing the mycelia before incubation with or without plant. The main point is to rinse very carefully the mycelia after 32P supply in order to avoid ... [摘要]  为了量化外生菌根担囊菌真菌Hebeloma cylindrosporum中的P积累和P流出,我们向以前在体外生长的菌液提供了 32 P 中。 培养物有四个主要步骤:1)在具有P的完全培养基上培养菌丝体,2)将菌丝体转移到具有或不具有P的新培养溶液中,3)加入含有32和32的溶液 )在与或不与植物孵育之前冲洗菌丝体。 要点是在 32 P供应之后非常仔细地冲洗菌丝体,以避免过高估计P P。
【背景】众所周知,菌根真菌和植物之间的关联改善了宿主植物的P营养(由Smith和Read,2008; Plassard和Dell,2010; Cairney,2011; Smith等人,2015)。这种积极的作用主要是由于真菌细胞探索远离根部的土壤的磷酸盐(Pi)吸收,允许探索大量的土壤超过主要吸收根部周围形成的耗尽区(Smith and Read,2008; Cairney,2011; Smith ,2015)。然而,为了受益于宿主植物,吸收的Pi必须从探测土壤的真菌细胞转移到与宿主细胞紧密接触的细胞中。在外生菌根共生中,这些交流被认为发生在外生菌根内的“Hartig网”领域(Smith and Read,2008; ...

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