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Pipette 10-100 μl

Eppendorf Research ® plus,单通道,可变,盒,10-100μL,黄色

Company: Eppendorf
Catalog#: 3120000046
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A Quick Method for Screening Biocontrol Efficacy of Bacterial Isolates against Bacterial Wilt Pathogen Ralstonia solanacearum in Tomato
Author:
Date:
2020-11-20
[Abstract]  

Ralstonia solanacearum is a bacterial phytopathogen able to cause bacterial wilt disease in more than 200 plant species. Plant disease biocontrol strategies are used for controlling this disease and tomato is used as a model plant to conduct R. solanacearum associated studies. Conventional screening methods such as seed bacterization, soil drenching and root bacterization (in grown plants) to assess the ability of biocontrol bacteria to antagonize R. solanacearum under in planta conditions in different hosts are time-consuming and costly. A fast, cost effective method is a key requirement to advance the research on R. solanacearum biocontrol. In this protocol, we have inoculated the roots of tomato seedlings with bacterial isolates showing antagonistic activity against R. solanacearum

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[摘要]  [摘要]青枯雷尔氏菌是能够导致青枯病在超过2个细菌植物病原体00植物物种。植物病害生物防治策略用于控制这种疾病和番茄被用来作为模式植物进行青枯菌相关的研究。常规的筛选方法,例如种子杀菌,土壤浸湿和根部杀菌(在生长中的植物中),以评估生物控制细菌在不同宿主中在植物条件下拮抗青枯菌的能力,既耗时又昂贵。一个快速,经济有效的方法是推动研究的关键要求 青枯菌生物防治。在此协议中,我们已在细菌的分离株上接种了番茄幼苗的根,这些分离株在体外条件下显示出对茄青枯菌的拮抗活性。用拮抗细菌处理16小时后,通过成熟的根浸法将青枯菌接种到幼苗中。然后将幼苗保持在受控条件和枯萎/死苗的数目,记录最多10个天交ř 。青枯菌接种。从每个测试的分离物的记录计算生物防治效力。此协议是比在感测已经可用的协议的优点在于,它可以在很短的持续时间内完成(〜18天番茄)并且没有保持苗培养介质的需求。该方法可用于在短时间内以最小的成本快速筛选大量细菌分离株和不同宿主基因型。

[背景[ Ralstonia solanacearum ]是一种土壤传播的细菌性植物病原体,在200多个农作物中引起细菌性枯萎病,代表50个不同的科(Seleim等人,2014),其中大部分来自茄科(Thera等人,2010)。它可以在土壤中壮成长长达数年之久,并具有在寄主到达时感染的能力(Coutinho and ...

Real-time PCR Analysis of PAMP-induced Marker Gene Expression in Nicotiana benthamiana
Author:
Date:
2018-10-05
[Abstract]  Perception of pathogen-associated molecular patterns (PAMPs) often triggers various innate immune responses in plants. The transcriptional changes of defense-related genes are often used as a marker to assay PAMP-triggered plant immune response. Here we described a protocol to monitor the relative expression level of marker genes in Nicotiana benthamiana upon treatment with PAMPs. The procedure includes leaf treatment using PAMPs, total RNA isolation, cDNA synthesis, quantitative real-time PCR and data analysis. This protocol is applicable to monitor marker gene expression triggered by different PAMPs in N. benthamiana. [摘要]  对病原体相关分子模式(PAMP)的感知经常引发植物中的各种先天免疫应答。 防御相关基因的转录变化通常用作测定PAMP触发的植物免疫应答的标记。 在这里,我们描述了一种方案,用于监测用PAMP处理的本塞姆氏烟草中的标记基因的相对表达水平。 该方法包括使用PAMP进行叶处理,总RNA分离,cDNA合成,定量实时PCR和数据分析。 该协议适用于监测 N中不同PAMP触发的标记基因表达。本塞姆氏。
【背景】病原体相关的分子模式,即PAMP,是一类源自病原体的分子,在微生物中相对保守。多个PAMP,如flg22和XEG1(Felix et al。,1999; Ma et al。,2015),已被表征,可通过植物细胞表面定位模式检测 - 识别受体(PRR),从而诱导PAMP引发的免疫(Couto和Zipfel,2016)。 PAMP触发的主要反应之一是与防御相关的制造者基因的激活(Navarro et al。,2004; Zipfel et al。,2006)。 Nicotiana benthamiana 已被广泛用作模型植物,并且对多种PAMP敏感。在 N.宾夕法尼亚,先前发现了标记基因,如 NbCYP71D20 , NbACRE31 和 NbWRKY22 ,它们在PAMP处理后迅速活化( Heese et al。,2007; Segonzac et ...

Rapid Screening and Evaluation of Maize Seedling Resistance to Stalk Rot Caused by Fusarium spp.
Author:
Date:
2018-05-20
[Abstract]  Corn stalk rot caused by Fusarium spp., a genus of soil-borne fungal pathogens, has become a major concern of maize production. This disease normally causes significant reduction of maize yield and quality worldwide. The field assay for identifying stalk rot resistance using adult plants is largely relying on large population, yet time-consuming, labor costs, and often influenced by environmental conditions. Therefore, a rapid and reliable assay for investigating maize stalk rot caused by Fusarium spp. is required for screening the resistant lines and functional study of maize resistance to this pathogen. We have developed a seedling assay to rapidly screen the resistant lines using 12-day to 2-week-old seedlings. The entire assay can be completed within approximately ... [摘要]  由镰刀菌属(一种土壤真菌病原体)引起的玉米茎腐病已成为玉米生产的主要问题。这种疾病通常会导致全球玉米产量和质量的显着降低。使用成年植物鉴定茎腐病抗性的田间试验在很大程度上依赖于大量人群,但费时费力,并且通常受环境条件的影响。因此,用于快速可靠的检测由镰刀霉属引起的玉米茎腐病的检测。是筛选玉米对这种病原体的抗性品系和功能研究所必需的。我们开发了一种幼苗分析方法,用12天到2周龄的幼苗快速筛选抗性品系。整个测定可以在种子萌发后约16-18天内完成,其中廉价的劳动力成本和高重复性。这种简单,快速和可靠的检测方法可以广泛用于鉴定玉米对由镰刀霉引起的茎腐病的抗性。和其他类似的真菌病原体。

【背景】玉米是全球最重要的主粮作物和能源植物之一。自2012年以来,它已成为中国乃至全世界第一大产量和种植面积的作物品种。然而,玉米秸秆腐烂已成为最具破坏性的疾病之一,其通常导致玉米产量大幅下降和玉米质量下降(Oerke,2006)。引起玉米秸秆腐烂的病原体主要包括土壤真菌物种,例如禾谷镰刀菌F, (Verticillioides), ...

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