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Bacto yeast extract

Company: Fischer Scientific
Catalog#: 212750
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A High-throughput Interbacterial Competition Platform
Author:
Date:
2020-09-05
[Abstract]  Contact-dependent interbacterial competition is a common strategy used by bacteria to fight for their ecological niches. Interbacterial competition is monitored by a competition assay involving co-culturing the attacker and the recipient bacterial cells on agar, followed by recovery of the surviving recipient cells. Conventional interbacterial competition assays rely on serial dilution, plate spreading, and colony counting experiments for the readout. The high demand for time and labor in a competition assay limits its use for large-scale screening. However, a high-throughput interbacterial competition screening method is required to screen genetic factors involved in an interbacterial competition. Here, using Agrobacterium tumefaciens as an attacker and Escherichia coli ... [摘要]  [摘要 ] 接触依赖性细菌间竞争是细菌争夺生态位的一种常用策略。通过竞争测定法监测细菌间竞争,该竞争测定法包括在琼脂上共同培养攻击者和受体细菌细胞,然后回收存活的受体细胞。常规的细菌竞争分析需要依靠连续稀释,平板铺展和菌落计数实验来进行读数。竞争测定中对时间和劳力的高需求限制了其在大规模筛选中的用途。然而,需要高通量的细菌间竞争筛选方法来筛选参与细菌间竞争的遗传因素。在这里,使用根癌土壤杆菌作为攻击者, 作为大肠埃希菌,我们开发了一种功能强大,快速,高效和高通量的VI型分泌系统依赖性细菌竞争筛选平台。该系统无需进行连续稀释和铺板即可进行96种同时竞争分析。该系统的数据分析仅依赖于直接和直接的菌落计数。该平台可以很容易地用于识别参与任何依赖接触的细菌竞争系统的新因素。

[背景 ] 细菌已经进化出多种策略来对抗其他细菌以获取生态位适应性,而接触依赖性细菌间竞争是广泛使用的策略之一(Granato 等人,2019)。细菌可以使用其I型(T1SS),IV型(T4SS),V型(T5SS),VI型(T6SS)或VII型(T7SS)分泌系统将蛋白毒素输送到其竞争细胞,受体细胞,并以接触依赖的方式杀死它(Aoki 等人,2005; Hood 等人,2010; Souza 等人,2015; Cao 等人,2016;García-Bayona ...

Efficient Agrobacterium-mediated Transformation of the Elite–Indica Rice Variety Komboka
Author:
Date:
2020-09-05
[Abstract]  Genetic transformation is crucial for both investigating gene functions and for engineering of crops to introduce new traits. Rice (Oryza sativa L.) is an important model in plant research, since it is the staple food for more than half of the world’s population. As a result, numerous transformation methods have been developed for both indica and japonica rice. Since breeders continuously develop new rice varieties, transformation protocols have to be adapted for each new variety. Here we provide an optimized transformation protocol with detailed tips and tricks for a new African variety Komboka using immature embryos. In Komboka, we obtained an apparent transformation rate of up to 48% for GUS/GFP reporter gene constructs using this optimized protocol. This ... [摘要]  
[摘要 ] 遗传转化对于研究基因功能和农作物工程引入新性状均至关重要。水稻(Oryza sativa L.)是植物研究中的重要模型,因为它是世界一半以上人口的主食。其结果是,大量的转化方法已经开发了两个籼稻和粳稻米。由于育种者不断开发新的水稻品种,因此必须针对每个新品种适应转化方案。在这里,我们为使用未成熟胚的非洲新品种Komboka 提供了一种优化的转化协议,包括详细的技巧和窍门。在Komboka中,我们使用此优化方案对GUS / GFP报告基因构建体的表观转化率高达48%。该协议也适用于其他优质lite 稻品种。


[背景 ] 为植物的遗传转化的各种方法公顷一直在开发,例如穿孔(Shimamoto PEG介导的原生质体转染。等人,1989;达塔。等人,1992),生物射弹转化(Christou的等人,1991)和农杆菌-介导的转化(Slamet-Loedin 等,2014)。农杆菌介导的转化是将DNA引入植物的最广泛使用的方法之一(van Wordragen and Dons,1992)。该方法已被广泛用于研究,并已成为生物技术的关键先决条件。自从开发新的育种技术(如基因组编辑)以来,它就变得越来越重要(Char ...

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