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Sodium molybdate dihydrate (Na2MoO4·2H2O)

Company: Sigma
Catalog#: 331058
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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 ...

In vivo Quantification of Alkanes in Escherichia coli
Author:
Date:
2020-04-20
[Abstract]  Microbial production of alkanes employing synthetic biology tools has gained tremendous attention owing to the high energy density and similarity of alkanes to existing petroleum fuels. One of the most commonly studied pathways includes the production of alkanes by AAR (acyl-ACP (acyl carrier protein) reductase)-ADO (aldehyde deformylating oxygenase) pathway. Here, the intermediates of fatty acid synthesis pathway are used as substrate by the AAR enzyme to make fatty aldehyde, which is then deformylated by ADO to make linear chain alkane. However, the variation in substrate availability to the first enzyme of the pathway, i.e., AAR, via fatty acid synthesis pathway and low turnover of the ADO enzyme make calculation of yields and titers under in vivo conditions extremely ... [摘要]  [摘要] 由于烷烃的高能量密度和与现有石油燃料的相似性,使用合成生物学工具生产烷烃的微生物受到了广泛关注。最常研究的途径之一是通过AAR(酰基-ACP (酰基)载体蛋白)还原酶)-ADO(醛Deformylating 加氧酶)途径。在这里,中间体脂肪酸合成途径被用作基材由AAR Enzym E要使脂肪醛,然后是Deformylated 通过ADO,使线性链烷烃。但是,即该途径的第一种酶的底物利用率的变化,即,AAR,通过脂肪酸合成途径和ADO酶的低周转率,使得在体内条件下的产量和效价的计算极为困难。在体内测定中,将确定的ADO酶底物外加到培养基中有助于监测菌体的流入。因此,该底物提供了更准确的产物收率测量方法。在此方案中,我们包括用于实施体内测定法以监测大肠杆菌中烷烃生产的详细指南。

[背景] 利用工程微生物生产烷烃的研究已广受欢迎,因为它提供了一种有吸引力的替代方案,可减少对化石燃料的依赖,同时减轻气候变化的影响(Lee 等,2008;Knothe ,2010; Lu,2010; Schirmer 等。人,2010;谭等人。,2011)各种途径已被发现或人工Assemb ...

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