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Iron (II) sulfate heptahydrate, FeSO4·7H2O

公司名称: Sigma-Aldrich
产品编号: F8263
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Efficient Agrobacterium-mediated Transformation of the Elite–Indica Rice Variety Komboka
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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 ... [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 ...

Exopolysaccharide Quantification for the Plant Pathogen Ralstonia solanacearum
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Date:
2017-05-20
[Abstract]  Soluble exopolysaccharide is a major virulence factor produced by the plant pathogen Ralstonia solanacearum. Its massive production during plant infection is associated with the arrest of water flow in xylem vessels leading eventually to plant death. The composition of this heavy macromolecule includes mainly N-acetylgalactosamine. Here we describe a colorimetric method for quantitative determination of the soluble exopolysaccharide present in culture supernatant of R. solanacearum. [摘要]  可溶性外多糖是由植物病原体Ralstonia solanacearum产生的主要毒力因子。植物感染期间的大量生产与木质部血管中的水流停滞有关,最终导致植物死亡。该重大分子的组成主要包括N-乙酰半乳糖胺。这里我们描述了用于定量测定R中培养上清液中可溶性外多糖的比色法。雷尔氏菌。

背景 植物病原体罗勒氏菌(Ralstonia solanacearum)在群体感应系统的控制下产生胞外多糖,即高细胞密度,高于5×10 7细胞ml -1 (Flavier等人,1997)。外多糖的糖含量包括比例为10:2.5:1的半乳糖胺,葡萄糖和鼠李糖(Drigues等人,1985)。 Brumbley和Denny(1990)最初开发了用于从培养上清液中可靠地提取和定量外多糖的方案,并且最近由Peyraud等人(2016)更新。定量基于使用适应的Elson和Morgan测定法测定大分子的己糖胺含量(Elson和Morgan,1933; Gatt和Berman,1966)。含有N-乙酰基-D-半乳糖胺的外多糖由不同的革兰氏阴性或革兰氏阳性细菌(Vaningelgem等人,2004; Balzaretti等人,2017)产生,以及一些真菌(Lee等人,2015),因此该方案也可适用于这些生物。

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