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Agarose type I, low EEO

琼脂糖

Company: Sigma-Aldrich
Catalog#: A6013
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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 ...

Imaging Thick Lymph Node Tissue Sections
Author:
Date:
2016-09-20
[Abstract]  Our protocol describes a simple procedure for imaging thick lymph node sections by 2-photon microscopy. Lymph nodes are sectioned using a vibratome (vibrating microtome) to produce slices of tissue that can then be stained with fluorescently labeled antibodies. The thick tissue sections (150-200 μm depth) allow for the detection of cell clustering that is typically under-represented in thin sections (10-20 μm) used for conventional confocal microscopy. Application of 2-photon microscopy facilitates imaging through the thick volume of the vibratome sections. In combination with automated image processing software, a thick lymph node cross-section image also facilitates quantitation of cellular events within a relatively large area of the tissue, thus providing a clearer picture on the ... [摘要]  我们的协议描述了一个简单的程序,通过双光子显微镜成像厚淋巴结切片。 使用vibratome(振动切片机)切割淋巴结以产生组织切片,然后可用荧光标记的抗体染色。 厚组织切片(150-200μm深度)允许检测细胞聚集,其通常在用于常规共聚焦显微镜的薄切片(10-20μm)中表现不足。 双光子显微镜的应用有利于成像通过厚的体积的vibratome部分。 与自动图像处理软件组合,厚的淋巴结横截面图像还有助于在组织的相对大的区域内的细胞事件的定量,从而提供关于感兴趣的细胞事件的空间分布的更清晰的图像(例如 。,T细胞聚类)。 该方法也可以容易地应用于其它组织,例如脾或皮肤。

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