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Osmium tetroxide aqueous solution (4%)

四氧化四锇溶液

Company: Electron Microscopy Sciences
Catalog#: 19150
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Histochemical Preparations to Depict the Structure of Cauliflower Leaf Hydathodes
Author:
Date:
2017-10-20
[Abstract]  Hydathodes are plant organs present on leaf margins of a wide range of vascular plants and are the sites of guttation. Both anatomy and physiology of hydathodes are poorly documented. We have recently reported on the anatomy of cauliflower and Arabidopsis thaliana hydathodes and on their infection by the vascular pathogenic bacterium Xanthomonas campestris pv. campestris (Xcc) (Cerutti et al., 2017). Because hydathodes are natural infection routes for several pathogens, it is necessary to have a deep knowledge of their anatomy to further better interpret images of infected hydathodes. Here, we described different detailed protocols for gaining information on hydathode anatomy which are applicable to a wide range of plants (including monocots ... [摘要]  水溶性植物是存在于各种维管植物的叶缘上的植物器官,是排列的位置。水解的解剖学和生理学都很少被证明。我们最近报道了花椰菜和拟南芥水解的解剖结构及其血管病原菌黄单胞菌(Xanthomonas campestris)pv的感染。 Cerutti等人,2017)。由于水阴是多种病原体的自然感染途径,因此需要对其解剖学有深入的了解,以进一步更好地解释受感染水合物的图像。在这里,我们描述了不同的详细方案,以获得适用于广泛植物(包括单子叶植物如大麦和水稻)的水溶性解剖学信息。用Nomarsky和共焦显微镜观察澄清的厚样品。透射光和透射电子显微镜中的光学显微镜用于观察薄和超薄切片。
【背景】在文献中,使用不同的技术来研究水溶性(Perrin,1972; Chen and Chen,2007; Wang等人,2011; Singh,2014)。 从光学显微镜(在整个组织或树脂嵌入样品的部分)到扫描或透射电子显微镜,可以使用大型方案和技术。 据我们所知,这些技术并不被组合使用,激光共焦显微镜从未用于描绘水溶性结构。 此外,我们注意到从协议到协议的变化。 我们在这里介绍了组合使用的不同技术。 它们适合花椰菜和拟南芥(Arabidopsis thaliana)。 它们已成功应用于其他植物,如单子叶植物(大麦和大米),应适用于各种植物物种。 ...

Transmission Electron Microscopy of Centrioles, Basal Bodies and Flagella in Motile Male Gametes of Land Plants
Author:
Date:
2017-10-05
[Abstract]  Motile male gametes (spermatozoids) of land plants are coiled and contain a modified and precisely organized complement of organelles that includes a locomotory apparatus with two to thousands of flagella. Each flagellum is generated from a basal body that originates de novo as a centriole in spermatogenous cell lineages. Much of what is known about the diversity of plant male gametes was derived from detailed transmission electron microscopic studies. Because the process of spermatogenesis results in complete transformation of the shape and organization of these cells, TEM studies have yielded a wealth of information on cellular differentiation. Because green algal progenitor groups contain centrioles and a variety of motile cells, land plant spermatozoids also provide a ... [摘要]  土地植物的运动雄性配子(精子)卷曲,并含有修改和精确组织的细胞器的补体,其包括具有两至数千个鞭毛的运动器官。每个鞭毛都是从起源于新生细胞的基底体产生的,作为精子细胞谱系中的中心粒。关于植物雄性配子多样性的许多知识来自详细的透射电子显微镜研究。由于精子发生过程导致这些细胞的形状和组织的完全转化,TEM研究已经产生了关于细胞分化的大量信息。由于绿藻藻类祖细胞含有中心粒和各种运动细胞,所以土地植物精子也提供了大量的机会来检验土地殖民时期的中心粒和运动器具的演化和最终的损失。
在这里,我们简要概述了我们在过去20年进行的研究和方法,不仅阐明了这些细胞的结构多样性,而且阐明了微管组织中心的发展。 >中心粒的起源和结构复杂的运动细胞的个体发育。
【背景】土地植物的运动配子是非常多样化的,通过涉及重新定位和重塑细胞组分以及组装复杂运动器官的变革来发展(Renzaglia和Garbary,2001; Lopez和Renzaglia,2008)。由于细胞壁施加的限制,细胞和鞭毛的伸长在几乎球形的空间周围,导致成熟配子的盘绕构型(Renzaglia和Garbary,2001; Lopez和Renzaglia,2014)。卷取程度从每个单元只有一到多到十转。每个配子的鞭毛数量甚至更为可变,从苔藓植物(苔藓植物, ...

Scanning Electron Microscopy of Motile Male Gametes of Land Plants
Author:
Date:
2017-10-05
[Abstract]  The only motile cells produced in land plants are male gametes (spermatozoids), which are reduced to non-flagellated cells in flowering plants and most gymnosperms. Although a coiled architecture is universal, the complexity of land plant flagellated cells varies from biflagellated in bryophytes to thousands of flagella per gametes in the seed plants Ginkgo and cycads. This wide diversity in number of flagella is associated with vast differences in cell size and shape. Scanning electron microscopy (SEM) has played an important role in characterizing the external form, including cell shape and arrangement of flagella, across the varied motile gametes of land plants. Because of the size and scarcity of released swimming sperm, it is difficult to concentrate them and prepare them ... [摘要]  在陆地植物中生产的唯一的活细胞是雄性配子(精子),它们在开花植物和大多数裸子植物中被还原成非鞭毛细胞。 虽然盘绕的建筑是普遍的,但是种植植物鞭毛细胞的复杂性在种子植物银杏和苏铁中每个配子的苔藓植物双歧杆菌数量增加到成千上万的鞭毛。 鞭毛数量的多样性与细胞大小和形状的巨大差异有关。 扫描电子显微镜(SEM)在表征陆地植物各种动态配子的外形形态,包括鞭毛的细胞形态和排列方面发挥了重要作用。 由于释放游泳精子的大小和稀缺性,难以集中精力并准备在SEM中观察。 在这里,我们详细介绍了SEM制备技术,可以在植物组中产生精子细胞的良好保存。
【背景】土地植物的运动配子是非常多样化的,通过涉及重新定位细胞组分和组装复杂运动器官的转化来发展(Renzaglia和Garbary,2001)。由于细胞壁施加的限制,细胞和鞭毛的伸长在几乎球形的空间周围,导致成熟配子的盘绕构型。卷取程度从每个单元只有一到多到十转。每个配子的鞭毛数量甚至更多变化,从苔藓植物(苔藓,>随着银杏和苏铁的多样化,剩余的利用花粉管将非活动精子输送到卵细胞的种子植物中,基底体和鞭毛的所有残留都丢失(Southworth and Cresti,1997)。男性配子提供了丰富的生物学信息,包括生物多样性和细胞分化和进化(Garbary et al。,1993; Renzaglia et al。,1995; Renzaglia ...

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