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Formaldehyde Solution

Company: Wako Pure Chemical Industries
Catalog#: 061-00416
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Micro-computed Tomography to Visualize Vascular Networks in Maize Stems
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2018-01-05
[Abstract]  Plant vascular systems in the stem connect roots with aerial organs to move solutes containing minerals, nutrients as well as signaling molecules, and therefore, they play pivotal roles in plant growth and development. However, stem vascular systems, especially in crop species, have been poorly described since they are deeply embedded in the tissue. Here we describe a protocol to utilize micro-computed tomography (micro-CT) scanning to visualize vascular networks in the maize stem. The protocol covers sample fixation and staining with contrasting reagents, data acquisition using micro-CT, reconstructing three-dimensional (3D) models of stem inner structures and extraction of vascular networks from the model. This protocol can be easily applied to various types of species and ... [摘要]  茎中的植物血管系统与空中器官连接根部以移动含有矿物质,营养素和信号分子的溶质,因此它们在植物生长和发育中起关键作用。 然而,由于它们深深地嵌入组织中,所以干燥的血管系统,特别是在作物种类中,描述得很差。 在这里我们描述一个协议,利用微型计算机断层扫描(微CT)扫描可视化玉米茎中的血管网络。 该协议涵盖样品固定和对比试剂染色,数据采集使用显微CT,重建三维(3D)模型的茎内部结构和提取血管网络模型。 该协议可以很容易地适用于各种类型的物种和器官/组织。

【背景】单子叶茎具有独特和独立的静脉的特征性血管网络。尽管支持生长发育的重要性,但单子叶植物的血管网络模式研究甚少。干血管网络的可视化是相当具有挑战性的,因为静脉深深地嵌入组织中。常规的组织切片可以用来观察网络,但是这是一个费时费力的过程,需要观察数百个部分。此外,作物茎的尺寸比显微镜下的视野大得多,因此很难捕捉整个系统。

最近,我们报道了玉米转录因子BEL1样同源异形体(BLH)12和BLH14在茎发育和静脉网络形成中起重要作用(Tsuda等人,2017)。为了全面了解血管系统,我们采用了先前描述的微型CT扫描并针对玉米茎杆进行了优化(Metscher,2009a和2009b,Degenhardt等人,2010,Staedler< et al。,2013,Gignac ...

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