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Ultra-microtome

Company: Leica
Catalog#: Leica EM UC7i
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Using Light and Electron Microscopy to Estimate Structural Variation in Thylakoid Membranes
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2017-12-05
[Abstract]  The shapes of chloroplasts and the architectures of internal thylakoid membranes are altered by growth and environmental changes (Lichtenthaler et al., 1981; Kutik, 1985; Terashima and Hikosaka, 1995). These morphological alterations proceed via transitional intermediates, during which dynamic and heterogeneous thylakoid membranes are observed in cells (Nozue et al., 2017). Light microscopy is useful for the detection of morphological differences in chloroplasts. The thylakoid architecture of such morphologically variable chloroplasts is confirmed by transmission electron microscopy (TEM). The method of monitoring structural variation by light microscopy in combination with electron microscopy is described. [摘要]  叶绿体的形状和内部类囊体膜的结构被生长和环境变化所改变(Lichtenthaler等,1981; Kutik,1985; Terashima和Hikosaka,1995)。 这些形态改变经由过渡中间体进行,在此期间在细胞中观察到动态和非均匀的类囊体膜(Nozue等人,2017)。 光学显微镜可用于检测叶绿体中的形态差异。 透射电子显微镜(TEM)证实了这种形态变化的叶绿体的类囊体结构。 描述了用光学显微镜结合电子显微镜监测结构变化的方法。
【背景】已经提出了超结构形态学与类囊体膜中的光合作用和代谢途径的功能性偶联(Oswald等人,2001)。 这是由类囊体膜在叶成熟期间和从营养期向开花生长期转变期间的异质性支持的。 形态改变有一定的时间滞后(Nozue等人,2017)。 类囊体膜的重排与叶绿体形状的变化同时发生,叶绿体的形状从具有典型的细长透镜状外观变为通过光学显微镜可识别的肿胀外观。

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