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Immunoelectron microscopy of chemically fixed developing plant embryos
Tetsuaki Osafune1, Steven D Schwartzbach
1Department of Life Science, Nippon Sport Science University, Yokohama, Japan.
Methods in Molecular Biology (Clifton, N.J.)
|July 6, 2010
Summary
This study presents a novel vacuum infiltration method for plant tissue preparation, overcoming challenges in ultrastructure preservation and sectioning for electron microscopy. This technique ensures high-quality ultrathin sections suitable for immunolabeling in diverse plant tissues.
Area of Science:
- Plant Biology
- Microscopy Techniques
- Cell Biology
Background:
- Plant tissues present unique challenges for electron microscopy due to hydrophobic cell walls, acidic vacuoles, and intercellular airspaces.
- Standard fixation and embedding methods often fail to preserve ultrastructure and allow for sectioning of plant specimens.
- Overcoming these obstacles is crucial for detailed ultrastructural analysis and immunolocalization studies in plants.
Purpose of the Study:
- To describe modified fixation and embedding procedures for improved ultrastructure preservation and sectioning of plant tissues.
- To present a vacuum infiltration technique that addresses specific challenges in plant specimen preparation.
- To enable high-quality ultrathin sectioning suitable for electron microscopy and immunolabeling.
Main Methods:
- Vacuum infiltration was employed to rapidly remove intercellular air, replacing it with fixative and buffer.
- This method neutralized acidic vacuoles, preserving cellular ultrastructure.
- Vacuum infiltration of embedding resin ensured uniform permeation for intact, stable ultrathin sections.
Main Results:
- The modified procedure successfully overcame obstacles related to hydrophobic cell walls, acidic vacuoles, and intercellular airspaces.
- Intact ultrathin sections were produced, exhibiting stability under the electron beam.
- The method proved suitable for immunolabeling applications.
Conclusions:
- The described vacuum infiltration technique significantly enhances plant specimen preparation for electron microscopy.
- This methodology is applicable to a wide range of plant tissues, including developing fruits.
- The improved preservation and sectioning facilitate detailed ultrastructural and immunolocalization studies in plant science.
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