Journal
FOLIA HISTOCHEMICA ET CYTOBIOLOGICA
Volume 49, Issue 2, Pages 285-290Publisher
VIA MEDICA
DOI: 10.5603/FHC.2011.0040
Keywords
immunocytochemistry; electron microscopy; taxol; Ruthenium Red; hexamine
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Funding
- University of Lodz [506/820]
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Lipotubuloids, structures containing lipid bodies and microtubules, are described in ovary epidermal cells of Ornithogalum umbellatum. Microtubules of lipotubuloids can be fixed in electron microscope fixative containing only buffered OsO4 or in glutaraldehyde with OsO4 post-fixation, or in a mixture of OsO4 and glutaraldehyde [1]. None of these substances fixes cortical microtubules of ovary epidermis of this plant which is characterized by dynamic longitudinal growth. However, cortical microtubules can be fixed with cold methanol according immunocytological methods with the use of beta-tubulin antibodies and fluorescein. The existence of cortical microtubules has also been evidenced by EM observations solely after the use of taxol, microtubule stabilizer, and fixation in a glutaraldehyde/OsO4 mixture. These microtubules mostly lie transversely, sometimes obliquely, and rarely parallel to the cell axis. Staining, using Ruthenium Red and silver hexamine, has revealed that lipotubuloid microtubules surface is covered with polysaccharides. The presumption has been made that the presence of a polysaccharide layer enhances the stability of lipotubuloid microtubules. (Folia Histochemica et Cytobiologica 2011, Vol. 49, No. 2, 285-290)
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