Idioblastic mucilage cells in Teucrium polium leaf. Anatomy and histochemistry

  • Artemios M. Bosabalidis Department of Botany, School of Biology, Aristotle University, Thessaloniki 54124, Greece
DOI: https://doi.org/10.5281/zenodo.161003

Abstract

In the mesophyll of Teucrium polium L. leaves, isolated or grouped idioblastic secretory cells occur in contact with the distal (adaxial) vessel elements of the vascular bundles. They appear to originate from one or more bundle sheath cells and their intracellular space is entirely occupied by the secretory material. The latter has a glycoproteinaceous constitution (mucilage), as histochemical tests showed. Idioblastic cells, therefore, correspond to typical mucilage cells. Mucilage seems to play a crucial role in the adaptation of the plant to unfavourable environmental conditions.

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Fig. 2. A – Paradermal section of the leaf at the level of location of the mucilage idioblasts (asterisks). Note the association of the idioblasts with the vascular bundles (longitudinally cut). Isolated (B) and grouped (C) idioblastic mucilage cells in touch with vascular bundles. D-F – Idioblastic cells treated with Sudan Black B for lipids (D), with PAS for polysaccharides (E), and with Coomassie Brilliant Blue for proteins (F). With Sudan Black B, the content of the idioblasts remained unstained (no presence of lipids), with PAS it stained pink (presence of polysaccharides), and with Coomassie Brilliant Blue it stained light blue (presence of proteins). The content, therefore, corresponds to glycoprotein (mucilage). Scale bars in μm.
Published
2014-04-01
How to Cite
BOSABALIDIS, Artemios M.. Idioblastic mucilage cells in Teucrium polium leaf. Anatomy and histochemistry. Modern Phytomorphology, [S.l.], v. 5, p. 49-52, apr. 2014. ISSN 2227-9555. Available at: <http://ojs.phytomorphology.org/index.php/MP/article/view/192>. Date accessed: 11 apr. 2018. doi: https://doi.org/10.5281/zenodo.161003.
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Vol 5 (2014)
Section
Research Articles
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