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Saprochaete saccharophila: Ultrastructure, X-Ray Diffraction and Chitin Assay of Cell Wall as Aids in Evaluating Taxonomic Position

Clinton J. Dawes
Transactions of the American Microscopical Society
Vol. 88, No. 4 (Oct., 1969), pp. 572-581
Published by: Wiley on behalf of American Microscopical Society
DOI: 10.2307/3224250
Stable URL: http://www.jstor.org/stable/3224250
Page Count: 10
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Saprochaete saccharophila: Ultrastructure, X-Ray Diffraction and Chitin Assay of Cell Wall as Aids in Evaluating Taxonomic Position
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Abstract

The cytology of a supposed "colorless green alga" Saprochaete saccharophila Coker and Shanor was studied using light and electron microscopes, X-ray diffraction, microchemical tests (I2KI, Sudan IV, Ruthenium red, I2KI-80% H2SO4, Bauers stain, Bethe's stain, Gilson's stain), and a biochemical assay using chitinase. The cell structure is eukaryotic and very similar to that of fungal cells, containing mitochondria, nuclei, lipid bodies, endoplasmic reticulum, and microtubules. In addition, lomasome-like vesicles were found between the plasmalemma and the cell wall. The cell wall contains microfibrils arranged parallel to the filament axis and small peg-like projections. X-ray diffraction and the biochemical assay with chitinase indicated the presence of chitin. Based on the above tests, the conclusion is that this organism is probably a fungus.

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