An Ultrastructural Comparison of Euglena gracilis Klebs, Bleached Euglena and Astasia longa Pringsheim |
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| Authors: | TOM D ROGERS VERNON E SCHOLES H E SCHLICHTING |
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| Institution: | Dept. of Biological Sciences, North Texas State Univ., Denton, Tex. 76203;Dept. of Botany, North Carolina State Univ., Raleigh, N. C. 27607 |
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| Abstract: | SYNOPSIS. Some of the cytologic features of Euglena gracilis Klebs, Euglena gracilis var. bacillaris Gross (colorless), and Astasia longa Pringsheim were compared in an electron-microscope study. E. gracilis was readily differentiated from the colorless forms by the presence of chloroplasts. The 2 colorless forms were structurally similar; however, it was possible to differentiate bleached Euglena from Astasia longa by the presence of irregular plate-like aggregates of paramylum in the former; similar forms of paramylum were not seen in chloroplast-containing E. gracilis or in A. longa . |
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