Abstract
Bristles radiating from openings were detected on colonies and unicells ofScenedesmus culture N 46, when examined with transmission and scanning electron microscopes. Although narrower, they correspond in gross appearance and ultrastructure to previously describedScenedesmus bristles. Openings, bordered by a series of props, are unlike those ofScenedesmus culture 614. Additional props are observed scattered independently on the cell wall; ridges are composed of a linear row of props.
Sections of cells, or cell walls, reveal an additional prop, situated inside the openings; these props are composed of several tubules. Possible extrusion of bristles through these tubules, as well as the origin of the bristle from the cavity and vesicles immediately under the opening are discussed.
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Massalski, A., Trainor, F.R. & Shubert, E. Wall ultrastructure ofScenedesmus culture N 46. Arch. Microbiol. 96, 145–153 (1974). https://doi.org/10.1007/BF00590171
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DOI: https://doi.org/10.1007/BF00590171