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Cell division in the marine slime mold,Labyrinthula sp., and the role of the bothrosome in extracellular membrane production

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Summary

Electron microscopic observations of vegetative cell division inLabyrinthula indicate that the specialized invaginations of the cell surface called bothrosomes arisede novo between newly divided daughter cells and function in the production of the membrane-bound extracellular matrix or slimeways. Protocentrioles are formed before each division and persist through cell separation but are not found in interphase cells. Cytokinesis begins after the completion of mitosis and occurs by vesicle accumulation and fusion, an unusual cytokinetic mechanism reminiscent of zoospore cleavage. Cell elongation after cytokinesis is accompanied by elongation of the Golgi apparatus and the appearance of non-spindle microtubules.

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  1. David Porter

    Present address: Department of Botany, University of Georgia, Athens, Georgia, USA

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    Porter, D. Cell division in the marine slime mold,Labyrinthula sp., and the role of the bothrosome in extracellular membrane production. Protoplasma 74, 427–448 (1972). https://doi.org/10.1007/BF01281960

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