Summary
Although the plasmodial stage of the MyxomycetePhysarum polycephalum was unaffected with 200 μM taxol, the amoebal stage was sensitive to 10 μM taxol. The first effect of taxol resulted in an accumulation of cells blocked as a monopolar centrosphere surrounded by condensed chromosomes. In 79% of cases these monoasters contained two pairs of centrioles. The mitotic block in a monopolar stage in the presence of taxol delayed the occurrence of late mitotic events such as chromosome decondensation and formation of the nuclear envelope. Escape from the monopolar centrosphere stage and formation of multinucleated amoebae involved a transient monopolar reconstruction stage in which a long microtubular bundle interacted with a small chromosomal mass outside the monoaster.
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Wright, M., Moisand, A. & Oustrin, M.L. Stabilization of monoasters by taxol in the amoebae ofPhysarum polycephalum (Myxomycetes) . Protoplasma 113, 44–56 (1982). https://doi.org/10.1007/BF01283038
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DOI: https://doi.org/10.1007/BF01283038