Summary
Zoospore formation in sporangia ofPhytophthora infestans, the causal agent of potatoes downy mildew disease, was influenced by reduction of oxygen tension, by application of a respiratory poison (KCN), and by an inhibitor of cytokinesis (cytochalasine B). As demonstrated by different methods of light microscopy, in all three cases the percentage of morphologically abnormal, multinucleate, multiflagellate cells increased. High concentrations of KCN caused a complete inhibition of zoospore formation. These effects are interpreted as disorders of the process of cytokinesis during zoosporogenesis.
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Oertel, B., Jelke, E. Formation of multinucleate zoospores inPhytophthora infestans (Mont.) De Bary (Oomycetes, Pythiaceae). Protoplasma 135, 173–179 (1986). https://doi.org/10.1007/BF01277011
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DOI: https://doi.org/10.1007/BF01277011