Abstract
Experiments were performed to examine the relationships between cytoplasmic streaming, translocation of 14C-labelled glucose, and colonization of non-nutrient substrates in Aspergillus niger van Tiegh., Pyronema domesticum (Sow.) Sacc, Sordaria fimicola (Rob.) Ces. & de Not., Cyathus stercoreus (Schw.) de T., and Rhizopus stolonifer (Ehrenb. ex Fr.) Vuill. Cytoplasmic streaming was not observed in A. niger though all species translocated relabelled glucose. Apart from S. fimicola all the fungi were able to both grow on, and on to, an agarose gel, and A. niger, P. domesticum and S. fimicola were able to grow onto the plastic surface of a Petri dish from an inoculum on malt agar. Colonization of a deficient medium probably represents the ability to support the growth of a fungus rather than indicating the presence of nutrient translocation. It is also proposed that translocation is independent of cytoplasmic streaming.
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