Abstract
A chemotropic attraction and fusion of hyphae to spores commonly occurs in Schizophyllum commune growing on an agar medium. Basidiospores placed on a permeable membrane over a hyphal colony cause an attraction, aggregation and proliferation of hyphae below the spore. Hyphal tips grow toward a spore from a distance of 15 ,m. The attractant is water soluble. Once a hypha-spore fusion occurs other hyphae are not attracted to the spore. Spores without mycelium nearby fail to produce the attractant, which suggests a two-way communication system where a spore will not produce/release its attractant without first being stimulated to do so by the hyphae. Non-viable basidiospores and viable conidia of Fusarium oxysporum failed to attract the hyphae.
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