Rhizomorph structures confirm the relationship between Lycoperdales and Agaricaceae (Hymenomycetes, Basidiomycota)
Abstract:Rhizomorphs provide systematically important traits. Therefore, in the present study the rhizomorph features of some species of (a) the gastroid genera Bovista, Handkea, and Lycoperdon, (b) the agaricoid genera Agaricus, Leucoagaricus, Leucocoprinus, Lepiota, Macrolepiota, and (c) the secotioid genus Podaxis were studied to test the molecular biological hypothesis of a systematical relationship between these genera. All genera revealed an agaricoid type of rhizomorph with very long, almost non-septate, thick-walled, dextrinoid emanating hyphae. Only Agaricus bisporus differed in this respect. In this species, the very long emanating hyphae are not thick-walled or dextrinoid. These differences can either be ascribed to the different habitat of A. bisporus in comparison to A. abruptibulbus, or are perhaps a consequence of their affiliation to different sections within this genus. It is concluded that rhizomorph structures confirm the results of DNA-sequence analyses that have already pointed out a relationship between Agaricus, Handkea, Lycoperdon, and Macrolepiota.
Document Type: Research Article
Publication date: 2002-11-01
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- Nova Hedwigia is an international journal publishing original, peer-reviewed papers on current issues of taxonomy, morphology, ultrastructure and ecology of all groups of cryptogamic plants, including cyanophytes/cyanobacteria and fungi. The half-tone plates in Nova Hedwigia are known for their high quality, which makes them especially suitable for the reproduction of photomicrographs and scanning and transmission electron micrographs.
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