Tyrannosorus pinicola
| Tyrannosorus pinicola | |
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| Genus: | Tyrannosorus Untereiner & Malloch
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| Type species | |
| Tyrannosorus pinicola (Petrini & P.J. Fisher) Unter. & Malloch
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Tyrannosorus is a genus of fungi in the class Dothideomycetes. The relationship of this taxon to other taxa within the class is unknown (incertae sedis).[1] A monotypic genus, it contains the single species Tyrannosorus pinicola. The genus was first formally described by Untereiner & Malloch,[1] although the species was previously described by others. It takes its name, meaning "despotic heap", from its ascomata, which have long and sharp spines, presumably to deter small animals.[2]
T. pinicola's anamorph was previously falsely described as a member of the Helicodendron genus due to its helical conidia, which coiled 5-6 times, or less so in older cultures.[2] T. pinicola may have convergently evolved similar spore morphology to Helicodendron due to occupying an aero-aquatic niche,[3] where the helicoid spores trap an air pocket that enables flotation of spores in aquatic environments.
Description
T. pinicola's ascomata are dark-brown to black, and occur solitarily. The ascomata are between pear-shaped (pyriform) and egg-shaped (ovate). They have ostioles and sharp-pointed setae, which give the genus Tyrannosorus its name. The asci are enclosed in a double wall (bitunicate), the inner of which is thickened, and taper towards the base. The ascospores come in pairs of cells and are brown with indistinct striae.
See also
References
- ^ a b Lumbsch TH, Huhndorf SM. (December 2007). "Outline of Ascomycota – 2007". Myconet. 13. Chicago, USA: The Field Museum, Department of Botany: 1–58.
- ^ a b Untereiner, Wendy A.; Straus, Neil A.; Malloch, David (1995-08-01). "A molecular-morphotaxonomic approach to the systematics of the Herpotrichiellaceae and allied black yeasts". Mycological Research. 99 (8): 897–913. doi:10.1016/S0953-7562(09)80748-X. ISSN 0953-7562.
- ^ Yamaguchi, Kaoru (September 2023). "Recent studies on aero-aquatic fungi, with special reference to diversity of conidial morphology and convergent evolution". Mycoscience. 64 (5): 128–135. doi:10.47371/mycosci.2023.09.001. PMC 11367248.
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