Scolecobasidium burgersense

Ascomycota, Pezizomycotina, Venturiales, Sympoventuriaceae. Genus: SCOLECOBASIDIUM

Scolecobasidium burgersense Janse et al.

Colony characteristics

Colonies (MEA, 3 wk, 24°C) restricted, reaching 2.8 cm, dark brownish to black at the center and lighter at the periphery, zonate, woolly, flat; reverse black. Particularly on OA a reddish brown to black pigment is exuded into the agar.

Microscopy

Hyphae hyaline to pale brown, thick-walled, smooth or verruculose. Conidiophores 5-9 × 1.5-2.5 μm, poorly differentiated, mostly unbranched, brown, thick-walled, solitary, erect, cylindrical, producing few conidia sympodially on denticles of 1-2 μm in length. Conidia 6.5-9.5 × 2-3 μm, solitary or in small clusters, 2-celled, pigmented or hyaline, thick-walled, smooth or verruculose, ovoidal, broadly clavate or ellipsoidal. Sexual state unknown.

Pathogenicity

RG-1, BSL-1. The species was described infecting bony fish (Threespot angelfish, Apolemichtys trimaculatus) in a public seawater aquarium (Janse et al., 2024).

Nomenclature

Scolecobasidium burgersense Janse, de Hoog, S.A. Ahmed & van der Lee, in Janse, de Hoog, Klerks, van Dijk, Broens, Kik, van der Lee & Ahmed – One Health Mycol 1: 34, 2024; type strain XX