Fungalpedia – Note 45 Priceomyces

Priceomyces M. Suzuki & Kurtzman

Citation if using this entry: Fallahi et al. (2023) New genera in 2010-2011. Mycosphere (in prep)

Index Fungorum, MycoBank, GenBank, Fig 1

Kurtzman and Suzuki (2010) introduced Priceomyces in Debaryomycetaceae (Saccharomycetales) as a new ascomycetous yeast genus. Based on the phylogenetic analysis of the divergent domains of the large subunit (D1/D2) and the nearly complete small subunit (SSU) rDNA, Kurtzman and Suzuki (2010) introduced one new species and four new combinations in this genus; Priceomyces haplophilus (the type species), Priceomyces carsonii (Basionym: Pichia carsonii), Priceomyces castillae (Basionym: Pichia castillae), Priceomyces medius (Basionym: Pichia media), and Priceomyces melissophilus (Basionym: Pichia melissophila). Crous et al. (2017) also introduced two other new combinations in Priceomyces; Priceomyces northwykensis (Basionym: Candida northwykensis) and Priceomyces fermenticarens (Basionym: Candida fermenticarens). Asci in the genus can be unconjugated or arise as a result of conjugation between a cell and its bud. It is deliquescent or persistent and forms 1-4 ascospores, which might have a hat-shaped, smooth surface, or rough surface. The genus members usually are homothallic. Multilateral budding occurs on a narrow base to divide cells, and budded cells are spherical to elongate. Some species produce pseudohyphae, although there are no true hyphae. CoQ-9 is the main ubiquinone produced, and the diazonium blue B test is negative (Kurtzman and Suzuki. 2010; Kurtzman 2011).

Fig 1– Ascosporogenous culture of Priceomyces carsonii (redraw from Kurtzman 2011) on YM agar, 15 days, 25 °C. Spherical ascospores are in a linear configuration (arrow). Scale bar = 5 µm.

Type species: Priceomyces haplophilus (Shifrine & Phaff) M. Suzuki

Other accepted species:

Priceomyces carsonii (Phaff & E.P. Knapp) M. Suzuki

Priceomyces castillae (Santa María & C. García) M. Suzuki & Kurtzman

Priceomyces fermenticarens (Van der Walt) Gouliam., R.A. Dimitrov, M.T. Sm., Stoil.-Dish. & M. Groenew.

Priceomyces medius (Boidin, Pignal, Lehodey, Vey & Abadie) M. Suzuki

Priceomyces melissophilus (Van der Walt & Klift) M. Suzuki & Kurtzman

Priceomyces northwykensis (R.Sreen. Rao, N. Donovan, Shivaji, Arunasri, S.A. James, C.J. Bond, I.N. Roberts & P.J. Hobbs) Gouliam., R.A. Dimitrov, M.T. Sm., Stoil.-Dish. & M. Groenew.

Priceomyces northwykensis (R.Sreen. Rao, N. Donovan, Shivaji, Arunasri, S.A. James, C.J. Bond, I.N. Roberts & P.J. Hobbs) Gouliam., R.A. Dimitrov, M.T., Stoil.-Dish. & M. Groenew.

Priceomyces vitoshaensis R.A. Dimitrov, M.T. Sm., Stoil.-Dish. & M. Groenew.

References

Crous PW, Wingfield MJ, Burgess TI, Carnegie AJ, Hardy GS J, Smith D, Groenewald JZ et al. 2017- Fungal Planet description sheets: 625–715. Persoonia: Molecular Phylogeny and Evolution of Fungi 39, 270. https://doi.org/10.3767%2Fpersoonia.2017.39.11

Kurtzman CP, Suzuki M. 2010- Phylogenetic analysis of ascomycete yeasts that form coenzyme Q-9 and the proposal of the new genera Babjeviella, Meyerozyma, Millerozyma, Priceomyces, and Scheffersomyces. Mycoscience 51, 2-14. https://doi.org/10.1007/S10267-009-0011-5

Kurtzman CP. 2011- Priceomyces M. Suzuki & Kurtzman (2010). In The Yeasts (pp. 719-724). Elsevier. https://doi.org/10.1016/B978-0-444-52149-1.00059-8

Entry by

Maryam Fallahi, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.

(Edited by Kevin D Hyde and Ruvishika S. Jayawardena)