Cystobasidium

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Cystobasidium

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Cystobasidium
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Cystobasidiomycetes
Order:	Cystobasidiales
Family:	Cystobasidiaceae
Genus:	Cystobasidium (Lagerh.) Neuhoff (1924)
Type species
Cystobasidium lasioboli (Lagerh.) Neuhoff (1924)

Cystobasidium is a genus of fungi in the order Cystobasidiales. The type species is a fungal parasite forming small gelatinous basidiocarps (fruit bodies) on various ascomycetous fungi (including Lasiobolus and Thelebolus spp) on dung.^[1] Microscopically, it has auricularioid (laterally septate) basidia producing basidiospores that germinate by budding off yeast cells. Other species are known only from their yeast states.^[2] The yeasts Cystobasidium minutum and C. calyptogenae are rare but known human pathogens.^[3]^[4]

Taxonomy

[edit]

The genus was originally described in 1898 by Swedish mycologist Gustaf Lagerheim as a subgenus of Jola^[5] and later (1924) raised to a full genus by German mycologist Walther Neuhoff. Its main distinguishing feature (microscopically) was the swollen, cyst-like probasidia from which the basidia emerge.^[5] Only one species, Cystobasidium lasioboli, was originally described, but two further species with probasidia were added by subsequent authors. In 1999, British mycologist Peter Roberts noted that Tremella fimetaria Schum. (1803) was an earlier name for Cystobasidium lasioboli and proposed the new combination Cystobasidium fimetarium.^[1]

Molecular research, based on cladistic analysis of DNA sequences, has shown that Cystobasidium (based on the type species) is a monophyletic (natural) genus. An additional 20 or so yeast species have been added to the genus, most of which were formerly placed in Rhodotorula.^[6]^[2]^[7]

References

[edit]

^ ^a ^b Roberts PJ (1999). "New British Records 164. Cystobasidium fimetarium (Schum.) P. Roberts comb. nov". Mycologist. 13: 171. doi:10.1016/S0269-915X(99)80105-0.
^ ^a ^b Wang, Q.-M.; Yurkov, A.M.; Göker, M.; Lumbsch, H.T.; Leavitt, S.D.; Groenewald, M.; Theelen, B.; Liu, X.Z.; Boekhout, T.; Bai, F.Y. (2015). "Phylogenetic classification of yeasts and related taxa within Pucciniomycotina". Studies in Mycology. 81: 149–189. doi:10.1016/j.simyco.2015.12.002. PMC 4777780. PMID 26951631. S2CID 20745335.
^ Inácio CP, Diniz MV, Araújo PS, Barros MS, Andrade MC, Lima-Neto RG, Macêdo DP, Neves RP (2020). "Bloodstream infection of a cancer patient by Cystobasidium minutum: A case report and literature review". Mycopathologia. 185 (2): 395–398. doi:10.1007/s11046-019-00415-x. PMID 31897974. S2CID 209528276.
^ Karajacob AS, Goh JP, Kallarakkal TG, Tay ST (2022). "First isolation and identification of Cystobasidium calyptogenae from the oral samples of an elderly patient presenting with angular cheilitis". Eur J Med Res. 27 (1): 277. doi:10.1186/s40001-022-00884-9. PMC 9724278. PMID 36471451.
^ ^a ^b Lagerheim G (1898). "Mykologische Studien 1: Beitrage zur Kenntnis der parasitischen Pilze, 1-3". Bih. K. Svenska Vet.-Akad. Handl. (Afd III). 24 (4): 1–21, 3p1.
^ Yurkov AM, Kachalkin AV, Daniel HM, Groenewald M, Libkind D, de Garcia V, Zalar P, Gouliamova DE, Boekhout T, Begerow D (2015). "Two yeast species Cystobasidium psychroaquaticum f.a. sp. nov. and Cystobasidium rietchieii f.a. sp. nov. isolated from natural environments, and the transfer of Rhodotorula minuta clade members to the genus Cystobasidium". Antonie van Leeuwenhoek. 107 (1): 173–185. doi:10.1007/s10482-014-0315-0. hdl:11336/12218. PMID 25367339. S2CID 254239871.
^ Li A, Yuan F, Groenewald M, Bensch K, Yurkov AM, Li K, Han P, Guo L, Aime MC, Sampaio JP, Jindamorakot S, Turchetti B, Inacio J, Fungsin B, Wang Q, Bai F (2020). "Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species". Studies in Mycology. 96: 17–140. doi:10.1016/j.simyco.2020.01.002. PMC 7082220. PMID 32206137.

Taxon identifiers
Cystobasidium	Wikidata: Q10465217 Wikispecies: Cystobasidium BOLD: 713103 CoL: 3Z3P EoL: 21197 GBIF: 2555962 iNaturalist: 462796 IndexFungorum: 17446 IRMNG: 1057873 MycoBank: 17446 NBN: BMSSYS0000005504 NCBI: 203525 NZOR: b9a1eed2-5d9c-41f2-ba3b-b014b38e8e3b Open Tree of Life: 141809 PLANTS: CYSTO3 SpeciesFungorum: 17446 WoRMS: 1457044

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