Filobasidiales » Piskurozymaceae

Piskurozyma

Piskurozyma Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout, in Liu et al., Studies in Mycology 81: 113 (2015)

Etymology: The genus is named in honour of the late Jure Piškur for his contribution to yeast genetics, physiology and evolutionary biology.

Diagnosis: Basidiomes, if present, within the hymenium of the host. Dikaryotic hyphae with clamp connections. Haustoria not reported. In culture true hyphae occur occasionally. Pseudohyphae absent. Sexual reproduction observed for some species. Holobasidia slender with terminal sessile basidiospores. Budding cells present. Ballistoconidia may be present. Fermentation occasionally present. Nitrate may be utilised. Starch-like compounds usually produced. Major CoQ system CoQ-10.

Index Fungorum number: IF812206

Type species: Piskurozyma cylindrica (Á. Fonseca, Scorzetti & Fell) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout, in Liu et al., Studies in Mycology 81: 113 (2015)

Notes: Filobasidium capsuligenum was regarded as a single-species clade because of its unique fermentative ability. However, the close relationship of this species with the cylindricus clade was resolved in the seven-genes tree with strong support (Liu et al. 2015a). In the constrained ML tree from the expanded LSU rRNA sequence dataset, F. capsuligenum clustered together with a fungicolous species, Syzygospora sorana, and two recently published Cryptococcus species, namely C. filicatus (Golubev & Sampaio 2009) and C. fildesensis (Zhang et al. 2014). Therefore, these species are assigned to the genus Piskurozyma.

Species

Piskurozyma arborea Yurkov, Kachalkin, Mašínová & Baldrian 2019

Piskurozyma capsuligena (Fell, Statzell, I.L. Hunter & Phaff) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2015

Piskurozyma cylindrica (Á. Fonseca, Scorzetti & Fell) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2015

Piskurozyma fildesensis T.T. Zhang & Li Y. Yu ex Yurkov 2020

Piskurozyma filicata (Golubev & J.P. Samp.) Kachalkin 2015

Piskurozyma silvicola (Golubev & J.P. Samp.) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2015

Piskurozyma silvicultrix Turchetti, Mašínová, Baldrian & Yurkov 2019

Piskurozyma sorana (Hauerslev) T.T. Zhang, Li Y. Yu & Yurkov 2015

Piskurozyma stramentorum Yurkov, Mašínová & Baldrian 2019

Piskurozyma taiwanensis Nakase, Tsuzuki & M. Takash. ex Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2020

Piskurozyma tuonelana Lotze-Engelh., C. Richt. & Begerow 2016

Piskurozyma yama C. Richt., Mittelbach & Begerow 2016

 

Figure 1. Phylogenetic relationships of yeasts and related taxa in Tremellomycetes (major lineages) obtained by maximum-likelihood analysis of LSU (D1/D2 domains) rRNA gene. Tree topology was backbone-constrained with the well-supported (>85 %) bipartitions of the topology of the seven-genes tree (Liu et al. 2015a). Bootstrap percentages (BP) of maximum likelihood and neighbour-joining analyses from 1 000 replicates are shown respectively from left to right on the deep and major branches resolved and in brackets following recognised clades. Note: ns, not supported (BP < 50 %).