Polyporales » Meripilaceae » Pseudonadsoniella

Pseudonadsoniella brunnea

Pseudonadsoniella brunnea T.O. Kondr. & S.Y. Kondr. 2015, in Kondratyuk et al., Acta Botanica Hungarica, 57(3-4), 291-320 (2015).

Etymology: The species epithet reflects the brown color of colony-like formations during cultivation.

Diagnosis: The brown yeast-like fungus showing very slow growth on any nutrient media, while the best growth observed on Saburo agar medium and potato sections; cells single, very small to 1.52 μm diam., mainly regularly rounded or spherical, with 12 or several smaller budding cells or cells groups; cells do not form chains; matrix not observed, forming only more or less dense brown or dark-brown colony-like formations; true mycelium is absent; L-rhamnose, L-malate and xylitol assimilation registered; nitrification activity absent and sorbose assimilation weakly observed.

Index Fungorum Number: IF813889

Figure 1. Phylogeny of the yeast-like fungi based on ITS nrDNA sequences. Thick branches represent nodes supported by PP ≥ 99% and ML bootstrap ≥ 95%. 1 = Meripilaceae of the Polyporales, 2 = Meruliaceae of the Polyporales, 3 = Tremellomycetes, 4 = Pezizomycotina.

Figure 2. Pseudonadsoniella brunnea (holotype), general habit.


Figure 3. Pseudonadsoniella brunnea (holotype), general habit.