Holtermanniella takashimae
Holtermanniella takashimae Wuczk., Passoth, A.-C. Andersson, Turchetti, Prillinger, Boekhout & Libkind, in Wuczkowski et al., International Journal of Systematic and Evolutionary Microbiology 61 (3) (2010)
Etymology: takashimae of Takashima, in honor of the Japanese yeast researcher Masako Takashima, for her valuable contributions to yeast systematics.
Diagnosis: Anamorphic. Belongs to the subphylum Agaricomycotina, class Tremellomycetes, Holtermannia clade. Yeast cells after 5 days at 15 °C on potato dextrose agar (PDA) are oval to elongate, measuring 3–5 (4) 62–4 (3) mm. On PDA, colonies appear convex, circular, pale pink and pasty in texture. Glucose is not fermented. All the strains of this species tested are anamorphic.
Index Fungorum number: IF517034
Figure 1. Phylogenetic placement of the genus Holtermanniella and the order Holtermanniales using sequence analysis of the D1/ D2 region by the neighbour-joining method (Saitou & Nei, 1987). Bootstrap analysis was carried out with 1000 replicates (Felsenstein, 1985); only values above 50% are shown. The tree is drawn to scale, with branch lengths in the same units as those of the evolutionary distances used to infer the tree. Evolutionary distances were computed using Kimura’s two-parameter method (Kimura, 1980) and are in the units of the number of base substitutions per site. Phylogenetic analyses were conducted in MEGA4 (Tamura et al., 2007). Accession numbers of D1/D2 sequences available in GenBank are included. Bar = 0.02 substitutions per site.
Figure 2. Cells of Holtermanniella takashimae HB 982T after 5 days at 15°C on PDA, showing budding cells. Bar = 10 
m.
Figure 3. rDNA sequence analysis of Holtermanniella takashimae strains inferred using the ITS1–5.8S–ITS2 region and the neighbour-joining method (Saitou & Nei, 1987). Bootstrap analysis was carried out with 1000 replicates (Felsenstein, 1985); only values above 50% are shown. The tree is drawn to scale, with branch lengths in the same units as those of the evolutionary distances used to infer the tree. Evolutionary distances were computed using Kimura’s two parameter method (Kimura, 1980) and are in units of the number of base substitutions per site. A total of 454 positions were included in the final dataset (positions containing gaps and missing data were eliminated). Phylogenetic analyses were conducted in MEGA4 (Tamura et al., 2007). Bar = 0.02 substitutions per site.
References:
Wuczkowski, M.; Passoth, V.; Tuchetti, B.; Andersson, A.C.; Olstorpe, M.; Laitila, A.; Theelen, B. (2011). Description of Holtermanniella takashimae sp. nov., Holtermanniella gen. nov. and proposal of the order Holtermanniales to accommodate Tremellomycetous yeasts of the Holtermannia clade. International Journal of Systematic and Evolutionary Microbiology. 61(3):680-689
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