Genus

Ustilago

Species

abaconensis

Author

(Statzell, Scorzetti & Fell) Q.M. Wang, Begerow, F.Y. Bai & Boekhout, Studies in Mycology 81: 82 (2015)

Class

Ustilaginomycetes

Order

Ustilaginales

Family

Ustilaginaceae

Synonymy: = Pseudozyma abaconensis Statzell, Scorzetti & Fell, International Journal of Systematic and Evolutionary Microbiology 60 (8): 1982 (2010)

Description

Ustilago (Pers.) Roussel, Flore du Calvados et terrains adjacents, composée suivant la méthode de Jussieu: 47 (1806)

Type species:

Ustilago hordei (Pers.) Lagerh., Mitteilungen des badischen botanischen Vereins: 70 (1889)

Marine species:

Ustilago abaconensis (Statzell, Scorzetti & Fell) Q.M. Wang, Begerow, F.Y. Bai & Boekhout, Studies in Mycology 81: 82 (2015)

= Pseudozyma abaconensis Statzell, Scorzetti & Fell, International Journal of Systematic and Evolutionary Microbiology 60 (8): 1982 (2010)

Index Fungorum number: 812723 Faceoffungi number:N/A

After 3 days on 5% malt extract broth at 25 °C, the cells are ovoid, cylindrical or fusiform, 1.67–4.6 13.4 µm. Cells occur singly or in pairs. Budding is often polar and buds may be on sterigmata. A light sediment is present. After 1 month a sediment, ring or pellicle are present. On 5% malt extract agar, after 1 month at 25 °C, the surface of the colony is rugose and slightly hirsute and the margin is fringed with hyphae. On GPY agar, the colony is buff pink (mauve). After 1 month at 17 °C on Dalmau plate culture with cornmeal agar, true hyphae with retracted cytoplasm are present. Multiple cylindrical buds form on the hyphae at close intervals. Also, ovoid buds may be borne on sterigmata. There is no evidence of sexual reproduction on any of these agar media.

The type strain, CBS 8380T (5NRRL Y–17380T; isolate 9603–218), was collected on 25 May 1996 from coral reef waters, at a depth of 3–5 m, east of Green Turtle Key, Abaco, in the Bahamas (26u 479 320 N 77 u 199 580 W

Key references:

Statzell–Tallman A, Scorzetti G, Fell JW (2010). Candida spencermartinsiae sp. nov., Candida taylorii sp. nov. and Pseudozyma abaconensis sp. nov., novel yeasts from mangrove and coral reef ecosystems. International Journal of Systematic and Evolutionary Microbiology. 60(8):1978–1984.

Wang, QM, Begerow D, Groenewald M, Liu Z, Theelen B, Bai FY. Boekhout T (2015). Multigene phylogeny and taxonomic revision of yeasts and related fungi in the Ustilaginomycotina. Studies in Mycology. 81:55–83.

Type & Location:

Other Specimens:

Substratum:

Isolate from seawater.

Habitat:

Distribution:

Bahamas.

Pertinent Literature:

Comments:

NOTES: This species was first described as Pseudozyma abaconensis (Statzell–Tallman et al. 2010) and referred to Ustilago by Wang et al. 2015) based on molecular data. The genus Ustilago is polyphyletic and remains to be redefined (McTaggart et al. 2012). It is immature to emend this genus at present but Wang et al. 2015) consider it reasonable to transfer the three Pseudozyma species (P. abaconensis, P. shanxiensis, P. siamensis) to Ustilagao because they are located in the monophyletic Ustilago sensu stricto clade containing the type species of the genus. Thus, the genus Ustilago also contains anamorphic fungi. Ustilago abaconensis is the only Ustilago species so far reported from marine habitats.

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