pacifica

Rhodotorula F.C. Harrison, Proc. & Trans. Roy. Soc. Canada, ser. 3 21(5): 349 (1927)

Type species:

Rhodotorula glutinis (Fresen.) F.C. Harrison, Transactions of the Royal Society of Canada 22: 190 (1928)

Marine species:

Rhodotorula pacifica Nagah. & Hamam., International Journal of Systematic and Evolutionary Microbiology 56 (1): 297 (2006)

Index Fungorum Number: 356948               Faceoffungi number: N/A

In YM broth (Difco) after 3 days culture at 25°C, cells are ovoidal to ellipsoidal (2–4x3–6 mm) and occur singly or in parent–bud pairs. A sediment and thin ring are formed after 1 month. After 1 month on YM agar at 25°C, streak culture is light pink to light orange, glistening, soft to slimy and has a complete margin. In Dalmau plate cultures on cornmeal agar (Difco), no branching hyphae or pseudohyphae are formed. Fermentation ability is negative. The following carbon compounds are assimilated: D-glucose, galactose, L-sorbose (weak), sucrose, maltose, cellobiose, trehalose, raffinose, melezitose, D-xylose, L-arabinose, D-arabinose, D-ribose, L-rhamnose (or weak), ethanol, glycerol, ribitol, galactitol, D-mannitol, D-glucitol (or weak), methyl a-D-glucoside, salicin, glucono-d-lactone, DL-lactic acid (weak), succinic acid, citric acid and D-galacturonic acid (weak); no growth occurs on melibiose, lactose, inulin, soluble starch, erythritol, inositol, 2-ketogluconic acid, 5- ketogluconic acid or D-glucuronic acid. The nitrogen compounds potassium nitrate, sodium nitrite, ethylamine, lysine and cadaverine are assimilated. Growth occurs at 35 but not at 40°C. Thiamin is required for growth. No growth occurs on 50% glucose/yeast extract agar or in the presence of 100 p.p.m. cycloheximide. Growth occurs in the presence of 10% sodium chloride. No starch-like substances are produced. Diazonium blue B reaction is positive. Urease activity is positive. The nuclear DNA G+C content is 57.5– 57.8 mol% (by HPLC). The major ubiquinone is Q-10.

Key references:

Jones EBG, Suetrong S, Sakayaroj J, Bahkali AH, Abdel–Wahab MA, Boekhout T, Pang KL (2015). Classification of marine Ascomycota, Basidiomycota, Blastocladiomycota and Chytridiomycota. Fungal Diversity 73: 1–72.

Nagahama T, Hamamoto M, Horikoshi K (2006). Rhodotorula pacifica sp. nov., a novel yeast species from sediment collected on the deep–sea floor of the north–west Pacific Ocean. International Journal of Systematic and Evolutionary Microbiology. 56(1): 295–299.

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.

List of marine Rhodotorula species:

1. R. aurantiaca (Saito) Lodder, Verh. K. Akad. Wet., tweede sect. 32: 78 (1934)
2. 2. R. bogoriensis (Deinema) Arx & Weijman, Antonie van Leeuwenhoek 45(4): 554 (1979)
3. R. evergladensis Fell, Statzell & Scorzetti, Antonie van Leeuwenhoek 99(3): 547 (2011)
4. R. glutinis (Fresen.) F.C. Harrison, Proc. & Trans. Roy. Soc. Canada, ser. 3 21(5): 349 (1928)
5. 5. graminis Di Menna, J. Gen. Microbiol. 18: 270 (1958)
6. R. ingeniosa (Di Menna) Arx & Weijman, Antonie van Leeuwenhoek 45(4): 554 (1979)
7. R. lactosa T. Haseg., J. gen. appl. Microbiol., Tokyo 5: 31 (1959)
8. R. marina Phaff, Mrak & O.B. Williams, Mycologia 44(4): 436 (1952)
9. R. mucilaginosa (A. Jörg.) F.C. Harrison, Proc. & Trans. Roy. Soc. Canada, ser. 3 21(5): 349 (1928)
10. R. pacifica Nagah. & Hamam., Intern. J. System. Evolutionary Microbiol. 56 (1): 297 (2006)