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| Candida keroseneae | |
|---|---|
Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Pichiomycetes |
| Order: | Serinales |
| Family: | Debaryomycetaceae |
| Genus: | Candida |
| Species: | C. keroseneae |
| Binomial name | |
| Candida keroseneae Buddie, Bridge, J.Kelley & M.J.Ryan (2011) | |
Candida keroseneae is a species ofyeast in the genusCandida, familySaccharomycetaceae. Described as new to science in 2011, it was isolated fromaviation fuel.
Thetype strain of this yeast (IMI 395605T) was isolated from aircraft fuel (kerosene) sampled from a European aircraft. Later analysis demonstrated that the isolated strains were able to grow inliquid media containing 50%Jet A-1 aviation fuel.Molecular analysis was performed using theribosomal RNA gene sequences ofinternal transcribed spacer regions in addition to the D1/D2 domains of the 26S nuclear ribosomal RNA gene. The two isolated strains clustered within theCandida membranifaciensclade, withC. tumulicola as the most closely related species. Thespecific epithetkeroseneae isNew Latin for kerosene, thesubstrate of the new species.[1]
The yeast cells, after growth onglucose-peptone-yeast extract brothculture for three days at 25 °C (77 °F), are egg-shaped to elongated, measuring 3–11 by 1–3.5 μm. They occur singly, inbudding pairs, or as shortpseudohyphae. The yeast can assimilate the followingcarbon sources: glucose,galactose,sucrose,L-arabinose,cellobiose,maltose,trehalose,lactose,D-xylose,rhamnose,isomaltulose,melibiose,melezitose;mannitol,sorbitol,glycerol,erythritol;N-acetyl glucosamine,2-ketogluconate,α-methyl-D-glucoside,levulinate andglucosamine. The yeast grew at a variety of temperatures between 25 and 37 °C (77 and 99 °F), but no growth was observed at 5 °C (41 °F) or 40 °C (104 °F).[1]
The kerosene from which the two yeast strains were isolated was analyzed withgas chromatography and shown to have 48 identifiable components.C. keroseneae appears to consume then-alkane compoundshexadecane,heptadecane, andoctadecane. Other microbes that can contaminate fuels include the yeastYarrowia lipolytica, the filamentous fungusHormoconis resinae, and the bacteriumPseudomonas aeruginosa.[1]