Yeasts from the Bovine Caecum

Phylogenetic analysis of the psychrophobic yeast Arxiozyma telluris and the reinstatement of Candida pintolopesii (van Uden) Meyer et Yarrow and Candida slooffii van Uden et do Carmo Sousa.

“…At present, the species A. telluris includes strains originally classified as C. slooffii (van Uden & do Carmo Sousa, 1957), T. bovina (l C. bovina) and T. pintolopesii (l C. pintolopesii) (Kurtzman, 1998a ;Barnett et al, 2000). Both morphologically and physiologically, these species were found to be extremely similar to one another and to S. telluris (l A. telluris ;van der Walt & Yarrow, 1984) and, as few carbon sources are utilized by these yeasts (Kurtzman, 1998a ;Barnett et al, 2000), species differentiation was limited mainly to differences in minimum temperature for growth and the ability to form ascospores or pseudomycelia (van Uden & Buckley, 1970 ;van Uden & Vidal-Leira, 1970 ;Mendonc: a-Hagler & Phaff, 1975).…”

“…Strain CBS 2419 T was isolated from the caecum of a horse and is the type strain of C. slooffii (van Uden & do Carmo Sousa, 1957). Strain CBS 2675 was recovered from rodent droppings in New Zealand.…”

“…Strain CBS 2685 T (l IGC 2663 T ) was isolated from soil in South Africa and is the type strain of A. telluris (originally described as S. tellustris ; van der Walt, 1957). Strain CBS 2670 T was recovered from the caecum of a cow and is the type strain of C. bovina (van Uden & do Carmo Sousa, 1957). Strain CBS 2778 was isolated from the caecum of a rat.…”

“…1) and appeared to represent an outlier to the other A. telluris strains examined. This strain was isolated originally from the caecal contents of a horse and was described by van Uden & do Carmo Sousa (1957) as the type strain of a new species of Candida, C. slooffii. As with the species name C. bovina, C. slooffii is presently reduced to a synonym of A. telluris (Kurtzman, 1998a ;Barnett et al, 2000) following the nDNA-nDNA hybridization study of Mendonc: a-Hagler & Phaff (1975).…”

Biodiversity of Yeasts in the Gastrointestinal Ecosystem with Emphasis on Its Importance for the Host

“…Van Uden et al (1958) and Van Uden & Carmo Sousa (1957b) examined yeasts in the caecal samples of large number of animals: 252 cattle, 252 horses, 503 sheep, 250 goats and 250 pigs. Yeasts were also studied by Parle (1957) in the digestive tract of cows, rabbits, sheep, guinea pigs, opossums, monkeys, cats, dogs, hedgehogs, mice, pigs and rats.…”