Keywords :
Candida uthaithanina sp. nov.,
Anamorphic yeast,
Nakaseomyces clade,
Fruit,
Moss,
Thailand
บทคัดย่อ :
Three yeast stains were isolated from two
unknown fruits (strains DD2-22-1T and SK44) and
moss (strain ST-449) in Thailand. Analysis of the D1/
D2 domain of the large subunit (LSU) rRNA gene
sequences of the three strains revealed that they
belonged to the same species. In terms of pairwise
sequence similarity, Candida cf. glabrata UWO(PS)
98-110.4 and Candida nivariensis were the closest
undescribed and recognized taxa, but the levels of
nucleotide substitutions were 1.7-1.9% and 2.0-2.2%,
respectively. The levels of nucleotide substitutions
were sufficient to justify the description of a separate
species of Candida. In the phylogenetic tree based on
the D1/D2 domain of the LSU rRNA gene the three
strains were placed in a separate branch in the Nak-
aseomyces clade with C. cf. glabrata UWO(PS)98-
110.4, C. nivariensis, Candida glabrata, Candida
bracarensis, Candida kungkrabaensis and Nakase-
omyces delphensis. Phenotypic characteristics of the
three strains were similar which included proliferation
by multilateral budding, absence of ascospores,
arthrospores or ballistospores; negative for Diazonium
blue B and urease tests. The major ubiquinone was
Q-6. On the basis of the above findings, the three
strains were assigned to a single novel species of
Candida, for which the name Candida uthaithanina
sp. nov is proposed. The type strain is DD2-22-1T
(= BCC 29899T = NBRC 104876T = CBS 10932T
).
เอกสารอ้างอิง :
Limtong, S., Jindamorakot, S., Am-In, S., Kaewwichian, R., Nitiyon, S., Yongmanitchai, W., & Nakase, T. (2011). Candida uthaithanina sp. nov., an anamorphic yeast species in Nakaseomyces clade isolated in Thailand. Antonie van Leeuwenhoek, 99(4), 865-871.
