Phylogenetic identification of n-alkane assimilating Candida yeasts based on nucleotide divergence in the 5' end of LSU rDNA gene.
- 1 January 2000
- journal article
- Published by Microbiology Research Foundation in The Journal of General and Applied Microbiology
- Vol. 46 (5), 257-262
- https://doi.org/10.2323/jgam.46.257
Abstract
Phylogenetic relationships of several species within the n-alkane assimilating Candida yeasts were investigated by using characters from the nucleotide sequence of the variable D1/D2 region at the 5' end of a large-subunit (26S) ribosomal DNA (rDNA) gene. First the nucleotide sequences of D1/D2 domain of Candida sp. 1098 (formerly identified as C. tropicalis 1098) and its dicarboxylic acid-producing-mutant strain M1210 were investigated. These two nucleotide sequences were identical and lacked only one base pair compared with that of C. maltosa CBS 5611 (type strain), and they were identified as C. maltosa. We then showed that C. maltosa IFO 1978 (formerly identified as C. cloacae) and C. maltosa IFO 1975 (formerly identified as C. subtropicalis) had the same nucleotide sequence and had only one base pair substitution compared with C. maltosa CBS 5611 (type strain), which is consistent with conventional classification. We also found that another widely studied n-alkane assimilating Candida yeast, C. tropicalis pk233, to be C. viswanathii.Keywords
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