2012 Volume 17 Issue 2 Pages 101-105
In May 2011, strain HYNE-20 (=JCM 17837) was isolated from a sample of hot spring water from a foot spa in Niigata, Japan, by a plating method using glycine vancomycin polymyxin B cycloheximide α -ketoglutarate (GVPCα ) medium at 36°C for 7 d. The 16S rDNA sequences (1,469bp) of this strain (accession number: AB638719) had high (99.7%) similarity to Legionella rubrilucens, and we identified that this strain was indeed Legionella rubrilucens. When this strain was cultured on buffered charcoal yeast extract α -ketoglutarate (BCYEα ) agar at 36°C for 7 d, it exhibited red autofluorescence under UV light (365 nm) . The dominant cellular fatty acids of the strain HYNE-20 were 16:1ω7c (29.9%) , and the guanine-plus-cytosine (G+C) content of DNA was 49.0 mol%. This is the first report that Legionella rubrilucens was isolated from a hot spring for foot soaking.
