Abstract
Strains of “atypical Legionella-like organisms”(ALLO) were studied by deoxyribonucleic acid homology. Strains WIGA (ALLO1) and MI-15 (ALLO2) were previously shown by Garrity et al. (G. M. Garrity, A. Brown, and R. M. Vickers, Int. J. Syst. Bacteriol. 30:609-614, 1980) to be related, and the name Fluoribacter bozemanae was proposed for them. We now show that strains NY-23 (ALLO4) and TEX-KL are also closely related genetically. Studies with strain LS-13 demonstrate a lower, but significant, degree of homology of LS-13 with strains WIGA, MI-15, and NY-23, justifying inclusion of all of these strains in a single genus, distinct from Legionella. It is proposed, therefore, that because of phenotypic similarities and genetic relatedness, strains NY-23, TEX-KL, and LS-13 be classified as members of the genus Fluoribacter, which also includes strains WIGA and MI-15. Because NY-23 and LS-13 are the type strains of Legionella dumoffii and L. gormanii, respectively, we propose the transfer of these species to the genus Fluoribacter as F. dumoffii (Brenner et al.) comb. nov. and F. gormanii (Morris et al.) comb. nov.
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