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Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/74144

Type: Journal article
Title: Legionella steelei sp. nov., isolated from human respiratory specimens in California, USA, and South Australia
Author: Edelstein, Paul H.
Edelstein, Martha A.
Shephard, Lisa J.
Ward, Kevin W.
Ratcliff, Rodney Mark
Citation: International Journal of Systematic and Evolutionary Microbiology, 2012; 62(8):1766-1771
Publisher: Soc General Microbiology
Issue Date: 2012
ISSN: 1466-5026
School/Discipline: School of Molecular and Biomedical Science : Microbiology and Immunology
Statement of
Responsibility: 
Paul H. Edelstein, Martha A. Edelstein, Lisa J. Shephard, Kevin W. Ward and Rodney M. Ratcliff.
Abstract: Legionella-like bacteria were isolated from the respiratory tract of two patients in California, USA, and South Australia, but were not thought to cause disease. These bacteria, strains F2632 and IMVS-3376T, were found to have identical Legionella macrophage infectivity potentiator (mip) gene sequences and were therefore further characterized to determine their genetic and phenotypic relatedness and properties. Both of these Gram-negative-staining bacterial strains grew on buffered charcoal yeast extract medium, were cysteine auxotrophs and made a characteristic diffusible bright yellow fluorescent pigment, with one strain making a late appearing colony-bound blue–white fluorescent pigment. The optimal in vitro growth temperature was 35 °C, with very poor growth at 37 °C in broth or on solid media. There was no growth in human A549 cells at either 35 or 37 °C, but excellent growth in Acanthamoeba castellani at 30 °C and poorer growth at 35 °C. Phylogenetic analysis of these bacteria was performed by sequence analysis of 16S rRNA, mip, ribonuclease P, ribosomal polymerase B and zinc metalloprotease genes. These studies confirmed that the new strains represented a single novel species of the genus Legionella for which the name Legionella steelei sp. nov. is proposed. The type strain is IMVS-3376T ( = IMVS 3113T = ATCC BAA-2169T).
Description: The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA, mip, proA, rnpB and rpoB gene sequences of strain IMVS-3376T are HQ398202–HQ398206, respectively.
Rights: Copyright © 2012 International Union of Microbiological Societies
RMID: 0020121464
DOI: 10.1099/ijs.0.035709-0
Appears in Collections:Microbiology and Immunology publications
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