%0 Journal Article %A Nouioui, Imen %A Klenk, Hans-Peter %A Igual, José Mariano %A Gulvik, Christopher A. %A Lasker, Brent A. %A McQuiston, John R. %T Streptacidiphilus bronchialis sp. nov., a ciprofloxacin-resistant bacterium from a human clinical specimen; reclassification of Streptomyces griseoplanus as Streptacidiphilus griseoplanus comb. nov. and emended description of the genus Streptacidiphilus %D 2019 %J International Journal of Systematic and Evolutionary Microbiology, %V 69 %N 4 %P 1047-1056 %@ 1466-5034 %R https://doi.org/10.1099/ijsem.0.003267 %K Actinobacteria %K polyphasic taxonomy %K phenotyping %K bronchial lavage %I Microbiology Society, %X The taxonomic position of strain 15-057AT, an acidophilic actinobacterium isolated from the bronchial lavage of an 80-year-old male, was determined using a polyphasic approach incorporating morphological, phenotypic, chemotaxonomic and genomic analyses. Pairwise 16S rRNA gene sequence similarities calculated using the GGDC web server between strain 15-057AT and its closest phylogenetic neighbours, Streptomyces griseoplanus NBRC 12779T and Streptacidiphilus oryzae TH49T, were 99.7 and 97.6 %, respectively. The G+C content of isolate 15-057AT was determined to be 72.6 mol%. DNA–DNA relatedness and average nucleotide identity between isolate 15-057AT and Streptomyces griseoplanus DSM 40009T were 29.2±2.5 % and 85.97 %, respectively. Chemotaxonomic features of isolate 15-057AT were consistent with its assignment within the genus Streptacidiphilus : the whole-cell hydrolysate contained ll-diaminopimelic acid as the diagnostic diamino acid and glucose, mannose and ribose as cell-wall sugars; the major menaquinone was MK9(H8); the polar lipid profile consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, glycophospholipid, aminoglycophospholipid and an unknown lipid; the major fatty acids were anteiso-C15 : 0 and iso-C16 : 0. Phenotypic and morphological traits distinguished isolate 15-057AT from its closest phylogenetic neighbours. The results of our taxonomic analyses showed that strain 15-057AT represents a novel species within the evolutionary radiation of the genus Streptacidiphilus , for which the name Streptacidiphilus bronchialis sp. nov. is proposed. The type strain is 15-057AT (=DSM 106435T=ATCC BAA-2934T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.003267