Transfer of Haemophilus equigenitalis Taylor et al. 1978 to the genus Taylorella gen. nov. as Taylorella equigenitalis comb. nov.

摘要: The taxonomic position ofHaemophilus equigenitalis Taylor et al. 1978, the causative agent of contagious equine metritis, was studied in comparison with phenotypically similar organisms such asMoraxella, Legionella, and others.Haemophilus is a microaerophilic, Gram-negative, nonmotile, short rod; mean base composition deoxyribonucleic acid this organism 36.5±0.5 mol% G+C. It shows best growth on chocolate agar, but very poor or no plain nutrient agar blood although it requires X- V-factors for growth. positive catalase, oxidase, phosphatase, phosphoamidase tests, unreactive other biochemical tests routine use. produces from any carbohydrates nor glycosidase. Arylamidase activities to β-naphtylamide derivatives various amino acids, di- tripeptides were also compared those taxa. group different known taxa numerical analysis its phenotypic characteristics, DNA composition, DNA-DNA hybridization. These data indicate thatH. does not belong genusHaemophilus genera, rather new genus. Therefore, we propose thatHaemophilus be reclassified genusTaylorella asTaylorella equigenitalis.