1887

Abstract

A rickettsial organism harboured by ticks on Barrow Island, Western Australia, was discovered after reports of possible rickettsiosis among local workers. Subsequent isolation of this rickettsia (strain BWI-1) in cell culture and analysis of its phylogenetic, genotypic and phenotypic relationships with type strains of species with standing in nomenclature suggested that it was sufficiently divergent to warrant its classification as a new species. Multiple gene comparison of strain BWI-1 revealed degrees of sequence similarity with , its closest relative, of 99.58, 98.89, 97.03, 96.93 and 95.73 % for the 16S rRNA, citrate synthase, , and 4 genes, respectively. Serotyping in mice also demonstrated that strain BWI-1 was distinct from Thus, we propose the naming of a new species, sp. nov., based on its novel genotypic and phenotypic characteristics. Strain BWI-1 was deposited in the ATCC, CSUR and ARRL collections under reference numbers VR-1664, CSUR R172 and RGBWI-1, respectively.

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2017-09-01
2020-12-02
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