1887

Abstract

Twenty-nine isolates of an unknown haemophilic organism were isolated from the lungs of pigs from 14 farms in Australia. Phylogenetic analyses based on the 16S rRNA gene, and showed a monophyletic group that was most closely related to and [] . Whole genome sequence analysis indicated that the and this group, using the type strain HS4635 for comparison, showed a similarity of 30.9 % DNA–DNA renaturation. The isolates were Gram-stain-negative, NAD-dependent, CAMP-negative and were oxidase-positive, catalase-negative and produced indole but not urease. The isolates could be separated from all currently recognized haemophilic and non-haemophilic members of the family . Key phenotypic properties were the production of indole, the lack of urease activity, production of β-galactosidase but not α-fucosidase, acid formation from (−)--arabinose, (+)--galactose, maltose and trehalose and a failure to produce acid from (−)--mannitol. Taken together, these data indicate that the isolates belong to a novel species for which the name sp. nov. is proposed. The type strain is HS4635 (=CCUG 71931 and LMG 30645).

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2020-05-15
2024-04-19
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