1887

Abstract

Comparative 16S rDNA sequence analysis indicates that two distinct sublineages, with a sequence dissimilarity of >4 % (bootstrap value, 100 %), exist within the genus : the lineage, which comprises , , , , , , , and ; and the lineage, which comprises , , , and comb. nov. (previously ). This phylogenetic discrimination is supported by phenotypic differences. Members of the lineage have peritrichous flagella, do not produce acids from glucose and are susceptible to colistin, in contrast to members of the lineage, which have one or more polar flagella, produce acid from several carbohydrates and are colistin-resistant. Members of the lineage are viable for up to 6 days on tryptic soy agar at 25 °C, whereas members of the lineage are viable for longer than 9 days. It is proposed that species of the lineage should be classified in a novel genus, gen. nov. Finally, based on the literature and new DNA–DNA hybridization data, it is proposed that should be renamed comb. nov.

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2004-03-01
2020-07-12
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