The group comprises the four valid species and Some isolates of are known to be psychrotolerant (growth at 7 °C or below). Here, specific sequence differences are described between the 16S rDNA, the 23S rDNA, the 16S–23S rDNA spacer region and the genes of the major cold-shock protein homologue in a variety of psychrotolerant and mesophilic and strains. Randomly amplified polymorphic DNA analysis using three different primers clearly separated psychrotolerant strains of both species from the rest of the group, as did inverse PCR patterns of the rDNA operons. These data strongly support a hitherto unrecognized fifth sub-group within the species group comprising psychrotolerant, but not mesophilic, strains. Despite the latter finding, the DNA sequences investigated exhibited a high degree of sequence similarity indicating a close relationship between the species of the group. Considering the unusual importance of in both food poisoning and food spoilage and to avoid merging all species of the group, a new species, sp. nov., comprising psychrotolerant ‘’ strains, is proposed. Isolates of the new species grow at 4–7°C but not at 43°C and can be identified rapidly using rDNA or targeted PCR. The type strain is WSBC 10204(= DSM 11821).


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error