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  • Title: Photobacterium piscicola sp. nov., isolated from marine fish and spoiled packed cod.
    Author: Figge MJ, Cleenwerck I, van Uijen A, De Vos P, Huys G, Robertson L.
    Journal: Syst Appl Microbiol; 2014 Jul; 37(5):329-35. PubMed ID: 24951451.
    Abstract:
    Five isolates from marine fish (W3(T), WM, W1S, S2 and S3) and three isolates misclassified as Photobacterium phosphoreum, originating from spoiled modified atmosphere packed stored cod (NCIMB 13482 and NCIMB 13483) and the intestine of skate (NCIMB 192), were subjected to a polyphasic taxonomic study. Phylogenetic analysis of 16S rRNA gene sequences showed that the isolates were members of the genus Photobacterium. Sequence analysis using the gapA, gyrB, pyrH, recA and rpoA loci showed that these isolates formed a distinct branch in the genus Photobacterium, and were most closely related to Photobacterium aquimaris, Photobacterium kishitanii, Photobacterium phosphoreum and Photobacterium iliopiscarium. The luxA gene was present in isolates W3(T), WM, W1S, S2 and S3 but not in NCIMB 13482, NCIMB 13483 and NCIMB 192. AFLP and (GTG)5-PCR fingerprinting indicated that the eight isolates represented at least five distinct genotypes. DNA-DNA hybridizations revealed 89% relatedness between isolate W3(T) and NCIMB 192, and values below 70% with the type strains of the phylogenetically closest species, P. iliopiscarium LMG 19543(T), P. kishitanii LMG 23890(T), P. aquimaris LMG 26951(T) and P. phosphoreum LMG4233(T). The strains of this new taxon could also be distinguished from the latter species by phenotypic characteristics. Therefore, we propose to classify this new taxon as Photobacterium piscicola sp. nov., with W3(T) (=NCCB 100098(T)=LMG 27681(T)) as the type strain.
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