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  • Title: Arcobacter cibarius sp. nov., isolated from broiler carcasses.
    Author: Houf K, On SLW, Coenye T, Mast J, Van Hoof J, Vandamme P.
    Journal: Int J Syst Evol Microbiol; 2005 Mar; 55(Pt 2):713-717. PubMed ID: 15774649.
    Abstract:
    Twenty Gram-negative, rod-shaped, slightly curved, non-spore-forming bacteria that gave a negative result in Arcobacter species-specific PCR tests but that yielded an amplicon in an Arcobacter genus-specific PCR test were isolated from 13 unrelated broiler carcasses. Numerical analysis of the profiles obtained by SDS-PAGE of whole-cell proteins clustered all isolates in a single group distinct from the other Arcobacter species. DNA-DNA hybridization among four representative strains exhibited DNA binding values above 91 %. DNA-DNA hybridization with reference strains of the current four Arcobacter species revealed binding levels below 47 %. The G+C contents ranged between 26.8 and 27.3 mol%. Pairwise comparison of 16S rRNA gene sequences revealed the mean values for similarity to the type strain of Arcobacter cryaerophilus (97.5 %), Arcobacter butzleri (96.5 %), Arcobacter skirrowii (96.0 %) and Arcobacter nitrofigilis (95.0 %). The levels of similarity to Campylobacter and Helicobacter species were below 88 and 87 %, respectively. The isolates could be distinguished from other Arcobacter species by the following biochemical tests: catalase, oxidase and urease activities; reduction of nitrate; growth at 25 and 37 degrees C under aerobic conditions; growth on 2-4 % (w/v) NaCl media; and susceptibility to cephalothin. These data demonstrate that the 20 isolates represent a single novel Arcobacter species, for which the name Arcobacter cibarius sp. nov. is proposed, with LMG 21996(T) (=CCUG 48482(T)) as the type strain.
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