Affiliations 

  • 1 Laboratory of Marine Microbiology, Mie University, Kurima-machiya 1577, Tsu, Mie, 514-8507, Japan
  • 2 BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Faculty of Science, Ghent University, Campus Ledeganck, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
  • 3 School of Fisheries and Aquaculture Science, University Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • 4 Laboratory of Aquaculture and Artemia Reference Center, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
Int J Syst Evol Microbiol, 2017 Aug;67(8):3050-3056.
PMID: 28820118 DOI: 10.1099/ijsem.0.002080

Abstract

A Gram-negative, aerobic, polar-flagellated and rod-shaped, sometimes slightly curved bacterium, designated MA5T, was isolated from the gut of an abalone of the species Haliotis gigantea collected in Japan. Phylogenetic analyses based on 16S rRNA, gyrB, hsp60 and rpoB gene sequences placed strain MA5T in the genus Arcobacter in an independent phylogenetic line. Comparison of the 16S rRNA gene sequence of this strain with those of the type strains of the established Arcobacter species revealed A. nitrofigilis (95.1 %) as nearest neighbour. Strain MA5T grew optimally at 25 °C, pH 6.0 to 9.0 and in the presence of 2 to 5 % (w/v) NaCl under both aerobic and microaerobic conditions. The predominant fatty acids found were summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1 ω7c), C12 : 0 3-OH and C18 : 1 ω7c. Menaquinone-6 (MK-6) and menaquinone-7 (MK-7) were found as the major respiratory quinones. The major polar lipids detected were phosphatidylethanolamine and phosphatidylglycerol. Strain MA5T could be differentiated phenotypically from the phylogenetic closest Arcobacter species by its ability to grow on 0.05 % safranin and 0.01 % 2,3,5-triphenyl tetrazolium chloride (TTC), but not on 0.5 % NaCl. The obtained DNA G+C content of strain MA5T was 27.9 mol%. Based on the phylogenetic, chemotaxonomic and phenotypic distinctiveness of MA5T, this strain is considered to represent a novel species of the genus Arcobacter, for which the name Arcobacter haliotis sp. nov. is proposed. The type strain is MA5T (=LMG 28652T=JCM 31147T).

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.