1887

Abstract

A taxonomic study was carried out on two bacterial strains, PCP11 and PCP104, isolated from a tidal flat of the Yellow Sea, Korea. Comparative 16S rRNA gene sequence studies showed that these strains belonged to the family , phylum . Strains PCP11 and PCP104 shared 99.4 % sequence similarity and were related most closely to KMM 3525 (95.8 and 96.0 % sequence similarity, respectively). Members of the genera , , and were the next closest relatives of the new isolates, with sequence similarities ≤91 %. The two isolates were Gram-staining-negative, strictly aerobic, gliding bacteria. They grew in the presence of 1–5 % NaCl, at pH 5.5–8.5 and at 4–35 °C. Strains PCP11 and PCP104 shared a number of physiological and biochemical properties with KMM 3525, but they differed from this strain in the hydrolysis of biopolymers and in the production of carotenoid and flexirubin-type pigments. Both strains possessed iso-C, summed feature 4 (Cω7 and/or iso-C 2-OH) and C as major cellular fatty acids. The major respiratory quinone was menaquinone 7 (MK-7). The G+C contents of the genomic DNA of strains PCP11 and PCP104 were 39.6 and 41.9 mol%, respectively. On the basis of phenotypic data and phylogenetic inference, it is proposed that the two isolates represent a novel species, sp. nov., with strain PCP11 ( = KACC 14523  = JCM 16588) as the type strain. Emended descriptions of the genus and are also proposed.

Funding
This study was supported by the:
  • Korean Ministry of Education, Science and Technology
  • Regional Core Research Program/Chungbuk BIT Research-Oriented University Consortium
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2011-08-01
2021-10-20
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