Abstract:
:A Gram-negative, aerobic bacterium, designated as SH-1T, was isolated from the gut content of a whiteleg shrimp, Litopenaeus vannamei collected in a shrimp farm in South Korea. The bacterial cells were ovoid rod-shaped, non-motile, oxidase-positive and catalase-negative. Growth was observed at 20-35 °C (optimum, 30 °C), pH 5.0-9.5 (pH 8.5) and in the presence of 0-6 % (w/v) NaCl (2-3 %). The major polar lipids were phosphatidylglycerol, phosphatidylinositolmannoside, unidentified aminolipid and two unidentified lipids. The G+C content was 66.1 mol% and the predominant respiratory quinone was Q-10. Phylogenetic analysis based on the 16S rRNA gene sequences showed that strain SH-1T was placed in a distinct clade with Primorskyibacter marinus PX7T (96.97 % sequence similarity), Pontibaca methylaminivorans DSM 21219T (96.03 %) and Pelagivirga sediminicola BH-SD19T (95.02 %) in the family Rhodobacteraceae and distantly related with them to be a new genus. The digital DNA-DNA hybridization (dDDH), average nucleotide identity (ANI) and average amino acid identity (AAI) values calculated from whole-genome-sequence comparison between the SH-1T and the close species were in the ranges of 19.0-19.8, 73.8-74.9 and 64.1-65.9 %, respectively. Based on the polyphasic analysis presented in this study, we suggest that strain SH-1T represents a novel genus and species in the family Rhodobacteraceae, for which the name Pukyongiella litopenaei gen. nov., sp. nov. is proposed. The type strain of Pukyongiella litopenaei is SH-1T (=KCTC 62276T=MCCC 1K04072T).
journal_name
Int J Syst Evol Microbiolauthors
Kim YS,Kim SE,Kim SJ,Jung HK,Kim KHdoi
10.1099/ijsem.0.004269subject
Has Abstractpub_date
2020-07-01 00:00:00pages
4193-4198issue
7eissn
1466-5026issn
1466-5034journal_volume
70pub_type
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