Gracilimonas sediminicola sp. nov., a moderately halotolerant bacterium isolated from seaweed sediment collected in the East Sea, Republic of Korea
- Authors
- Lee, Yunjeong; Weerawongwiwat, Veeraya; Kim, Jong-Hwa; Yoon, Jung-Hoon; Lee, Jung-Sook; Sukhoom, Ampaitip; Kim, Wonyong
- Issue Date
- 2023
- Publisher
- Microbiology Society
- Keywords
- 16S rRNA gene sequence; Balneolaceae; Balneolia; genome sequencing; Gracilimonas sediminicola; seaweed sediment
- Citation
- International Journal of Systematic and Evolutionary Microbiology, v.73, no.5
- Journal Title
- International Journal of Systematic and Evolutionary Microbiology
- Volume
- 73
- Number
- 5
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/70955
- DOI
- 10.1099/ijsem.0.005912
- ISSN
- 1466-5026
1466-5034
- Abstract
- A Gram-stain-negative, aerobic, rod-shaped bacterium, designated as strain CAU 1638T, was isolated from seaweed sediment collected in the Republic of Korea. The cells of strain CAU 1638T grew at 25–37 °C (optimum, 30 °C), at pH 6.0–7.0 (optimum, pH 6.5) and in the presence of 0–10% NaCl (optimum, 2 %). The cells were positive for catalase and oxidase and did not hydrolyse starch and casein. Strain CAU 1638T was most closely related to Gracilimonas amylolytica KCTC 52885T (97.7 %), followed by Gracilimonas halophila KCTC 52042T (97.4 %), Gracilimonas rosea KCCM 90206T (97.2 %), Gracili-monas tropica KCCM 90063T and Gracilimonas mengyeensis DSM 21985T (97.1 %), as revealed by 16S rRNA gene sequenc-ing. MK-7 was the major isoprenoid quinone, and iso-C15: 0 and C15: 1 ω6c were the major fatty acids. The polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, two unidentified lipids, two unidentified glycolipids and three unidentified phospholipids. The G+C content of the genome was 44.2 mol%. The average nucleotide identity and digital DNA–DNA hybridization values between strain CAU 1638T and the reference strains were 73.1–73.9 % and 18.9–21.5 %, respectively. Based on its phylogenetic, phenotypic and chemotaxonomic features, strain CAU 1638T represents a novel species of the genus Gracilimonas, for which the name Gracilimonas sediminicola sp. nov. is proposed. The type strain is CAU 1638T (=KCTC 82454T =MCCC 1K06087T ). © 2023 The Authors.
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