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Chachezhania sediminis sp. Nov., isolated from marine sediment

Authors
Baek, J.Kim, J.-H.Yoon, J.-H.Lee, J.-S.Sukhoom, A.Kim, W.
Issue Date
2021
Publisher
Microbiology Society
Keywords
16S rRNA gene sequence; Alphaproteobacteria; Chachezhania sediminis sp. nov.; Genome sequencing; Marine sediment; Rhodobacteraceae
Citation
International Journal of Systematic and Evolutionary Microbiology, v.71, no.7
Journal Title
International Journal of Systematic and Evolutionary Microbiology
Volume
71
Number
7
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/49743
DOI
10.1099/ijsem.0.004904
ISSN
1466-5026
1466-5034
Abstract
A Gram-stain-negative, aerobic, non-motile, rod-shaped bacterial strain (CAU 1508T) was isolated from marine sediment collected in the Republic of Korea. Growth was observed at 10–45 °C (optimum, 30 °C), pH 4.0–11.0 (optimum, pH 6.0–8.0) and with 0–8.0% (w/v) NaCl (optimum, 2–4%). The isolate formed a monophyletic clade in the phylogenetic analyses using 16S rRNA gene and whole-genome sequences, exhibiting the highest similarity to Chachezhania antarctica SM1703T (96.5%), and representing a distinct branch within the genus Chachezhania (family Rhodobacteraceae). Its whole genome sequence was 5.59 Mb long, with a G+C content of 65.7 mol% and 2183 predicted genes belonging to six functional categories. The average nucleotide identity and digital DNA–DNA hybridization values between CAU 1508T and C. antarctica SM1703T were 79.1 and 22.2%, respectively. The predominant cellular fatty acids were C19:0 cyclo ω8c and summed feature 8 (C18:1 ω7c/C18:1 ω6c). The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, two unidentified phospholipids and one unidentified aminophospholipid. The sole isoprenoid quinone was ubiquinone 10. Phenotypic phylogenetic properties supported the classification of CAU 1508T as representing a novel species of the genus Chachezhania, with the proposed name Chachezhania sediminis sp. nov. The type strain is CAU 1508T (=KCTC 62999T=NBRC 113697T). © 2021 The Authors.
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