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KMID : 0880220200580020092
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Journal of Microbiology
2020 Volume.58 No. 2 p.92 ~ p.98
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Parahaliea maris sp. nov., isolated from surface seawater and emended description of the genus Parahaliea
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Liu Yang
Du Juan
Zhang Jun
Lai Qiliang
Shao Zongze
Zhu Honghui
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Abstract
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A Gram-stain-negative strictly aerobic, short-rod-shaped, and non-motile bacterial strain designated HSLHS9T was isolated from surface seawater collected from the South China Sea. Strain HSLHS9T could grow at 15?41°C (optimum 28°C), at pH 5.0?9.0 (optimum 6.0?7.0), and in 0?7% (w/v) NaCl (optimum 2?3%). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain HSLHS9T shared high identities with the closely related Parahaliea aestuarii S2-26T (98.6%) and Parahaliea mediterranea 7SM29T (97.8%) and formed a distinct lineage within the genus Parahaliea. Wholegenome sequencing of strain HSLHS9T revealed the size of 4.8 Mbp and DNA G + C content of 61.8 mol%. Strain HSLHS9T shared the digital DNA-DNA hybridization values of 22.4% and 23.0%, and the average nucleotide identities of 79.7% and 79.9%, respectively, with the two type strains above. The predominant cellular fatty acids of the strain were summed feature 8 (C18:1ω6c and/or C18:1ω7c), summed feature 3 (C16:1ω7c and/or C16:1ω6c), C17:1ω8c, and C16:0. The sole isoprenoid quinone was identified as Q-8. The polar lipids were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, aminolipid, and two glycolipids. Based on taxonomic data obtained in this study, it is suggested that strain HSLHS9T represents a novel species of the genus Parahaliea, for which the name Parahaliea maris sp. nov. is proposed. The type strain is HSLHS9T (= MCCC 1A06717T = KCTC 52307T). An emended description of the genus Parahaliea is also provided.
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KEYWORD
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Parahaliea maris, polyphasic taxonomy, genomic analysis, novel species
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