Thalassococcus arenae sp. nov. isolated from sea sand
2022
Weerawongwiwat, Veeraya | Kim, Jong-Hwa | Lee, Jung-Sook | Yoon, Jung-Hoon | Sukhoom, Ampaitip | Kim, Wonyong
A Gram-negative, aerobic, rod-shaped bacterium, designated strain CAU 1522ᵀ, was isolated from a sea sand sample collected from the Republic of Korea. Optimal growth of strain CAU 1522ᵀ ensued at 30 °C, pH 7.5, and 1.0% (w/v) NaCl. Strain CAU 1522ᵀ was affiliated to the genus Thalassococcus with high similarity to T. lentus KCTC 32084ᵀ (97.5%), T. profundi MCCC 1K03253ᵀ (96.5%), and T. halodurans JCM 13833ᵀ (96.1%) according to phylogenetic analysis based on 16S rRNA gene sequences. The whole genome of strain CAU 1522ᵀ was 3.7 Mb in length and included 7 contigs and 3599 protein-coding genes, with a G + C content of 65.4 mol%. The predominant cellular fatty acids were C₁₈:₁ ω6c and/or C₁₈:₁ ω7c (summed feature 8), with Q-10 being the sole isoprenoid quinone. The polar lipids included phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, phosphoglycolipid, and an unidentified lipid. These phenotypic, chemotaxonomic, and phylogenetic data support that strain CAU 1522ᵀ is a novel Thalassococcus species, for which the name T. arenae sp. nov. is proposed. The type strain is CAU 1522ᵀ (= KCTC 72545ᵀ = MCCC 1K04064ᵀ).
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