Abstract
A bacterial strain, 17JY9-4T, was isolated from a soil sample collected on Jeju Island, South Korea. Colonies grown on R2A agar are pale pink in color, and cells are Gram-stain negative, short, and rod-shaped. Analysis of 16S rRNA gene sequences identified this strain as a member of the genus Mucilaginibacter in the family Sphingobacteriaceae, with high levels of 16S rRNA sequence similarity shared with Mucilaginibacter lutimaris BR-3T (98.0%), Mucilaginibacter rigui WPCB133T (98.0%), Mucilaginibacter phyllosphaerae PP-F2F-G21T (97.0%), Mucilaginibacter amnicola TAPP7T (96.8%), and Mucilaginibacter soli R9-65T (96.7%). Growth of strain 17JY9-4T occurs at 10–30 °C, pH 6–8, and in the presence of 0–1.0% NaCl. The genomic G+C content is 44.38 mol%. The predominant respiratory quinone of the isolate is MK-7; the major fatty acids are summed feature 3 (C16:1ω7c/C16:1ω6c) (39.7%), iso-C15:0 (22.8%), iso-C17:0 3-OH (7.8%), and C16:0 (7.7%); and the major polar lipid is phosphatidylethanolamine. The phenotypic and chemotaxonomic data support the placement of strain 17JY9-4T within the genus Mucilaginibacter. However, the DNA–DNA relatedness between the isolate and M. rigui, M. lutimaris, M. phyllosphaerae, M. amnicola, and M. soli were 44.3 ± 3.0%, 38.6 ± 3.7%, 23.2 ± 2.9%, 21.9 ± 3.1%, and 18.6 ± 3.7%, respectively. The results of 16S rRNA gene sequence similarity analysis, DNA–DNA hybridization analysis, and the observed differentiating phenotypic properties from other closely related taxa clearly indicate that strain 17JY9-4T represents a novel species in the genus Mucilaginibacter, for which the name Mucilaginibacter terrigena sp. nov. is proposed. The type strain is 17JY9-4T (= KCTC 62294T = JCM 33049T).
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Acknowledgements
This work was supported by the Brain Pool Program (Grant No. 2019H1D3A2A01061406) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea.
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The 16S rRNA gene sequence of strain 17JY9-4T has been deposited in NCBI GenBank/EMBL/DDBJ under the accession number LC434629. The Whole Genome Shotgun project number of strain 17JY9-4T in GenBank/EMBL/DDBJ is SEWG00000000. The Digital Protologue Database TaxoNumber for strain 17JY9-4T is TA00831.
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Ten, L.N., Jeon, N.Y., Li, W. et al. Mucilaginibacter terrigena sp. nov. sp., A Novel Member of the Family Sphingobacteriaceae. Curr Microbiol 76, 1152–1160 (2019). https://doi.org/10.1007/s00284-019-01748-y
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DOI: https://doi.org/10.1007/s00284-019-01748-y