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Motilimonas cestriensis sp. nov., isolated from an inland brine spring in Northern England

A novel slightly halophilic Gram-stain-negative bacterial strain (MKS20(T)) was isolated from a brine sample collected from one of the Anderton brine springs in the Cheshire salt district, located in Northern England. Phylogenetic analysis of the 16S rRNA gene sequence revealed a close proximity to...

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Detalles Bibliográficos
Autores principales: Kelbrick, Matthew, Abed, Raeid M. M., Antunes, André
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Microbiology Society 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8375427/
https://www.ncbi.nlm.nih.gov/pubmed/33739249
http://dx.doi.org/10.1099/ijsem.0.004763
Descripción
Sumario:A novel slightly halophilic Gram-stain-negative bacterial strain (MKS20(T)) was isolated from a brine sample collected from one of the Anderton brine springs in the Cheshire salt district, located in Northern England. Phylogenetic analysis of the 16S rRNA gene sequence revealed a close proximity to Motilimonas eburnea (98.30 %), followed by Motilimonas pumila (96.62 %), the two currently described species within the genus Motilimonas. Strain MKS20(T) forms white-beige-pigmented colonies and grows optimally at 28–30 °C, in 1–3 % (w/v) NaCl and at pH 7–7.5. The strain was facultatively anaerobic and showed a broader range of carbohydrate use than other species in the genus Motilimonas. Q-8 was the sole respiratory quinone and the major fatty acids (>10 %) were summed feature 3 (C(16 : 1) ω6c and/or C(16 : 1) ω7c) and C(16 : 0). The polar lipid profile included diphosphatidylglycerol, phosphatidylethanolamine, phosphatidyglycerol and several unidentified lipids. The G+C content of the genomic DNA was 44.2 mol%. Average nucleotide identity and DNA–DNA hybridization data were consistent with assignment to a separate species. Based on the phylogenetic and genomic-based analyses, as well as physiological and biochemical characteristics, we propose that strain MKS20(T) (=DSM 109936(T), MCCC 1K04071(T)) represents a new species of the genus Motilimonas, with the name Motilimonas cestriensis sp. nov.