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Castro DJ, Gomez-Altuve A, Reina JC, Rodríguez M, Sampedro I, Llamas I, Martínez-Checa F. Roseovarius bejariae sp. nov., a moderately halophilic bacterium isolated from a hypersaline steep-sided river bed. Int J Syst Evol Microbiol 2020; 70:3194-3201. [DOI: 10.1099/ijsem.0.004154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An aerobic, Gram-stain-negative ovoid, designated as strain A21T, was isolated using the dilution-to-extinction method from a soil sample taken from Rambla Salada, an athalassohaline habitat located in Murcia (south-eastern Spain). Strain A21T is non-motile, has a respiratory metabolism and grows at NaCl concentrations within the range 0.5–15 % (w/v) [optimum, 5 % (w/v)], at 5–35 °C (optimum, 28 °C) and at pH 6–8 (optimum, pH 7.0). This strain is positive for catalase activity, oxidase activity and nitrate reduction. The 16S rRNA gene sequence indicates that it belongs to the genus
Roseovarius
in the class
Alphaproteobacteria
. The most closely related species are Roseovarius pacificus and Roseovarius halotolerans to which the strain A21T shows 16S rRNA gene sequence similarity values of 98.06 and 97.7 %, respectively. The average nucleotide identity in blast and digital DNA–DNA hybridization values between strain A21T and
R. pacificus
LMG 24575T are 76.8 and 21 %, respectively. The DNA G+C content based on the genome is 61.28 mol%. The major fatty acids (>5 % of the total fatty acids) of strain A21T are C18 : 1 ω7c/C18 : 1 ω6c and C16 : 0. The only detected isoprenoid quinone in strain A21T is ubiquinone 10 (Q-10). The polar lipid profile contains phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and three unidentified polar lipids. Based on the phylogenetic, genotypic, phenotypic and chemotaxonomic data, the strain represents a novel species of the genus
Roseovarius
, for which the name Roseovarius bejariae sp. nov. is proposed. Strain A21T (=CECT 9817T=LMG 31311T) is the type strain.
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Affiliation(s)
- David J. Castro
- Xtrem Biotech S.L., European Business Innovation Center, Avenida de la Innovación, 1, 18016, Armilla, Granada, Spain
- Biomedical Research Center (CIBM), Biotechnology Institute, Avda del Conocimiento s/n, 18100, Armilla, Granada, Spain
- Microbial Exopolysaccharide Research Group, Department of Microbiology, Pharmacy Faculty, Campus de Cartuja s/n, 18071 Granada, Spain
| | - Andreina Gomez-Altuve
- Biomedical Research Center (CIBM), Biotechnology Institute, Avda del Conocimiento s/n, 18100, Armilla, Granada, Spain
- Microbial Exopolysaccharide Research Group, Department of Microbiology, Pharmacy Faculty, Campus de Cartuja s/n, 18071 Granada, Spain
| | - José Carlos Reina
- Biomedical Research Center (CIBM), Biotechnology Institute, Avda del Conocimiento s/n, 18100, Armilla, Granada, Spain
- Microbial Exopolysaccharide Research Group, Department of Microbiology, Pharmacy Faculty, Campus de Cartuja s/n, 18071 Granada, Spain
| | - Miguel Rodríguez
- Biomedical Research Center (CIBM), Biotechnology Institute, Avda del Conocimiento s/n, 18100, Armilla, Granada, Spain
- Microbial Exopolysaccharide Research Group, Department of Microbiology, Pharmacy Faculty, Campus de Cartuja s/n, 18071 Granada, Spain
| | - Inmaculada Sampedro
- Biomedical Research Center (CIBM), Biotechnology Institute, Avda del Conocimiento s/n, 18100, Armilla, Granada, Spain
- Microbial Exopolysaccharide Research Group, Department of Microbiology, Pharmacy Faculty, Campus de Cartuja s/n, 18071 Granada, Spain
| | - Inmaculada Llamas
- Biomedical Research Center (CIBM), Biotechnology Institute, Avda del Conocimiento s/n, 18100, Armilla, Granada, Spain
- Microbial Exopolysaccharide Research Group, Department of Microbiology, Pharmacy Faculty, Campus de Cartuja s/n, 18071 Granada, Spain
| | - Fernando Martínez-Checa
- Biomedical Research Center (CIBM), Biotechnology Institute, Avda del Conocimiento s/n, 18100, Armilla, Granada, Spain
- Microbial Exopolysaccharide Research Group, Department of Microbiology, Pharmacy Faculty, Campus de Cartuja s/n, 18071 Granada, Spain
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