Proposal for transfer of Defluviimonas alba to the genus Frigidibacter as Frigidibacter mobilis nom. nov

Liu, Yang; Pei, Tao; Zhang, Jun; Yang, Fan

doi:10.1099/ijsem.0.004216

“…Recently, this genus has been emended by Liu et al . [1]. At the time of writing, the genus comprises two type species, Frigidibacter albus , isolated from a cold-water lake [2], and Frigidibacter mobilis (basonym: Defluviimonas alba ), isolated from an oilfield [3].…”

Section: Full-textmentioning

confidence: 99%

Frigidibacter oleivorans sp. nov., isolated from a deep well with oil reservoir water

Zhang

¹

,

Li

²

,

Ma

³

et al. 2020

International Journal of Systematic and Evolutionary Microbiology

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A Gram-stain-negative, rod-shaped bacterium, designated XJ4T, was isolated from oil-contaminated water, collected from Xinjiang Province, north-west PR China (45° 1′ 27″ N, 85° 6′ 14″ E). Growth occurred at 20–45 °C (optimum, 30 °C) and pH 6.0–10.0 (optimum, pH 6.0–7.0). Strain XJ4T could tolerate up to 7 % (w/v) NaCl and grow optimally in the absence of NaCl. Phylogenetic analysis based on comparative sequence analysis of 16S rRNA gene sequences indicated that strain XJ4T belonged to the genus Frigidibacter , and that was closely related to Frigidibacter mobilis cai42T (97.2 %), Frigidibacter albus SP32T (97.0 %) and Rhodobacter aestuarii JA296T (97.0 %). The average nucleotide identity values between XJ4T and three type strains were 77.9, 77.6 and 71.9 %, respectively. The DNA G+C content of strain XJ4T was 69.5 mol%. The sole respiratory quinone was Q-10. The major cellular fatty acid was summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c), C18 : 0 and 11-methyl C18 : 1 ω7c. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, unidentified phospholipids, an unidentified aminolipid and unidentified lipids. On the basis of phenotypic, chemotaxonomic and phylogenetic analyses, strain XJ4T represents a novel species of the genus Frigidibacter , for which the name Frigidibacter oleivorans sp. nov. is proposed. The type strain is XJ4T (=CGMCC 1.13778T=LMG 30952T).

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“… Defluviimonas indica was initially transferred to the genus Acidimangrovimonas [2] and then reclassified again as Allgaiera indica [3]. In addition, Defluviimonas pyrenivorans and Defluviimonas alba were reclassified as Acidimangrovimonas pyrenivorans [2] and Frigidibacter mobilis [4], respectively. So far, four species with correct names are included in Defluviimonas (https://lpsn.dsmz.de/genus/defluviimonas).…”

Section: Introductionmentioning

confidence: 99%

Defluviimonas sediminis sp. nov., isolated from mangrove sediment

Liu

¹

,

Li

²

,

Huang

³

et al. 2023

International Journal of Systematic and Evolutionary Microbiology

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A Gram-stain-negative, facultatively aerobic, motile and ovoid- to rod-shaped bacterium, designated as FT324T, was isolated from a surface mangrove sediment sample from Shenzhen, PR China. The taxonomic position of strain FT324T was determined by a combination of phylogenetic, physiological, biochemical and chemotaxonomic analyses. Strain FT324T grew at 20–40 °C (optimum, 30–37 °C), pH 5.0–9.0 (optimum, pH 8.0) and in the presence of 0–3 % (w/v) NaCl (optimum, 1 %). Its full-length 16S rRNA gene sequence was the most similar to Frigidibacter oleivorans XJ4T (97.4 %), followed by Defluviimonas denitrificans DSM 18921T (96.62 %), Pseudothioclava arenosa CAU 1312T (96.54 %) and Defluviimonas nitratireducens DL5-4T (96.47 %). The major fatty acids (>10 %) of FT324T were C19 : 0 cyclo ω8c (51.9 %) and summed feature 8(29.6 %). The predominant respiratory quinone was Q-10. Its polar lipid profile contained phosphatidylethanolamine, phosphatidylmethylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, one unidentified aminolipid, one unidentified lipid and two unidentified phospholipids. Its estimated genome size was 4 294 115 bp and the genomic DNA G+C content was 69.6 mol%. Based on its distinct phenotypic, chemotaxonomic and phylogenetic characteristics, strain FT324T should represent a novel species of the genus Defluviimonas , for which the name Defluviimonas sediminis sp. nov. is proposed (=MCCC 1K07685T=KCTC 92477T).

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“…Comparison of strain DMG-N-6 T with closely related genera in the family Rhodobacteraceae; data were taken from the literature Taxa: 1, strain DMG-N-6 T ; 2, Tabrizicola[5, 6, 22-26, 28, 45, 48, 52], 3, Cereibacter[5,6,29,30,[53][54][55][56]; 4, Cypionkella[6,31,32,57]; 5, Fertoeibacter[58]; 6, Rhodobacter[3,26,27,[59][60][61][62][63][64][65][66][67][68]; 7, Frigidibacter[69][70][71][72]; 8, Actibacterium[73][74][75][76][77][78]; 9, Paracoccus[3,5,79,80]. BChla, bacteriochlorophyll a; PC, phosphatidylcholine; GL, glycolipid; DPG, diphosphatidylglycerol; +, present; −, absent.…”

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confidence: 99%

Szabonella alba gen. nov., sp. nov., a motile alkaliphilic bacterium of the family Rhodobacteraceae isolated from a soda lake

Szuróczki

¹

,

Abbaszade

²

,

Bóka

³

et al. 2022

International Journal of Systematic and Evolutionary Microbiology

6

0

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A Gram-stain-negative, oxidase- and catalase-positive, rod-shaped, creamy white coloured bacterial strain, DMG-N-6T, was isolated from a water sample of Lake Fertő/Neusiedler See (Hungary). Phylogenetic analysis based on 16S rRNA gene sequences revealed that the strain forms a distinct linage within the family Rhodobacteraceae . Its closest relatives are Tabrizicola alkalilacus DJCT (96.76% similarity) and Tabrizicola piscis K13M18T (96.76%), followed by Tabrizicola sediminis DRYC-M-16T (96.69 %), Rhodobacter sediminicola JA983T (96.62 %), Tabrizicola aquatica RCRI19T (96.47 %) and Cereibacter johrii JA192T (96.18 %). The novel bacterial strain favours an alkaline environment (pH 8.0-12.0) and grows optimally at 18–28°C in the presence of 2–4 % (w/v) NaCl. Cells of DMG-N-6T were motile by a single subpolar flagellum. Bacteriochlorophyll a was not detected. The predominant respiratory quinone was ubiquinone Q-10. The major cellular fatty acid was C18:1 ω7c. The polar lipid profile comprised phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylserine, phosphatidylcholine, an unidentified phospholipid and five unidentified lipids. The assembled draft genome of strain DMG-N-6T had 52 contigs with a total length of 4 219 778 bp and a G+C content of 64.3 mol%. Overall genome-related indices (ANI <77.8 %, AAI <69.0 %, dDDH <19.6 %) with respect to close relatives were all significantly below the corresponding threshold to demarcate bacterial genus and species. Strain DMG-N-6T (=DSM 108208T=NCAIM B.02645T) is strongly different from its closest relatives and is suggested as the type strain of a novel species of a new genus in the family Rhodobacteraceae , for which the name Szabonella alba gen. nov., sp. nov. is proposed.

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Proposal for transfer of Defluviimonas alba to the genus Frigidibacter as Frigidibacter mobilis nom. nov

Abstract: A polyphasic taxonomic study was undertaken to clarify the exact position of the type strain cai42T of the species Defluviimonas alba Pan Show more

Cited by 12 publications

References 28 publications

Frigidibacter oleivorans sp. nov., isolated from a deep well with oil reservoir water

Frigidibacter oleivorans sp. nov., isolated from a deep well with oil reservoir water

Defluviimonas sediminis sp. nov., isolated from mangrove sediment

Szabonella alba gen. nov., sp. nov., a motile alkaliphilic bacterium of the family Rhodobacteraceae isolated from a soda lake

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