scholarly journals Proposal of Hymenobacter norwichensis sp. nov., classification of ‘Taxeobacter ocellatus’, ‘Taxeobacter gelupurpurascens’ and ‘Taxeobacter chitinovorans’ as Hymenobacter ocellatus sp. nov., Hymenobacter gelipurpurascens sp. nov. and Hymenobacter chitinivorans sp. nov., respectively, and emended description of the genus Hymenobacter Hirsch et al. 1999

2006 ◽  
Vol 56 (9) ◽  
pp. 2071-2078 ◽  
Author(s):  
Sandra Buczolits ◽  
Ewald B. M. Denner ◽  
Peter Kämpfer ◽  
Hans-Jürgen Busse
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Novel Species ◽  
Polar Lipids ◽  
Rrna Gene ◽  
Sequence Comparisons ◽  
The Family ◽  
Separate Line

Two airborne bacterial isolates, NS/2 and NS/50T, were examined in order to determine their taxonomic position. Their almost complete 16S rRNA gene sequences shared 95.9 % similarity. Sequence comparisons demonstrated that their next relatives are species of the genus Hymenobacter (93.6–95.7 % similarity) and the strains ‘Taxeobacter chitinovorans’ Txc1T, ‘Taxeobacter gelupurpurascens’ Txg1T and ‘Taxeobacter ocellatus’ Myx 2105T (90.5–96.4 %). Phylogenetic calculations indicated that these five strains together with the three recognized Hymenobacter species form a separate line of descent within the family ‘Flexibacteraceae’. Isolates NS/2 and NS/50T, as well as ‘Taxeobacter chitinovorans’ Txc1T, ‘Taxeobacter gelupurpurascens’ Txg1T and ‘Taxeobacter ocellatus’ Myx 2105T, possessed the characteristics of the genus Hymenobacter, the quinone system menaquinone MK-7 and a polyamine pattern with the major polyamine being sym-homospermidine. Each of the five strains had complex, unique polar lipid profiles, with phosphatidylethanolamine and several unknown aminophospho-, amino-, phospho-, glyco- and polar lipids of which several compounds were also found in established Hymenobacter species. All the strains studied possessed fatty acids characteristic of Hymenobacter species, including major acids iso-C15 : 0, anteiso-C15 : 0, C16 : 1 ω5c, summed feature 3 (C16 : 1 ω7c/iso-C15 : 0 2-OH) and summed feature 4 (iso-C17 : 1 I/anteiso-C17 : 1 B). The five strains could be distinguished from each other and from the three established species of the genus Hymenobacter based on relatively low 16S rRNA gene sequence similarities (<97 %), unique polar lipids and differing fatty acid profiles and physiological characteristics. In conclusion, the description of four novel species of the genus Hymenobacter appears to be justified, for which the names Hymenobacter norwichensis sp. nov. (type strain NS/50T=LMG 21876T=DSM 15439T), Hymenobacter chitinivorans sp. nov. (type strain Txc1T=LMG 21951T=DSM 11115T), Hymenobacter gelipurpurascens sp. nov. (type strain Txg1T=LMG 21873T=DSM 11116T) and Hymenobacter ocellatus sp. nov. (type strain Myx 2105T=Txo1T=LMG 21873T=DSM 11117T) are proposed. For strain NS/2, a description only is provided without proposal of a name because its status as a novel species was not demonstrated unambiguously.

scholarly journals Zimmermannella helvola gen. nov., sp. nov., Zimmermannella alba sp. nov., Zimmermannella bifida sp. nov., Zimmermannella faecalis sp. nov. and Leucobacter albus sp. nov., novel members of the family Microbacteriaceae

2004 ◽  
Vol 54 (5) ◽  
pp. 1669-1676 ◽  
Author(s):  
Yi-Chueh Lin ◽  
Kazunori Uemori ◽  
Dominique A. de Briel ◽  
Vallapa Arunpairojana ◽  
Akira Yokota
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Novel Species ◽  
Rrna Gene ◽  
Hexadecanoic Acid ◽  
16S Rrna Gene Analysis ◽  
Separate Branch ◽  
The Family ◽  
Diamino Acid

Seven strains of actinobacteria, isolated from soil, wounds, urine, cow faeces, human blood and butter, were characterized by a polyphasic approach to clarify their taxonomic position. On the basis of chemotaxonomy, 16S rRNA gene analysis and DNA relatedness, strain IAM 14851T can be classified within the cluster of the genus Leucobacter and is proposed as a novel species, Leucobacter albus sp. nov., with strain IAM 14851T (=TISTR 1515T) as the type strain. The other six strains formed a phylogenetically separate branch in the family Microbacteriaceae, having the following characteristics: the major menaquinones are MK-8 to MK-10, the DNA G+C content ranges from 62 to 68 mol%, the diamino acid in the cell wall is diaminobutyric acid and the muramic acid in the peptidoglycan is of the acetyl type. The major fatty acids are 12-methyltetradecanoic acid (anteiso-C15 : 0), hexadecanoic acid (C16 : 0), 14-methyl-pentadecanoic acid (iso-C16 : 0) and 14-methyl-hexadecanoic acid (anteiso-C17 : 0). On the basis of morphological, physiological and chemotaxonomic characteristics, together with DNA–DNA hybridization and 16S rRNA gene sequence comparison, the novel genus Zimmermannella gen. nov. is proposed for these six strains. Four novel species are proposed: Zimmermannella helvola sp. nov. (type species; type strain IAM 14726T=NBRC 15775T=DSM 20419T=TISTR 1509T), Zimmermannella alba sp. nov. (type strain IAM 14724T=NBRC 15616T=TISTR 1510T), Zimmermannella bifida sp. nov. (type strain IAM 14848T=TISTR 1511T) and Zimmermannella faecalis sp. nov. (type strain IAM 15030T=NBRC 15706T=ATCC 13722T=TISTR 1514T).

scholarly journals Agromyces salentinus sp. nov. and Agromyces neolithicus sp. nov.

2005 ◽  
Vol 55 (1) ◽  
pp. 153-157 ◽  
Author(s):  
Valme Jurado ◽  
Ingrid Groth ◽  
Juan M. Gonzalez ◽  
Leonila Laiz ◽  
Cesareo Saiz-Jimenez
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Gene Sequence ◽  
Novel Species ◽  
Sequence Similarity ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Sequence Comparisons

A polyphasic study was carried out to clarify the taxonomic position of two Gram-positive bacteria isolated from soil samples of the Grotta dei Cervi (Italy), a relatively unexplored hypogean environment. The strains, 20-5T and 23-23T, showed phenotypic and phylogenetic characteristics that were consistent with their classification in the genus Agromyces. 16S rRNA gene sequence comparisons revealed that the two strains formed distinct phyletic lines within the genus Agromyces. Based on 16S rRNA gene sequence similarity, chemotaxonomic data and the results of DNA–DNA relatedness studies, it is proposed that the two isolates represent two novel species of the genus Agromyces. Pronounced differences in a broad range of phenotypic characteristics and DNA G+C content distinguished the two strains from each other and from previously described species of the genus Agromyces. Two novel species are proposed: Agromyces salentinus sp. nov. (type strain, 20-5T=HKI 0320T=DSM 16198T=NCIMB 13990T) and Agromyces neolithicus sp. nov. (type strain, 23-23T=HKI 0321T=DSM 16197T=NCIMB 13989T).

scholarly journals Alistipes indistinctus sp. nov. and Odoribacter laneus sp. nov., common members of the human intestinal microbiota isolated from faeces

2010 ◽  
Vol 60 (6) ◽  
pp. 1296-1302 ◽  
Author(s):  
Fumiko Nagai ◽  
Masami Morotomi ◽  
Yohei Watanabe ◽  
Hiroshi Sakon ◽  
Ryuichiro Tanaka
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Gene Sequence ◽  
Novel Species ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
The Family ◽  
End Products ◽  
Type Strains

Two anaerobic, non-spore-forming, non-motile, Gram-negative-staining bacteria, strains YIT 12060T and YIT 12061T, were isolated from human faeces. Cells of strain YIT 12060T were coccoid to rod-shaped with round ends, positive for catalase, negative for indole and oxidase production, produced succinic and acetic acids as end products of glucose metabolism in peptone/yeast extract/glucose medium and had a DNA G+C content of 55.2 mol%. The main respiratory quinones were MK-10 (40 %) and MK-11 (57 %). Fatty acid analysis demonstrated the presence of a high concentration of iso-C15 : 0 (56 %). Following 16S rRNA gene sequence analysis, this strain was found to be most closely related to species of the genus Alistipes, with 90.9–92.6 % gene sequence similarities to type strains of this species. Phylogenetic analysis and biochemical data supported the affiliation of strain YIT 12060T to the genus Alistipes of the family ‘Rikenellaceae’. Strain YIT 12060T therefore represents a novel species of the genus Alistipes for which the name Alistipes indistinctus sp. nov. is proposed; the type strain is YIT 12060T (=DSM 22520T=JCM 16068T). Cells of the other isolate, strain YIT 12061T, were pleomorphic rods that were asaccharolytic, catalase- and oxidase-negative, positive for gelatin hydrolysis and indole production, produced small amounts of succinic, acetic and iso-valeric acids as end products of metabolism in peptone/yeast extract medium and had a DNA G+C content of approximately 42.4 mol%. On the basis of 16S rRNA gene sequence similarity values, this strain was shown to belong to the family ‘Porphyromonadaceae’ and related to the type strains of Odoribacter splanchnicus (89.6 %) and Odoribacter denticanis (86.2 %); similarity values with strains of recognized species within the family ‘Porphyromonadaceae’ were less than 84 %. Biochemical data supported the affiliation of strain YIT 12061T to the genus Odoribacter. Strain YIT 12061T therefore represents a novel species for which the name Odoribacter laneus sp. nov. is proposed; the type strain is YIT 12061T (=DSM 22474T=JCM 16069T).

scholarly journals Classification of organisms previously reported as the SP and Stewart–Letscher groups, with descriptions of Necropsobacter gen. nov. and of Necropsobacter rosorum sp. nov. for organisms of the SP group

2011 ◽  
Vol 61 (8) ◽  
pp. 1829-1836 ◽  
Author(s):  
H. Christensen ◽  
B. M. Korczak ◽  
A. M. Bojesen ◽  
P. Kuhnert ◽  
W. Frederiksen ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
New Genus ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
The Family ◽  
Group Strain

To allow classification of bacteria previously reported as the SP group and the Stewart–Letscher group, 35 isolates from rodents (21), rabbits (eight), a dog and humans (five) were phenotypically and genotypically characterized. Comparison of partial rpoB sequences showed that 34 of the isolates were closely related, demonstrating at least 97.4 % similarity. 16S rRNA gene sequence comparison of 20 selected isolates confirmed the monophyly of the SP group and revealed 98.5 %–100 % similarity between isolates. A blast search using the 16S rRNA gene sequences showed that the highest similarity outside the SP group was 95.5 % to an unclassified rat isolate. The single strain, P625, representing the Stewart–Letscher group showed the highest 16S rRNA gene similarity (94.9–95.5 %) to members of the SP group. recN gene sequence analysis of 11 representative strains resulted in similarities of 97–100 % among the SP group strains, which showed 80 % sequence similarity to the Stewart–Letscher group strain. Sequence similarity values based on the recN gene, indicative for whole genome similarity, showed the SP group being clearly separated from established genera, whereas the Stewart–Letscher group strain was associated with the SP group. A new genus, Necropsobacter gen. nov., with only one species, Necropsobacter rosorum sp. nov., is proposed to include all members of the SP group. The new genus can be separated from existing genera of the family Pasteurellaceae by at least three phenotypic characters. The most characteristic properties of the new genus are that haemolysis is not observed on bovine blood agar, positive reactions are observed in the porphyrin test, acid is produced from (+)-l-arabinose, (+)-d-xylose, dulcitol, (+)-d-galactose, (+)-d-mannose, maltose and melibiose, and negative reactions are observed for symbiotic growth, urease, ornithine decarboxylase and indole. Previous publications have documented that both ubiquinones and demethylmenaquinone were produced by the proposed type strain of the new genus, Michel A/76T, and that the major polyamine of representative strains (type strain not included) of the genus is 1,3-diaminopropane, spermidine is present in moderate amounts and putrescine and spermine are detectable only in minor amounts. The major fatty acids of strain Michel A/76T are C14 : 0, C16 : 0, C16:1ω7c and summed feature C14 : 0 3-OH/iso-C16 : 1 I. This fatty acid profile is typical for members of the family Pasteurellaceae. The G+C content of DNA of strain Michel A/76T was estimated to be 52.5 mol% in a previous investigation. The type strain is P709T ( = Michel A/76T  = CCUG 28028T  = CIP 110147T  = CCM 7802T).

scholarly journals Agromyces italicus sp. nov., Agromyces humatus sp. nov. and Agromyces lapidis sp. nov., isolated from Roman catacombs

2005 ◽  
Vol 55 (2) ◽  
pp. 871-875 ◽  
Author(s):  
Valme Jurado ◽  
Ingrid Groth ◽  
Juan M. Gonzalez ◽  
Leonila Laiz ◽  
Barbara Schuetze ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Gene Sequence ◽  
Novel Species ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Phenotypic Characteristics ◽  
Sequence Comparisons ◽  
Dna Relatedness

A polyphasic study was carried out to clarify the taxonomic positions of three Gram-positive isolates from the Catacombs of Domitilla, Rome (Italy). 16S rRNA gene sequence comparisons placed these strains within the genus Agromyces. The morphological and chemotaxonomic characteristics of these isolates were consistent with the description of the genus Agromyces. The three isolates could be readily distinguished from one another and from representatives of all Agromyces species with validly published names by a broad range of phenotypic characteristics and DNA–DNA relatedness studies. Therefore, these isolates are proposed to represent three novel species of the genus Agromyces, Agromyces italicus sp. nov. (type strain CD1T=HKI 0325T=DSM 16388T=NCIMB 14011T), Agromyces humatus sp. nov. (type strain CD5T=HKI 0327T=DSM 16389T=NCIMB 14012T) and Agromyces lapidis sp. nov. (type strain CD55T=HKI 0324T=DSM 16390T=NCIMB 14013T).

scholarly journals Tabrizicola oligotrophica sp. nov. and Rhodobacter tardus sp. nov., two new species of bacteria belonging to the family Rhodobacteraceae

2020 ◽  
Vol 70 (12) ◽  
pp. 6266-6283 ◽  
Author(s):  
Ceshing Sheu ◽  
Zhi-Hao Li ◽  
Shih-Yi Sheu ◽  
Che-Chia Yang ◽  
Wen-Ming Chen
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Type Species ◽  
Novel Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
The Family

Two Gram-stain-negative, aerobic, non-motile bacteria, designated KMS-5T and CYK-10T, were isolated from freshwater environments. 16S rRNA gene sequence similarity results indicated that these two novel strains belong to the family Rhodobacteraceae . Strain KMS-5T is closely related to species within the genus Tabrizicola (96.1–96.8 % sequence similarity) and Cypionkella (96.5–97.0 %). Strain CYK-10T is closest to Rhodobacter thermarum YIM 73036T with 96.6 % sequence similarity. Phylogenetic analyses based on 16S rRNA gene sequences and an up-to-date bacterial core gene set showed that strain KMS-5T is affiliated with species in the genus Tabrizicola and strain CYK-10T is placed in a distinct clade with Rhodobacter blasticus ATCC 33485T, Rhodobacter thermarum YIM 73036T and Rhodobacter flagellatus SYSU G03088T. These two strains shared common chemotaxonomic features comprising Q-10 as the major quinone, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylcholine as the principal polar lipids, and C18 : 1  ω7c as the main fatty acid. The average nucleotide identity, average amino acid identity and digital DNA–DNA hybridization values between these two novel isolates and their closest relatives were below the cut-off values of 95–96, 90 and 70 %, respectively, used for species demarcation. The obtained polyphasic taxonomic data suggested that strain KMS-5T represents a novel species within the genus Tabrizicola , for which the name Tabrizicola oligotrophica sp. nov. is proposed with KMS-5T (=BCRC 81196T=LMG 31337T) as the type strain, and strain CYK-10T should represent a novel species of the genus Rhodobacter , for which the name Rhodobacter tardus sp. nov. is proposed with CYK-10T (=BCRC 81191T=LMG 31336T) as the type strain.

scholarly journals Mycobacterium europaeum sp. nov., a scotochromogenic species related to the Mycobacterium simiae complex

2011 ◽  
Vol 61 (7) ◽  
pp. 1606-1611 ◽  
Author(s):  
Enrico Tortoli ◽  
Erik C. Böttger ◽  
Anna Fabio ◽  
Enevold Falsen ◽  
Zoe Gitti ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Novel Species ◽  
Rrna Gene ◽  
The Novel ◽  
Gene Sequences ◽  
16S Rrna Gene Sequences ◽  
Polyphasic Analysis ◽  
Mycobacterium Simiae

Four strains isolated in the last 15 years were revealed to be identical in their 16S rRNA gene sequences to MCRO19, the sequence of which was deposited in GenBank in 1995. In a polyphasic analysis including phenotypic and genotypic features, the five strains (including MCRO19), which had been isolated in four European countries, turned out to represent a unique taxonomic entity. They are scotochromogenic slow growers and are genetically related to the group that included Mycobacterium simiae and 15 other species. The novel species Mycobacterium europaeum sp. nov. is proposed to accommodate these five strains. Strain FI-95228T ( = DSM 45397T  = CCUG 58464T) was chosen as the type strain. In addition, a thorough revision of the phenotypic and genotypic characters of the species related to M. simiae was conducted which leads us to suggest the denomination of the ‘Mycobacterium simiae complex’ for this group.

Glacieibacterium frigidum gen. nov., sp. nov., a novel member of the family Sphingosinicellaceae isolated from a glacier

2021 ◽  
Vol 71 (7) ◽  
Author(s):  
Qing Liu ◽  
Lei-Lei Yang ◽  
Hong-Can Liu ◽  
Guo-Qing Zhang ◽  
Yu-Hua Xin
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Species ◽  
Polar Lipids ◽  
Rrna Gene ◽  
The Tibetan Plateau ◽  
Unidentified Phospholipid ◽  
Content Type ◽  
Link Type ◽  
The Family

A novel Gram-stain-negative, rod-shaped, yellow bacterium, designated as LB1R16T, was isolated from the Laigu glacier on the Tibetan Plateau, PR China. Strain LB1R16T was catalase-positive, oxidase-negative and grew at 0–28 °C, pH 6.0–8.0 and in the absence of NaCl. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain LB1R16T belongs to the family Sphingosinicellaceae but formed an independent lineage. The highest level of 16S rRNA gene sequence similarities were found to Polymorphobacter arshaanensis DJ1R-1T (95.24 %), Sphingoaurantiacus capsulatus YLT33T (94.78 %) and Sandarakinorhabdus limnophila DSM 17366T (94.67 %). The genomic DNA G+C content was 68.8 mol%. The main cellular fatty acids were summed feature 8 (C18 : 1  ω7c/C18 : 1  ω6c), summed feature 3 (C16 : 1  ω7c/C16 : 1  ω6c), C16 : 0 and C12 : 0-OH. The respiratory quinone was ubiquinone-10. The polar lipids were phosphatidylethanolamine, phosphatidylglycerol, one sphingoglycolipid, one unidentified aminolipid, one unidentified phospholipid and two unidentified polar lipids, which were different from the type strains of Polymorphobacter arshaanensis , Sphingoaurantiacus capsulatus and Sandarakinorhabdus limnophila . Based on a polyphasic approach, a novel species of a new genus, Glacieibacterium frigidum gen. nov., sp. nov., within the family Sphingosinicellaceae is proposed. The type strain is LB1R16T (=CGMCC 1.11941T=NBRC 113873T).

scholarly journals Crenobacter luteus gen. nov., sp. nov., isolated from a hot spring

2015 ◽  
Vol 65 (Pt_1) ◽  
pp. 214-219 ◽  
Author(s):  
Lei Dong ◽  
Hong Ming ◽  
En-Min Zhou ◽  
Yi-Rui Yin ◽  
Lan Liu ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Hot Spring ◽  
Polar Lipids ◽  
16S Rrna Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Content Type ◽  
The Family

A slightly thermophilic, Gram-staining-negative and strictly aerobic bacteria, designated strain YIM 78141T, was isolated from a sediment sample collected at Hehua hot spring, Tengchong, Yunnan province, south-west China. Cells of the strain were short-rod-shaped and colonies were yellowish and circular. The strain grew at pH 6.0–10.0 (optimum, pH 8.0–9.0) and 10–55 °C (optimum, 40–50 °C). Phylogenetic analyses based on 16S rRNA gene sequence comparison demonstrated that strain YIM 78141T belongs to the family Neisseriaceae , and strain YIM 78141T also showed low levels of 16S rRNA gene sequence similarity (below 93.4 %) with all other genera in this family. The only quinone was ubiquinone 8 and the genomic DNA G+C content was 67.3 mol%. Major fatty acids (>5 %) were C12 : 0, C16 : 0, C18 : 1ω7c and summed feature 3. The polar lipids consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylmethylethanolamine, phospholipids of unknown structure containing aminoglycophospholipid and three unidentified polar lipids. On the basis of the morphological, physiological and biochemical characteristics as well as genotypic data, this strain should be classified as a representative of a novel genus and species of the family Neisseriaceae , for which the name Crenobacter luteus gen. nov., sp. nov. is proposed. The type strain is YIM 78141T ( = BCRC 80650T = KCTC 32558T = DSM 27258T).

scholarly journals Ursidibacter maritimus gen. nov., sp. nov. and Ursidibacter arcticus sp. nov., two new members of the family Pasteurellaceae isolated from the oral cavity of bears

2015 ◽  
Vol 65 (Pt_10) ◽  
pp. 3683-3689 ◽  
Author(s):  
Mie Johanne Hansen ◽  
Mira Strøm Braaten ◽  
Anders Miki Bojesen ◽  
Henrik Christensen ◽  
Christian Sonne ◽  
...  
Keyword(s):  
16S Rrna ◽  
Sequence Comparison ◽  
Type Strain ◽  
Polar Bear ◽  
New Genus ◽  
Novel Species ◽  
Brown Bear ◽  
Rrna Gene ◽  
Phenotypic Characters ◽  
The Family

Thirty-three suspected strains of the family Pasteurellaceae isolated from the oral cavity of polar and brown bears were characterized by genotypic and phenotypic tests. Phylogenetic analysis of partial 16S rRNA gene and rpoB sequences showed that the investigated isolates formed two closely related monophyletic groups, representing two novel species of a new genus. Based on 16S rRNA gene sequence comparison Bibersteinia trehalosi was the closest related species with a validly published name, with 95.4 % similarity to the polar bear group and 94.4 % similarity to the brown bear group. Otariodibacter oris was the closest related species based on rpoB sequence comparison with a similarity of 89.8 % with the polar bear group and 90 % with the brown bear group. The new genus could be separated from existing genera of the family Pasteurellaceae by three to ten phenotypic characters, and the two novel species could be separated from each other by two phenotypic characters. It is proposed that the strains should be classified as representatives of a new genus, Ursidibacter gen. nov., with two novel species: the type species Ursidibacter maritimus sp. nov., isolated from polar bears (type strain Pb43106T = CCUG 65144T = DSM 28137T, DNA G+C content 39.3 mol%), and Ursidibacter arcticus sp. nov., isolated from brown bears (type strain Bamse61T = CCUG 65145T = DSM 28138T).

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