- Volume 65, Issue Pt_2, 2015
Volume 65, Issue Pt_2, 2015
- New Taxa
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- Proteobacteria
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Perspicuibacter marinus gen. nov., sp. nov., a semi-transparent bacterium isolated from surface seawater, and description of Arenicellaceae fam. nov. and Arenicellales ord. nov.
More LessA Gram-stain-negative, non-motile, mesophilic, aerobic, rod-shaped bacterium, strain 2-9T, was isolated from surface seawater at Muroto city, Kochi prefecture, Japan. The strain was transparent on 1/5 strength marine broth plate but became easily visible when the plate was supplemented with pyruvate. Phylogenetic analyses based on the 16S rRNA gene sequence showed that the strain fell within the class Gammaproteobacteria and was most closely related to the genus Arenicella (92.7–93.0 % 16S rRNA gene sequence similarities to type strains of species of this genus) of an unclassified order within this class. The DNA G+C content of strain 2-9T was 41.7 mol%. The major fatty acids were C18 : 1ω7c (37.6 %), C16 : 1ω7c and/or iso-C15 : 0 2-OH (summed feature 3; 19.1 %), C18 : 0 (10.8 %), C16 : 0 (10.2 %) and an unidentified fatty acid with an equivalent chain-length value of 11.799 (9.5 %). The major polar lipids were phosphatidylglycerol, phosphatidylethanolamine and three unidentified lipids. Ubiquinone-8 (Q-8) was detected as the sole isoprenoid quinone. From these taxonomic data, it is proposed that strain 2-9T represents a novel species of a new genus, Perspicuibacter marinus gen. nov., sp. nov. The type strain of the type species is 2-9T ( = NBRC 110144T = KCTC 42196T). A new family, Arenicellaceae fam. nov. (type genus Arenicella ), and order, Arenicellales ord. nov., of the class Gammaproteobacteria are proposed to accommodate the novel taxon.
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Thiobacimonas profunda gen. nov., sp. nov., a member of the family Rhodobacteraceae isolated from deep-sea water
More LessA bacterial strain, JLT2016T, was isolated from a sample of South-eastern Pacific deep-sea water. Cells were Gram-stain-negative, aerobic, devoid of flagella, motile by gliding and rod-shaped. Colonies were mucoid and cream. Growth occurred at 1.0–11.0 % (w/v) NaCl, 10–40 °C and pH 4.0–9.0. The major fatty acids were summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c) (60.5 %), C19 : 0 cyclo ω8c (10.9 %) and C16 : 0 (9.0 %). The polar lipids included diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and two sphingoglycolipids. The DNA G+C content was 67.1 mol%. The closest relative of strain JLT2016T was Salipiger mucosus A3T (96.7 % 16S rRNA gene sequence similarity). The results of phylogenetic analyses with different treeing algorithms indicated that this strain belonged to the Roseobacter clade in the order Rhodobacterales . Based on polyphasic analysis, strain JLT2016T is considered to represent a novel genus and species, for which the name Thiobacimonas profunda gen. nov., sp. nov. is proposed. The type strain is JLT2016T ( = LMG 27365T = CGMCC 1.12377T).
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Bisgaardia miroungae sp. nov., a new member of the family Pasteurellaceae isolated from the oral cavity of northern elephant seals (Mirounga angustirostris), and emended description of the genus Bisgaardia
More LessA total of 17 bacterial isolates from northern elephant seals, tentatively classified within the family Pasteurellaceae, were further characterized by genotypic and phenotypic tests. Phylogenetic analysis of partial 16S rRNA and rpoB gene sequences showed that the isolates investigated formed a monophyletic group, closely related to the genus Bisgaardia within the family Pasteurellaceae . The rpoB gene sequence similarity was 97.2–100 % within the group and 16S rRNA gene sequence comparisons showed 99.2–99.8 % similarity within the group. According to 16S rRNA gene sequence analysis, the most closely related species with a validly published name was Bisgaardia hudsonensis with 96.9 % similarity and the most closely related species based on rpoB sequence comparison was Bisgaardia genomospecies 1 with an rpoB sequence similarity of 90.9 %. All the isolates investigated exhibited the phenotypic characteristics of the family Pasteurellaceae . However, these isolates could be separated from existing species of the genus Bisgaardia by the following characteristics: ability to grow at 42 °C, and acid production from lactose, melibiose, raffinose and l-rhamnose, but not from d-mannitol or trehalose. On the basis of both phylogenetic and phenotypic evidence, it is proposed that the strains should be classified as representatives of a novel species within the genus Bisgaardia : Bisgaardia miroungae sp. nov. The type strain, WildatricT ( = CCUG 65148T = DSM 28141T), was isolated from the oral cavity of a wild northern elephant seal at The Marine Mammal Center, California, USA in 2011. To include the novel species, the description of the genus Bisgaardia has been emended.
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Sphingobium subterraneum sp. nov., isolated from ground water
More LessA Gram-stain-negative, strictly aerobic, non-motile, non-spore-forming, yellow, rod-shaped bacterium, designated S-II-13T, was isolated from ground water at Daejeon in Korea. Strain S-II-13T grew between 15 and 30 °C (optimal growth at 28 °C), between pH 6.0 and 9.0 (optimal growth at pH 7.5) and at salinities of 0.3–1.5 % (w/v) NaCl, growing optimally with 0.5 % (w/v) NaCl. On the basis of 16S rRNA gene sequence analysis, strain S-II-13T was found to belong to the genus Sphingobium , showing closest phylogenetic similarity to Rhizorhapis suberifaciens CA1T (97.0 % 16S rRNA gene sequence similarity), Sphingobium sufflavum HL-25T (96.9 %) and Sphingobium vulgare HU1-GD12T (96.6 %). The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylmonomethylethanolamine, phosphatidylcholine and sphingoglycolipid. The predominant ubiquinone was Q-10. The major fatty acids were C18 : 1ω7c, C14 : 0 2-OH, C16 : 0 and summed feature 3 (C16 : 1ω7c and/or iso-C15 : 0 2-OH). The DNA G+C content of strain S-II-13T was 63.5 mol%. DNA–DNA relatedness between strain S-II-13T and Rhizorhapis suberifaciens LMG 17323T, Sphingobium sufflavum KCTC 23953T and Sphingobium vulgare KCTC 22289T was 24, 52 and 55 %, respectively. On the basis of evidence from this taxonomic study using a polyphasic approach, strain S-II-13T represents a novel species of the genus Sphingobium for which the name Sphingobium subterraneum sp. nov. is proposed. The type strain is S-II-13T ( = KACC 17606T = NBRC 109814T).
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Phyllobacterium sophorae sp. nov., a symbiotic bacterium isolated from root nodules of Sophora flavescens
Two novel Gram-stain-negative strains (CCBAU 03422T and CCBAU 03415) isolated from root nodules of Sophora flavescens were classified phylogenetically into the genus Phyllobacterium based on the comparative analysis of 16S rRNA and atpD genes. They showed 99.8 % rRNA gene sequence similarities to Phyllobacterium brassicacearum LMG 22836T, and strain CCBAU 03422T showed 91.2 and 88.6 % atpD gene sequence similarities to strains Phyllobacterium endophyticum LMG 26470T and Phyllobacterium brassicacearum LMG 22836T, respectively. Strain CCBAU 03422T contained Q-10 as its major quinone and showed a cellular fatty acid profile, carbon source utilization and other phenotypic characteristics differing from type strains of related species. DNA–DNA relatedness (lower than 48.8 %) further confirmed the differences between the novel strains and the type strains of related species. Strain CCBAU 03422T could nodulate and fix nitrogen effectively on its original host plant, Sophora flavescens. Based upon the results mentioned above, a novel species named Phyllobacterium sophorae is proposed and the type strain is CCBAU 03422T ( = A-6-3T = LMG 27899T = HAMBI 3508T).
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Rhizobium yantingense sp. nov., a mineral-weathering bacterium
More LessA Gram-stain-negative, rod-shaped bacterial strain, H66T, was isolated from the surfaces of weathered rock (purple siltstone) found in Yanting, Sichuan Province, PR China. Cells of strain H66T were motile with peritrichous flagella. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain H66T belongs to the genus Rhizobium . It is closely related to Rhizobium huautlense SO2T (98.1 %), Rhizobium alkalisoli CCBAU 01393T (98.0 %) and Rhizobium cellulosilyticum ALA10B2T (98.0 %). Analysis of the housekeeping genes, recA, glnII and atpD, showed low levels of sequence similarity (<92.0 %) between strain H66T and other recognized species of the genus Rhizobium . The predominant components of the cellular fatty acids were summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c) and C16 : 0. The G+C content of strain H66T was 60.3 mol%. Strain H66T is suggested to be a novel species of the genus Rhizobium based on the low levels of DNA–DNA relatedness (ranging from 14.3 % to 40.0 %) with type strains of species of the genus Rhizobium and on its unique phenotypic characteristics. The namehttp://dx.doi.org/10.1601/nm.1279 Rhizobium yantingense sp. nov. is proposed for this novel species. The type strain is H66T ( = CCTCC AB 2014007T = LMG 28229T).
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Pseudomonas yamanorum sp. nov., a psychrotolerant bacterium isolated from a subantarctic environment
More LessA psychrotolerant strain, 8H1T, was isolated from soil samples collected in Isla de los Estados, Ushuaia, Argentina. Cells were Gram-negative, aerobic, straight rods, occurring singly or in pairs, non-spore-forming and motile by means of two polar flagella. The isolate was able to grow in the range 4–35 °C, with optimum growth at 28 °C. The predominant cellular fatty acids were summed feature 3 (C16 : 1ω6c and/or C16 : 1ω7c), C16 : 0 and summed feature 8 (C18 : 1ω6c and/or C18 : 1ω7c). The polar lipid pattern of strain 8H1T comprised phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine and an unknown phospholipid. Ubiquinone 9 (Q-9) was the predominant lipoquinone. The DNA G+C content was 59.8 mol%. 16S rRNA gene sequence-based phylogeny suggested the affiliation of strain 8H1T to the ‘Pseudomonas fluorescens group’, displaying ≥98.5 % sequence similarity to 29 type strains. A multilocus sequence analysis (MLSA) study performed by concatenating 16S rRNA, gyrB, rpoD and rpoB gene sequences showed that isolate 8H1T could be discriminated from closely related species of the genus Pseudomonas and placed in the ‘Pseudomonas gessardii subgroup’, including the species with the highest MLSA sequence similarities: Pseudomonas brenneri (96.2 %), P. gessardii (96.1 %), P. proteolytica (96.0 %), P. meridiana (96.0 %) and P. mucidolens (95.4 %). DNA–DNA hybridization analysis between 8H1T and the type strains of these closely related species revealed relatedness values of 27.0, 8.8, 41.2, 39.7 and 46.1 %, respectively. These results, together with differences in several phenotypic features, support the classification of a novel species, for which the name Pseudomonas yamanorum sp. nov. is proposed. The type strain is 8H1T ( = DSM 26522T = CCUG 63249T = LMG 27247T).
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Brenneria populi sp. nov., isolated from symptomatic bark of Populus×euramericana canker
Five Gran-stain-negative, facultatively anaerobic, motile, bacterial strains were isolated from symptomatic bark tissue of Populus×euramericana canker. Strains grew at 4–41 °C, pH 4–10 and 0–6 % (w/v) salinity. They were positive with respect to catalase activity and negative for oxidase activity, nitrate reduction and the Voges–Proskauer reaction. Analysis of 16S rRNA gene sequences indicated that these five poplar isolates belong to the genus Brenneria , having highest sequence similarity of 95.98 % with Brenneria goodwinii LMG 26270T. These five isolates formed a single cluster based on multilocus sequence analysis, indicating that they all belong to a single taxon within the genus Brenneria , which was confirmed by DNA–DNA hybridization. The DNA G+C content was 54.9–55.7 mol%, and the main fatty acids were C16 : 0, C18 : 1ω7c, C17 : 0 cyclo and C16 : 1ω7c/iso-C15 : 0 2-OH. Based on these results, we describe a novel species of the genus Brenneria with the proposed name Brenneria populi sp. nov. The type strain is D9-5T ( = CFCC 11963T = KCTC 42088T).
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Proposal of Thorsellia kenyensis sp. nov. and Thorsellia kandunguensis sp. nov., isolated from larvae of Anopheles arabiensis, as members of the family Thorselliaceae fam. nov.
Two Gram-negative, rod-shaped strains, T2.1T and W5.1.1T, isolated from larvae of the mosquito Anopheles arabiensis, were investigated using a polyphasic approach. On the basis of 16S rRNA gene sequence similarity studies, strains T2.1T and W5.1.1T were shown to belong to the genus Thorsellia , both showing 97.8 % similarity to the type strain of Thorsellia anophelis , with 98.1 % similarity to each other. Chemotaxonomic data supported the allocation of the strains to the genus Thorsellia : their major fatty acids were C18 : 1ω7c, C16 : 0 and C14 : 0 and they harboured a ubiquinone Q-8 quinone system and a polyamine pattern with the major compound 1,3-diaminopropane. Qualitative and quantitative differences in their polar lipid profiles distinguished strains T2.1T and W5.1.1T from each other and from T. anophelis . Average nucleotide identity (ANI), DNA–DNA hybridization, multilocus sequence analysis (MLSA) as well as physiological and biochemical tests allowed T2.1T and W5.1.1T to be distinguished both genotypically and phenotypically from each other and from the type strain of T. anophelis . Thus, we propose that these isolates represent two novel species of the genus Thorsellia , named Thorsellia kenyensis sp. nov. (type strain T2.1T = CCM 8545T = LMG 28483T = CIP 110829T) and Thorsellia kandunguensis sp. nov. (type strain W5.1.1T = LMG 28213T = CIP 110794T). Furthermore, phylogenetic analysis based on nearly full-length 16S rRNA gene sequences showed that the genus Thorsellia forms a separate branch, distinct from the families Enterobacteriaceae , Pasteurellaceae and Orbaceae . As a consequence, a new family Thorselliaceae fam. nov. is proposed. An emended description of Thorsellia anophelis is also provided.
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Neisseria weaveri Andersen et al. 1993 is a later heterotypic synonym of Neisseria weaveri Holmes et al. 1993
Hana Yi and Jongsik ChunTwo species of the genus Neisseria , namely Neisseria weaveri Andersen et al. 1993 and Neisseria weaveri Holmes et al. 1993, were simultaneously proposed and described in the same volume of International Journal of Systematic Bacteriology, and have been maintained as heterotypic homonyms. However, the identical 16S rRNA gene sequence and high (99.1 %) average nucleotide identity (ANI) between the genome sequences of the two type strains implied that these two taxa should be united as a single genomic species. To clarify their taxonomic status, phenotypic properties including enzymic activities and substrate-utilization profiles were investigated. The results demonstrated that the two taxa have no pronounced differences and should constitute a single species. Therefore, the reclassification of N. weaveri Andersen et al. 1993 as a later heterotypic synonym of N. weaveri Holmes et al. 1993 is proposed.
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Rhizobium alvei sp. nov., isolated from a freshwater river
More LessA bacterial strain designated TNR-22T was isolated from a freshwater river in Taiwan and characterized using a polyphasic taxonomic approach. Cells of strain TNR-22T were facultatively anaerobic, Gram-stain-negative, rod-shaped, motile by a single polar flagellum and formed cream-coloured colonies. Growth occurred at 4–45 °C (optimum, 25–30 °C), with 0–1.0 % (w/v) NaCl (optimum, 0.5 %) and at pH 7.0–8.0 (optimum, pH 7.0). Strain TNR-22T did not form nodules on Macroptilium atropurpureum. The nifH gene encoding denitrogenase reductase was not detected by PCR. The major fatty acids (>10 %) of strain TNR-22T were C18 : 1ω7c and C16 : 0. The DNA G+C content was 60.3 mol%. The polar lipid profile consisted of a mixture of phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, diphosphatidylglycerol, an uncharacterized aminoglycolipid and an uncharacterized phospholipid. Comparative analysis of 16S rRNA gene sequences showed that strain TNR-22T constituted a distinct branch within the genus Rhizobium , showing the highest level of sequence similarity with Rhizobium rosettiformans W3T (96.3 %). Phenotypic characteristics of the novel strain also differed from those of the most closely related species of the genus Rhizobium . On the basis of the genotypic, chemotaxonomic and phenotypic data, strain TNR-22T represents a novel species in the genus Rhizobium , for which the name Rhizobium alvei sp. nov. is proposed. The type strain is TNR-22T ( = BCRC 80408T = LMG 26895T = KCTC 23919T).
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Rhizobacter bergeniae sp. nov., isolated from the root of Bergenia scopulosa
A yellowish-pigmented bacterium, designated strain PLGR-1T, was isolated from the root of Bergenia scopulosa collected from Taibai Mountain in Shaanxi Province, north-west China, and was subjected to a taxonomic study by using a polyphasic approach. Cells of strain PLGR-1T were Gram-stain-negative, strictly aerobic, rod-shaped, non-spore-forming and motile with a single polar flagellum. Growth occurred at 7–33 °C (optimum, 25–28 °C), at pH 5.0–10.0 (optimum, pH 6.0–7.0) and with 0–0.5 % (w/v) NaCl (optimum, 0 %). The predominant respiratory quinone was ubiquinone-8 (Q-8) and the major cellular fatty acids were summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c), C16 : 0 and summed feature 8 (comprising C18 : 1ω7c and/or C18 : 1ω6c). The major polyamines were putrescine and 2-hydroxyputrescine and the major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylglycerol. The DNA G+C content was 69.8 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain PLGR-1T belonged to the class Betaproteobacteria and formed a tight phyletic lineage with members of the genus Rhizobacter . Strain PLGR-1T was most closely related to Rhizobacter dauci DSM 11587T and Rhizobacter fulvus DSM 19916T, with 16S rRNA gene sequence similarities of 98.5 and 98.0 %, respectively. The DNA–DNA relatedness values between strain PLGR-1T and the type strains of Rhizobacter dauci and Rhizobacter fulvus were 46.3 and 14.7 %, respectively. Based on the phenotypic, phylogenetic and genotypic data, strain PLGR-1T is considered to represent a novel species of the genus Rhizobacter , for which the name Rhizobacter bergeniae sp. nov. is proposed. The type strain is PLGR-1T ( = CCTCC AB 2013018T = KCTC 32299T = LMG 27607T).
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Rhizobium sophorae sp. nov. and Rhizobium sophoriradicis sp. nov., nitrogen-fixing rhizobial symbionts of the medicinal legume Sophora flavescens
Five bacterial strains representing 45 isolates originated from root nodules of the medicinal legume Sophora flavescens were defined as two novel groups in the genus Rhizobium based on their phylogenetic relationships estimated from 16S rRNA genes and the housekeeping genes recA, glnII and atpD. These groups were distantly related to Rhizobium leguminosarum USDA 2370T (95.6 % similarity for group I) and Rhizobium phaseoli ATCC 14482T (93.4 % similarity for group II) in multilocus sequence analysis. In DNA–DNA hybridization experiments, the reference strains CCBAU 03386T (group I) and CCBAU 03470T (group II) showed levels of relatedness of 17.9–57.8 and 11.0–42.9 %, respectively, with the type strains of related species. Both strains CCBAU 03386T and CCBAU 03470T contained ubiquinone 10 (Q-10) as the major respiratory quinone and possessed 16 : 0, 18 : 0, 19 : 0 cyclo ω8c, summed feature 8 and summed feature 2 as major fatty acids, but did not contain 20 : 3 ω6,8,12c. Phenotypic features distinguishing both groups from all closely related species of the genus Rhizobium were found. Therefore, two novel species, Rhizobium sophorae sp. nov. for group I (type strain CCBAU 03386T = E5T = LMG 27901T = HAMBI 3615T) and Rhizobium sophoriradicis sp. nov. for group II (type strain CCBAU 03470T = C-5-1T = LMG 27898T = HAMBI 3510T), are proposed. Both groups were able to nodulate Phaseolus vulgaris and their hosts of origin (Sophora flavescens) effectively and their nodulation gene nodC was phylogenetically located in the symbiovar phaseoli.
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Burkholderia monticola sp. nov., isolated from mountain soil
More LessAn ivory/yellow, Gram-stain-negative, short-rod-shaped, aerobic bacterial strain, designated JC2948T, was isolated from a soil sample taken from Gwanak Mountain, Republic of Korea. 16S rRNA gene sequence analysis indicated that strain JC2948T belongs to the genus Burkholderia . The test strain showed highest sequence similarities to Burkholderia tropica LMG 22274T (97.6 %), Burkholderia acidipaludis NBRC 101816T (97.5 %), Burkholderia tuberum LMG 21444T (97.5 %), Burkholderia sprentiae LMG 27175T (97.4 %), Burkholderia terricola LMG 20594T (97.3 %) and Burkholderia diazotrophica LMG 26031T (97.1 %). Based on average nucleotide identity (ANI) values, the new isolate represents a novel genomic species as it shows less than 90 % ANI values with other closely related species. Also, other phylosiological and biochemical comparisons allowed the phenotypic differentiation of strain JC2948T from other members of the genus Burkholderia . Therefore, we suggest that this strain should be classified as the type strain of a novel species of the genus Burkholderia . The name Burkholderia monticola sp. nov. (type strain, JC2948T = JCM 19904T = KACC 17924T) is proposed.
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Description of Pseudobacteriovorax antillogorgiicola gen. nov., sp. nov., a bacterium isolated from the gorgonian octocoral Antillogorgia elisabethae, belonging to the family Pseudobacteriovoracaceae fam. nov., within the order Bdellovibrionales
More LessA bacterial strain designated RKEM611T was isolated from the octocoral Antillogorgia elisabethae, collected off the coast of San Salvador, The Bahamas. The strain is Gram-stain-negative, an obligate aerobe, and pleomorphic. It requires NaCl for growth and exhibits optimal growth at 1–2 % (w/v) NaCl, 30–37 °C and pH 6.0–8.0. The predominant cellular fatty acids are C16 : 1ω5c and C16 : 0; the major respiratory quinone is menaquinone MK-6, and the DNA G+C content is 46.3 mol%. Based on phylogenetic analysis of the 16S rRNA gene, in addition to phenotypic characteristics, RKEM611T represents a novel species and genus of a novel family within the order Bdellovibrionales . The names Pseudobacteriovoracaceae fam. nov. and Pseudobacteriovorax antillogorgiicola gen., nov., sp., nov. are proposed. Isolate RKEM611T ( = NCCB 100521T = LMG 28452T) is the type strain.
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Gilvimarinus polysaccharolyticus sp. nov., an agar-digesting bacterium isolated from seaweed, and emended description of the genus Gilvimarinus
More LessA taxonomic study was carried out on strain YN3T, which was isolated from a seaweed sample taken from the coast of Weihai, China. The bacterium was Gram-stain-negative, rod-shaped, and could grow at pH 5.0–10.0 and 4–32 °C in the presence of 0–9.0 % (w/v) NaCl. Strain YN3T was positive for the hydrolysis of polysaccharides, such as agar, starch and xylan. The predominant respiratory quinone was ubiquinone-8. The major fatty acids were C16 : 1ω7c and/or iso-C15 : 0 2-OH, C16 : 0 and C18 : 1ω7c. The main polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine, and two unidentified glycolipids. The genomic DNA G+C content was 49.4 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain YN3T should be assigned to the genus Gilvimarinus . ‘Gilvimarinus agarilyticus’ KCTC 23325 and Gilvimarinus chinensis QM42T had the closest phylogenetic relationship to strain YN3T, and showed 97.9 % and 95.8 % sequence similarities, respectively. On the basis of phenotypic, chemotaxonomic and genotypic data and DNA–DNA hybridization studies, we propose that strain YN3T represents a novel species of the genus Gilvimarinus , for which the name Gilvimarinus polysaccharolyticus sp. nov. is proposed. The type strain is YN3T ( = KCTC 32438T = JCM 19198T). An emended description of the genus Gilvimarinus is also presented.
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Lysobacter terrae sp. nov. isolated from Aglaia odorata rhizosphere soil
A Gram-stain negative, facultatively anaerobic, non-motile, rod-shaped bacterium, designated strain THG-A13T, was isolated from Aglaia odorata rhizosphere soil in Gyeonggi-do, Republic of Korea. Based on 16S rRNA gene sequence comparisons, strain THG-A13T had close similarity with Lysobacter niabensis GH34-4T (98.5 %), Lysobacter oryzae YC6269T (97.9 %) and Lysobacter yangpyeongensis GH19-3T (97.3 %). Chemotaxonomic data revealed that strain THG-A13T possesses ubiquinone-8 (Q8) as the predominant isoprenoid quinone and iso-C15 : 0, iso-C16 : 0 and iso-C17 : 1ω9c as the major fatty acids. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol) and diphosphatidylglycerol. The G+C content was 66.3 mol%. The DNA–DNA relatedness values between strain THG-A13T and its closest phylogenetic neighbours were below 18.0 %. These data corroborated the affiliation of strain THG-A13T to the genus Lysobacter . These data suggest that the isolate represents a novel species for which the name Lysobacter terrae sp. nov. is proposed, with THG-A13T as the type strain ( = KACC 17646T = JCM 19613T).
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Reclassification of Bacteriovorax marinus as Halobacteriovorax marinus gen. nov., comb. nov. and Bacteriovorax litoralis as Halobacteriovorax litoralis comb. nov.; description of Halobacteriovoraceae fam. nov. in the class Deltaproteobacteria
More LessThe taxonomic status of saltwater Bdellovibrio -like prokaryotic predators has been revised to assign species to Halobacteriovorax gen. nov. A reclassification of Bacteriovorax marinus as Halobacteriovorax marinus comb. nov. (type strain ATCC BAA-682T = DSM 15412T) and Bacteriovorax litoralis as Halobacteriovorax litoralis comb. nov. (type strain ATCC BAA-684T = DSM 15409T) is proposed. This revision is necessary because a previous proposal to retain saltwater isolates as species of Bacteriovorax and reclassify Bacteriovorax stolpii as Bacteriolyticum stolpii was not approved. The type species of a genus cannot be reassigned to another genus. Bacteriovorax stolpii is thus retained as the type species of Bacteriovorax and Halobacteriovorax marinus is the type species of Halobacteriovorax and of Halobacteriovoraceae fam. nov.
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Legionella norrlandica sp. nov., isolated from the biopurification systems of wood processing plants
Fourteen isolates of an unknown species identified as belonging to the genus Legionella by selective growth on BCYE agar were isolated from the biopurification systems of three different wood processing plants. The mip gene sequence of all 14 isolates was identical and a close match alignment revealed 86 % sequence similarity with Legionella pneumophila serogroup 8. The whole genome of isolate LEGNT was sequenced, and a phylogenetic tree based on the alignment of 16S rRNA, mip, rpoB, rnpB and the 23S–5S intergenic region clustered LEGNT with L. pneumophila ATCC 33152T. Analysis of virulence factors showed that strain LEGNT carries the majority of known L. pneumophila virulence factors. An amoeba infection assay performed to assess the pathogenicity of strain LEGNT towards Acanthamoeba castellanii showed that it can establish a replication vacuole in A. castellanii but does not significantly affect replication of amoebae. Taken together, the results confirm that strain LEGNT represents a novel species of the genus Legionella , for which the name Legionella norrlandica sp. nov. is proposed. The type strain is LEGNT ( = ATCC BAA-2678T = CCUG 65936T).
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Pseudomonas granadensis sp. nov., a new bacterial species isolated from the Tejeda, Almijara and Alhama Natural Park, Granada, Spain
More LessDuring the course of screening bacterial isolates as sources of as-yet unknown bioactive compounds with pharmaceutical applications, a chemo-organotrophic, Gram-negative bacterium was isolated from a soil sample taken from the Tejeda, Almijara and Alhama Natural Park, Granada, Spain. Strain F-278,770T was oxidase- and catalase-positive, aerobic, with a respiratory type of metabolism with oxygen as the terminal electron acceptor, non-spore-forming and motile by one polar flagellum, although some cells had two polar flagella. Phylogenetic analysis of the 16S rRNA, gyrB, rpoB and rpoD genes revealed that strain F-278,770T belongs to the Pseudomonas koreensis subgroup (Pseudomonas fluorescens lineage), with Pseudomonas moraviensis , P. koreensis , P. baetica and P. helmanticensis as its closest relatives. Chemotaxonomic traits such as polar lipid and fatty acid compositions and G+C content of genomic DNA corroborated the placement of strain F-278,770T in the genus Pseudomonas . DNA–DNA hybridization assays and phenotypic traits confirmed that this strain represents a novel species of the genus Pseudomonas , for which the name Pseudomonas granadensis sp. nov. is proposed. The type strain is F-278,770T ( = DSM 28040T = LMG 27940T).
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Volumes and issues
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Volume 74 (2024)
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Volume 73 (2023)
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Volume 72 (2022 - 2023)
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Volume 71 (2020 - 2021)
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Volume 70 (2020)
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Volume 69 (2019)
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Volume 68 (2018)
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Volume 67 (2017)
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Volume 66 (2016)
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Volume 65 (2015)
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Volume 64 (2014)
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Volume 63 (2013)
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Volume 62 (2012)
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Volume 61 (2011)
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Volume 60 (2010)
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Volume 59 (2009)
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Volume 58 (2008)
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Volume 57 (2007)
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Volume 56 (2006)
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Volume 55 (2005)
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Volume 54 (2004)
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Volume 53 (2003)
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Volume 52 (2002)
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Volume 51 (2001)
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Volume 50 (2000)
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Volume 49 (1999)
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Volume 48 (1998)
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Volume 47 (1997)
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Volume 46 (1996)
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Volume 45 (1995)
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Volume 44 (1994)
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Volume 43 (1993)
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Volume 42 (1992)
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Volume 41 (1991)
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Volume 40 (1990)
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Volume 39 (1989)
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Volume 38 (1988)
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Volume 37 (1987)
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Volume 36 (1986)
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Volume 35 (1985)
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Volume 34 (1984)
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Volume 33 (1983)
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Volume 32 (1982)
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Volume 31 (1981)
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Volume 30 (1980)
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Volume 29 (1979)
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Volume 28 (1978)
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Volume 27 (1977)
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Volume 26 (1976)
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Volume 25 (1975)
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Volume 24 (1974)
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Volume 23 (1973)
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Volume 22 (1972)
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Volume 21 (1971)
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Volume 20 (1970)
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Volume 19 (1969)
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Volume 18 (1968)
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Volume 17 (1967)
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Volume 16 (1966)
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Volume 15 (1965)
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Volume 14 (1964)
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Volume 13 (1963)
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Volume 12 (1962)
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Volume 11 (1961)
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Volume 10 (1960)
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Volume 9 (1959)
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Volume 8 (1958)
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Volume 7 (1957)
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Volume 6 (1956)
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Volume 5 (1955)
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Volume 4 (1954)
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Volume 3 (1953)
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Volume 2 (1952)
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Volume 1 (1951)