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Volume 59,
Issue 8,
2009
Volume 59, Issue 8, 2009
- Notification List
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Notification that new names and new combinations have appeared in volume 59, part 5, of the IJSEM
This listing of names published in a previous issue of the IJSEM is provided as a service to bacteriology to assist in the recognition of new names and new combinations. This procedure was proposed by the Judicial Commission [Minute 11(ii), Int J Syst Bacteriol 41 (1991), p. 185]. The names given herein are listed according to the Rules of priority (i.e. page number and order of valid publication of names in the original articles). Taxonomic opinions included in this List (i.e. the creation of synonyms or the emendation of circumscriptions) cannot be considered as validly published nor, in any other way, approved by the International Committee on Systematics of Prokaryotes and its Judicial Commission.
- Top
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- New Taxa
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- Actinobacteria
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Transfer of Actinomadura spadix Nonomura and Ohara 1971 to Actinoallomurus spadix gen. nov., comb. nov., and description of Actinoallomurus amamiensis sp. nov., Actinoallomurus caesius sp. nov., Actinoallomurus coprocola sp. nov., Actinoallomurus fulvus sp. nov., Actinoallomurus iriomotensis sp. nov., Actinoallomurus luridus sp. nov., Actinoallomurus purpureus sp. nov. and Actinoallomurus yoronensis sp. nov.
More LessTen actinomycete strains that form chains of spiral or looped spores were isolated from soil and dung samples in Japan. They contained d- and l-lysine, meso-diaminopimelic acid (A2pm), d-glutamic acid and d- and l-alanine in the cell-wall peptidoglycan, madurose as a characteristic whole-cell sugar, MK-9(H6) and MK-9(H8) as the major isoprenoid quinones and iso-C16 : 0 as the major cellular fatty acid and showed genomic DNA G+C contents of 69–74 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that the isolated actinomycete strains consistently formed a monophyletic cluster with Actinomadura spadix NBRC 14099T and a separate line of descent in the phylogenetic cluster of the family Thermomonosporaceae. Actinomadura spadix NBRC 14099T also contained d- and l-lysine in addition to meso-A2pm. This genetic and phenotypic evidence revealed that the actinomycete strains could be clearly differentiated from the other members of the family Thermomonosporaceae and that they warranted separate genus status. We conclude that Actinomadura spadix should be assigned the status of the type species of a new genus as Actinoallomurus spadix gen. nov., comb. nov. (type strain NBRC 14099T =ATCC 27298T =BCRC 13386T =CBS 261.72T =CIP 105479T =DSM 43459T =JCM 3146T =KCTC 9252T =NCIMB 11118T =NRRL B-16128T). Further, we conclude that the ten new isolates should be assigned to the novel species Actinoallomurus amamiensis sp. nov. (type strain TT00-28T =NBRC 103682T =KCTC 19537T), Actinoallomurus caesius sp. nov. (type strain A3015T =NBRC 103678T =KCTC 19535T), Actinoallomurus coprocola sp. nov. (type strain TT04-09T =NBRC 103688T =KCTC 19542T), Actinoallomurus fulvus sp. nov. (type strain TT99-66T =NBRC 103680T =KCTC 19536T), Actinoallomurus iriomotensis sp. nov. (type strain TT02-47T =NBRC 103685T =KCTC 19539T), Actinoallomurus luridus sp. nov. (type strain TT02-15T =NBRC 103683T =KCTC 19538T), Actinoallomurus purpureus sp. nov. (type strain TTN02-30T =NBRC 103687T =KCTC 19541T) and Actinoallomurus yoronensis sp. nov. (type strain TTN02-22T =NBRC 103686T =KCTC 19540T).
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Georgenia thermotolerans sp. nov., an actinobacterium isolated from forest soil
More LessA Gram-positive bacterium strain, designated TT02-04T, was isolated from a forest soil sample in Iriomote Island, Japan, and its taxonomic position was investigated by using a polyphasic approach. The peptidoglycan type of this organism was found to be A4α and lysine was the diagnostic cell-wall diamino acid of the peptidoglycan. The only menaquinone was MK-8(H4), and the major fatty acid was anteiso-C15 : 0. Galactose was detected as the cell-wall sugar. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylinositol mannosides. The DNA G+C content was 73.0 mol%. 16S rRNA gene sequencing studies indicated that strain TT02-04T was closely related to the type strains of Georgenia ruanii (99.0 %) and Georgenia muralis (97.7 %). However, DNA–DNA hybridization results and phenotypic characteristics revealed that the strain differed from the currently recognized species of the genus Georgenia. Therefore, strain TT02-04T represents a novel species of the genus Georgenia, for which the name Georgenia thermotolerans sp. nov. is proposed. The type strain is TT02-04T (=NBRC 104148T=DSM 21501T).
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Corynebacterium timonense sp. nov. and Corynebacterium massiliense sp. nov., isolated from human blood and human articular hip fluid
More LessGram-positive, facultatively anaerobic, rod-shaped bacteria were isolated from the blood of a patient with endocarditis (strain 5401744T) and from the hip joint fluid of a patient with an infected orthopaedic prosthesis (strain 5402485T). These strains were characterized by using a polyphasic taxonomic approach. Based on cellular morphology and biochemical criteria the two isolates were tentatively assigned to the genus Corynebacterium, although they did not correspond to any recognized species. The predominant fatty acids were a mix of C18 : 2 ω6,9c and anteiso-C18 : 0 (32.1 % of the total), C16 : 0 (26.3 %) and C18 : 1 ω9c (22.5 %) for strain 5402485T and C18 : 1 ω9c (36.4 %), C17 : 1 ω9c (27.1 %) and C16 : 0 (10.9 %) for strain 5401744T. Phylogenetic analysis based on 16S rRNA gene sequence comparisons showed that strain 5401744T was closely related to the type strains of Corynebacterium auris, Corynebacterium capitovis, Corynebacterium lipophiloflavum and Corynebacterium mycetoides (97.0, 96.6, 96.5 and 96.3 % similarity, respectively) and strain 5402485T was closely related to the type strains of Corynebacterium macginleyi, Corynebacterium accolens, Corynebacterium tuberculostearicum, Corynebacterium confusum, Corynebacterium mastitidis and Corynebacterium renale (95.6, 95.3, 95.3, 94.5, 94.0 and 93.5 %, respectively). On the basis of phenotypic data and phylogenetic inference, these isolates are considered to represent two novel species of the genus Corynebacterium, for which the names Corynebacterium timonense sp. nov. (type strain, 5401744T=CSUR P20T=CIP 109424T=CCUG 53856T) and Corynebacterium massiliense sp. nov. (type strain, 5402485T=CSUR P19T=CIP 109423T=CCUG 53857T) are proposed.
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Brevibacterium massiliense sp. nov., isolated from a human ankle discharge
More LessGram-positive, non-spore-forming rods, strain 5401308T, were isolated from a human ankle discharge. Based on cellular morphology and the results of biochemical testing, this strain was tentatively identified as an undescribed member of the genus Brevibacterium. The major fatty acids were anteiso-C15 : 0 (45.3 %), anteiso-C17 : 0 (19.2 %) and iso-C15 : 0 (18.3 %). Phylogenetic analysis based on 16S rRNA gene sequence comparison showed that the bacterium was closely related to the type strains of Brevibacterium mcbrellneri (96.3 % similarity) and Brevibacterium paucivorans (95.8 %). On the basis of phenotypic data and phylogenetic inference, it is proposed that this strain represents a novel species, designated Brevibacterium massiliense sp. nov.; the type strain is 5401308T (=CSUR P26T=CIP 109422T=CCUG 53855T).
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Gordonia kroppenstedtii sp. nov., a phenol-degrading actinomycete isolated from a polluted stream
More LessA phenol-degrading actinomycete, strain NP8-5T, was isolated from a polluted stream in Gumi, Korea. The strain was aerobic, Gram-positive-staining, non-motile and non-spore-forming, displayed a rod–coccus growth cycle, exhibited white opaque colonies on complex media and showed chemotaxonomic markers that were consistent with its classification in the genus Gordonia. Phylogenetic analysis, based on 16S rRNA gene sequencing, also showed that strain NP8-5T belonged to the genus Gordonia, sharing the highest levels of sequence similarity with Gordonia araii IFM 10211T, G. hydrophobica DSM 44015T and G. sinesedis NCIMB 13802T (96.4, 96.0 and 95.9 %, respectively) and forming a separate lineage within this genus. Combined phylogenetic and phenotypic data supported the conclusion that strain NP8-5T represents a novel species of the genus Gordonia, for which the name Gordonia kroppenstedtii sp. nov. is proposed. The type strain is NP8-5T (=KCTC 19360T =DSM 45133T).
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Bifidobacterium bombi sp. nov., from the bumblebee digestive tract
More LessGram-positive-staining, anaerobic, non-spore-forming, lactate- and acetate-producing bacterial strains were isolated from the digestive tracts of different bumblebee species (Bombus lucorum, Bombus pascuorum and Bombus lapidarius). All of the isolates produced fructose-6-phosphate phosphoketolase activity. A representative strain, BluCI/TPT, was characterized further. Cells of strain BluCI/TPT showed occasional bifurcation and irregular constrictions. The bacterium utilized a wide range of carbohydrates. Glucose was fermented to acetate and lactate. The DNA base composition was 47.2 mol% G+C. Complete 16S rRNA and partial hsp60 gene sequences were obtained and phylogenetic relationships were determined. Strain BluCI/TPT and related isolates were located in the actinobacterial cluster and were closely related to the genera Bifidobacterium, Scardovia, Aeriscardovia and Parascardovia. The results presented support the proposal of a novel species to accommodate strain BluCI/TPT, with the name Bifidobacterium bombi sp. nov.; the type strain is BluCI/TPT (=DSM 19703T =ATCC BAA-1567T).
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Zhihengliuella alba sp. nov., and emended description of the genus Zhihengliuella
More LessA Gram-positive, non-motile, white-pigmented, short rod actinobacterium, designated YIM 90734T, was isolated from a saline soil sample collected from Ganjiahu Suosuo Forest National Nature Reserve in Xinjiang province, north-west China, and its taxonomic position was investigated by using a polyphasic approach. Strain YIM 90734T grew optimally at 28–37 °C and pH 6.0–8.0 and in 5 % (w/v) NaCl. The peptidoglycan type was A4α, l-Lys–l-Ala–l-Glu and tyvelose and mannose were the major cell-wall sugars. The predominant menaquinones were MK-10 and MK-9. Major cellular fatty acids (>10 % of total) were anteiso-C15 : 0 and anteiso-C17 : 0. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, one unknown phospholipid and two unknown glycolipids. The DNA G+C content was 70.3 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM 90734T belonged to the genus Zhihengliuella. The 16S rRNA gene sequence similarity between strain YIM 90734T and the type strain of the only recognized Zhihengliuella species, Zhihengliuella halotolerans, was 97.7 %. However, the level of DNA–DNA relatedness of the two strains was 41.4 %. The DNA–DNA relatedness data and differential phenotypic properties, together with the phylogenetic distinctiveness, demonstrated that strain YIM 90734T could be differentiated from Z. halotolerans. On the basis of the data presented, strain YIM 90734T is considered to represent a novel species of the genus Zhihengliuella, for which the name Zhihengliuella alba sp. nov. is proposed. The type strain is YIM 90734T (=KCTC 19375T=DSM 21143T). The description of the genus Zhihengliuella has also been emended.
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Streptomyces hypolithicus sp. nov., isolated from an Antarctic hypolith community
More LessAs part of an enzyme-screening programme, an actinobacterium, strain HSM#10T, was isolated from a sample collected from the base of a translucent quartz rock in Miers Valley, eastern Antarctica. The isolate produced branching vegetative mycelium that was characteristic of filamentous actinobacteria. The chemotaxonomic characteristics of the strain suggested that HSM#10T should be classified as a member of the genus Streptomyces. Furthermore, phylogenetic analysis based on 16S rRNA gene sequences showed that the strain was closely related to members of the genus Streptomyces, which supports the classification of this strain within the family Streptomycetaceae. Phenotypic and phylogenetic results allowed strain HSM#10T to be differentiated from known streptomycetes. DNA–DNA hybridization data also showed that strain HSM#10T could be differentiated from its nearest phylogenetic neighbours Streptomyces chryseus DSM 40420T (53.55±3.15 % DNA relatedness), Streptomyces helvaticus DSM 40431T (38.75±2.75 %), Streptomyces flavidovirens DSM 40150T (30.7±2.90 %) and Streptomyces albidochromogenes DSM 41800T (33.9±0.10 %). Therefore, the name Streptomyces hypolithicus sp. nov. is proposed, with HSM#10T (=DSM 41950T =NRRL B-24669T) as the type strain.
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Microbacterium invictum sp. nov., isolated from homemade compost
Strain DC-200T was isolated from homemade compost produced from kitchen refuse and characterized using a polyphasic approach. The isolate was a Gram-positive motile short rod, facultatively aerobic, catalase-positive and oxidase-negative, and was able to grow at 10–37 °C, pH 6.0–9.5 and with up to 5 % of NaCl. The peptidoglycan was of the type B1 alpha and the muramic acid residues were glycolylated. The major fatty acids were anteiso-C15 : 0 and anteiso-C17 : 0. The predominant respiratory menaquinones were MK-11 and MK-12. The G+C content of the genomic DNA was 70 mol%. Based on the analysis of the 16S rRNA gene sequence, the closest phylogenetic neighbours of strain DC-200T were Microbacterium lacus A5E-52T (98.7 %) and Microbacterium aoyamense KV-492T (98.2 %). The phenetic characterization of the isolate supports its inclusion within the genus Microbacterium; however, its distinctive phenotypic features and the results from the 16S rRNA gene sequence analysis and the DNA–DNA hybridization study suggest that the isolate represents a novel species. The name Microbacterium invictum sp. nov. is proposed. The type strain is DC-200T (=DSM 19600T=LMG 24557T).
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Corynebacterium freiburgense sp. nov., isolated from a wound obtained from a dog bite
More LessA non-lipophilic, coryneform bacterium, isolated from a patient's wound obtained from a dog bite, was characterized by phenotypic, chemotaxonomic and molecular genetic methods. Chemotaxonomic features suggested assignment of the unknown bacterium to the genus Corynebacterium. The isolate exhibited the following peculiar features which made it possible to differentiate it phenotypically from all other medically relevant corynebacteria: older colonies exhibited a ‘spoke-wheel’ macroscopic morphology, colonies were strongly adherent to blood agar and the strain did not have pyrazinamidase activity, but was positive for β-galactosidase. 16S rRNA gene sequencing showed that the closest phylogenetic relative exhibited more than 3.9 % divergence from the unknown isolate. Based on phenotypic and molecular genetic data, it is proposed that the isolate should be classified as a representative of a novel species, Corynebacterium freiburgense sp. nov., with strain 1045T (=CCUG 56874T =DSM 45254T) as the type strain.
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Paraoerskovia marina gen. nov., sp. nov., an actinobacterium isolated from marine sediment
A Gram-positive-staining, facultatively anaerobic bacterial strain, CTT-37T, was isolated from a marine sediment sample collected from Tottori city, located on the shore of the Sea of Japan. A 16S rRNA gene sequence comparison indicated that the isolate represents a novel clade that clusters with members of the families Cellulomonadaceae and Sanguibacteraceae. Strain CTT-37T shared maximum 16S rRNA gene sequence similarity of 96.4 % with Oerskovia paurometabola DSM 14281T and 96.2 % with Oerskovia enterophila DSM 43852T. The DNA–DNA hybridization value between strain CTT-37T and O. enterophila JCM 7350T was 10–12 %. The following chemotaxonomic characteristics of strain CTT-37T were markedly different from those of strains in the genus Oerskovia. The cell wall contained l-serine in the peptidoglycan interpeptide bridge. The predominant menaquinone was MK-9 (H4); other quinones detected were MK-9 and MK-9(H2). The only polar lipid was phosphatidylglycerol and the G+C content of the DNA was 70 mol%. Differences in phenotypic characteristics and large phylogenetic distances between strain CTT-37T and all members of the genus Oerskovia supported the classification of CTT-37T within a new genus and species, for which the name Paraoerskovia marina gen. nov., sp. nov. is proposed. The type strain of Paraoerskovia marina is CTT-37T (=NBRC 104352T =DSM 21750T).
- Archaea
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Halorubrum chaoviator sp. nov., a haloarchaeon isolated from sea salt in Baja California, Mexico, Western Australia and Naxos, Greece
Three halophilic isolates, strains Halo-G*T, AUS-1 and Naxos II, were compared. Halo-G* was isolated from an evaporitic salt crystal from Baja California, Mexico, whereas AUS-1 and Naxos II were isolated from salt pools in Western Australia and the Greek island of Naxos, respectively. Halo-G*T had been exposed previously to conditions of outer space and survived 2 weeks on the Biopan facility. Chemotaxonomic and molecular comparisons suggested high similarity between the three strains. Phylogenetic analysis based on the 16S rRNA gene sequences revealed that the strains clustered with Halorubrum species, showing sequence similarities of 99.2–97.1 %. The DNA–DNA hybridization values of strain Halo-G*T and strains AUS-1 and Naxos II are 73 and 75 %, respectively, indicating that they constitute a single species. The DNA relatedness between strain Halo-G*T and the type strains of 13 closely related species of the genus Halorubrum ranged from 39 to 2 %, suggesting that the three isolates constitute a different genospecies. The G+C content of the DNA of the three strains was 65.5–66.5 mol%. All three strains contained C20C20 derivatives of diethers of phosphatidylglycerol, phosphatidylglyceromethylphosphate and phosphatidylglycerolsulfate, together with a sulfated glycolipid. On the basis of these results, a novel species that includes the three strains is proposed, with the name Halorubrum chaoviator sp. nov. The type strain is strain Halo-G*T (=DSM 19316T =NCIMB 14426T =ATCC BAA-1602T).
- Bacteroidetes
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Muricauda olearia sp. nov., isolated from crude-oil-contaminated seawater, and emended description of the genus Muricauda
More LessA Gram-staining-negative, rod-shaped and non-motile bacterium, designated CL-SS4T, was isolated from crude-oil-contaminated seawater from the west coast of Korea and was investigated by means of a polyphasic taxonomic approach. Strain CL-SS4T grew optimally at 25–30 °C, at pH 6.8–7.7 and in the presence of 2–3 % sea salts. The major fatty acids were iso-C17 : 0 3-OH, iso-C15 : 0 and iso-C15 : 1 G. The major isoprenoid quinone was MK-6. The DNA G+C content was 50.7 mol%. Analysis of the 16S rRNA gene sequence of strain CL-SS4T revealed that it was a member of the genus Muricauda, sharing 95.7–96.9 % sequence similarity with the type strains of Muricauda species and being most closely related to Muricauda aquimarina SW-63T. Phylogenetic analyses based on 16S rRNA gene sequences confirmed that strain CL-SS4T formed a deep lineage related to the genus Muricauda. Strain CL-SS4T was distinguishable from recognized Muricauda species on the basis of differential phenotypic characteristics and DNA G+C content. Based on these results, it is proposed that strain CL-SS4T represents a novel species of the genus Muricauda, for which the name Muricauda olearia sp. nov. is proposed. An emended description of the genus Muricauda is also proposed. The type strain is CL-SS4T (=KCCM 90075T=JCM 15563T).
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Paraprevotella clara gen. nov., sp. nov. and Paraprevotella xylaniphila sp. nov., members of the family ‘Prevotellaceae’ isolated from human faeces
More LessTwo anaerobic, non-spore-forming, pleomorphic, Gram-negative rods, designated YIT 11840T and YIT 11841T, were isolated from human faeces. The organisms were catalase-negative, produced succinic and acetic acids as end products of glucose metabolism and had DNA G+C contents of approximately 48–49 mol%. Although the phenotypic characteristics of these two strains were very similar, analysis of their 16S rRNA gene sequences showed that they are only distantly related (93.8 %), indicating that they represent two different species. A comparative sequence analysis revealed that these two species are members of the family ‘Prevotellaceae’ but are phylogenetically distant (<88 % sequence similarity) from the known genera belonging to this family, including Prevotella, Hallela and Xylanibacter. On the basis of the phylogenetic analysis and physiological tests, strains YIT 11840T and YIT 11841T represent two novel species of a new genus, for which the names Paraprevotella clara gen. nov., sp. nov. (type strain YIT 11840T =JCM 14859T =DSM 19731T), the type species, and Paraprevotella xylaniphila sp. nov. (type strain YIT 11841T =JCM 14860T =DSM 19681T) are proposed.
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Bacteroides graminisolvens sp. nov., a xylanolytic anaerobe isolated from a methanogenic reactor treating cattle waste
More LessA strictly anaerobic bacterial strain, designated XDT-1T, was isolated from plant residue from a methanogenic reactor treating waste from cattle farms. Cells of the strain were Gram-negative, non-motile, non-spore-forming rods. Haemin was required for growth. The strain utilized xylan as well as various sugars including arabinose, xylose, glucose, mannose, cellobiose, raffinose, starch and pectin. The strain produced acetate, propionate and succinate from saccharides in the presence of haemin. The optimum pH for growth was approximately 7.2 and the optimum growth temperature was 30–35 °C. The strain was sensitive to bile. The major cellular fatty acids of the strain were anteiso-C15 : 0 and iso-C17 : 0 3-OH, MK-10(H0) was the major respiratory quinone and the genomic DNA G+C content was 38.0 mol%. Phylogenetic analysis based on 16S rRNA gene sequences placed the strain in the phylum Bacteroidetes. The closest phylogenetic neighbour of strain XDT-1T was Bacteroides ovatus NCTC 11153T, with a 16S rRNA gene sequence similarity of 94.2 %. On the basis of data from the phylogenetic, physiological and chemotaxonomic analyses, strain XDT-1T represents a novel species of the genus Bacteroides, for which the name Bacteroides graminisolvens sp. nov. is proposed. The type strain is XDT-1T (=JCM 15093T =DSM 19988T).
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Solitalea koreensis gen. nov., sp. nov. and the reclassification of [Flexibacter] canadensis as Solitalea canadensis comb. nov.
A Gram-negative, rod-shaped, non-spore-forming bacterium, designated strain R2A36-4T, was isolated from greenhouse soil and subjected to a polyphasic taxonomic analysis. 16S rRNA gene sequence analysis revealed that the strain represented a novel member of the family Sphingobacteriaceae. Its nearest phylogenetic neighbour was the type strain of [Flexibacter] canadensis CIP 104802T (93.2 % 16S rRNA gene sequence similarity). Strain R2A36-4T and [F.] canadensis CIP 104802T fell in a distinct cluster within the family Sphingobacteriaceae. Strain R2A36-4T contained MK-7 as the predominant quinone. Strain R2A36-4T and [F.] canadensis CIP 104802T had iso-C15 : 0, iso-C17 : 0 3-OH, summed feature 3 and C15 : 1 ω6c as the major fatty acids. Strain R2A36-4T could be distinguished from [F.] canadensis on the basis of several physiological properties and fatty acid compositions. Based on phenotypic characterization and 16S rRNA gene sequence analysis, strain R2A36-4T represents a novel species within a new genus, for which the name Solitalea koreensis gen. nov., sp. nov. is proposed. The type strain of Solitalea koreensis is strain R2A36-4T (=KACC 12953T=DSM 21342T). It is also proposed that [F.] canadensis be transferred to this genus as Solitalea canadensis comb. nov. (type strain UASM 9DT=ATCC 29591T=CIP 104802T=DSM 3403T=NBRC 15130T=JCM 21819T=KACC 13276T=LMG 8368T).
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Lutaonella thermophila gen. nov., sp. nov., a moderately thermophilic member of the family Flavobacteriaceae isolated from a coastal hot spring
A yellow-pigmented, Gram-staining-negative, aerobic, non-motile, moderately thermophilic, rod-shaped bacterium, CC-MHSW-2T, was isolated from a coastal hot spring of Green Island (Lutao), located off Taituang, Taiwan. The 16S rRNA gene sequence analysis demonstrated that it shared <93.2 % sequence similarity with Aquimarina species. The organism was unable to produce acid from carbohydrates, but it could utilize a number of organic acids and amino acids. Menaquinone 6 (MK-6) was the major respiratory quinone and iso-C15 : 0, iso-C17 : 0 3-OH and summed feature 3 (comprising C16 : 1 ω7c and/or C16 : 1 ω6c) were the predominant fatty acids. This fatty acid profile distinguished the isolate from members of the genera Aquimarina, Tamlana, Zhouia, Leeuwenhoekiella and Cellulophaga. The DNA G+C content of strain CC-MHSW-2T was 39.7±1 mol%. On the basis of the 16S rRNA gene sequence analysis and the chemotaxonomic and physiological data, strain CC-MHSW-2T represents a novel genus and species in the family Flavobacteriaceae, for which the name Lutaonella thermophila gen. nov., sp. nov. is proposed. The type strain is CC-MHSW-2T (=KCTC 22538T =JCM 15069T).
- Firmicutes And Related Organisms
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Lactobacillus oeni sp. nov., from wine
More LessTen Lactobacillus strains, previously isolated from different Bobal grape wines from the Utiel-Requena Origin Denomination of Spain, were characterized phylogenetically, genotypically and phenotypically. The 16S rRNA genes were sequenced and phylogenetic analysis showed that they form a tight phylogenetic clade that is closely related to reference strains Lactobacillus satsumensis NRIC 0604T, ‘Lactobacillus uvarum’ 8 and Lactobacillus mali DSM 20444T. DNA–DNA hybridization results confirmed the separation of the strains from other Lactobacillus species. Genotypically, the strains could be differentiated from their closest neighbours by 16S amplified rDNA restriction analysis and random amplified polymorphic DNA patterns. The strains were Gram-staining-positive, facultatively anaerobic rods that did not exhibit catalase activity. Phenotypically, they could be distinguished from their closest relatives by several traits such as their inabilities to grow at pH 3.3, to ferment sucrose, amygdalin and arbutin or to hydrolyse aesculin. The characteristics of the ten wine isolates suggest that they represent a novel species, for which the name Lactobacillus oeni sp. nov. is proposed. The type strain is 59bT (=CECT 7334T =DSM 19972T).
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Bacillus canaveralius sp. nov., an alkali-tolerant bacterium isolated from a spacecraft assembly facility
More LessTwo Gram-positive, rod-shaped, alkali-tolerant (pH 10.5), endospore-forming bacteria (strains KSC SF8bT and KSC SF10a) were isolated from surfaces within the Payload Hazardous Servicing Facility, where robotic spacecraft are assembled and tested before launch, at the Kennedy Space Center at Cape Canaveral. Based on 16S rRNA gene sequence similarities, these strains were shown to belong to the family Bacillaceae and the genus Bacillus. The highest 16S rRNA gene sequence similarity was ∼97.5 %, observed between the novel strains and Bacillus selenatarsenatis SF-1T. Several phenotypic characteristics, such as growth with 10 % NaCl and assimilation of melibiose and lactose, were useful in the discrimination of this novel species from the closely related alkali-tolerant species Bacillus firmus and B. selenatarsenatis. DNA–DNA hybridization studies revealed reassociation values of less than 45 % between strain KSC SF8bT and its closest genotypic neighbours. The combination of unique phenotypic and genotypic characteristics allowed the differentiation of these alkali- and halotolerant spore-forming strains from related Bacillus species, and a novel species, Bacillus canaveralius sp. nov., is proposed. The type strain is KSC SF8bT (=ATCC BAA-1493T=MTCC 8908T).
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Volume 1 (1951)
Most Read This Month
