scholarly journals Leptospira mayottensis sp. nov., a pathogenic species of the genus Leptospira isolated from humans

2014 ◽  
Vol 64 (Pt_12) ◽  
pp. 4061-4067 ◽  
Author(s):  
Pascale Bourhy ◽  
Louis Collet ◽  
Sylvain Brisse ◽  
Mathieu Picardeau
Keyword(s):  
Sequence Analysis ◽  
Dna Hybridization ◽  
Genomic Dna ◽  
Type Strain ◽  
Type Species ◽  
Novel Species ◽  
Average Nucleotide Identity ◽  
Content Type ◽  
Link Type ◽  
Leptospira Borgpetersenii

A group of strains representing species of the genus Leptospira, isolated from patients with leptospirosis in Mayotte (Indian Ocean), were previously found to be considerably divergent from other known species of the genus Leptospira . This was inferred from sequence analysis of rrs (16S rRNA) and other genetic loci and suggests that they belong to a novel species. Two strains from each serogroup currently identified within this novel species were studied. Spirochaete, aerobic, motile, helix-shaped strains grew well at 30–37 °C, but not at 13 °C or in the presence of 8-azaguanine. Draft genomes of the strains were also analysed to study the DNA relatedness with other species of the genus Leptospira . The new isolates formed a distinct clade, which was most closely related to Leptospira borgpetersenii , in multilocus sequence analysis using concatenated sequences of the genes rpoB, recA, fusA, gyrB, leuS and sucA. Analysis of average nucleotide identity and genome-to-genome distances, which have recently been proposed as reliable substitutes for classical DNA–DNA hybridization, further confirmed that these isolates should be classified as representatives of a novel species. The G+C content of the genomic DNA was 39.5 mol%. These isolates are considered to represent a novel species, for which the name Leptospira mayottensis sp. nov. is proposed, with 200901116T ( = CIP 110703T = DSM 28999T) as the type strain.

scholarly journals Pantoea coffeiphila sp. nov., cause of the ‘potato taste’ of Arabica coffee from the African Great Lakes region

2015 ◽  
Vol 65 (Pt_1) ◽  
pp. 23-29 ◽  
Author(s):  
Dominique Gueule ◽  
Gérard Fourny ◽  
Elisabeth Ageron ◽  
Anne Le Flèche-Matéos ◽  
Mathias Vandenbogaert ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
Dna Hybridization ◽  
Type Strain ◽  
Novel Species ◽  
Gene Sequencing ◽  
Great Lakes Region ◽  
The Novel ◽  
Content Type ◽  
African Great Lakes ◽  
Link Type

Six isolates recovered from coffee seeds giving off a potato-like flavour were studied. Gene sequencing (rrs and rpoB) showed they belong to the genus Pantoea . By DNA–DNA hybridization, the isolates constituted a genomic species with less than 17 % relatedness to 96 strains representing enterobacterial species. Multilocus sequence analysis (gyrB, rpoB, atpD and infB genes) showed the isolates to represent a discrete species of the genus Pantoea . Nutritional versatility of the novel species was poor. The novel species is proposed as Pantoea coffeiphila sp.nov. and its type strain is Ca04T ( = CIP 110718T = DSM 28482T).

Companilactobacillus pabuli sp. nov., a lactic acid bacterium isolated from animal feed

2021 ◽  
Author(s):  
Ji Young Jung ◽  
Hye Kyeong Kang ◽  
Hyun Mi Jin ◽  
Sang-Soo Han ◽  
Young Chul Kwon ◽  
...  
Keyword(s):  
Lactic Acid ◽  
16S Rrna ◽  
Dna Hybridization ◽  
Type Species ◽  
Novel Species ◽  
Rrna Gene ◽  
Average Nucleotide Identity ◽  
Content Type ◽  
Link Type ◽  
The 16S Rrna Gene

A Gram-positive, facultative anaerobic, catalase-negative, non-motile, non-spore-forming and rod-shaped lactic acid bacterium strain, denoted as NFFJ11T and isolated from total mixed fermentation feed in the Republic of Korea, was characterized through polyphasic approaches, including sequence analyses of the 16S rRNA gene and housekeeping genes (rpoA and pheS), determination of average nucleotide identity and in silico DNA–DNA hybridization, fatty acid methyl ester analysis, and phenotypic characterization. Phylogenetic analyses based on 16S rRNA, rpoA and pheS gene sequences revealed that strain NFFJ11T belonged to the genus Companilactobacillus . The 16S rRNA gene sequence of strain NFFJ11T exhibited high similarity to Companilactobacillus formosensis S215T (99.66 %), Companilactobacillus farciminis Rv4 naT (99.53 %), Companilactobacillus crustorum LMG 23699T (99.19 %), Companilactobacillus futsaii YM 0097T (99.06 %), Companilactobacillus zhachilii HBUAS52074T (98.86 %) and Companilactobacillus heilongiiangensis S4-3T (98.66 %). However, average nucleotide identity and in silico DNA–DNA hybridization values for these type strains were in the range of 79.90–92.93 % and 23.80–49.30 %, respectively, which offer evidence that strain NFFJ11T belongs to a novel species of the genus Companilactobacillus . The cell-wall peptidoglycan type was A4α (l-Lys–d-Asp) and the G+C content of the genomic DNA was 35.7 mol%. The main fatty acids of strain NFFJ11T were C18 : 1  ω9c (43.3 %), C16 : 0 (20.1 %) and summed feature 7 (18.3 %; comprising any combination of C19 : 1  ω7c, C19 : 1  ω6c and C19 : 0 cyclo ω10c). Through polyphasic taxonomic analysis, it was observed that strain NFFJ11T represents a novel species belonging to the genus Companilactobacillus , for which the name Companilactobacillus pabuli sp. nov. is proposed. The type strain is NFFJ11T (= KACC 21771T= JCM 34088T).

scholarly journals Xanthomonas hydrangeae sp. nov., a novel plant pathogen isolated from Hydrangea arborescens

2021 ◽  
Vol 71 (12) ◽  
Author(s):  
Nay C. Dia ◽  
Johan Van Vaerenbergh ◽  
Cinzia Van Malderghem ◽  
Jochen Blom ◽  
Theo H. M. Smits ◽  
...  
Keyword(s):  
Dna Hybridization ◽  
Type Strain ◽  
Type Species ◽  
Novel Species ◽  
Close Relation ◽  
Genome Sequences ◽  
Content Type ◽  
Phylogenetic Characterization ◽  
Link Type ◽  
Amplification Assay

This paper describes a novel species isolated in 2011 and 2012 from nursery-grown Hydrangea arborescens cultivars in Flanders, Belgium. After 4 days at 28 °C, the strains yielded yellow, round, convex and mucoid colonies. Pathogenicity of the strains was confirmed on its isolation host, as well as on Hydrangea quercifolia. Analysis using MALDI-TOF MS identified the Hydrangea strains as belonging to the genus Xanthomonas but excluded them from the species Xanthomonas hortorum . A phylogenetic tree based on gyrB confirmed the close relation to X. hortorum . Three fatty acids were dominant in the Hydrangea isolates: anteiso-C15 : 0, iso-C15 : 0 and summed feature 3 (C16 : 1  ω7c/C16 : 1  ω6c). Unlike X. hortorum pathovars, the Hydrangea strains were unable to grow in the presence of lithium chloride and could only weakly utilize d-fructose-6-PO4 and glucuronamide. Phylogenetic characterization based on multilocus sequence analysis and phylogenomic characterization revealed that the strains are close to, yet distinct from, X. hortorum . The genome sequences of the strains had average nucleotide identity values ranging from 94.35–95.19 % and in silico DNA–DNA hybridization values ranging from 55.70 to 59.40 % to genomes of the X. hortorum pathovars. A genomics-based loop-mediated isothermal amplification assay was developed which was specific to the Hydrangea strains for its early detection. A novel species, Xanthomonas hydrangeae sp. nov., is proposed with strain LMG 31884T (=CCOS 1956T) as the type strain.

Arenimonas daechungensis sp. nov., isolated from the sediment of a eutrophic reservoir

2013 ◽  
Vol 63 (Pt_2) ◽  
pp. 484-489 ◽  
Author(s):  
Hangsak Huy ◽  
Long Jin ◽  
Young-Ki Lee ◽  
Keun Chul Lee ◽  
Jung-Sook Lee ◽  
...  
Keyword(s):  
Dna Hybridization ◽  
Type Strain ◽  
Type Species ◽  
Novel Species ◽  
Genetic Data ◽  
Rrna Gene ◽  
16S Rrna Gene Sequences ◽  
Gram Negative ◽  
Content Type ◽  
Link Type

A Gram-negative, non-motile, non-spore-forming and rod-shaped bacterial strain, CH15-1T, was isolated from a sediment sample taken from Daechung Reservoir, South Korea, during the late-blooming period of cyanobacteria. Strain CH15-1T grew optimally at pH 7.0 and 30 °C. A phylogenetic analysis based on 16S rRNA gene sequences confirmed that strain CH15-1T belongs to the genus Arenimonas with the similarity range from 92.6–97.4 % and is closely related to Arenimonas oryziterrae YC6267T (97.4 %), Arenimonas composti TR7-09T (95.4 %), Arenimonas metalli CF5-1T (94.7 %), Arenimonas malthae CC-JY-1T (94.6 %) and Arenimonas donghaensis HO3-R19T (92.6 %). However, the DNA–DNA hybridization between strain CH15-1T and the closest strain, Arenimonas oryziterrae YC6267T, was 8.9–12.9 %. The DNA G+C content was 63.9 mol% compared to A. oryziterrae YC626T, 65.8 mol%. Strain CH15-1T included Q-8 as the major ubiquinone and phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and phosphatidylmonomethylethanolamine as the major polar lipids. The major fatty acids (>5 %) were iso-C15 : 0, iso-C16 : 0, iso-C14 : 0, iso-C11 : 0 3-OH, iso-C17 : 0 and summed feature 9 (iso-C17 : 1ω9c and/or C16 : 0 10-methyl). On the basis of phylogenetic, phenotypic and genetic data, strain CH15-1T was classified in the genus Arenimonas as a member of a novel species, for which the name Arenimonas daechungensis sp. nov. is proposed. The type strain is CH15-1T ( = KCTC 23553T = DSM 24763T).

scholarly journals Streptomyces phaeolivaceus sp. nov. and Streptomyces broussonetiae sp. nov., isolated from the leaves and rhizosphere soil of Broussonetia papyrifera

2020 ◽  
Vol 70 (12) ◽  
pp. 6458-6467 ◽  
Author(s):  
Ping Mo ◽  
Jun Liu ◽  
Yunlin Zhao ◽  
Zhenggang Xu
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
Type Strain ◽  
Type Species ◽  
Rhizosphere Soil ◽  
Novel Species ◽  
Rrna Gene ◽  
Broussonetia Papyrifera ◽  
Content Type ◽  
Link Type

Two novel actinobacteria, designated strains GY16T and T44T, were isolated from the leaves and rhizosphere soil of Broussonetia papyrifera, respectively. A polyphasic approach was used for determining their taxonomic position. Results of 16S rRNA gene sequence analysis indicated that strain GY16T exhibited highest similarities to Streptomyces cinereoruber subsp. fructofermentans CGMCC 4.1593T (98.82 %), Streptomyces deccanensis KCTC 19241T (98.76 %), Streptomyces scabiei NRRL B-16523T (98.69 %), Streptomyces europaeiscabiei KACC 20186T (98.69 %) and Streptomyces rishiriensis NBRC 13407T (98.69 %), and strain T44T showed 99.2, 99.1, 99.1 and <98.7 % sequence similarities to Streptomyces filipinensis CGMCC 4.1452T, Streptomyces achromogenes subsp. achromogenes DSM 40028T, Streptomyces durhamensis DSM 40539T and other Streptomyces species, respectively. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain GY16T formed an independent subclade, which indicated that strain GY16T should belong to a potential novel species; and strain T44T was closely related to S. filipinensis CGMCC 4.1452T, S. achromogenes subsp. achromogenes DSM 40028T, S. durhamensis DSM 40539T and S. yokosukanensis DSM 40224T. However, the multilocus sequence analysis evolutionary distance, average nucleotide identity and DNA–DNA hybridization values between closely related relatives were far from the species-level thresholds. In addition, phenotypic and chemotaxonomic characteristics further confirmed that strains GY16T and T44T belonged to two distinct species. Based on these results, it is concluded that the isolated strains represent novel species within the genus Streptomyces , for which the names Streptomyces phaeolivaceus sp. nov. (type strain GY16T=CICC 24807T=KCTC 49326T) and Streptomyces broussonetiae sp. nov. (type strain T44T=CICC 24819T=JCM 33918T) are proposed.

scholarly journals Leptospira dzianensis and Leptospira putramalaysiae are later heterotypic synonyms of Leptospira yasudae and Leptospira stimsonii

2021 ◽  
Author(s):  
Arnau Casanovas-Massana ◽  
Antony T. Vincent ◽  
Pascale Bourhy ◽  
Vasantha Kumari Neela ◽  
Frederic J. Veyrier ◽  
...  
Keyword(s):  
Type Strain ◽  
Type Species ◽  
Novel Species ◽  
Nucleotide Identity ◽  
Average Nucleotide Identity ◽  
Content Type ◽  
Link Type ◽  
Genome Comparisons

Leptospira dzianensis and Leptospira putramalaysiae were recently described as novel species and published almost concurrently with Leptospira yasudae and Leptospira stimsonii . Genome comparisons based on average nucleotide identity of the type strain genomes indicate that L. dzianensis and L. putramalaysiae are conspecific with L. yasudae and L. stimsonii , respectively. Based on the rules of priority, L. dzianensis should be reclassified as a later heterotypic synonym of L. yasudae , and L. putramalaysiae should be reclassified as a later heterotypic synonym of L. stimsonii .

Sphingopyxis rigui sp. nov. and Sphingopyxis wooponensis sp. nov., isolated from wetland freshwater, and emended description of the genus Sphingopyxis

2013 ◽  
Vol 63 (Pt_4) ◽  
pp. 1297-1303 ◽  
Author(s):  
Keun Sik Baik ◽  
Han Na Choe ◽  
Seong Chan Park ◽  
Yeoung Min Hwang ◽  
Eun Mi Kim ◽  
...  
Keyword(s):  
Dna Hybridization ◽  
Type Strain ◽  
Type Species ◽  
Novel Species ◽  
Sequence Similarity ◽  
Pcr Analysis ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
Emended Description

Two yellow-pigmented, Gram-reaction-negative strains, designated 01SU5-PT and 03SU3-PT, were isolated from the freshwater of Woopo wetland, Republic of Korea. Both strains were aerobic, non-motile and catalase-negative. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the two isolates belong to the genus Sphingopyxis , showing the highest level of sequence similarity with respect to Sphingopyxis witflariensis W-50T (95.4–95.7 %). The two novel isolates shared 99.4 % sequence similarity. DNA–DNA hybridization between the isolates and the type strain of S. witflariensis clearly suggested that strains 01SU5-PT and 03SU3-PT represent two separate novel species in the genus Sphingopyxis . The two strains displayed different fingerprints after PCR analysis using the repetitive primers BOX, ERIC and REP. Several phenotypic characteristics served to differentiate these two isolates from recognized members of the genus Sphingopyxis . The data from the polyphasic study presented here indicated that strains 01SU5-PT and 03SU3-PT should be classified as representing novel species in the genus Sphingopyxis , for which the names Sphingopyxis rigui sp. nov. and Sphingopyxis wooponensis sp. nov., respectively, are proposed. The type strain of Sphingopyxis rigui sp. nov. is 01SU5-PT ( = KCTC 23326T = JCM 17509T) and the type strain of Sphingopyxis wooponensis sp. nov. is 03SU3-PT ( = KCTC 23340T = JCM 17547T).

scholarly journals Re-examination of the taxonomic status of Enterobacter helveticus, Enterobacter pulveris and Enterobacter turicensis as members of the genus Cronobacter and their reclassification in the genera Franconibacter gen. nov. and Siccibacter gen. nov. as Franconibacter helveticus comb. nov., Franconibacter pulveris comb. nov. and Siccibacter turicensis comb. nov., respectively

2014 ◽  
Vol 64 (Pt_10) ◽  
pp. 3402-3410 ◽  
Author(s):  
Roger Stephan ◽  
Christopher J. Grim ◽  
Gopal R. Gopinath ◽  
Mark K. Mammel ◽  
Venugopal Sathyamoorthy ◽  
...  
Keyword(s):  
Dna Hybridization ◽  
Type Strain ◽  
Type Species ◽  
Biochemical Characterization ◽  
Novel Species ◽  
Taxonomic Status ◽  
New Genera ◽  
Content Type ◽  
Link Type ◽  
Genome Scale

Recently, a taxonomical re-evaluation of the genus Enterobacter , based on multi-locus sequence typing (MLST) analysis, has led to the proposal that the species Enterobacter pulveris , Enterobacter helveticus and Enterobacter turicensis should be reclassified as novel species of the genus Cronobacter . In the present work, new genome-scale analyses, including average nucleotide identity, genome-scale phylogeny and k-mer analysis, coupled with previously reported DNA–DNA hybridization values and biochemical characterization strongly indicate that these three species of the genus Enterobacter are not members of the genus Cronobacter , nor do they belong to the re-evaluated genus Enterobacter . Furthermore, data from this polyphasic study indicated that all three species constitute two new genera. We propose reclassifying Enterobacter pulveris and Enterobacter helveticus in the genus Franconibacter gen. nov. as Franconibacter pulveris comb. nov. (type strain 601/05T = LMG 24057T = DSM 19144T) and Franconibacter helveticus comb. nov. (type strain 513/05T = LMG 23732T = DSM 18396T), respectively, and Enterobacter turicensis in the genus Siccibacter gen. nov. as Siccibacter turicensis comb. nov. (type strain 508/05T = LMG 23730T = DSM 18397T).

scholarly journals Pseudomonas karstica sp. nov. and Pseudomonas spelaei sp. nov., isolated from calcite moonmilk deposits from caves

2020 ◽  
Vol 70 (9) ◽  
pp. 5131-5140 ◽  
Author(s):  
Pavel Švec ◽  
Marcel Kosina ◽  
Michal Zeman ◽  
Pavla Holochová ◽  
Stanislava Králová ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Type Species ◽  
Novel Species ◽  
Housekeeping Genes ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type

A taxonomic study of two fluorescent Pseudomonas strains (HJ/4T and SJ/9/1T) isolated from calcite moonmilk samples obtained from two caves in the Moravian Karst in the Czech Republic was carried out. Results of initial 16S rRNA gene sequence analysis assigned both strains into the genus Pseudomonas and showed Pseudomonas yamanorum 8H1T as their closest neighbour with 99.8 and 99.7 % 16S rRNA gene similarities to strains HJ/4T and SJ/9/1T, respectively. Subsequent sequence analysis of rpoD, rpoB and gyrB housekeeping genes confirmed the highest similarity of both isolates to P. yamanorum 8H1T, but phylogeny and sequences similarities implied that they are representatives of two novel species within the genus Pseudomonas . Further study comprising whole-genome sequencing followed by average nucleotide identity and digital DNA–DNA hybridization calculations, repetitive sequence-based PCR fingerprinting with the REP and ERIC primers, automated ribotyping with the EcoRI restriction endonuclease, cellular fatty acid analysis, quinone and polar lipid characterization, and extensive biotyping confirmed clear separation of both analysed strains from the remaining Pseudomonas species and showed that they represent two novel species within the genus Pseudomonas for which the names Pseudomonas karstica sp. nov. (type strain HJ/4T=CCM 7891T=LMG 27930T) and Pseudomonas spelaei sp. nov. (type strain SJ/9/1T=CCM 7893T=LMG 27931T) are suggested.

scholarly journals Revisiting Corynebacterium glyciniphilum (ex Kubota et al., 1972) sp. nov., nom. rev., isolated from putrefied banana

2015 ◽  
Vol 65 (Pt_1) ◽  
pp. 177-182 ◽  
Author(s):  
Arwa Al-Dilaimi ◽  
Hanna Bednarz ◽  
Alexander Lömker ◽  
Karsten Niehaus ◽  
Jörn Kalinowski ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dna Hybridization ◽  
Type Strain ◽  
Type Species ◽  
Novel Species ◽  
Morphological Characterization ◽  
Content Type ◽  
Phylogenetic Characterization ◽  
Ph Values ◽  
Link Type

A strain of a species of the genus Corynebacterium , designated AJ 3170T, was isolated during the 1980s from putrefied bananas. Since then, there have been no further updates on the description of the strain or its phylogenetic classification. However, phylogenetic analysis of this strain using 16S rRNA and in silico DNA–DNA hybridization has confirmed that it is a member of the genus Corynebacterium and that strain AJ 3170T clusters with Corynebacterium variabile DSM 44702T, Corynebacterium terpenotabidum Y-11T and Corynebacterium nuruki S6-4T in one subgroup. Furthermore, a combination of enzymatic, chemical, and morphological characterization techniques was applied in order to describe strain AJ 3170T further. The strain grew well at pH values of 6–10 and at temperatures of 30–41 °C. The major fatty acids were C16 : 0 (42.15 %), C18 : 1ω9c (41.6 %) and C18 : 0 10-methyl (TBSA) (8.56 %). The whole-cell sugars were determined to comprise galactose, arabinose and ribose. On the basis of this phenotypic, chemotaxonomic and phylogenetic characterization, it is proposed that strain AJ 3170T represents a novel species, for which the name Corynebacterium glyciniphilum sp. nov. is proposed; the type strain is AJ 3170T ( = DSM 45795T = ATCC 21341T).

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