scholarly journals A multilocus phylogeny of the Streptomyces griseus 16S rRNA gene clade: use of multilocus sequence analysis for streptomycete systematics

2008 ◽  
Vol 58 (1) ◽  
pp. 149-159 ◽  
Author(s):  
Y. Guo ◽  
W. Zheng ◽  
X. Rong ◽  
Y. Huang
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Streptomyces Griseus ◽  
Multilocus Sequence Analysis ◽  
Rrna Gene ◽  
Multilocus Phylogeny

scholarly journals Taxonomic evaluation of the Streptomyces griseus clade using multilocus sequence analysis and DNA–DNA hybridization, with proposal to combine 29 species and three subspecies as 11 genomic species

2010 ◽  
Vol 60 (3) ◽  
pp. 696-703 ◽  
Author(s):  
Xiaoying Rong ◽  
Ying Huang
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Dna Hybridization ◽  
Streptomyces Griseus ◽  
Multilocus Sequence Analysis ◽  
Rrna Gene ◽  
Good Resolution ◽  
Species Definition ◽  
Genomic Species

Streptomyces griseus and related species form the biggest but least well-defined clade in the whole Streptomyces 16S rRNA gene tree. Multilocus sequence analysis (MLSA) has shown promising potential for refining Streptomyces systematics. In this investigation, strains of 18 additional S. griseus clade species were analysed and data from a previous pilot study were integrated in a larger MLSA phylogeny. The results demonstrated that MLSA of five housekeeping genes (atpD, gyrB, recA, rpoB and trpB) is better than the previous six-gene scheme, as it provides equally good resolution and stability and is more cost-effective; MLSA using three or four of the genes also shows good resolution and robustness for differentiating most of the strains and is therefore of value for everyday use. MLSA is more suitable for discriminating strains that show >99 % 16S rRNA gene sequence similarity. DNA–DNA hybridization (DDH) between strains with representative MLSA distances revealed a strong correlation between the data of MLSA and DDH. The 70 % DDH value for current species definition corresponds to a five-gene MLSA distance of 0.007, which could be considered as the species cut-off for the S. griseus clade. It is concluded that the MLSA procedure can be a practical, reliable and robust alternative to DDH for the identification and classification of streptomycetes at the species and intraspecies levels. Based on the data from MLSA and DDH, as well as cultural and morphological characteristics, 18 species and three subspecies of the S. griseus clade are considered to be later heterotypic synonyms of 11 genomic species: Streptomyces griseinus and Streptomyces mediolani as synonyms of Streptomyces albovinaceus; Streptomyces praecox as a synonym of Streptomyces anulatus; Streptomyces olivoviridis as a synonym of Streptomyces atroolivaceus; Streptomyces griseobrunneus as a synonym of Streptomyces bacillaris; Streptomyces cavourensis subsp. washingtonensis as a synonym of Streptomyces cyaneofuscatus; Streptomyces acrimycini, Streptomyces baarnensis, Streptomyces caviscabies and Streptomyces flavofuscus as synonyms of Streptomyces fimicarius; Streptomyces flavogriseus as a synonym of Streptomyces flavovirens; Streptomyces erumpens, ‘Streptomyces ornatus’ and Streptomyces setonii as synonyms of Streptomyces griseus; Streptomyces graminofaciens as a synonym of Streptomyces halstedii; Streptomyces alboviridis, Streptomyces griseus subsp. alpha, Streptomyces griseus subsp. cretosus and Streptomyces luridiscabiei as synonyms of Streptomyces microflavus; and Streptomyces californicus and Streptomyces floridae as synonyms of Streptomyces puniceus.

Description of Hymenobacter daejeonensis sp. nov., isolated from grass soil, based on multilocus sequence analysis of the 16S rRNA gene, gyrB and tuf genes

2018 ◽  
Vol 111 (12) ◽  
pp. 2283-2292 ◽  
Author(s):  
Long Jin ◽  
Xuewen Wu ◽  
So-Ra Ko ◽  
Feng-Jie Jin ◽  
Taihua Li ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Multilocus Sequence Analysis ◽  
Rrna Gene ◽  
The 16S Rrna Gene

scholarly journals Reclassification of Paralactobacillus selangorensis Leisner et al. 2000 as Lactobacillus selangorensis comb. nov.

2011 ◽  
Vol 61 (12) ◽  
pp. 2979-2983 ◽  
Author(s):  
Monique Haakensen ◽  
Vanessa Pittet ◽  
Barry Ziola
Keyword(s):  
Cell Division ◽  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Taxonomic Status ◽  
Multilocus Sequence Analysis ◽  
Rrna Gene ◽  
Phenotypic Information ◽  
The 16S Rrna Gene

The taxonomic status of Paralactobacillus selangorensis is described and, based on evidence presented, transfer of the species to the genus Lactobacillus with the name Lactobacillus selangorensis comb. nov. is proposed. This reclassification is supported by multilocus sequence analysis of the 16S rRNA gene and portions of the cpn60, pheS and rpoA genes. Mode of cell division and existing phenotypic information also show that P. selangorensis cannot be differentiated from the genus Lactobacillus. The type strain of Lactobacillus selangorensis comb. nov. is ATCC BAA-66T ( = LMG 17710T  = CIP 106482T).

scholarly journals Multilocus sequence analysis of phytopathogenic species of the genus Streptomyces

2011 ◽  
Vol 61 (10) ◽  
pp. 2525-2531 ◽  
Author(s):  
David P. Labeda
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
16S Rrna Gene Sequence ◽  
Multilocus Sequence Analysis ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Genus Streptomyces ◽  
Type Strains

The identification and classification of species within the genus Streptomyces is difficult because there are presently 576 species with validly published names and this number increases every year. The value of multilocus sequence analysis applied to the systematics of Streptomyces species has been well demonstrated in several recently published papers. In this study the sequence fragments of four housekeeping genes, atpD, recA, rpoB and trpB, were determined for the type strains of 10 known phytopathogenic species of the genus Streptomyces, including Streptomyces scabiei, Streptomyces acidiscabies, Streptomyces europaeiscabiei, Streptomyces luridiscabiei, Streptomyces niveiscabiei, Streptomyces puniciscabiei, Streptomyces reticuliscabiei, Streptomyces stelliscabiei, Streptomyces turgidiscabies and Streptomyces ipomoeae, as well as six uncharacterized phytopathogenic Streptomyces isolates. The type strains of 52 other species, including 19 species observed to be phylogenetically closely related to these, based on 16S rRNA gene sequence analysis, were also included in the study. Phylogenetic analysis of single gene alignments and a concatenated four-gene alignment demonstrated that the phytopathogenic species are taxonomically distinct from each other in spite of high 16S rRNA gene sequence similarities and provided a tool for the identification of unknown putative phytopathogenic Streptomyces strains at the species level.

scholarly journals Enterobacter muelleri sp. nov., isolated from the rhizosphere of Zea mays

2015 ◽  
Vol 65 (Pt_11) ◽  
pp. 4093-4099 ◽  
Author(s):  
Peter Kämpfer ◽  
John A. McInroy ◽  
Stefanie P. Glaeser
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
16S Rrna Gene Sequence ◽  
Multilocus Sequence Analysis ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Type Strains

A beige-pigmented, oxidase-negative bacterial strain (JM-458T), isolated from a rhizosphere sample, was studied using a polyphasic taxonomic approach. Cells of the isolate were rod-shaped and stained Gram-negative. A comparison of the 16S rRNA gene sequence of strain JM-458T with sequences of the type strains of closely related species of the genus Enterobacter showed that it shared highest sequence similarity with Enterobacter mori (98.7 %), Enterobacter hormaechei (98.3 %), Enterobacter cloacae subsp. dissolvens, Enterobacter ludwigii and Enterobacter asburiae (all 98.2 %). 16S rRNA gene sequence similarities to all other Enterobacter species were below 98 %. Multilocus sequence analysis based on concatenated partial rpoB, gyrB, infB and atpD gene sequences showed a clear distinction of strain JM-458T from its closest related type strains. The fatty acid profile of the strain consisted of C16 : 0, C17 : 0 cyclo, iso-C15 : 0 2-OH/C16 : 1ω7c and C18 : 1ω7c as major components. DNA–DNA hybridizations between strain JM-458T and the type strains of E. mori, E. hormaechei and E. ludwigii resulted in relatedness values of 29 % (reciprocal 25 %), 24 % (reciprocal 43 %) and 16 % (reciprocal 17 %), respectively. DNA–DNA hybridization results together with multilocus sequence analysis results and differential biochemical and chemotaxonomic properties showed that strain JM-458T represents a novel species of the genus Enterobacter, for which the name Enterobacter muelleri sp. nov. is proposed. The type strain is JM-458T ( = DSM 29346T = CIP 110826T = LMG 28480T = CCM 8546T).

scholarly journals Optimization of Multilocus Sequence Analysis for Identification of Species in the Genus Vibrio

2014 ◽  
Vol 80 (17) ◽  
pp. 5359-5365 ◽  
Author(s):  
Michael W. Gabriel ◽  
George Y. Matsui ◽  
Robert Friedman ◽  
Charles R. Lovell
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Sequence ◽  
Multilocus Sequence Analysis ◽  
Bootstrap Support ◽  
Rrna Gene ◽  
Gene Sequences ◽  
Accurate Identification ◽  
Content Type

ABSTRACTMultilocus sequence analysis (MLSA) is an important method for identification of taxa that are not well differentiated by 16S rRNA gene sequences alone. In this procedure, concatenated sequences of selected genes are constructed and then analyzed. The effects that the number and the order of genes used in MLSA have on reconstruction of phylogenetic relationships were examined. TherecA,rpoA,gapA, 16S rRNA gene,gyrB, andftsZsequences from 56 species of the genusVibriowere used to construct molecular phylogenies, and these were evaluated individually and using various gene combinations. Phylogenies from two-gene sequences employingrecAandrpoAin both possible gene orders were different. The addition of thegapAgene sequence, producing all six possible concatenated sequences, reduced the differences in phylogenies to degrees of statistical (bootstrap) support for some nodes. The overall statistical support for the phylogenetic tree, assayed on the basis of a reliability score (calculated from the number of nodes having bootstrap values of ≥80 divided by the total number of nodes) increased with increasing numbers of genes used, up to a maximum of four. No further improvement was observed from addition of the fifth gene sequence (ftsZ), and addition of the sixth gene (gyrB) resulted in lower proportions of strongly supported nodes. Reductions in the numbers of strongly supported nodes were also observed when maximum parsimony was employed for tree construction. Use of a small number of gene sequences in MLSA resulted in accurate identification ofVibriospecies.

scholarly journals Multilocus sequence analysis of the genus Kurthia, and a description of Kurthia populi sp. nov.

2015 ◽  
Vol 65 (Pt_11) ◽  
pp. 3788-3793 ◽  
Author(s):  
Wei Fang ◽  
Min-wei Guo ◽  
Zhi-yong Ruan ◽  
Han Xue ◽  
Lai-fa Wang ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Phylogenetic Analyses ◽  
Hybrid Poplar ◽  
Multilocus Sequence Analysis ◽  
Rrna Gene ◽  
Bacterial Strains ◽  
Dna Base Composition ◽  
Dna Reassociation

Four novel bacterial strains belonging to the genus Kurthia were isolated from the surface of a weevil of the family Curculionidae (strain 10y-14T), and from bark samples of hybrid poplar, Populus × euramericana (strains 6-3, 2-5 and 06C10-3-14), in Puyang, Henan Province, China. Phylogenetic analyses of the 16S rRNA gene and multilocus sequence analysis (MLSA) data showed that the four strains form a distinct cluster in the genus Kurthia, indicating that they all belong to a single taxon within the genus. DNA–DNA hybridization levels between strain 10y-4T and Kurthia huakuii LAM0618T and Kurthia massiliensis DSM 24639T were 58.31 and 53.92 %, respectively. This indicates that the four novel strains represent a species distinct from these two closely related species. The DNA G+C content of the novel strains was 42.1–42.6 %. The major fatty acids were iso-C15 : 0 and anteiso-C15 : 0.The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, an unknown phospholipid and unidentified aminophospholipids. The predominant menaquinones were MK-7 (90 %) and MK-6 (10 %). The major cell-wall amino acids were lysine, alanine, glutamic acid and glycine. On the basis of the MLSA and 16S rRNA gene sequence phylogenetic analyses, DNA–DNA reassociation values, DNA base composition, and biochemical and phenotypic characteristics, the four strains are considered to represent a novel species within the genus Kurthia, for which the name Kurthia populi sp. nov. is proposed. The type strain is 10y-14T ( = CFCC 11600T = KCTC 33522T).

scholarly journals Diagnosis of Fulminant Pneumonia Caused by Legionella pneumophila Serogroup 8 with the Sequence Analysis of the 16S rRNA Gene

2011 ◽  
Vol 225 (1) ◽  
pp. 65-69 ◽  
Author(s):  
Toshinori Kawanami ◽  
Kazuhiro Yatera ◽  
Kazumasa Fukuda ◽  
Kei Yamasaki ◽  
Masamizu Kunimoto ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Legionella Pneumophila ◽  
Rrna Gene ◽  
The 16S Rrna Gene
Sign in / Sign up

Export Citation Format

Share Document