Phylogeny of Photorhabdus and Xenorhabdus species and strains as determined by comparison of partial 16S rRNA gene sequences.

@article{Liu1997PhylogenyOP,
  title={Phylogeny of Photorhabdus and Xenorhabdus species and strains as determined by comparison of partial 16S rRNA gene sequences.},
  author={Jingrui Liu and Ralph E. Berry and George Poinar and Alison F. Moldenke},
  journal={International journal of systematic bacteriology},
  year={1997},
  volume={47 4},
  pages={
          948-51
        }
}
Partial 16S rRNA gene sequences of 16 strains of the genera Photorhabdus and Xenorhabdus were determined by direct sequencing of PCR products. Aligned sequences were subjected to phylogenetic analysis by maximum-likelihood and maximum-parsimony methods. Distance matrix and phylogenetic analysis did not separate the genera unambiguously. Taxonomic grouping of the bacteria closely paralleled taxonomic grouping of their nematode associates and their geographic origins. We found at least two well… 

Figures and Tables from this paper

PCR-Ribotyping of Xenorhabdus andPhotorhabdus Isolates from the Caribbean Region in Relation to the Taxonomy and Geographic Distribution of Their Nematode Hosts
TLDR
The occurrence of symbiotic bacterial genotypes was related to the ecological distribution of host nematodes, and for both genera the bacterial genotype diversity is in congruence with the host-nematode taxonomy.
Whole-genome-based revisit of Photorhabdus phylogeny: proposal for the elevation of most Photorhabdus subspecies to the species level and description of one novel species Photorhabdus bodei sp. nov., and one novel subspecies Photorhabdus laumondii subsp. clarkei subsp. nov.
TLDR
The phylogenetic relationships between all described Photorhabdus species and subspecies as well as 11 newly isolated symbiotic bacteria of Heterorhabditis nematodes, including the unreported bacterial partner of H. beicherriana are reconstructed using whole-genome sequencing and traditional techniques.
Evolution of the gyrB gene and the molecular phylogeny of Enterobacteriaceae: a model molecule for molecular systematic studies.
  • C. Dauga
  • Biology
    International journal of systematic and evolutionary microbiology
  • 2002
TLDR
Phylogenetic trees showing the evolutionary relatedness of Enterobacteriaceae based upon gyrB and 16S rRNA genes were compared to indicate that the genomes of these species are not completely mosaic and that molecular systematic studies can be carried out.
Identification of symbiotic bacteria (Photorhabdus and Xenorhabdus) from the entomopathogenic nematodes Heterorhabditis marelatus and Steinernema oregonense based on 16S rDNA sequence.
TLDR
Two species of entomopathogenic nematodes, Heterorhabditis marelatus and Steinernema oregonense, were described recently from the west coast of North America and the 16S sequence from the new Xenorhabdus isolate appears very similar to, although not identical to, that of X. bovienii, the common symbiont of S. feltiae.
Phylogeny of Steinernema Travassos, 1927 (Cephalobina: Steinernematidae) Inferred From Ribosomal DNA Sequences and Morphological Characters
TLDR
Interpretation of morphological character evolution on 6 trees inferred from sequence data and combined evidence suggests that many structural features of these nematodes are highly homoplastic, and that some structures previously used to hypothesize relationships represent ancestral character states.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 34 REFERENCES
Inability of the polyphasic approach to systematics to determine the relatedness of the genera Xenorhabdus and Photorhabdus.
Comparative analysis of the genes coding for 16S rRNA of the type strains of Xenorhabdus and Photorhabdus species indicates the close phylogenetic relationship of these two genera. However, distance
Phylogeny of twenty Thermus isolates constructed from 16S rRNA gene sequence data.
TLDR
The results are not consistent with groupings inferred from numerical taxonomy data but support the conjecture that the genus Thermus contains more species than the three currently recognized species.
Phylogeny of the phototrophic rhizobium strain BTAi1 by polymerase chain reaction-based sequencing of a 16S rRNA gene segment
TLDR
The sequence from BTAi1 and that from the free-living phototroph Rhodopseudomonas palustris both fall within the range of variation found among strains of the soybean symbiont Bradyrhizobium japonicum, suggesting that it would be appropriate to include all of these organisms in a single genus.
Phylogeny of some ascaridoid nematodes, inferred from comparison of 18S and 28S rRNA sequences.
  • S. Nadler
  • Biology
    Molecular biology and evolution
  • 1992
TLDR
Phylogenetic inference based on maximum-likelihood analysis of all sequence sites yielded a tree of topology similar to that of the parsimony result, and the inferred rate of rRNA sequence change along the branch leading to Parascaris equorum is not consistent with a clocklike model of evolution.
A numerical taxonomic study of the genus Xenorhabdus (Enterobacteriaceae) and proposed elevation of the subspecies of X. nematophilus to species.
TLDR
Data from a study of both phases of 21 strains of Xenorhabdus examined for 240 characters were subjected to numerical analysis, and the resultant dendrograms emphasized the importance of recognizing phase-related characteristics in examining the taxonomy of Xenorbiology.
Taxonomic Study of Xenorhabdus, a Genus of Bacteria Symbiotically Associated with Insect Pathogenic Nematodes
TLDR
The taxonomy of the bacteria symbiotically associated with the insect-pathogenic nematodes Neoaplectana and Heterorhabditis was examined and three subspecies of Xenorhabdus nematophilus are proposed, which vary in host nematode, pigmentation, maximum temperature for growth, responses to tests for phenylalanine deaminase by secondary-form isolates and for lipase and lecithinase by primary-form isolate.
DNA Relatedness between Xenorhabdus spp. (Enterobacteriaceae), Symbiotic Bacteria of Entomopathogenic Nematodes, and a Proposal To Transfer Xenorhabdus luminescens to a New Genus, Photorhabdus gen. nov.
TLDR
The levels of DNA relatedness for a broad sample of Xenorhabdus strains isolated from different species of entomopathogenic nematodes and from different geographical sources showed that X. luminescens should be classified as a separate genus.
Phylogeny of 54 representative strains of species in the family Pasteurellaceae as determined by comparison of 16S rRNA sequences
TLDR
The results presented a clear picture of the phylogenetic relationships, the complexity of the branching will make division of the Pasteurellaceae family into genera a difficult and somewhat subjective task.
...
1
2
3
4
...