Frequent recombination and low level of clonality within Salmonella enterica subspecies I
Bibliographic record
Abstract
The genetic relationship and population structure of Salmonella enterica subspecies I strains were analysed using nucleotide sequences of four genes (mglA, proV, torC and speC). Fifteen strains from the Salmonella reference collection B (SARB), belonging to 13 serovars, were analysed. Sequence data of two housekeeping genes, mdh and mutS, of the same 15 strains reported by Brown et al. (2003) (Proc Natl Acad Sci U S A 100, 15676-15681) were also included in the analyses. Phylogenetic analysis revealed that there was a lack of congruence among the six gene trees. Split decomposition analysis resolved only five strains with a network structure, while others showed a star phylogeny. Compatibility values for the SARB strains were the lowest in comparison to those for strains representing different subspecies of S. enterica. These results showed that the genes studied have undergone frequent recombination, suggesting a low level of clonality within subspecies I of S. enterica.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".