Reclassification of type strains of Rhizobium indigoferae and Sinorhizobium kummerowiae into the species Rhizobium leguminosarum and Sinorhizobium meliloti, respectively
Bibliographic record
Abstract
The species Rhizobium indigoferae and Sinorhizobium kummerowiae were isolated from legume nodules and the 16S rRNA sequences of their respective type strains, CCBAU 71042T and CCBAU 71714T, were highly divergent from those of the other species of the genera Rhizobium and Sinorhizobium, respectively. However, the 16S rRNA gene sequences obtained for strains CCBAU 71042T and CCBAU 71714T several years after description, were different from the original ones, showing 100 % similarity to the type strains of Rhizobium leguminosarum and Sinorhizobium meliloti, respectively. Phylogenetic analyses of two housekeeping genes, recA and atpD, confirmed the high phylogenetic closeness of strains CCBAU 71042T and CCBAU 71714T to the respective type strains of R. leguminosarum and S. meliloti. In the present work, we compared the genomes of the type strains of R. indigoferae and S. kummerowiae available in several culture collections with those of the respective type strains of R. leguminosarum and S. meliloti, some of them obtained in this study. The calculated average nucleotide identity–blast and digital DNA–DNA hybridization values in both cases were higher than those recommended for species differentiation, supporting the proposal for the reclassification of the type strains of R. indigoferae and S. kummerowiae into the species R. leguminosarum and S. meliloti, respectively.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".