Phylogenetic relationships of<i>Cylindrocladium pseudogracile</i>and<i>Cylindrocladium rumohrae</i>with morphologically similar taxa, based on morphology and DNA sequences of internal transcribed spacers and beta-tubulin
Bibliographic record
Abstract
Unidentified strains of Cylindrocladium that were baited from soil in the Amazonas state of Brazil or isolated from Adiantum in the Netherlands were examined morphologically and analysed phylogenetically in comparison with reference strains. Phylogenetic trees inferred from the 5.8S subunit and flanking internal transcribed spacers (ITS1 and ITS2) of rDNA, as well as the beta-tubulin gene, separated species in accordance with their morphological features and characteristics. Although species differences based on ITS sequences were consistent, there were only a few informative sites available, making it difficult to clearly identify the unknown strains. Better resolution in separation of species was achieved from the beta-tubulin data. The strains baited from soil in Brazil were found to represent two species, namely Cylindrocladium gracile (Bugnic.) Boesew. and Cylindrocladium pseudogracile Crous. Morphologically, these two species are similar, except that the latter has slightly narrower, 1(-3)-septate conidia, and produces a Calonectria teleomorph. Furthermore, the strain from the Netherlands represents Cylindrocladium rumohrae El-Gholl & Alfenas, a species previously known only from Panama. Results of this study also indicated that the beta-tubulin gene is phylogenetically more informative than the ITS regions for distinguishing species of Cylindrocladium.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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 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".