Kurtzmaniella gen. nov. and description of the heterothallic, haplontic yeast species Kurtzmaniella cleridarum sp. nov., the teleomorph of Candida cleridarum
Bibliographic record
Abstract
The teleomorph of Candida cleridarum was discovered through the detection of conjugation between isolates of a large collection from the nitidulid beetles of the genus Carpophilus found in the flowers of various cacti in Arizona, USA. The previous oversight of the sexual cycle of this yeast is attributed to the inequality (ca. 5 : 1) of the two mating types. Extensive conjugation between compatible mating types is observed after overnight incubation on 5 % malt agar, followed after 3-5 days by the formation of mature asci. The hat-shaped ascospores are reminiscent of those seen in Kodamaea species, which are members of the same guild. However, published analyses of D1/D2 large subunit rDNA sequences indicate an affinity with the genus Debaryomyces. As the latter is polyphyletic and morphologically heterogeneous, and in view of the distinct life cycle of the new teleomorph, the new genus Kurtzmaniella is described with a novel species, Kurtzmaniella cleridarum sp. nov. Given the close relatedness of Kurtzmaniella cleridarum sp. nov. to Candida quercitrusa, Candida oleophila and Candida railenensis, for which several natural isolates were available, strains of these species were mixed in pairs under the conditions found favourable for the former. Conjugation was not detected in those species. The type strain of Kurtzmaniella cleridarum sp. nov. is UWOPS 99-101.1(T) (=CBS 8793(T)=NRRL Y-48386(T), h(+)), type of Candida cleridarum. The allotype is UWOPS 07-123.1 (=CBS 10688=NRRL Y-48387, h(-)).
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".