Genetic transformation, electrophoretic karyotyping and isolation of insertional mutants in the tree pathogenic fungus <i>Neonectria galligena</i>
Bibliographic record
Abstract
Summary The ascomycete tree pathogen Neonectria galligena was transformed using several plasmid vectors containing the bacterial hygromycin phosphotransferase gene ( hph ) conferring resistance to hygromycin B. Protoplasts were produced by digesting germinating conidia in a Novozym 234 solution osmotically stabilized with NaCl. The protoplasts regenerated at ca. 70% on complete medium supplemented with either sucrose or NaCl. Up to 115 hygromycin B‐resistant transformants per microgram of transforming DNA per 10 8 protoplasts were obtained. Southern analysis of genomic DNA from the transformants, separated by either standard agarose gel electrophoresis or by pulsed field gel electrophoresis, confirmed that hygromycin B resistance resulted from integration of the vector. Transformants expressing the green fluorescent protein were also obtained. A total of 209 transformants were then screened for aggressiveness and mycelial radial growth. Four mutants were identified including one mutant with reduced aggressiveness but normal growth in vitro , two mutants with reduced growth in vitro but normal aggressiveness, and one mutant in which both aggressiveness and in vitro growth were reduced.
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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".