Ethylene sensitivity assay in medicinal and fiber-type <i>Cannabis</i> seedlings reveals a triple-response-like phenotype
Bibliographic record
Abstract
This study examines the conservation of ethylene response mechanisms in cannabis seedlings, expanding on evidence of ethylene’s influence in mature plants, particularly sexual plasticity. Using hemp and drug-type seedlings, we observed a unique triple-response-like phenotype under dark conditions with ethephon treatment, characterized by hypocotyl and radicle shortening alongside hypocotyl thickening. Employing a novel ethephon-based assay, this research circumvents the challenges of gaseous ethylene, enabling more accessible investigation of ethylene sensitivity in early development. Results showed high responsiveness to low ethephon concentrations (125–500 mg/L), unlike prior findings in mature plants, while silver thiosulfate (1–3 mmol/L) consistently reversed ethylene effects, supporting the conservation of ethylene signaling pathways across genetic backgrounds. Interestingly, the absence of an exaggerated apical hook in treated seedlings suggests unique regulatory adjustments in achene-bearing plants. This study advances our understanding of ethylene signaling in early cannabis development and provides a foundation for future research on ethylene’s role in developmental processes, including sexual plasticity.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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 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".