Root infection of wasabi (<i>Wasabia japonica</i>) by<i>Pythium</i>species
Bibliographic record
Abstract
Wasabi (Wasabia japonica) is cultivated under cool, humid conditions in many regions of the world for its rhizome, which is used as a culinary ingredient. In British Columbia, there is some wasabi production under semihydroponic conditions in polyethylene greenhouses. In January 2004, wasabi plants with browning and root loss, with no apparent foliar symptoms, were obtained. Pythium dissotocum and Pythium intermedium were consistently isolated from the affected roots. Wasabi plants produced from meristem-tip tissue culture were grown hydroponically in Gamborg's B5 nutrient solution at 18 °C for 6 months, inoculated with mycelial plugs of each Pythium sp., and incubated at 20 °C. After 2 months, the inoculated plants had significant root browning and loss, and the root dry mass of inoculated plants was reduced to 16% of that in the noninoculated controls. Both Pythium spp. were observed colonizing the roots and were recovered from inoculated plants. Pythium dissotocum and P. intermedium appear to be prevalent root pathogens of W. japonica without inducing apparent foliar symptoms. However, root loss can predispose the affected plants to other biotic and abiotic stresses, leading to plant mortality.
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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 | 0.001 | 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".