Leaf blight on okra caused by <i>Choanephora cucurbitarum</i> in China
Bibliographic record
Abstract
Okra (Abelmoschus esculentus (L.) Moench) is an economically important vegetable crop that is widely cultivated in the tropics for its nutritional properties. There are concerns, though, that in China, commercial okra production is at risk from an emerging leaf blight disease, that has been recently observed in Fujian Province. Fungi were isolated from diseased okra leaves collected in 2016 and 89 fungal isolates were tentatively identified as Choanephora cucurbitarum based on cultural and sporangia characters. DNA sequences of the internal transcribed spacer (ITS) region and the D1/D2 region of the large subunit (LSU) of the rRNA gene from two representative isolates (C6 and C7) were 99% identical to those of C. cucurbitarum obtained from NCBI. Phylogenetic analysis based on the ITS sequences showed that C6 and C7 clustered with C. cucurbitarum. All 89 fungal isolates were found to be pathogenic to okra leaves. We provide the first confirmation that, based on morphological, pathogenicity and phylogenetic analyses, the causal agent of leaf blight of okra in China was C. cucurbitarum.
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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 | 0.001 | 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".