Isolates of <i>Diaporthe-Phomopsis</i> from weeds and their effect on soybean
Bibliographic record
Abstract
Greenhouse and laboratory studies were conducted to determine the identity and pathogenicity of Diaporthe-Phomopsis species complex recovered from eight weed species. The identifications of the eight isolates representing four taxa, including two apparently undescribed species of Phomopsis, were based on colony features in pure culture, morphology of alpha or beta-conidia, and internal transcribed spacer sequences. Of the eight isolates, Phomopsis sp. A. from Eclipta prostrata (eclipta), Phomopsis longicolla isolates from both Ipomoea lacunosa (pitted morning-glory) and Chamaesyce nutans (nodding spurge), and Diaporthe phaseolorum from Desmanthus illinoensis (Illinois bundle-flower) caused significant levels of infection on soybean hypocotyls, pods, and seeds. These four isolates from weed species also caused systemic infection of seed similar to the soybean isolate of P. longicolla. Diaporthe phaseolorum isolated from Caperonia palustris (Texasweed) and Aster exilis (slender aster), Phomopsis sp. B. from Sida spinosa (prickly sida), and Phomopsis sp. A from Polygonum aviculare (prostrate knotweed) were not pathogenic to soybean. This is the first demonstration that Phomopsis sp. A, P. longicolla, and D. phaseolorum isolated from eclipta, pitted morning-glory, nodding spurge, and Illinois bundle-flower cause seed infection of soybean.
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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 | 0.000 | 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 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".