Detection and genetic diversity of Grapevine red blotch-associated virus isolates in table grape accessions in the National Clonal Germplasm Repository in California
Bibliographic record
Abstract
Grapevine red blotch-associated virus (GRBaV) is a recently discovered ssDNA virus that is widespread in wine grapes in California. We investigated whether GRBaV infection was present in 156 table grape accessions of Vitis vinifera that included 53 accessions exhibiting leafroll-like symptoms and 81 accessions from diverse geographic origins. Cane samples were collected during the dormant season in 2012 and analysed for GRBaV infection by PCR. A total of 73 accessions showed presence of GRBaV and these included raisin and table grape accessions with black, green and red berries. A 557 bp amplicon obtained by PCR was purified and sequenced, and the phylogenetic relationship among GRBaV isolates was examined by the maximum likelihood method. The maximum genetic variability among the isolates was only 8% and they belonged to two clades. Although it is not yet known if GRBaV is present outside of North America, 54 accessions from sources originating outside of North America tested positive for the virus.
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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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".