Genomic structure and ex situ conservation of the North American grapevine <scp> <i>Vitis labrusca</i> </scp>
Bibliographic record
Abstract
Societal Impact Statement The North American wild grapevine species Vitis labrusca is an important source of disease resistance and climate resilience traits for breeding new grapevine cultivars. To ensure its continued use in breeding, V. labrusca must be accurately identified, and genetically diverse material must be conserved. We used genomics to examine both currently conserved and additional wild‐collected V. labrusca individuals. We found that many individuals labeled as V. labrusca are likely hybrids and that genetically distinct populations from Virginia and North Carolina are not conserved. By identifying genomic conservation gaps, our findings support more effective conservation strategies which will safeguard V. labrusca for future use in breeding. Summary Crop wild relatives, such as the North American grapevine Vitis labrusca , are valuable sources of disease resistance and climate resilience for breeding improved plant cultivars. To support their continued use in breeding both in situ (in natural habitat) and ex situ (off‐site) conservation is required. We assessed how well the United States Department of Agriculture (USDA) ex situ collection represents the genomic diversity of V. labrusca . We examined 314 accessions of V. labrusca , including accessions conserved in the USDA germplasm collection and wild‐collected accessions. Using genotyping‐by‐sequencing, we identified over 44,000 genetic markers which we used to determine population structure, potential mislabeling or hybridization, and the extent to which ex situ conserved accessions adequately capture this species. Approximately one third of the accessions examined in this study were identified as putative hybrids, highlighting the need for living germplasm collections given the high likelihood of hybrid seed. We also identified both geographic and genomic conservation gaps in conserved V. labrusca . Our results demonstrate the need for improved genetic validation of conserved grapevine germplasm as well as additional sampling to improve representation of wild V. labrusca conserved ex situ. We highlight geographic areas, particularly in Virginia and North Carolina, for additional collection efforts to help safeguard this important species for biodiversity conservation as well as future breeding and research efforts.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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 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".