Genomic constitution and intergenomic translocations in the <i>Elymus dahuricus</i> complex revealed by multicolor GISH
Bibliographic record
Abstract
Multicolor genomic in situ hybridization was used to investigate the genomic constitution and intergenomic translocations in the Elymus dahuricus complex. The genomic constitution of species of the E. dahuricus complex was confirmed as StYH. H/Y and H/St intergenomic translocations were identified in the present study, with 7H and 1Y chromosomes involved in reciprocal translocations for all the accessions investigated in the complex. We propose that the translocations in the E. dahuricus complex are species-specific, associated with allopolyploidy, and may serve as important structural alterations for allopolyploid stability. Furthermore, they may help to restore fertility and nucleocytoplasmic compatibility in a newly formed polyploid and facilitate the successful establishment of E. dahuricus as a stable species. It was found that more chromosomes were involved in translocations and more types of intergenomic translocations were observed in the high altitude (4150 m) population Y 2228 than in populations from relatively lower altitudes (2600-3800 m). We speculate that more complicated genomic changes were associated with escalating altitudes in the Tibetan Plateau. These genomic changes contribute to promote the genetic variability and enable the newly formed allopolyploids to adapt to more changeable and harsher environments during the evolution of a polyploid species, thus facilitating their rapid and successful establishment in nature.
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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 | 0.000 | 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) | 0.001 | 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".