Adaptation to new hosts shown by the cloned components of<i>Mungbean yellow mosaic India virus</i>causing cowpea golden mosaic in northern India
Bibliographic record
Abstract
The causal virus of golden mosaic of cowpea in northern India has been identified as a variant of Mungbean yellow mosaic India virus (MYMIV) and designated as MYMIV-[Cp]. MYMIV-[Cp] was transmissible by whitefly (Bemisia tabaci) only to cowpea (Vigna unguiculata), yard long bean (V. unguiculata subsp. sesquipedalis), and French bean (Phaseolus vulgaris) and not to any other leguminous hosts. However, agroinoculation of the cloned DNA A and DNA B components of MYMIV-[Cp] produced systemic symptoms in blackgram (V. mungo), mungbean (V. radiata), and mothbean (V. aconitifolia). The severity of disease symptoms and infectivity rate depended on the genotype tested. The progeny virus of agroinoculated plants was whitefly transmissible between blackgram, mungbean, cowpea, and French bean plants. Though the virus was transmissible to blackgram and produced severe symptoms, very low levels of viral DNA components were seen, indicating only limited adaptation to the host. The work communicated here describes, for the first time, the aetiology of golden mosaic of cowpea in northern India and demonstrates adaptation to new hosts of a cloned virus, through agroinoculation.
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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".