Claim · model-written summary
Nicotiana benthamiana supported genetically stable viral diversity, consistent with large effective population sizes.
- Taxon
- Nicotiana benthamiana
Nicotiana benthamianae1 - Interactor
- potato virus Y
Potato virus Yt0pathogen - Outcome
- genetically stable diversitye0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two isolates of potato virus Y”
e0“benthamiana supports high viral RNA accumulation and genetically stable diversity”
e1“Bentham’s tobacco (Nicotiana benthamiana)”
Title
Experimental evolution of the host range dynamics in two isolates of potato virus Y
Ivair J Morais; João M F Silva; Alice K Inoue-Nagata; et al. Virus Evolution 2026. doi:10.1093/ve/veag010
Other claims from this paper (9)
- Observation Nicotiana benthamiana supported high PVY RNA accumulation.
- Observation Potato created strong bottlenecks for PVY, often leading to viral lineage extinction and increased mutation fixation through genetic drift.
- Observation Tomato served as an intermediate host for PVY, with outcomes varying by virus strain.
- Observation Tomato acted as a sink host for some PVY lineages, resulting in unsuccessful infection in the next passage.
- Observation PVYNb showed greater standing diversity and more lineage-specific nonsynonymous change than PVYSt.
- Observation PVYSt exhibited greater genomic stability and pervasive purifying selection across most cistrons.
- Observation Only a few late-passage N. benthamiana PVY lineages showed elevated pN/pS ratios, indicating that positive selection was rare and not consistently replicated.
- Intervention effect Alternating between permissive and restrictive hosts helped prevent PVY lineage extinction.
- Mechanism The balance between selection and drift in PVY depends strongly on host permissiveness and demographic constraints.