Potato viruses hide unevenly across leaves, stems, and tubers
Crop Improvement
If you grow potatoes in raised beds or a backyard plot, the seed potato you plant this spring may already carry a virus that stunts yield without ever showing an obvious symptom.
Potato plants can carry viruses called PVY and PVM without always looking sick, which makes them tricky to catch before planting. Scientists checked different parts of the plant, like leaves, stems, and tubers, to see where these viruses show up most strongly. That matters because testing the right plant part means growers and seed certifiers can catch infected stock before it spreads to a whole crop.
Key Findings
PVY and PVM were detected at varying concentrations across different potato plant organs (leaves, stems, tubers)
Viral distribution patterns differed between the two virus types, suggesting organ-specific diagnostic sampling could improve detection accuracy
Findings support refining testing protocols for seed potato certification programs to reduce false negatives
chevron_right Technical Summary
Researchers tracked two common potato viruses, PVY and PVM, through different parts of the potato plant to figure out which tissues carry the highest viral loads. Knowing where these viruses concentrate helps growers test seed potatoes more accurately and cut down on disease spreading through infected seed stock.
Species Mentioned
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The potato is a starchy tuberous vegetable native to the Americas that is consumed as a staple food in many parts of the world. Potatoes are underground stem tubers of the plant Solanum tuberosum, a perennial in the nightshade family Solanaceae.