Abstract
In this manuscript we provide evidence for the seed transmission of Pepino mosaic virus (PepMV) in tomato. Fruit was harvested from a tomato crop artificially infected with both European and CH2 genotypes of PepMV and more than 100,000 seeds were extracted and cleaned using an enzymatic treatment without disinfection. Infection assays using indicator plants confirmed the presence of viable virus on the seeds. Seeds were distributed to ten different laboratories in three separate batches, where they were germinated and the young plants tested by ELISA. In total over 87,000 plants were tested and 23 positives detected, indicating an overall transmission rate of 0.026%. However, the observed seed transmission rates varied from 0.005% to 0.057%, depending on the seed batch used. Results clearly showed that PepMV can be transmitted from seeds contaminated with virus to seedlings, highlighting the risk of using seeds from PepMV-infected plants and the potential for seed transmission to contribute to the further spread of PepMV.
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Acknowledgements
This study was financed by the European Commission in the 6th Framework Programme (PEPEIRA EC contract No 044189). The authors thank dr. Bart Thomma for critically reading this manuscript, Syngenta Seeds for providing seed harvesting procedures and De Ruiter Seeds for supplying tomato seeds. Research Center Hoogstraten (Hoogstraten, Belgium) and Research Station for Vegetable Production (Sint-Katelijne-Waver, Belgium) are acknowledged for support in seed production and grow-out trials.
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Hanssen, I.M., Mumford, R., Blystad, DR. et al. Seed transmission of Pepino mosaic virus in tomato. Eur J Plant Pathol 126, 145–152 (2010). https://doi.org/10.1007/s10658-009-9528-x
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DOI: https://doi.org/10.1007/s10658-009-9528-x