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Isothermal amplification for detection of Plum pox virus

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URI
http://hdl.handle.net/20.500.11939/4254
DOI
10.17660/ActaHortic.2008.781.31
Derechos de acceso
openAccess
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Author
Olmos, Antonio; Bertolini, Edson; Cambra, Mariano
Date
2008
Cita bibliográfica
Olmos, A., Bertolini, E., Cambra, M. (2008). Isothermal amplification for detection of Plum pox virus. Proceedings of the Twentieth International Symposium on Virus and Virus-Like Diseases of Temperate Fruit Crops - Fruit Tree Diseases, (781), 209-213.
Abstract
A nucleic acid sequence-based amplification method coupled with flow-through hybridisation (NASBA-FH) was developed for Plum pox virus (PPV) detection. The detection limit of the NASBA-FH was established at two copies of control transcripts, resulting 10 times higher than that obtained by Co-PCR and 1000 times higher than the sensitivity afforded by RT-PCR. In addition, samples from 253 stone-fruit trees were collected during winter and analysed. The samples were tested using methods recommended by the European and Mediterranean Plant Protection Organization to detect PPV (DASI-ELISA, RT-PCR and Co-PCR) and by NASBA-FH. PPV diagnosis by ELISA and NASBA-FH coincided in 90.5%, while ELISA and PCR-based methods coincided in the diagnosis of 91.3% of the trees and PCR-based methods with NASBA-FH agreed in 95.2%. Results support that NASBA-FH is a suitable molecular method for routine PPV detection in the winter period.
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