Annals of Applied Biology (2014) 164, 182-189

D.E. Debreczeni, L. Rubio, J. Aramburu, C. López, L. Galipienso, S. Soler and B. Belliure (2014)
Transmission of Tomato spotted wilt virus isolates able and unable to overcome tomato or pepper resistance by its vector Frankliniella occidentalis
Annals of Applied Biology 164 (2), 182-189
Abstract: Tomato spotted wilt virus (TSWV) causes serious diseases of many economically important crops. Disease control has been achieved by breeding tomato and pepper cultivars with the resistance genes Sw-5 and Tsw, respectively. However, TSWV isolates overcoming these genetic resistances have appeared in several countries. To evaluate the risk of spread of these resistance-breaking isolates, we tested their ability of transmission by the main vector of TSWV, the thrips Frankliniella occidentalis. We compared the transmission rate by thrips of six TSWV isolates of different biotype (able or unable to overcome this resistance in pepper and tomato), and with divergent genotype (A and B). Our results indicate that the transmission rate was related to the amount of virus accumulated in thrips but not to virus accumulation in the source plants on which thrips acquired the virus. No correlation was found between transmission efficiency by thrips and the genotype or between transmission efficiency and the ability of overcoming both resistances. This result suggests that resistance-breaking isolates have the same potential to be transmitted as the isolates unable to infect resistant tomato and pepper cultivars.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Belén Belliure, Luis Rubio, Carmelo Lopez

Research topic(s) for pests/diseases/weeds:
transmission/dispersal of plant diseases

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Frankliniella occidentalis	Green pepper/chilli (Capsicum)
	Frankliniella occidentalis	Tomato (Solanum lycopersicum)
	Orthotospovirus tomatomaculae	Green pepper/chilli (Capsicum)
	Orthotospovirus tomatomaculae	Tomato (Solanum lycopersicum)