Annals of Applied Biology (2013) 163, 466-474

M. Rubio, P. Martínez-Gómez, J.A. García and F. Dicenta (2013)
Interspecific transfer of resistance to Plum pox virus from almond to peach by grafting
Annals of Applied Biology 163 (3), 466-474
Abstract: Grafting almond variety 'Garrigues' onto 'GF305' peach seedlings heavily infected by Plum pox virus (PPV) progressively produces the disappearance of viral symptoms and drastically reduces virus accumulation in 'GF305' rootstock, in most cases to undetectable levels. This response appears to be specific between almond and peach, as it was not consistently observed by grafting 'Garrigues' onto other Prunus species such as plum ('Adesoto') or apricot ('Real Fino'). The ability to induce resistance to PPV in 'GF305' was transmitted to the sexual descendants of Garrigues. Furthermore, grafting 'Garrigues' onto 'GF305' before PPV inoculation completely prevented virus infection, showing that the resistance is constitutive and not induced by the virus. This fact suggests that resistance may be due to the transfer of a defence factor from 'Garrigues' almond through the graft union and its interaction with specific factors of 'GF305' peach to produce the antiviral response. These results open new avenues to potential protection against PPV in peach, the most economically important species among stone fruits.
(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): Manuel Rubio, Pedro Martínez-Gómez, Juan Antonio Garcia, Federico Dicenta

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plum pox virus	Peach/nectarine (Prunus persica)