Journal of Plant Pathology (2013) 95, 579-586

K. Caglayan, C.U. Serce, M. Gazel, K. Kaya, F.C. Cengiz, E. Vidal and M. Cambra (2013)
Evaluation of the susceptibility of different Prunus rootstocks to natural infection of Plum pox virus-T
Journal of Plant Pathology 95 (3), 579-586
Abstract: Plum pox virus (PPV) has been observed in Turkey since 1968, but was not widespread except in apricot and plum trees in home gardens and ornamental parks in restricted areas. Susceptibility of six different Prunus rootstocks to strain PPV-T was assessed under natural inoculum pressure in the Izmir-Aegean region during 2010-2011. Aphid populations were monitored from the first week of April to the middle of June by the stickyplant method one year after the rootstock plantation was established. Aphids collected from different rootstocks were tested individually by squash real-time RT-PCR and all rootstocks were regularly tested by DASI-ELISA. The largest aphid populations were observed at the end of May and the most abundant aphid species as averages over the two years were Myzus persicae (20.15%), Hyalopterus pruni (18.64%), Aphis craccivora (9.04%) and Aphis gossypii (8.36%). In 2011, the highest percentage of viruliferous aphids was found in M. persicae (34.78%), followed by H. pruni (32.50%), Macrosiphum euphorbiae (25.00%), A. gossypii (23.80%), A. spiraecola (12.50%) and A. craccivora (10.00%). Of the six Prunus rootstocks tested, only Nemaguard and Myrobalan 29C were infected by PPV-T, infection rate in 2010 being 6.0% (Nemaguard) and 4.0% (Myrobalan 29C). The infection rate increased to 16.0% for Nemaguard and 14.0% for Myrobalan 29C in 2011. However, the other rootstocks, Prunus marianna GF8.1, Docera6, GF677 and Garnem tested negative for PPV-T throughout 2011. PPV isolates obtained from naturally infected apricot trees (inoculum source) and from infected rootstocks in the experimental plot were characterized as PPV-T and had more than 99.5% nucleotide sequence identity.
(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): Çigdem Ulubas Serçe, Mona Gazel, Kadriye Caglayan

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aphis gossypii		Turkey
	Myzus persicae		Turkey
	Macrosiphum euphorbiae		Turkey
	Aphis craccivora		Turkey
	Hyalopterus pruni		Turkey
	Plum pox virus	Apricot (Prunus armeniaca)	Turkey
	Plum pox virus	Plum/prune (Prunus domestica)	Turkey
	Plum pox virus	Prunus (other fruit tree species)	Turkey
	Aphis spiraecola		Turkey