Journal of Plant Pathology (2004) 86, p. 302 (Fanigliulo et al.)

A. Fanigliulo, G. Parrella, S. Comes, R. Pacella and A. Crescenzi (2004)
Evaluation of pot-1 gene in Lycopersicon hirsutum PI 247087 against Italian Potato virus Y isolates from non potato hosts
Journal of Plant Pathology 86 (4), 302-302
XI Meeting, Italian Society for Plant Pathology, Milan, 29/9 - 1/10, 2004
Abstract: Potato virus Y (PVY) is a widespread potyvirus and a serious pathogen of tomato in Europe. Recently, severe outbreaks of PVY isolates endowed with a high biological, serological, and molecular variability have been observed in tomato crops in Italy. The use of genetic resistance is the best strategy to control losses caused by this virus. The gene pot-1 confers what appeared to be a durable resistance to PVY in the tomato wild relative Lycopersicon hirsutum PI247087, which nonetheless, was recently overcome by a PVY strain carrying a single aminoacidic change in the VPg. To determine whether other PVY strains able to overcome this resistance exist, L. hirsutum PI247087 seedlings were mechanically inoculated with 20 different virus isolates, available at the University of Basilicata that had been recovered from tomato, pepper and black nightshade in different Italian regions. Inoculated plants were monitored for symptoms development and analysed by TAS-ELISA 14 and 28 days post inoculation. None of the PVY isolates used in the present study was able to infect L. hirsutum P1247087. This can be taken as an indication that virulent PVY isolates able to overcome the pot-1 mediated resistance may not occur in the main tomato growing areas of Italy. Based on this assumption, the production and release of tomato varieties carrying the pot-1 gene could represent an attractive strategy to control PVY in open field tomato crops.
Database assignments for author(s): Aniello Crescenzi, Giuseppe Parrella

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Potato virus Y	Green pepper/chilli (Capsicum)	Italy
	Potato virus Y	Tomato (Solanum lycopersicum)	Italy