Identification of Potato Y Potyvirus (PVYO) Resistance in Wild and Cultivated Tomatoes

Authors : Fevziye Çelebi TOPRAK, Eminur BARUTÇU, Anne FRARY, Sami DOĞANLAR

Pages : 11-17

View : 43 | Download : 11

Publication Date : 2009-02-01

Article Type : Research Paper

Abstract :Potato Y potyvirus insert ignore into journalissuearticles values(PVY); is an important plant pathogen worldwide that infects and causes yield losses in the family Solanaceae including potato insert ignore into journalissuearticles values(Solanum tuberosum);, pepper insert ignore into journalissuearticles values(Capsicum spp.);, tomato insert ignore into journalissuearticles values(S. lycopersicum);, and tobacco insert ignore into journalissuearticles values(Nicotiana tabacum);. In this study, 20 different tomato accessions representing 6 different species were mechanically inoculated with PVYO. The plants were scored visually for symptoms and then tested for presence of the virus 2-4 weeks after inoculation by ELISA. The results were variable. Most wild species of tomato sustained PVYO replication in inoculated leaves. Some of the wild species showed an immune response, while some became systemically infected. Inoculation and analysis of F2 populations suggested that the resistance is controlled by a single recessive gene in different wild species.
Keywords : Immunity, resistance, PVYO, tomato