Identification ofTomato Mottle Taino Begomovirus strains in Cuban potato fields |
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| Authors: | Marlene Cordero Pedro L Ramos Lester Hernández Ana I Fernández Ana L Echemendía Rudy Peral Gloria González Daniel García Surey Valdés Ana Estévez Keren Hernández |
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| Institution: | (1) Inst. de Investigaciones Hortícolas Liliana Dimitrova, Quivicán, La Habana, Cuba;(2) Dept. de Plantas, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba;(3) Inst. de Investigaciones en Sanidad Vegetal, La Habana, Cuba;(4) Inst. Nacional de Ciencias Agrícolas, La Habana, Cuba |
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| Abstract: | The presence of a begomovirus in potato plants with yellow mottle symptoms was determined for the first time in Cuba. The
incidence of typical begomovirus-like symptoms in potato plants in some regions of Havana province (Güira de Melena, San José
de las Lajas, Güines and Boyeros) during the growing seasons from 1992 to 1998 was in general low. However, in some cultivars
belonging to the National Program for Potato Genetic Improvement, the incidence reached 100%. Yield losses, determined in
1992 and 1994, ranged as high as 19% to 56.33% depending on the cultivar. Characterization of the causal agent was done by
light microscopy, host range (graft and mechanical transmission), DNA hybridizations, polymerase chain reaction, and restriction
fragment length polymorphism analysis. Nucleotide sequence of the amplified fragments revealed the presence ofTomato mottle Taino virus. The virus was transmittedvia tubers and has been detected in mixed infections withPotato virus X and withPotato leaf roll virus.
http://www.phytoparasitica.org posting Oct. 20, 2003. The first two authors contributed equally to this work. |
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| Keywords: | Whitefly-transmitted geminiviruses incidence symptoms Tomato mottle Taino begomovirus potato Cuba |
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