Submitted to: Panamerican Conference
Publication Type: Proceedings
Publication Acceptance Date: 2/2/2003
Publication Date: 4/20/2003
Citation: WINTERMANTEL, W.M., CORTEZ, A.A., ANCHIETA, A.G. TRIALEURODES VAPORARIORUM TRANSMITS TOMATO CHLOROSIS VIRUS WITH HIGHER EFFICIENCY THAN TOMATO INFECTIOUS CHLOROSIS VIRUS. PANAMERICAN CONFERENCE. 2003. p. 215.
Technical Abstract: Tomato chlorosis crinivirus (ToCV) and Tomato infectious chlorosis crinivirus (TICV) are being found in increasing numbers of locations throughout the world. TICV is transmitted only by Trialeurodes vaporariorum, while ToCV is transmitted by T. vaporariorum and 3 additional whitefly species. Both criniviruses infect many of the same solanaceous hosts. Increasingly, these viruses are being found together in the same fields, and occasionally in the same host plant. Both viruses have similar genome sizes and organization, suggesting the potential exists for virus interactions. We established Physalis wrightii source plants, containing either TICV alone, ToCV alone, or both viruses together, confirmed by northern blot using virus specific probes. T. vaporariorum were allowed to feed separately on all virus sources, as well as virus-free plants for 24 hours, then were transfered to young host plants. After 5 weeks, symptomatic plants were tested by northern blots. Transmission of each virus from mixed infection by the common vector, T. vaporariorum indicated a much higher transmission efficiency for ToCV than for TICV in both single and mixed infections. This suggests that ToCV has a higher affinity for association with T. vaporariorum than TICV, and may influence the ecology of mixed infections.