Aleurothrixus trachoides (Back) can transmit begomovirus from Duranta to potato, tomato and bell pepper.

ABSTRACT

Solanum whitefly, Aleurothrixus trachoides (Back). (Hemiptera Aleyrodidae) was considered as a non-virus vector by European and Mediterranean Plant Protection Organization (EPPO) reports. However, in the present study it was found to transmit Duranta leaf curl virus (DLCV) to tomato, bell pepper and potato. A. trachoides infested field samples of Duranta sp (100%) and tomato (20%) tested positive for begomovirus by PCR using begomovirus degenerate primers and primers specific to Tomato leaf curl New Delhi virus showing amplicon of 520 bp and 2.7 Kb respectively. The DNA samples of A. trachoides collected from virus positive duranta and tomato plants also tested positive for the virus. Virulent whiteflies from duranta could successfully transmit DLCV to bell pepper (26%) and tomato (13 %) plants as confirmed by Rolling Circle Amplification. The rate of virus transmission by A. trachoides from DLCV inoculated tomato to bell pepper and tomato to potato was 100% and tomato to tomato was 80%. The results suggest whitefly A. trachoides as the vector for DLCVand to the best of our knowledge, this is the first report for A. trachoides as vector of begomovirus. These findings suggest need for reconsideration of A. trachoides as a virus-vector. This will have great impact on solanaceous vegetable cultivation in India and other parts of the world.