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1 August 2015 Evaluating Weeds as Hosts of Tomato yellow leaf curl virus
Hugh A. Smith, Teresa E. Seijo, Gary E. Vallad, Natalia A. Peres, Keri L. Druffel
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Abstract

Bemisia tabaci (Gennadius) biotype B transmits Tomato yellow leaf curl virus (TYLCV), which affects tomato production globally. Prompt destruction of virus reservoirs is a key component of virus management. Identification of weed hosts of TYLCV will be useful for reducing such reservoirs. The status of weeds as alternate hosts of TYLCV in Florida remains unclear. In greenhouse studies, B. tabaci adults from a colony reared on TYLCV-infected tomato were established in cages containing one of four weeds common to horticultural fields in central and south Florida. Cages containing tomato and cotton were also infested with viruliferous whiteflies as a positive control and negative control, respectively. Whitefly adults and plant tissue were tested periodically over 10 wk for the presence of TYLCV using PCR. After 10 wk, virus-susceptible tomato plants were placed in each cage to determine if whiteflies descended from the original adults were still infective. Results indicate that Bidens alba, Emilia fosbergii, and Raphanus raphanistrum are not hosts of TYLCV, and that Amaranthus retroflexus is a host.

© The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America.
Hugh A. Smith, Teresa E. Seijo, Gary E. Vallad, Natalia A. Peres, and Keri L. Druffel "Evaluating Weeds as Hosts of Tomato yellow leaf curl virus," Environmental Entomology 44(4), 1101-1107, (1 August 2015). https://doi.org/10.1093/ee/nvv095
Received: 27 October 2014; Accepted: 5 June 2015; Published: 1 August 2015
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