Tropical Plant Pathology (2015) 40, 405-409

Mônica A. Macedo, Miguel Michereff Filho, Jesús Navas-Castillo and Alice K. Inoue-Nagata (2015)
Host range and whitefly transmission efficiency of Tomato severe rugose virus and Tomato golden vein virus in tomato plants
Tropical Plant Pathology 40 (6), 405-409
Abstract: Begomoviruses are the most important viruses affecting tomato (Solanum lycopersicum) crops in Brazil. Tomato severe rugose virus (ToSRV) is the most predominant species, followed by Tomato golden vein virus (TGVV). We evaluated the putative effect of host range and whitefly transmission efficiency on the predominance of ToSRV. Whitefly (Bemisia tabaci, B biotype or MEAM 1) vectors carrying the two viruses were allowed to freely inoculate plants of 27 species, maintained in cages. Visual and PCR detection indicated that ToSRV could infect five plant species and TGVV could infect six species. Transmission studies were performed in single or double infections in tomato plants. ToSRV infected a higher percentage of plants than TGVV (single or mixed inoculation) in all trials. The rates of acquisition of ToSRV and TGVV, however, did not differ significantly between insects fed on tomato leaves with single or mixed infections. A higher transmission efficiency of ToSRV by whiteflies under the agricultural conditions of tomato cultivation in Brazil may thus contribute to the predominance of ToSRV in the field.
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Database assignments for author(s): Alice Kazuko Inoue-Nagata, Jesús Navas-Castillo

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
transmission/dispersal of plant diseases

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bemisia tabaci biotype MEAM1	Tomato (Solanum lycopersicum)
	Tomato severe rugose virus	Tomato (Solanum lycopersicum)	Brazil (south)
	Tomato golden vein virus	Tomato (Solanum lycopersicum)	Brazil (south)