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First report of Tomato chlorosis virus infecting eggplant and scarlet eggplant in Brazil.

Fonseca, M. E. N. ; Boiteux, L. S. ; Lima, M. F. ; Mendonça, J. L. ; Costa, A. F. ; Fontes, M. G. ; Costa, H. ; González-Arcos, M.

Plant Disease 2016 Vol 100 No. 4 pp. 867-868;

Abstract

Aubergine (Solanum melongena) and scarlet eggplant (S. aethiopicum) are economically important vegetable crops in warm regions of Brazil. Samples of aubergine cultivars 'Napoli' and 'Ciça' with interveinal yellowing in the older leaves similar to that induced by criniviruses were collected in fields heavily colonized by Bemisia tabaci MEAM-1 species in Canguçu (Rio Grande do Sul) in February 2013 (isolate named as CR-131) and Formosa (Goiás) in April 2015 (isolate CR-173). Scarlet eggplants 'Comprido' showing identical symptoms were also sampled in Venda Nova do Imigrante (Espírito Santo) in April 2013 (isolate CR-148), Bragança Paulista (São Paulo) in June 2013 (isolate CR-155), and Brasília (Federal District) in June 2015 (isolate CR-193). Based on the results of PCR assays, the causal agent was identified as Tomato chlorosis virus (ToCV), which was confirmed by dot blot hybridization assays and tansmission tests. In South America, ToCV has been detected so far on solanaceous crops and weeds. However, this is thought to be the first formal report of S. melongena and S. aethiopicum as natural hosts of ToCV in the continent and the first worldwide report of scarlet eggplant as a crinivirus host.