Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Brevipalpus papayensis as vector of Coffee ringspot virus and Citrus leprosis virus C.

Abstract

Coffee ringspot virus (CoRSV) and Citrus leprosis virus C (CiLV-C) are two emergent pathogens that can cause significant losses to coffee and citrus, respectively. Recently, it was verified that Brevipalpus phoenicis, originally reported as vector of these viruses, is indeed a complex group reclassified into eight mite species. Among those, B. papayensis occurs in citrus, but seems to be prevalent in coffee plantations. However, it is still unclear the relationship (if any) of B. papayensis with CiLV-C or CoRSV. This paper presents the results of studies conducted to determine whether or not this mite is capable of transmitting these viruses. Plants used included coffee (Coffea arabica), Arabidopsis thaliana and common bean (Phaseolus vulgaris). This is thought to be the first report of common bean as an experimental host of CoRSV. Brevipalpus yothersi has been shown to transmit cileviruses. Brevipalpus californicus seems to be the only vector of the dichorhavirus Orchid fleck virus, while B. phoenicis sensu stricto is the vector of the tentative dichorhavirus Citrus leprosis virus N. This is thought to be the first confirmation that B. papayensis can transmit CiLV-C and CoRSV. This is also the first time, following the reclassification of the B. phoenicis group, that a transmission was demonstrated by a single species of Brevipalpus for both a dichorha- and a cilevirus. Since this mite species is prevalent in coffee plantations in Brazil, it is likely the main vector of CoRSV under natural conditions.