Molecular and biological characterization of an isolate of passiflora virus Y (Potyvirus) naturally infecting soybean (Glycine max) in Brazil

Abstract

Passiflora virus Y was detected infecting soybean (Glycine max) for the first time naturally in Brazil. This research reports the complete genome sequence, molecular and biological properties of PaVY Brazilian isolate. The complete genome sequencing shows a 9679nt long virus that shares 84.4% nt identity with a previously reported PaVY isolate reported from Passiflora spp. PaVY-Br induced chlorotic spots and systemic mosaic on soybean and chlorotic local lesions on passion fruit (Passiflora edulis) and sesame (Sesamum indicum). The virus was successfully transmitted by Myzus persicae, indicating the aphid vector can contribute to PaYV spreading from passion fruit to soybean plants. Additional epidemiological research is in progress to investigate the distribution of PaVY in soybean production areas in Brazil.