Potato virus Y (PVY) and Pepper yellow mosaic virus (PepYMV) are the only potyvirus species found in pepper and sweetpepper in Brazil. The region encoding the coat protein of PVY and PepYMV isolates collected in sweetpepper was evaluated for the presence of specific motifs of potyviruses. The identity of the amino acid sequence in CP among PepYMV isolates was 93% to 100%, while for PVY was 94% to 98%. Among the viruses that ranged from 73% to 79%. It was observed variability in the conserved regions of the CP. All PepYMV isolates sequenced did not show the DAG motif in the CP, related to virus transmission by aphids, while for sequences of PVY this motif was observed. Other motifs, such MVWCIENG, ENTERH, QMKAAA and PYMPRYG were found in both species.
sweet pepper; variability; Potyvirus
