Since ToSRV is known to infect multiple hosts, including crops such as peppers, and weeds such Nicandra physaloides and Solanum nigrum (Cotrim et al., 2007; Barbosa et al., 2009; Nozaki et al., 2010; Barbosa et al., 2011), which supposedly have distinct genetic bases, this hypothesis could be tested by analyzing ToSRV populations obtained from these different hosts.