“…Begomoviruses have either monopartite or bipartite genomes (Hanley-Bowdoin et al, 2000;Fauquet et al, 2003). In recent years, a b-satellite molecule, which is a circular single-stranded DNA of approximately 1,350 nucleotides, has been associated with some monopartite begomoviruses, where it is essential for the induction of typical disease symptoms (Saunders et al, 2000(Saunders et al, , 2003Briddon et al, 2001;Jose and Usha, 2003;Cui et al, 2004). Full-length b-satellite molecules encode an approximately 13.5-kD protein known as bC1 on the complementary sense strand.…”