Comparison of RSS activity from NSs^TSWV mutants used in the present study.

GUS, beta-glucuronidase; wt, wild type; AGO1, Argonaute 1; RSS, RNA silencing suppressor. a Mutants are ordered according to mutated amino acid residue numbered from the amino-terminal end. b Predicted function of the mutated amino acid [22]. c RNA silencing suppression strength (relative to NSsTSWV wild type): absent (−), weak (+/−), mild (+), strong (++). Comparison of RSS activity from NSsTSWV mutants used in the present study.