Table S1.
Fungal and viral strains used in this study
| Strain | Description | Source |
| Viral | ||
| CHV1-Δp69 | A mutant of CHV1 lacking the entire ORFA encoding a VSR, p29 | (62) |
| MyRV1 | A mycoreovirus with a 11-segmented dsRNA genome | (49) |
| CHV1-EP713 | Prototype of Cryphonectria hypovirus 1 in the family Hypoviridae | (63) |
| Fungal | ||
| EP155 | Standard strain of C. parasitica (virus-free) | ATCC 38755 |
| Pdcl2D2-egfp | EP155 transformant expressing egfp under the control of the dcl2 promoter | Present study |
| Pdcl2D2-egfp+CHV1-Δp69 | Pdcl2D2-egfp cotransformed with an infectious cDNA clone of CHV1-Δp69and serving as the parental strain for random mutagenesis | Present study |
| Δdcl2 | dcl-2 knockout mutant of EP155 (RNA silencing defective, virus-free) | (16) |
| Δagl2 | agl-2 knockout mutant of EP155 (RNA silencing defective, virus-free) | (4) |
| Δdcl2+ Pdcl2D2-egfp | Δdcl2 expressing egfp under the control of the dcl2 promoter | Present study |
| Δagl2+ Pdcl2D2-egfp | Δagl2 expressing egfp under the control of the dcl2 promoter | Present study |
| DK80 | A mutant of EP155 lacking the cpk80 gene involved in nonhomologous recombination | (23) |
| B343 | EP155 carrying a mutagenic cassette with a NeoR gene in the sgf73 locus and an infectious cDNA of CHV1-Δp69 | Present study |
| Δsgf73 | DK80 disrupted for sgf73 encoding a subunit of the DUB module of SAGA | Present study |
| Δsgf73+sgf73 | Δsgf73 complemented with wild-type sgf73 | Present study |
| Δsgf73+sgf73-egfp | Δsgf73 complemented with wild-type sgf73 fused with egfp | Present study |
| Δgcn5 | DK80 disrupted for gcn5 encoding a catalytic subunit of the HAT module of SAGA | Present study |
| Δada2 | DK80 disrupted for ada2 encoding a subunit of the HAT module of SAGA | Present study |
| Δubp8 | DK80 disrupted for ubp8 encoding a subunit of the DUB module of SAGA | Present study |
| Δlzf1 | DK80 disrupted for lzf1 encoding a LYAR-type zinc-finger protein | Present study |