jyIs8 [pals-5p::GFP + myo-2p::mCherry] X. virIs1 [pHIP::OrsayRNA1 + pHIP::OrsayRNA2 + myo-2p::YFP]. viro-9(vir18) is a homozygous recessive missense mutation. Orsay virus replication defective. GFP expression induced in the intestine after intracellular infection or proteasomal inhibition.