S2 Table is incomplete. Please view the complete S2 Table here.There is an error in the third subsection of the Results section, entitled “sop1 specifically suppresses the splicing-defective pas2-1 allele”. The sentence “For this purpose, we introgressed sop1-5, a knock-out allele, that harbours a T-DNA insertion in the At5g21580 locus which encodes the SOP1 protein (see below), into the original pas2-1 mutant as well as into pas1-2, pas2-4 and pas3-1 mutants [16,21,22].” should read: “For this purpose, we introgressed sop1-5, a knock-out allele, that harbours a T-DNA insertion in the At1g21580 locus which encodes the SOP1 protein (see below), into the original pas2-1 mutant as well as into pas1-2, pas2-4 and pas3-1 mutants [16,21,22].”