UQCRQ and infection: The QCR8 gene is well conserved in plants, and our Y2H assay further showed that SsSSVP1∆SP could interact with all the homologs of QCR8 in A. thaliana and N. benthamiana (Fig 7A and S6 Fig), indicating the possible universal existence of this necrotrophic interaction during the infection of S. sclerotiorum on many hosts.