FER and Infertility: Taken together, the findings in the present study put forward that the invading PTs, if not all, fail to be ruptured in the infertile species ZZ, which might result from transcriptional suppressions on both the PT-harbored ANX/BUPS complex and the synergid-harbored FER/LRE complex and the shut-down of the relevant signaling in the male and female cells.