Fig 6. Formation of perithecia (left panels) and the morphology of asci and ascospores within a perithecium in the F. graminearum deleted for FGSG_02052 (ΔFGSG_02052) grown on carrot agar.

WT, F. graminearum wild-type Z3643 strain; ΔFGSG_02052, a transgenic Z3643 strain lacking the FGSG_02052 gene. The perithecia formed 7, 8, 9, or 10 days after perithecia induction, and the asci and ascospores that developed within 8-day-old-perithecium were observed through a dissecting microscope (left panels) and differential interference contrast microscope (right panels), respectively. The cirrhi production from the perithecia was indicated by arrows. Scale bars = 100 μm for perithecia and 20 μm for asci/ascospores.