Conidia fusion (CF) is a commonly observed structure in fungi. However, it has not been systematically studied. This study examined 2457 strains of nematode-trapping fungi (NTF) to explore the species specificity, physiological period, and significance CF. The results demonstrated that only six Arthrobotrys can form CF among sixty-five tested NTF species. studies on model oligospora (DL228) sho...