Conidia Fusion: A Mechanism for Fungal Adaptation to Nutrient-Poor Habitats

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) showed occurred both shed unshed plus mature immature conidia. Additionally, conidia rate (CFR) increased significantly with decrease nutrient concentration habitats. body (CFB) produced by A. revealed more contained CFB, faster denser mycelia CFB germinated weak medium soil plates. On one hand, rapid mycelial extension beneficial for quickly find new sources habitats uneven distribution. other dense mycelium increases contact area environment, improving absorption efficiency, which conducive survival environment. In addition, all produce smaller Based this observation, may be strategy balance defects (nutrient deficiency) caused miniaturization.