Interactions between aquatic bacteria and an aquatic hyphomycete on decomposing maple leaves

► Examined interactions between Tetrachaetum elegans and bacteria. ► Fungi was not affected either by glucose amendment or bacteria. ► Bacteria did not respond consistently to glucose amendment or the fungus. ► Little evidence of resource competition or facilitation, in contrast to other studies. ► Interactions depend on environmental conditions and types of microorganisms.