Effect of Chryseobacterium sp. TFB cells with its cell-free supernatant on trap formation in nematode-trapping fungi
CT and MT were observed in all the nematode-trapping fungal species tested. However, the extent of trap formation differed between species. Arthrobotrys oligospora strains isolated from different soils could form CT and MT frequently as A. oligospora ATCC 24927 (data not shown). Monacrosporium ellipsosporum also formed many sticky knobs, most frequently at short intervals on young hyphae (data not shown). Arthrobotrys dactyloides developed fewer constricting rings and Arthrobotrys musiformis formed fewer traps than the above mentioned species, and traps were all on the long germination hyphae (data not shown).