Influence of actinomycete isolates on cereal cyst nematode heterodera filipjevi juvenile motility

The effects of 126 actinomycete isolates were investigated in vitro on the motility of the second stage juveniles of the cereal cyst nematode, Heterodera filipjevi Madzhidow. Among them, isolate 3208 inhibited the motility of juveniles by 56.6% more than the negative control after one day of exposure. Motility inhibition reached 59.6% with isolate 3307 relative to the negative control after three days of exposure. All active actinomycete isolates were identified at the genus level as Streptomyces spp. Some of the isolates appear promising and worthy of further investigation for use as bio-control agents.