The fungus Gnomonia comari, causal agent of strawberry leaf blotch, was inoculated at the crown of young axenized strawberry plants growing in sterilized sand. Only the roots were colonized, and the infection was symptomless. When the fungus colonized the roots in the presence of the root lesion nematode Pratylenchus penetrans, the plants were extremely stunted and their root system was necroti...

The efficacy of the nematode-trapping fungus Duddingtonia flagrans against infections by trichostrongyle nematodes in sheep was assessed throughout 6 months. Twenty Ile de France lambs were divided into two groups (control and treated groups), which were kept in separate pastures. Animals of the treated group were fed with D. flagrans twice a week (Tuesdays and Fridays). Pellets were prepared w...

We are studying the evolution of parasitism in a group of soil-living ascomycetes that can grow as saprophytes as well as parasites by forming special morphological structures called traps. Analyses of 18S ribosomal DNA sequences have shown that these fungi form a monophyletic and isolated clade among the ascomycetes. The phylogenetic patterns within this clade are concordant with the morpholog...

A mutant strain of the fungus Verticillium lecanii and selected bioregulators of Heterodera glycines were evaluated for their potential to reduce population densities of the nematode on soybean under greenhouse conditions. The bioregulators tested were the H. glycines sex pheromone vanillic acid and the pheromone analogs syringic acid, isovanillic acid, ferulic acid, 4-hydroxy-3-methoxybenzonit...

In recent years, continuing environmental problems associated with the use of nematicides (47) have introduced a sense of urgency into the search for alternative methods of nematode management. For the past 90 years, research on the biological control of nematodes with microbial agents has been done by a few dedicated nematologists who have worked in small groups with little support. About 10 y...

Root-knot nematode, Meloidogyne incognita (Kofoid and White) is one of the most destructive plant parasitic nematode species in almost all agriculture horticulture crops Sri Lanka. Biologically sound controlling measures against this has been attempted from long past with ambiguous efficacy. This paper highlights nemato-toxic potential crude leaf extract Annona glabra, extracellular metabolites...

In this study, the function of a non-ribosomal peptide synthetase-like (NRPS-like) encoding gene AOL_s00188g306 ( g306 ) was investigated to reveal association between NRPS and nematocidal activity in nematode-trapping fungus Arthrobotrys oligospora . Sequence analysis indicated that encoded product is an adenylation domain synthetases extended short-chain dehydrogenase/reductase domain-contain...