Search

There is a critical need to develop effective, high-quality, fungal-based biopesticides for use against ticks. Dermacentor albipictus, the winter tick, is a one-host species that can cause mortalit...

We established a fungal production platform by focusing on substrates of solid culture for conidial productivity and thermotolerance, and focusing on surfactants to effectively deliver fungal conid...

Persistence of granular formulations of Beauveria bassiana sensu lato, strains GHA726 and ERL1170, and Metarhizium anisopliae sensu lato, strains ERL824 and ERL701, applied to forest soil was documented. One formulation was prepared by producing fungi on millet and at application adding cooked, dried millet to provide additional nutrients for fungal growth. The other was made by producing fungi on corn starch ‘packing peanuts’, a biodegradable packaging material, adding additional packing peanuts as a nutrient base. The trial was conducted in three sites in a forest predominating in sugar maple (Acer saccharum) in Underhill, VT, USA. In each site, 33 dominant sugar maples were randomly selected. A 1-m2 plot located 1 m from the bole of the tree was established. Soil samples were collected before application, and 1 h, 2, 4, 8, 12 and 16 wk post-application. Fungal levels were estimated based on number of colony-forming units (CFUs). A significant increase in CFUs was observed 2 wk post-application in plots...

Conidia from Beauveria bassiana and Metarhizium anisopliae, produced in quarter-strength Sabouraud dextrose agar amended with yeast extract, whey permeate, and millet agar, were exposed to 45°C for 90 min prior to and at 30 d post-storage at 25°C. B. bassiana produced in whey permeate or millet had better thermotolerance than the other treatments after the storage.

The two FPLC fractions from Beauveria bassiana SFB-205 supernatant, displaying chitinase or Pr1/Pr2 protease activity were bioassayed against Aphis gossypii in different ratios. The decrease of the aphid population was more significantly influenced by the chitinase fraction in a dosage-dependent manner.