Publications by authors named "Mark Alan Jackson"

Article Synopsis
  • Beauveria bassiana is a fungus that can infect over 1000 insect species and is used in biopesticides because of its blastospores, produced easily through fermentation.
  • The study found that hyperosmotic environments, created by adding substances like polyethylene glycol (PEG200) or salts (NaCl and KCl), influenced the size and yield of blastospores, with PEG200 increasing yield but producing smaller spores.
  • The findings indicate that both ionic and non-ionic osmolytes can enhance the growth and effectiveness of B. bassiana, which is crucial for developing effective commercial fungal biopesticides.
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A major constraint to the commercial use of fungal biocontrol agents is the availability of low-cost production media and processes. Previous attempts in producing Beauveria blastospores using liquid culture fermentation processes required long fermentation times (6-8days) and produced cells that had poor survival after desiccation and storage. In this study, isolates of Beauveria bassiana and Isaria fumosorosea were evaluated for blastospore yield, desiccation tolerance, storage stability, and biocontrol efficacy using fermentation media containing acid hydrolyzed casein or cottonseed flour as the nitrogen source.

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We investigated the potential production and desiccation tolerance of microsclerotia (MS) by Brazilian strains of Metarhizium anisopliae (Ma), M. acridum (Mc) and M. robertsii (Mr).

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