Two bacteria causing farmer's lung: Fine structure ofThermoactinomyces vulgaris andSaccharopolyspora rectivirgula |
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| Authors: | Dr Kari E Reijula MD PhD |
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| Institution: | (1) Biological Control of Insects Research Laboratory, USDA/ARS, Research Park, P.O. Box 7629, 65205 Columbia, MO, USA;(2) National Center for Agricultural Utilization Research, Microbial Properties Research Center, USDA/ARS, Peoria, Illinois, USA |
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| Abstract: | Larval cuticle ofHelicoverpa (Heliothis)zea and yeast extract added to a minimal medium (MM) induced germination of conidia ofNomuraea rileyi whereas sterile distilled water or MM alone did not. Yeast extract increased mycelial yield, but when cuticle was added, mycelial yield significantly decreased. Proteases and chitinases ofN. rileyi were only expressed when cuticle was added to the MM.This article reports the results of research only. Mention of a proprietary product in this paper does not constitute a recommendation for use by US Department of Agriculture. |
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| Keywords: | Entomopathogenic fungi Germination Growth Hydrolytic enzymes Insect cuticle Nomuraea rileyi |
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