Abstract
Colletotrichum coccodes is being examined as a biological weed control agent for velvetleaf (Abutilon theophrasti). A modified Richard's solution containing V-8 juice has been used to produce C. coccodes spores for growth-chamber and field experiments. Although C. coccodes sporulates well in this medium, V-8 is not available as a bulk commodity and is too expensive for commercial production. Eight substrates were evaluated as replacements for V-8 juice in modified Richard's solution. Soy protein and casamino acids were equal to V-8 juice for sporulation of C. coccodes. The Plackett-Burman experimental design was used to test the relative importance of various components of a complex medium based on soy protein on mycelium biomass production and sporulation of C. coccodes. A new medium composed of sucrose (20 g/l), soy protein (5 g/l), KNO3 (5 g/l), KH2PO4 (5 g/l), MgSO4 (2 g/l), CaCl2 (0.5 g/l), and CuSO4 (0.05 g/l) was selected as the base medium for further study in the development of a low-cost and effective medium for C. coccodes spore production.
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Received: 29 July 1996 / Received revision: 21 October 1996 / Accepted: 10 November 1996
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Yu, X., Hallett, S., Sheppard, J. et al. Application of the Plackett-Burman experimental design to evaluate nutritional requirements for the production of Colletotrichum coccodes spores. Appl Microbiol Biotechnol 47, 301–305 (1997). https://doi.org/10.1007/s002530050930
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DOI: https://doi.org/10.1007/s002530050930