Abstract
Polygalacturonase, biomass, and ascospore production by four strains of Byssochlamys fulva cultured in laboratory media supplemented with glucose, sucrose, or fructose was studied over a 20-day incubation period at 30° C. The production of polygalacturonase was variable, but most activity was detected between 4 and 8 days in 1% sugar media at an initial pH of 4 or 5. The rate of biomass production was retarded early in the incubation period in media initially at pH 3 or 4 as compared to pH 5, but the amount of growth was about the same in media containing the test sugars after 20 days. Large numbers of ascospores were produced between 8 and 10 days in media containing 5% sugar initially at pH 5 and 4. Production of ascospores was retarded at pH 3 in media containing 5% sugar as compared to media initially at pH 5 and 4.
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References
Beuchat, L. R. & R. T. Toledo. 1977. Behavior of Byssochlamys nivea ascospores in fruit syrups. Trans. Br. Mycol. Soc. 68: 65–71.
Hawker, L. E. 1950. Physiology of Fungi. University of London Press Ltd., London.
Hawker, L. E. & S. D. Chaudhuri. 1946. Growth and fruiting of certain Ascomycetous fungi as influenced by the nature and concentration of carbohydrate in the medium. Ann. Bot. N. S. 10: 185–194.
Herbert, R. J. & A. D. Larson. 1972. Asci production by Bys'sochlamys fulva on a synthetic medium. J. Food Sci. 37: 882–885.
Hull, R. 1939. Study of Byssochlamys fulva and control measures in processed fruits. Ann. Appl. Biol. 26: 800–822.
King, A. D., H. D. Michener & R. A. Ito. 1969. Control of Byssochlamys and related heat-resistant fungi in grape products. Appl. Microbiol. 18: 166–173.
Kramer, R. K., N. D. Davis & U. L. Deiner. 1976. Byssotoxin A, a secondary metabolite of Byssochlamys fulva. Appl. Environ. Microbiol. 31: 249–253.
Lilly, V. G. 1965. The chemical environment for fungal growth. In: The Fungi, Vol. 1. G. C. Ainsworth & A. S. Sussman (eds.), Academic Press, New York. p. 470.
Olliver, M. & T. Rendle. 1934. A new problem in fruit preservation. Studies on Byssochlamys fulva and its effect on the tissues of processed fruit. J. Soc. Chem. Ind., London, 53: 166–172.
Put, H. M. C. & J. Th. Kruiswijk. 1964. Disintegration and organoleptic deterioration of processed strawberries caused by the mould Byssochlamys nivea. J. Appl. Bacteriol. 27: 53–58.
Raistrick, H. & H. Smith. 1933. The metabolic products of Byssochlamys fulva Olliver and Smith. Biochem. J. 27: 1814–1819.
Rice, S. L. & L. R. Beuchat. 1978. Polygalacturonase, biomass, and ascospore production by Byssochlamys fulva. I. Effects of acids found in fruits. Mycopathologia 63: 29–34.
Rice, S. L., L. R. Beuchat & R. E. Worthington. 1977. Patulin production by Byssochlamys spp. in fruit juices. Appl. Environ. Microbiol. 34: 63: 791–796.
Splittstoesser, D. F., M. C. Cadwell & M. Martin. 1969. Ascospore production by Byssochlamys fulva. J. Food Sci. 34: 248–250.
Splittstoesser, D. F., D. L. Downing, N. F. Roger & D. I. Murdock. 1974. Influence of the harvest method on contamination of fruit by Byssochlamys fulva. J. Milk Food Technol. 37: 445–447.
Zetelaki, K. 1976. Optimum carbon source concentration for pectolytic enzyme formation of aspergilli. Process Biochem. 11: 11–19.
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Rice, S.L., Beuchat, L.R. Polygalacturonase, biomass and ascospore production by Byssochlamys fulva. II. Effects of sugars found in fruits. Mycopathologia 63, 89–93 (1978). https://doi.org/10.1007/BF00441253
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DOI: https://doi.org/10.1007/BF00441253