The functional significance of amylase polymorphism in Drosophila melanogaster V. The effect of food components on amylase and α-glucosidase activity

✍ Scribed by A. J. W. Hoorn; W. Scharloo

• Publisher: Springer Netherlands
• Year: 1978
• Tongue: English
• Weight: 482 KB
• Volume: 49
• Category: Article
• ISSN: 0016-6707
• DOI: 10.1007/bf00120564

✦ Synopsis

The effects of different feeding conditions on amylase and c~-gtucosidase activities were studied in larvae and flies of Drosophila melanogaster homozygous for different amylase alleles.

Starch generally enhances amylase activities in both strains, but the ultimate effect depends on other components of the food. The availability and concentration of yeast plays an important role and can have differential effects on enzyme activities of different genotypes, a-Glucosidase activities increase during adult development. These activities are higher in starving flies than in flies fed with disaccharides. The level of c~-glucosidase activity is similar for different disaccharides, but is even higher when starch is fed.