NDLI: Growth-suppressive effect of the α-amylase inhibitor of Triticum aestivum on stored-product mites varies by the species and type of diet

Content Provider	Springer Nature Link
Author	Hubert, Jan Nesvorna, Marta Erban, Tomas
Copyright Year	2013
Abstract	A naturally occurring α-amylase inhibitor (α-AI) of Triticum aestivum protects wheat grain from gramnivorous arthropod pests. The α-AI (Type-I) was incorporated into carbohydrate and protein diets to test its inhibitory activity on the stored-product mites Acarus siro, Lepidoglyphus destructor and Tyrophagus putrescentiae (Acari: Astigmata). Growth tests of mites fed the various diets were used to compare the suppressive effects. The final population size of mites attained from an initial population of 50 specimens maintained under controlled conditions (85 % relative humidity and 25 °C) was compared after 21 days of cultivation. The results showed that α-AI in the concentration in the range of 0.01–1 mg g−1 did not suppress the growth of the tested stored-product mites. α-AI at a concentration of 10 mg g−1 exerted a growth-suppressive effect that depended on the diet and species of the mites. The growth rate of A. siro was affected by the type of diet and was higher on carbohydrate diet than on the protein diet, the suppressive effect of α-AI was on the both diets. The growth-suppressive effect of α-AI on L. destructor and T. putrescentiae was significant when they were fed the protein diet but not when they were fed the carbohydrate diet. The higher resistance of tested mites to α-AI (proteinaceous) compared to non-proteinaceous acarbose corresponds to a powerful proteotolytic system in the mite gut. The results are discussed in terms of the adaptability of mites to utilize the starch from food sources.
Starting Page	57
Ending Page	65
Page Count	9
File Format	PDF
ISSN	01688162
Journal	Experimental & Applied Acarology
Volume Number	62
Issue Number	1
e-ISSN	15729702
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-08-02
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	α-Amylase inhibitor Wheat Digestion Storage Mite Entomology Animal Systematics/Taxonomy/Biogeography Animal Genetics and Genomics Animal Ecology Life Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Medicine Insect Science

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