In Vitro and In Vivo Effects of α-Amylase Inhibitor From Avena sativa Seeds on Life History and Physiological Characteristics of Sitotroga cerealella (Lepidoptera: Gelechiidae)

Journal of Insect Science
Ehsan BorzouiB Naseri

Abstract

The inhibitory effects of Avena sativa L. seed extract were studied on life history and some physiological aspects of Sitotroga cerealella (Olivier; Lepidoptera: Gelechiidae). The inhibition of α-amylase activity in vitro by A. sativa proteinaceous extract suggested its potential antimetabolic effect on S. cerealella larvae. Although, chronic ingestion of A. sativa inhibitor (I10: 0.108 mg protein/artificial seed) did not show significant reduction of the growth and development of S. cerealella. However, a delay in the developmental time of immature stages was detected when S. cerealella larvae were continuously fed on I30 and I50 concentrations (0.429 and 1.11 mg protein/artificial seed, respectively) of the inhibitor. The highest realized fecundity was recorded for females which came from larvae fed on I10 concentration (102.46 ± 2.50 eggs/female), and the lowest fecundity was observed for females which came from larvae fed on I50 concentration (31.64 ± 3.17 eggs/female). The lightest weight of pupae of S. cerealella was observed on I50 concentration (2.76 ± 0.07 mg). The lowest glycogen and lipid contents of the pupae were detected on I50 concentration (50.00 ± 3.53 and 289.57 ± 29.00 µg/pupa, respectively). The lower surviv...Continue Reading

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Citations

Nov 16, 2021·Frontiers in Plant Science·Noura BechtaouiMartin Jemo

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