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RISS 인기검색어
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- 저자 : Mehdi Dastranj (검색결과 1 건)
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Mehdi Dastranj,Ali Reza Bandani,Mohammad Mehrabadi 한국응용곤충학회 2013 Journal of Asia-Pacific Entomology Vol.16 No.3
Tenebrio molitor L. (Coleoptera: Tenebrionidae), is an international and serious pest of stored products. So far nothing is known about the activity for each growth stage digestive enzyme regarding this insect species. Thus, the aim of the current study was to get in depth analysis of the stage specific digestion and to investigate the effect of cereal (wheat cultivars including MV17, Aflak, Sivand, Saymon, and Zare) and legume (bean) seed extracts on the two main digestive enzymes i.e. α-amylases and proteases. Therefore, gut enzymes were extracted using distilled water and wheat cultivars and bean seed proteinaceous compounds were extracted using 0.1 M NaCl. Results showed that a steady state increase in the number and amount of digestive enzyme activities from first to fourth instar larvae was seen in both enzyme and in gel assays. In the first instar larvae (L1) only one band of α-amylase activity was seen (A1), whereas in the second (L2),third (L3), fourth (L4) and fifth (L5) instar larvae as well as in the adult (A) more than one amylase band (up to 4 isoenzymes) was seen. The same pattern was observed for α and β glucosidases and proteases. Probit analysis showed that bean and MV17 inhibited the amylase activity with an I50 of 9.73 and 7.4 μg, respectively. The same cultivar seed extract inhibited protease activity with I50s of 11.54 and 6.5 μg proteins. It is concluded that proteinaceous extract of cereals and bean seeds have a strong potential to be used in this pest management.
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