Investigation of Biopesticides for the Pest Control Through Inhibition of the Acetylcholinesterase Purified from Loxostege sticticalis (L.) (Lepidoptera: Crambidae)

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dc.contributor.authorKizil, Demet
dc.date.accessioned2026-02-08T15:15:01Z
dc.date.available2026-02-08T15:15:01Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractAcetylcholinesterase (AChE) is a cholinergic enzyme called acetylcholine acetylhydrolase. Acetylcholinesterase inhibition is one of the prominent methods in studies on pest control management. In this study, AChE was purified 103.7-fold from Loxostege sticticalis (L.) using an Edrophonium-Sepharose 6B affinity column, and some kinetic properties were investigated. The molecular weight of the purified enzyme was determined by Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis (SDS-PAGE). Inhibition studies of AChE were realized with tacrine, edrophonium chloride, and cypermethrin, which are known inhibitors of AChE, as well as aqueous extracts of certain plant leaves. The subunit molecular weight of purified AChE was estimated to be approximately 56 kDa by SDS-PAGE analysis. The maximum activity of Loxostege sticticalis AChE was specified at 40.0 degrees C and pH 8.0. Vmax, Km, and kcat values of the AChE were determined as 243.9 +/- 15.7 EU/mg protein, 0.122 +/- 0.06 mM, and 13.7 +/- 2.7 min-1, respectively. In the inhibition studies, the IC50 values of tacrine, edrophonium chloride and cypermethrin were found to be 3.4 +/- 0.5, 0.08 +/- 0.006 and 85.0 +/- 4.1 mu M, respectively. Besides, the IC50 values of aqueous extracts of olive leaf, alder leaf, walnut leaf, cherry laurel leaf, and plane leaf were as 12.0 +/- 0.6, 15.2 +/- 1.3, 32.1 +/- 1.5, 58.3 +/- 1.9, and 75.2 +/- 2.8 mu g dry matter/mL, respectively. In addition, the oleuropein and phenolic substance amounts of these plant extracts were determined and correlated with the IC50 values. Consequently, the plant extracts used in this study may be recommended as an alternative biopesticide source to control such pests via AChE inhibition.
dc.identifier.doi10.1007/s12010-025-05363-5
dc.identifier.endpage6984
dc.identifier.issn0273-2289
dc.identifier.issn1559-0291
dc.identifier.issue10
dc.identifier.pmid40900406
dc.identifier.scopus2-s2.0-105015088664
dc.identifier.scopusqualityQ2
dc.identifier.startpage6962
dc.identifier.urihttps://doi.org/10.1007/s12010-025-05363-5
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5564
dc.identifier.volume197
dc.identifier.wosWOS:001562471400001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofApplied Biochemistry and Biotechnology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectLoxostege sticticalis (L.)
dc.subjectAcetylcholinesterase
dc.subjectInhibition
dc.subjectPest management
dc.subjectBiopesticide
dc.titleInvestigation of Biopesticides for the Pest Control Through Inhibition of the Acetylcholinesterase Purified from Loxostege sticticalis (L.) (Lepidoptera: Crambidae)
dc.typeArticle

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