Insecticidal and Acetylcholinesterase Inhibition Activity of Veratrum nigrum Alkaloidal Extract against the German Cockroach (Blattella germanica)

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Cai Xianghai; Li Qingfeng; Xiao Lei; Lu Hailiang; Jian Jian; Huang Jianbo; Yuan Jianzhong

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Journal: JOURNAL OF ARTHROPOD-BORNE DISEASES Year:2018 | Volume:12 | Issue:4 Page(s): 414-420

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Title

Insecticidal and Acetylcholinesterase Inhibition Activity of Veratrum nigrum Alkaloidal Extract against the German Cockroach (Blattella germanica)

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Keywords

Insecticidal activity

Acetylcholinesterase inhibition

Veratrum nigrum

Medicinal plant

German cockroach

Abstract

Background: Veratrum nigrum (Liliaceae) is perennial Medicinal plant widely used to treat various conditions. To de ter mine its insecticidal properties against the German cockroach (Blattella germanica), several laboratory tests were car ried out. Methods: A 4kg dry sample of V. nigrum root was purchased from the medicinal material market in Yunnan Province in 2015, China. In contact toxicity tests, V. nigrum alkaloidal extract was topically applied to the abdomen of cockroaches using a micro-applicator. In vitro acetylcholinesterase (AChE) activity tests were performed using a modified Ellman method. Results: Veratrum nigrum alkaloidal extract was toxic to male adults and 4th nymphs cockroaches, with median lethal dose (LD50) values of 14. 90µ g/insect, 14. 21µ g/insect for adults and 41. 45µ g/insect, 39. 01µ g/insect for 4th nymphs after 24h and 48h exposure, respectively. There was a significant difference between adults and nymphs in terms of tolerance to V. nigrum alkaloidal extract. There was no significant difference in mortalities at 24h and 48h, the lethal effect of V. nigrum alkaloidal extract on German cockroach was quick. AChE activity tests showed that V. nigrum alkaloidal extract had an excellent inhibitory effect on AChE: inhibition in the 4th nymphs and male adults had 50% inhibiting concentra tion (IC50) values of 3. 56mg/ml and 5. 78mg/ml respectively. The inhibitory effect of AChE activity was positively cor related with inhibitory time (0– 20min), at a concentration of 1mg/ml, inhibition of nymph and adult AChE activity had 50% inhibiting time (IT50) values of 8. 34min and 16. 75min, respectively. Conclusion: V. nigrum may be explored as a potential natural insecticide for control of the German cockroach.

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APA: Copy

Cai, Xianghai, Li, Qingfeng, Xiao, Lei, Lu, Hailiang, Jian, Jian, Huang, Jianbo, & Yuan, Jianzhong. (2018). Insecticidal and Acetylcholinesterase Inhibition Activity of Veratrum nigrum Alkaloidal Extract against the German Cockroach (Blattella germanica). JOURNAL OF ARTHROPOD-BORNE DISEASES, 12(4), 414-420. SID. https://sid.ir/paper/313021/en

Vancouver: Copy

Cai Xianghai, Li Qingfeng, Xiao Lei, Lu Hailiang, Jian Jian, Huang Jianbo, Yuan Jianzhong. Insecticidal and Acetylcholinesterase Inhibition Activity of Veratrum nigrum Alkaloidal Extract against the German Cockroach (Blattella germanica). JOURNAL OF ARTHROPOD-BORNE DISEASES[Internet]. 2018;12(4):414-420. Available from: https://sid.ir/paper/313021/en

IEEE: Copy

Xianghai Cai, Qingfeng Li, Lei Xiao, Hailiang Lu, Jian Jian, Jianbo Huang, and Jianzhong Yuan, “Insecticidal and Acetylcholinesterase Inhibition Activity of Veratrum nigrum Alkaloidal Extract against the German Cockroach (Blattella germanica),” JOURNAL OF ARTHROPOD-BORNE DISEASES, vol. 12, no. 4, pp. 414–420, 2018, [Online]. Available: https://sid.ir/paper/313021/en

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