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Scientia Silvae Sinicae ›› 2010, Vol. 46 ›› Issue (10): 103-107.doi: 10.11707/j.1001-7488.20101017

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Acaricidal Activities of Polygonum aviculare Extracts against Tetranychus cinnabarinus and　Their Effects on Enzyme Activities in the Mite

Wang Younian1;Li Qing1,2;Li Zhaohui2;Shi Guanglu1   

  1. 1.Department of Biotechnology Beijing University of AgricultureKey Laboratory of Urban Agriculture (North) of Ministry of Agriculture Key Laboratory of New Technology of gricultural Application of Beijing Beijing 102206;2.College of Plant Protection Shandong Agricultural University Tai'an 271018
  • Received:2009-10-11 Revised:2009-12-04 Online:2010-10-25 Published:2010-10-25

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Abstract:

This paper showed a study on acaricidal activities of the plant extracts from Polygonum aviculare against Tetranychus cinnabarinus and the effects on the activities of several relevant enzymes. The plant extracts were extracted using different solvents such as chloroform, petroleum ether and methanol. It was found that the corrected mortality of female adults could reach 89.95% (2 mg·mL-1) and the half lethal concentration (LC50) was (0.715 3±0.125 3) mg·mL-1 when using chloroform as the solvent, which exhibited best acaricidal activities among three solvent extracts (P<0.05). Through further extraction and column chromatography, we obtained 19 components from the chloroform extracts, and No.2, 7, 8, 15, 16, 17 and 18 components had acaricidal activities higher than 70%, among them, No.16 caused the mites the highest motality (87.12%). Furthermore, colorimetry assay showed that the component No.16 could affect the activity of acetylcholinesterase (AchE), Na+,K+ -ATPase, GSH-S-transferase (GSTs) of T. cinnabarinus.

Key words: Tetranychus cinnabarinus, Polygonum aviculare, acetylcholinesterase (AchE), Na+, K+ -ATPase, GSH-S-transferase