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Scientia Silvae Sinicae ›› 2010, Vol. 46 ›› Issue (10): 91-94.doi: 10.11707/j.1001-7488.20101015

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Acarocidal Actions of Euphorbia fischeriana against Tetranychus cinnabarinus

Liu Suqi1;Gu Yajing1;Wang Haixiang2;Dong Hailong1;Shi Guanglu3;Cao Hui1   

  1. 1 Agronomy College Shanxi Agricultural University Taigu 030801;2 Forest College Shanxi Agricultural University Taigu 030801;3 Key Laboratory of New Technology of Agricultural Application Beijing 102206
  • Received:2009-05-07 Revised:2010-06-02 Online:2010-10-25 Published:2010-10-25

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Abstract:

The fraction 11 (EFPE-11) extract of Euphorbia fischeriana with petroleum ether was tested for bio-activity and mechanisms, including the effect on the protein content, the activities of GSTs, AchE and Ca2+-Mg2+ATPase of Tetranychus cinnabarinus. The symptomatic expression and the results of the action mechanism indicated that EFPE-11 could interrupt the nerve transmission of mites. The survival rate of mites began to decrease quickly when treated with EFPE-11 in 12 h. The activity of GSTs in treated mites was activated, but the activity of acetyl cholinesterase(AchE) was inhibited. The activity of Ca2+-Mg2+ATPase was strongly inhibited. The inhibition of the AchE and Ca2+-Mg2+ATPase activity can cause interruption of the nerve transmission and eventually cause mite death. The results suggested that the interruption of the nerve conduction could be the main reason for EFPE-11 against mites.

Key words: Euphorbia fischeriana, Tetranychus cinnabarinus, action mechanism