Effect of chemical additives on Bacillus thuringiensis (Bacillales: Bacillaceae) against Plutella xylostella (Lepidoptera: Pyralidae)
文献类型: 外文期刊
作者: Zhang, L. 1 ; Qiu, S. 2 ; Huang, T. 1 ; Huang, Z. 1 ; Xu, L. 1 ; Wu, C. 1 ; Gelbic, I. 3 ; Guan, X. 1 ;
作者机构: 1.Fujian Agr & Forestry Univ, Key Lab Biopesticide & Chem Biol, Minist Educ, Fuzhou 350002, Fujian, Peoples R China
2.Fujian Acad Agr Sci, Vegetable Res Ctr, Fuzhou 350013, Fujian, Peoples R China
3.Acad Sci Czech Republic, Inst Entomol, Ctr Biol, CR-37005 Ceske Budejovice, Czech Republic
关键词: Additives;Bacillus thuringiensis;Bioassay;Biocontrol;Plutella xylostella
期刊名称:JOURNAL OF ECONOMIC ENTOMOLOGY ( 影响因子:2.381; 五年影响因子:2.568 )
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收录情况: SCI
摘要: To examine the effect of chemical additives on Bacillus thuringiensis (Berliner) against Plutella xylostella (L.), inorganic salts, nitrogenous compounds, protein solubilizing agents, and organic acids were selected and tested. The chosen materials are low in cost and environmentally safe. Results show that many inorganic salts can increase the activity of B. thuringiensis in a range of 1.31-to 3.08-fold. These include calcium acetate, calcium chloride, calcium hydroxide, calcium sulfate, calcium carbonate, sodium carbonate, sodium acetate, potassium hydroxide, potassium carbonate, potassium acetate, magnesium chloride, magnesium sulfate, and zinc sulfate. Nitrogenous compounds, including peptone, sodium nitrate, and ammonium nitrate, can enhance the activity of B. thuringiensis 1.62-, 1.32-, and 1.37-fold, respectively. Among the protein solubilizing agents, EDTA, urea, mercaptoethanol and dipotassium hydrogen phosphate increased the activity of B. thuringiensis 1.62- to 2.34-fold. Among the organic acids, maleic and citric acids boosted the activity 1.45- and 1.55-fold, respectively. Meanwhile, sodium benzoate and resorcinol led to 1.74- and 1.44-fold activity gains, respectively. Use of appropriate additives could provide great benefit not only in reducing the costs for field applications of biological insecticides but also by boosting the efficacy of B. thuringiensis.
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