Effect of chemical additives on Bacillus thuringiensis (Bacillales: Bacillaceae) against Plutella xylostella (Lepidoptera: Pyralidae)

0393872 - BC 2014 RIV US eng J - Journal Article
Zhang, L. - Qiu, S. - Huang, T. - Huang, Z. - Xu, L. - Wu, C. - Gelbič, Ivan - Guan, X.
Effect of chemical additives on Bacillus thuringiensis (Bacillales: Bacillaceae) against Plutella xylostella (Lepidoptera: Pyralidae).
Journal of Economic Entomology. Roč. 106, č. 3 (2013), s. 1075-1080. ISSN 0022-0493. E-ISSN 1938-291X
Institutional research plan: CEZ:AV0Z50070508
Keywords : additives * Bacillus thuringiensis * biocontrol
Subject RIV: GF - Plant Pathology, Vermin, Weed, Plant Protection
Impact factor: 1.605, year: 2013
http://www.bioone.org/doi/pdf/10.1603/EC12288

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 beneŢt not only in reducing the cosi for Ţeld applications of biological insecticides but also by boosting the efŢcacy of B. thuringiensis.
Permanent Link: http://hdl.handle.net/11104/0222718