ISSN: 0973-7510

E-ISSN: 2581-690X

Nisha Mangavil Muraleedharan, Krishnamurthy Kempagangaiah , Chaithra Krishnamurthy, Trishita Mishra and Shilpa Shree Chunchunahalli Boraiah
Camson Biotechnologies Ltd. (R&D), Doddaballapur, Bangalore – 561 203, Karnataka, India.
J Pure Appl Microbiol. 2012;6(2):957-961
© The Author(s). 2012
Received: 15/09/2011 | Accepted: 28/10/2011 | Published: 30/06/2012

Diamond Back Moth (Plutella xylostella), is one of the most serious pests on cruciferous crops. The insecticidal activities of the metabolites produced by  Serratia marcescens (CBCC 47) grown in different fermentation media were determined by testing the crude extract against diamond back moth(Plutella xylostella). The larvicidal activities of the isolates varied when grown in different medium and growth conditions. When grown in Soy-NaCl-yeast extract-glucose medium, the extract produced was more toxic, indicating an enhanced production of the metabolites. Toxicity assays showed that the toxins produced from the novel growth media were more effective in killing larvae of DBM (Diamond Back Moth) as compared to that produced from NB (Nutrient broth) medium. These observations suggest that soy-NaCl-yeast extract-glucose medium can serve as a cheap source of medium for the production of non-hazardous, biodegradable and economically viable biocide formulations based on the metabolites of the isolated Serratia marcescens.


Biocide Formulation, Biodegradable, Diamond Back Moth, Non-Hazardous, Secondary Metabolites, Serratia marcescens

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© The Author(s) 2012. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.