Based on a paper presented at the meeting ‘Biological Control: Use of Living Organisms in the Management of Invertebrate Pests, Pathogens and Weeds’, organised by the SCI Pesticides Group and held at the SCI, 14/15 Belgrave Square, London SWIX 8PS, UK on 19-20 October 1992.
Prospects and progress for Bacillus thuringiensis-based pesticides†
Article first published online: 1 MAY 2006
Copyright © 1993 John Wiley & Sons, Ltd
Volume 37, Issue 4, pages 331–335, 1993
How to Cite
Cannon, R. J. C. (1993), Prospects and progress for Bacillus thuringiensis-based pesticides. Pestic. Sci., 37: 331–335. doi: 10.1002/ps.2780370405
- Issue published online: 1 MAY 2006
- Article first published online: 1 MAY 2006
- Manuscript Accepted: 15 MAR 1993
- Manuscript Received: 26 NOV 1992
Bacillus thuringiensis (Bt)-based insecticide products constitute the overwhelming majority of biopesticides but, despite having been commercially available for over 30 years, they have made little impact (<1%) on the crop-protection market as a whole. This has been largely due to poor cost-performance factors relative to synthetic organic pesticides. However, recent biotechnological advances—including genetic modification—combined with a variety of emerging opportunities, have created the prospect of the commercialisation of a new range of highly effective Bt-based biopesticides.
Bioencapsulation of single-gene products—delta-endotoxins from selected Bt isolates—in killed Pseudomonad cells (Mycogen Corporation's ‘CellCap’ technology), offers a flexible delivery system with enhanced persistence.
This versatile approach selects only the most appropriate biotoxins, which can be used to target a number of pest species. It is anticipated that Bt-based pesticides will continue to fill an increasing number of gaps in the panoply of synthetic crop-protection chemicals. Genetically modified products offer advantages in terms of efficacy, flexibility and safety but public concerns regarding perceived risks need to be addressed.