GMO Research Programme - Reports
Environmental impact of Bt exudates from roots of genetically modified plants
Ref EPG 1/5/156
Synopsis
It has been reported that genetically modified Bt maize exudes its insecticidal toxin from its roots into the soil. This is perhaps not surprising as it is very common for plants to produce natural exudates composed of dilute solutions of metabolites. Bt toxin present in the exudates binds to soil particles and retains its insecticidal properties for long periods. This may have environmental implications particularly in soil communities. This toxin may affect non-target organisms such as invertebrates that ingest soil particles either directly or indirectly.
The contractor was asked to
- review the available literature on insecticidal proteins found naturally in soil and their effects on soil ecology
- produce a report considering the findings of the review giving a clear assessment of the potential environmental risks and make clear proposals for research required in this area
- identify the information requirements applicants should submit to assess the risks to soil ecologies.
Start and completion dates
Project started July 2001; completed April 2002.
Final report
Available to download in Adobe Acrobat (PDF) format (1.3 MB - nb large file - you are advised to read the further information on our Help page about downloading or reading PDF documents)
Other publications
Not yet available
Contact details
Contractor
Dr H F Evans
Forest Research
Alice Holt Lodge
Farnham
Surrey GU10 4LH
hugh.evans@forestry.gsi.gov.uk
Defra
Dr Androulla Gilliland
3/H10 Ashdown House
123 Victoria Street
London, SW1E 6DE.
020 7082 8118
GM@defra.gsi.gov.uk
Page last modified:
20 April, 2004
Page published: 2 March 2004