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Record information and status
Record ID
Date of creation
2012-05-04 16:20 UTC (dina.abdelhakim@cbd.int)
Date of last update
2012-05-08 13:35 UTC (andrew.bowers@cbd.int)
Date of publication
2012-05-08 13:35 UTC (andrew.bowers@cbd.int)

General Information
Transgenic Crops Expressing Bacillus thuringiensis Toxins and Biological Control
Jörg Romeis, Michael Meissle and Franz Bigler
Author’s contact information
Jörg Romeis

Agroscope FAL Reckenholz,
Swiss Federal Research Station for Agroecology and Agriculture
Reckenholzstr 191
8046 Zurich, Switzerland

Email: joerg.romeis@fal. admin.ch
  • English
Publication date
Summary, abstract or table of contents

The area devoted to growing transgenic plants expressing insecticidal Cry proteins derived from Bacillus thuringiensis (Bt) is increasing worldwide. A major concern with the adoption of Bt crops is their potential impact on nontarget organisms including biological control organisms. Regulatory frameworks should advocate a step-wise (tiered) approach to assess possible nontarget effects of Bt crops. Laboratory and glasshouse studies have revealed effects on natural enemies only when Bt-susceptible, sublethally damaged herbivores were used as prey or host, with no indication of direct toxic effects. Field studies have confirmed that the abundance and activity of parasitoids and predators are similar in Bt and non-Bt crops. In contrast, applications of conventional insecticides have usually resulted in negative impacts on biological control organisms. Because Bt-transgenic varieties can lead to substantial reductions in insecticide use in some crops, they can contribute to integrated pest management systems with a strong biological control component.
Thematic areas
Background material to the “Guidance on risk assessment of living modified organisms”
Is this document is recommend as background material for the “Guidance on Risk Assessment of Living Modified Organisms”
Section(s) of the “Guidance on Risk Assessment of Living Modified Organisms” this background material is relevant
Additional Information
Type of resource
  • Article (journal / magazine / newspaper)
doi: 10.1038/nbt1180
Publisher and its location
Nature Publishing Group
© 2006 Nature Publishing Group
9 page PDF
Nature Biothechnology
Keywords and any other relevant information
Citation: Nature Biotechnology 24, 63 - 71 (2006)