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Transgenic crops expressing Bacillus thuringiensis toxins and biological control
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… Expand
Uptake of Bt‐toxin by herbivores feeding on transgenic maize and consequences for the predator Chrysoperla carnea
Abstract 1. Chrysoperla carnea is an important predatory insect in maize. To assess the ecological effects of Bt‐maize, expressing the Cry1Ab protein, on larvae of this predator, the following… Expand
Bacterial community structures in honeybee intestines and their response to two insecticidal proteins.
- D. Babendreier, D. Joller, J. Romeis, F. Bigler, F. Widmer
- Biology, Medicine
- FEMS microbiology ecology
- 1 March 2007
In this study, the effects of the Bt-toxin Cry1Ab and a soybean trypsin inhibitor (SBTI) on intestinal bacterial communities of adult honeybees (Apis mellifera) were investigated. It was hypothesized… Expand
Assessment of risk of insect-resistant transgenic crops to nontarget arthropods
- J. Romeis, D. Bartsch, +16 authors Jeffrey D Wolt
- Medicine, Biology
- Nature Biotechnology
- 1 February 2008
An international initiative is developing a scientifically rigorous approach to evaluate the potential risks to nontarget arthropods (NTAs) posed by insect-resistant, genetically modified (IRGM)… Expand
Nectar and pollen feeding by insect herbivores and implications for multitrophic interactions.
Among herbivorous insects with a complete metamorphosis the larval and adult stages usually differ considerably in their nutritional requirements and food ecology. Often, feeding on plant structural… Expand
Pollen consumption in honey bee larvae: a step forward in the risk assessment of transgenic plants
In order to assess the potential impacts of transgenic plants on larvae of the honey bee, Apis mellifera, information on pollen consumption is needed. We here report on experiments that were… Expand
Assessing the risks of insect resistant transgenic plants on entomophagous arthropods Bt-maize expressing Cry1Ab as a case study
One of the primary concerns related to theadoption of insect resistant transgenic plantsin the environment is the detrimental effectthat these may pose on non-target organisms,including entomophagous… Expand
Bacillus thuringiensis toxin (Cry1Ab) has no direct effect on larvae of the green lacewing Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae).
Earlier studies have shown that larvae of the green lacewing predator Chrysoperla carnea are negatively affected when preying on lepidopteran larvae that had been fed with transgenic maize expressing… Expand
Insect pests of pigeonpea and their management.
Pigeonpea (Cajanus cajan) is an important crop in semi-arid tropical and subtropical farming systems, providing high quality vegetable protein, animal feed, and firewood. Insect pests feeding on… Expand
Biological Activity of Cry1Ab Toxin Expressed by Bt Maize Following Ingestion by Herbivorous Arthropods and Exposure of the Predator Chrysoperla carnea
A major concern regarding the deployment of insect resistant transgenic plants is their potential impact on non-target organisms, in particular on beneficial arthropods such as predators. To assess… Expand