Uptake of Bt‐toxin by herbivores feeding on transgenic maize and consequences for the predator Chrysoperla carnea

By A. Dutton, H. Klein, Jörg Romeis, Franz Bigler. 2002

376 citations recorded by the source corpus.

Subfields: Insect Science, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/8979ba662f0fdecceb3a297f90727cb9fdf6f875

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In Insect Science

1. S. Naranjo
2. Jörg Romeis
3. M. Meissle
4. J. Ruberson
5. J. Torres
6. G. Dively
7. Ramon Albajes
8. Yunhe Li

In Molecular Biology

1. S. Naranjo
2. Jörg Romeis
3. M. Meissle
4. J. Ruberson
5. J. Torres
6. G. Dively
7. Franz Bigler
8. G. Lövei

Citations in the corpus

• Biological Activity of Cry1Ab Toxin Expressed by Bt Maize Following Ingestion by Herbivorous Arthropods and Exposure of the Predator Chrysoperla carnea (2006, methodology): “Since S. littoralis is susceptible to the Cry1Ab (Dutton et al., 2002; 2005), it can be assumed that activation processes (solubilisation and/or cleavage) occur in its mid-gut.”
• Non‐target risk assessment of Bt crops – Cry protein uptake by aphids (2011, background): “For spider mites, Cry protein levels (per lg FW) have been found to be in the order of magnitude of that in leave tissue or even above (Dutton et al. 2002, 2004; Obrist et al. 2006a,c; Torres and Ruberson 2008; Meissle and Romeis 2009b; Li and Romeis 2010).”
• Arthropod Abundance and Diversity in Bt and Non-Bt Cotton Fields (2004, background): “Such interactions are likely to be complex, because not all herbivores that feed on Bt plants uptake the toxin nor are natural enemies always affected by consuming prey that have taken up the toxin (Dutton et al. 2002).”
• Impact of transgenic cotton plants on a non‐target pest, Aphis gossypii Glover (2005, background): “Apparently, the Bt endotoxins expressed in the cotton do not act on the aphids as an obligatory phloem sap feeder; indeed, Bt toxin was not detected in the phloem sap, or in aphids’ honeydew (Raps et al., 2001; Dutton et al., 2002).”
• Abundance of non-target pests in transgenic Bt-maize: A farm scale study (2005, background): “…2003; De la Poza et al., 2005) or the laboratory (Orr & Landis, 1997; Zwahlen et al., 2000; Al-Deeb et al., 2001; Dutton et al., 2002; Candolfi et al., 2004; Pons et al., 2004) except for the lacewing Chrysoperla carnea Stephens fed on lepidopterous larvae (Hilbeck, 1998; Dutton et al., 2002).”
• Exposure of arthropod predators to Cry1Ab toxin in Bt maize fields (2006, methodology): “E-mail: franz.bigler@fal.admin.ch # 2006 The Authors Journal compilation # 2006 The Royal Entomological Society 143 the level of toxin contained in their food source has to be determined (Dutton et al., 2002, 2003).”
• The impact of transgenic plants on natural enemies: a critical review of laboratory studies (2005, background): “, for lack of ecological realism (Hilbeck et al., 1998a; Dutton et al., 2002).”
• Genetic Transformation of Crops for Insect Resistance: Potential and Limitations (2004, background): “padi (which did not ingest the Bt toxin) did not affect survival or development of the predator ( Dutton et al. , 2002 ).”
• Canopy- and Ground-Dwelling Predatory Arthropods in Commercial Bt and non-Bt Cotton Fields: Patterns and Mechanisms (2005, background): “…Entomological Society of America partially susceptible to Cry1Ac toxin and experience some survival and developmental delay (Perlak et al. 2001, Stewart et al. 2001) or by feeding on other herbivores, such as spider mites and thrips, that may pick upBt toxin from plants (Dutton et al. 2002, 2004).”
• Expression of Bacillus thuringiensis Cry1Ac protein in cotton plants, acquisition by pests and predators: a tritrophic analysis (2006, background): “Similarly, almost 21% of original Cry1Ab expressed in Bt corn (event N4640Bt) was detected in S. littoralis larvae, whereas 73% was detected in the spider mite, Tetranychus urticae (Koch) ( Dutton et al. , 2002 ).”
• Transgenic crops expressing Bacillus thuringiensis toxins and biological control (2006, background): “carnea larvae are fed lepidopteran larvae reared on Cry1Ab-expressing maize, our studie”
• Assessing the risks of insect resistant transgenic plants on entomophagous arthropods Bt-maize expressing Cry1Ab as a case study (2003, background): “Exposure of phytophagous arthropods to Bt-toxin Considering the feeding behaviour of herbivores, and the expression of Bttoxin in maize (i.e. Bt11), it can be established that all major plant chewing herbivores ingest the toxin upon feeding on Bt-maize (Table 5) given that plant parts fed upon conta”
• A faunistic approach to assess potential side-effects of genetically modified Bt-Corn on non-target arthropods under field conditions (2004, background): “For instance, because the Bt-toxin is absent from the phloem (Raps et al. , 2001), phloem feeding arthropods are not exposed, as Dutton et al. (2002) could show, and C. carnea fed on R. padi are not affected.”
• Transgenic Bt maize and Rhopalosiphum padi (Hom., Aphididae) performance (2004, background): “padi are not susceptible to the Cry1Ab toxin (Dogan et al., 1996; Lozzia et al., 1998; Head et al., 2001; Raps et al., 2001; Dutton et al., 2002).”