Bt toxin is released in root exudates from 12 transgenic corn hybrids representing three transformation events

By D. Saxena, S. Flores, G. Stotzky. 2002

223 citations recorded by the source corpus.

Subfields: Biotechnology, Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/b24d1815a422aeff5c5f9ab043b7185022826c07

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biotechnology

1. H. Sharma
2. David W. Hopkins
3. E. Gregorich
4. J. Crouch
5. Alan Raybould
6. G. Stotzky
7. K. Sharma
8. P. Jauhar

In Molecular Biology

1. H. Sharma
2. E. Gregorich
3. David W. Hopkins
4. G. Stotzky
5. Biao Liu
6. Chongren Xu
7. Haigen Xu
8. Feng-ming Yan

In Plant Science

1. E. Gregorich
2. David W. Hopkins
3. H. Sharma
4. M. Tesfaye
5. D. Samac
6. G. Stotzky
7. C. Vance
8. Biao Liu

Citations in the corpus

• A faunistic approach to assess potential side-effects of genetically modified Bt-Corn on non-target arthropods under field conditions (2004, background): “These toxins can be persistent when bound to clay or humic acids, since they are protected against microbial degradation, and they have been shown to remain biologically active in bioasssays with tobacco hornworm, Manduca sexta (Lepidoptera: Sphingidae), and the Colorado potato beetle, Leptinotarsa ”
• Persistence and biological activity in soil of the insecticidal proteins from Bacillus thuringiensis, especially from transgenic plants (2005, methodology): “No toxin was detected immunologically or by larvicidal assay in any soil in which plants of non-Bt corn or no plants had been grown (Saxena et al., 2002b).”
• Detection and decay of the Bt endotoxin in soil from a field trial with genetically modified maize (2003, background): “Recent work by Stotzky and co-workers (Tapp & Stotzky, 1998; Saxena et al., 1999, 2002; Saxena & Stotzky, 2000, 2001a) indicates that the -endotoxin from maize enters the soil from root exudates and post-harvest residues and that it can persist in the soil over the growing season and for several…”
• Ecological versus ecotoxicological methods for assessing the environmental risks of transgenic crops (2007, background): “For example, the presence of a herbicide-tolerance transgene in wild plants where no herbicide is applied [86], or of a insecticidal protein in soil at concentrations well below those known to have no effect on indicator species representative of those in soil [87], do not indicate potential harm to”
• Soil microbial biomass, functional diversity and enzyme activity in glyphosate-resistant wheat–canola rotations under low-disturbance direct seeding and conventional tillage (2007, background): “Transgenic crops can affect soil microorganisms due to differences in the amount and composition of root exudates (Saxena et al., 2002), gene transfer from the transgenic crop (de Vries and Wackernagel, 2004), and effects of management practices for transgenic crops, e.”
• Effects of transgenic plants on soil microorganisms (2005, background): “…studies have shown that Bt toxin as well as another common transgene protein, T4 lysozyme, are not only present in root exudates but that they maintain biological activity after entering the soil (Ahrenholtz et al., 2000; de Vries et al., 1999; Saxena and Stotzky, 2000; Saxena et al., 1999, 2002).”
• Bacterial communities associated with the rhizosphere of transgenic Bt 176 maize (Zea mays) and its non transgenic counterpart (2005, background): “The phenomenon has been demonstrated to be widespread in transgenic maize, and several transgenic lines have been shown to release Cry protein in root exudates (Saxena et al., 2002).”
• Influence of enhanced malate dehydrogenase expression by alfalfa on diversity of rhizobacteria and soil nutrient availability (2003, background): “The insecticidal toxin, encoded by the cry1Ab gene from B. thuringiensis in transgenic corn (Bt corn), was released into the rhizosphere (Saxena and Stotzky, 2000; Saxena et al., 1999; 2002).”
• A Comparison of Soil Microbial Community Structure, Protozoa and Nematodes in Field Plots of Conventional and Genetically Modified Maize Expressing the Bacillus thuringiens is CryIAb Toxin (2005, background): “…and Ream (1997) estimated that a potential maximum of 1.6 lg CryIIA protein g)1 soil would result from the residues of a crop of Bt cotton, while Saxena et al. (2002) observed that CryIAb toxin was released in root exudates from 12 Bt maize hybrids, accumulated in soil and remained insecticidal…”
• Genetic Transformation of Crops for Insect Resistance: Potential and Limitations (2004, background): “Root exudates from the transgenic maize release Bt toxins into the soil and retain insecticidal activity for 180 days ( Saxena et al. , 2002a, 2002b ).”