Description: Das Projekt "Transgenic wheat and non-target impacts on insect herbivores and food webs" wird vom Umweltbundesamt gefördert und von Forschungsanstalt Agroscope Reckenholz-Tänikon ART durchgeführt. Genetically engineered (transgenic) crop varieties are grown on a steadily increasing area, covering an estimated 114 million ha in 2007. More than 42 million ha were planted with insect-resistant cotton and maize varieties that express cry genes derived from the soil bacterium Bacillus thuringiensis (Bt). A major concern with the widespread use of insecticidal transgenic crops is their potential impact on non-target organisms. This includes effects on herbivores that are not affected by the expressed toxins and could develop into secondary pests as well as predators and parasitoids that play an important role in natural pest regulation. To date, studies have primarily addressed direct effects of insecticidal proteins on non-target organisms. Here we address an important novel indirect interaction between insect-resistant transgenic plants and non-target organisms. We study the interactions between the plant's inherent defence mechanisms with the introduced trait and how this affects herbivores and their natural enemies. The studies will include detailed investigations on insect-plant interactions under protected conditions. Complementary field studies in the USA will investigate whether effects observed in the laboratory/glasshouse are of ecological relevance, i.e. also expressed under field conditions. The proposed studies address basic questions on plant-insect interactions. The results obtained within this project will thus be of fundamental scientific interest and of importance for ecological risk assessments related to the use of insect-resistant transgenic crops.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Gen ? Weizen ? Insekt ? Biopharmazeutikum ? Mais ? Bacillus thuringiensis ? Bodenbakterien ? Ökologie ? Brunnen ? USA ? Datierung ? Baumwolle ? Pflanzenbestand ? Regulierung ? Toxin ? Wirkung ? Prädator ? Ackerland ? Bewertung ? Feldstudie ? Gentechnisch veränderte Organismen ? Protein ? Studie ? Schadorganismus ? Nichtzielarten ? Wirkung ? Risikobewertung ? Abdeckung ? Forschungseinrichtung ? Lebensmittel ? Nahrungskette ? Organismen ? Risiko ? Umwelt ? Gebiet ? ERGEBNIS ? TRANSGEN ? Zins ? TROPHISCH ? UNTER ? UNTERSUCHUNG ? VERHAELTNIS ? EINSATZ ? Bepflanzung ? VERTEIDIGUNG ? KONTROLLE ? VERWANDT ? MECHANISMEN ? Betriebsvorschrift ? NEU ? Vermehrung ? WICHTIG ? Netz ? FRAGE ? WISSENSCHAFTLICH ? POTENZIAL ? PROJEKT ? GRUNDLAGE ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2007-07-01 - 2011-06-30
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