Faunistische Umweltrisikobewertung von Bt-Mais mit multiplen Resistenzgenen und Evaluierung von Trigonotylus caelestialium (Kirkaldy) und Lumbricus terrestris Linnaeus als Modellorganismen
type: CreativeWork
description: Modern agricultural plants not only shall warrant a high yield, but also shall have resistance against several pests. Genetically modified Bt plants expressing Cry proteins from Bacillus thuringiensis (BERLINER) defend themselves specifically against pests. The maize line DKC 5143-Bt MON 89034 x MON 88017 expresses the Cry1A.105 and Cry2Ab2 against the Ostrinia nubilalis and the Cry3Bb1 against the Diabrotica virgifera virgifera. As all GM plants the risk for the consumer and the environment of these plants has to be assessed. One aspect of those studies is to consider the effects of the new plants on non-target organisms occurring in or next to the field. Therefore the exposition to new plant ingredients and their hazard for the organisms have to be studied in a risk assessment. To get robust and comparable results, working with surrogate species seems to be the best way. In this project arthropods of the herb layer and earthworms were chosen due to their important role in the field to show advantages and disadvantages of different approaches. Part A of the project dealt with the effects of growing the stacked maize line in a field release experiment on the biocoenosis of the soil, the herb layer and the male flowers. To study those, the Bt line was compared during three consecutive growing seasons to its near isogenic line, two conventional lines and a soil insecticidal treatment against Diabrotica virgifera virgifera. All sampled organisms were determined to family or species level and the data statistically analyzed. The measured communities showed no effect of the GM maize line. An influence of the conventional varieties could be observed. The GM maize line matched with the near isogenic line. Trigonotylus caelestialium (KIRKALDY) could be identified as the most abundant plant bug in the field. Therefore it was chosen as a surrogate species in part B of the project. Additionally the earthworm Lumbricus terrestris LINNAEUS as an established model was chosen and …
abstract: Modern agricultural plants not only shall warrant a high yield, but also shall have resistance against several pests. Genetically modified Bt plants expressing Cry proteins from Bacillus thuringiensis (BERLINER) defend themselves specifically against pests. The maize line DKC 5143-Bt MON 89034 x MON 88017 expresses the Cry1A.105 and Cry2Ab2 against the Ostrinia nubilalis and the Cry3Bb1 against the Diabrotica virgifera virgifera. As all GM plants the risk for the consumer and the environment of these plants has to be assessed. One aspect of those studies is to consider the effects of the new plants on non-target organisms occurring in or next to the field. Therefore the exposition to new plant ingredients and their hazard for the organisms have to be studied in a risk assessment. To get robust and comparable results, working with surrogate species seems to be the best way. In this project arthropods of the herb layer and earthworms were chosen due to their important role in the field to show advantages and disadvantages of different approaches. Part A of the project dealt with the effects of growing the stacked maize line in a field release experiment on the biocoenosis of the soil, the herb layer and the male flowers. To study those, the Bt line was compared during three consecutive growing seasons to its near isogenic line, two conventional lines and a soil insecticidal treatment against Diabrotica virgifera virgifera. All sampled organisms were determined to family or species level and the data statistically analyzed. The measured communities showed no effect of the GM maize line. An influence of the conventional varieties could be observed. The GM maize line matched with the near isogenic line. Trigonotylus caelestialium (KIRKALDY) could be identified as the most abundant plant bug in the field. Therefore it was chosen as a surrogate species in part B of the project. Additionally the earthworm Lumbricus terrestris LINNAEUS as an established model was chosen and …
author: Schultheis, Eva
language: ger
keywords: info:eu-repo/classification/ddc/570, Bt-Mais, Mais, Biomonitoring, Pflanzenfressende Insekten, Regenwürmer <Familie>, Biowissenschaften, Biologie, T. caelestialium, L. terrestris, Modellorganismus, environmental risk assessment, Bt-maize, monitoring, model organisms, GMO
date published: 2011
date modified: 2026-07-30T19:43:10Z
provider: RWTH Aachen University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Publikationsserver der RWTH Aachen University