Infestation of transgenic powdery mildew-resistant wheat by naturally occurring insect herbivores under different environmental conditions
| Autor: | Jörg Romeis, Simone von Burg, Fernando Álvarez-Alfageme |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
0106 biological sciences
Agricultural Biotechnology lcsh:Medicine Plant Science Genetically modified crops medicine.disease_cause 01 natural sciences lcsh:Science Triticum 2. Zero hunger Plant Pests 0303 health sciences Aphid Multidisciplinary Mildew Ecology biology Genetically Modified Organisms Chitinases food and beverages Agriculture Spores Fungal Triticale Plants Genetically Modified Coleoptera Wheat Agrochemicals Powdery mildew Research Article Biotechnology Cereals Crops Environment 03 medical and health sciences Integrated Control Ascomycota Infestation medicine Animals Herbivory Biology Plant Diseases 030304 developmental biology Wheats Herbicides Chlorops pumilionis lcsh:R Crop Diseases Hordeum Plant Pathology biology.organism_classification Crop Management Spore Agronomy Plant Biotechnology lcsh:Q Pest Control Agroecology 010606 plant biology & botany |
| Zdroj: | PLoS ONE, Vol 6, Iss 7, p e22690 (2011) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | A concern associated with the growing of genetically modified (GM) crops is that they could adversely affect non-target organisms. We assessed the impact of several transgenic powdery mildew-resistant spring wheat lines on insect herbivores. The GM lines carried either the Pm3b gene from hexaploid wheat, which confers race-specific resistance to powdery mildew, or the less specific anti-fungal barley seed chitinase and β-1,3-glucanase. In addition to the non-transformed control lines, several conventional spring wheat varieties and barley and triticale were included for comparison. During two consecutive growing seasons, powdery mildew infection and the abundance of and damage by naturally occurring herbivores were estimated under semi-field conditions in a convertible glasshouse and in the field. Mildew was reduced on the Pm3b-transgenic lines but not on the chitinase/glucanase-expressing lines. Abundance of aphids was negatively correlated with powdery mildew in the convertible glasshouse, with Pm3b wheat plants hosting significantly more aphids than their mildew-susceptible controls. In contrast, aphid densities did not differ between GM plants and their non-transformed controls in the field, probably because of low mildew and aphid pressure at this location. Likewise, the GM wheat lines did not affect the abundance of or damage by the herbivores Oulema melanopus (L.) and Chlorops pumilionis Bjerk. Although a previous study has revealed that some of the GM wheat lines show pleiotropic effects under field conditions, their effect on herbivorous insects appears to be low. |
| Databáze: | OpenAIRE |
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