Development of target-site resistance (TSR) in Alopecurus myosuroides in Germany between 2004 and 2012
| Autor: | Maria Rosenhauer, Bernhard Jaser, Jan Petersen, Friedrich Felsenstein |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
0106 biological sciences
biology Resistance (ecology) fungi Alopecurus myosuroides Plant Science Horticulture Black grass biology.organism_classification 01 natural sciences Genetic analysis 010602 entomology Agronomy Target site Single site Botany Herbicide resistance Arable land Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Journal of Plant Diseases and Protection. 120:179-187 |
| ISSN: | 1861-3837 1861-3829 |
| Popis: | Alopecurus myosuroides is one of the most important grass weeds on arable land in Germany. For many years, it has developed herbicide-resistant populations. ACCase- and ALS-inhibiting herbicides, in particular, have lost significant efficacy. Two different mechanisms are commonly known to confer resistance to herbicides: target-site resistance (TSR) and non-target-site resistance (NTSR). In Germany, only approximately 5 to 10% of the herbicide-resistant black-grass populations have been reported to show TSR so far. To quantify the status and the distribution of TSR in Germany, 653 black-grass samples were collected between 2004 and 2012 all over the country. The samples were tested by bioassays and genetic analysis. Averaged over all tested samples, ACCase-TSR increased from 5.0% in 2004 to 54.3% in 2011. In 2012, the proportion of ACCase-TSR was lower than the previous years (38.5%). Similarly, ALS-TSR rose from 0.8% in 2007 to 13.9% in 2012. Regions with a high density of resistant black-grass samples were identified in the north and south of Germany. The data suggest a rapidly working selection of herbicide-resistant populations which may be due to current agricultural practices and the increasing use of herbicides acting on a single site. |
| Databáze: | OpenAIRE |
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