Taxonomic and life history bias in herbicide resistant weeds: implications for deployment of resistant crops.
Evolved herbicide resistance (EHR) is an important agronomic problem and consequently a food security problem, as it jeopardizes herbicide effectiveness and increases the difficulty and cost of weed management. EHR in weeds was first reported in 1970 and the number of cases has accelerated dramatica...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3767681?pdf=render |
| _version_ | 1818925108489617408 |
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| author | Jodie S Holt Shana R Welles Katia Silvera Ian M Heap Sylvia M Heredia Alejandra Martinez-Berdeja Kai T Palenscar Lynn C Sweet Norman C Ellstrand |
| author_facet | Jodie S Holt Shana R Welles Katia Silvera Ian M Heap Sylvia M Heredia Alejandra Martinez-Berdeja Kai T Palenscar Lynn C Sweet Norman C Ellstrand |
| author_sort | Jodie S Holt |
| collection | DOAJ |
| description | Evolved herbicide resistance (EHR) is an important agronomic problem and consequently a food security problem, as it jeopardizes herbicide effectiveness and increases the difficulty and cost of weed management. EHR in weeds was first reported in 1970 and the number of cases has accelerated dramatically over the last two decades. Despite 40 years of research on EHR, why some weeds evolve resistance and others do not is poorly understood. Here we ask whether weed species that have EHR are different from weeds in general. Comparing taxonomic and life history traits of weeds with EHR to a control group ("the world's worst weeds"), we found weeds with EHR significantly over-represented in certain plant families and having certain life history biases. In particular, resistance is overrepresented in Amaranthaceae, Brassicaceae and Poaceae relative to all weeds, and annuality is ca. 1.5 times as frequent in weeds with EHR as in the control group. Also, for perennial EHR weeds, vegetative reproduction is only 60% as frequent as in the control group. We found the same trends for subsets of weeds with EHR to acetolactate synthase (ALS), photosystem II (PSII), and 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase-inhibitor herbicides and with multiple resistance. As herbicide resistant crops (transgenic or not) are increasingly deployed in developing countries, the problems of EHR could increase in those countries as it has in the USA if the selecting herbicides are heavily applied and appropriate management strategies are not employed. Given our analysis, we make some predictions about additional species that might evolve resistance. |
| first_indexed | 2024-12-20T02:35:59Z |
| format | Article |
| id | doaj.art-26e08ba7e1714ff0b368685e9fc1238f |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-20T02:35:59Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-26e08ba7e1714ff0b368685e9fc1238f2022-12-21T19:56:27ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0189e7191610.1371/journal.pone.0071916Taxonomic and life history bias in herbicide resistant weeds: implications for deployment of resistant crops.Jodie S HoltShana R WellesKatia SilveraIan M HeapSylvia M HerediaAlejandra Martinez-BerdejaKai T PalenscarLynn C SweetNorman C EllstrandEvolved herbicide resistance (EHR) is an important agronomic problem and consequently a food security problem, as it jeopardizes herbicide effectiveness and increases the difficulty and cost of weed management. EHR in weeds was first reported in 1970 and the number of cases has accelerated dramatically over the last two decades. Despite 40 years of research on EHR, why some weeds evolve resistance and others do not is poorly understood. Here we ask whether weed species that have EHR are different from weeds in general. Comparing taxonomic and life history traits of weeds with EHR to a control group ("the world's worst weeds"), we found weeds with EHR significantly over-represented in certain plant families and having certain life history biases. In particular, resistance is overrepresented in Amaranthaceae, Brassicaceae and Poaceae relative to all weeds, and annuality is ca. 1.5 times as frequent in weeds with EHR as in the control group. Also, for perennial EHR weeds, vegetative reproduction is only 60% as frequent as in the control group. We found the same trends for subsets of weeds with EHR to acetolactate synthase (ALS), photosystem II (PSII), and 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase-inhibitor herbicides and with multiple resistance. As herbicide resistant crops (transgenic or not) are increasingly deployed in developing countries, the problems of EHR could increase in those countries as it has in the USA if the selecting herbicides are heavily applied and appropriate management strategies are not employed. Given our analysis, we make some predictions about additional species that might evolve resistance.http://europepmc.org/articles/PMC3767681?pdf=render |
| spellingShingle | Jodie S Holt Shana R Welles Katia Silvera Ian M Heap Sylvia M Heredia Alejandra Martinez-Berdeja Kai T Palenscar Lynn C Sweet Norman C Ellstrand Taxonomic and life history bias in herbicide resistant weeds: implications for deployment of resistant crops. PLoS ONE |
| title | Taxonomic and life history bias in herbicide resistant weeds: implications for deployment of resistant crops. |
| title_full | Taxonomic and life history bias in herbicide resistant weeds: implications for deployment of resistant crops. |
| title_fullStr | Taxonomic and life history bias in herbicide resistant weeds: implications for deployment of resistant crops. |
| title_full_unstemmed | Taxonomic and life history bias in herbicide resistant weeds: implications for deployment of resistant crops. |
| title_short | Taxonomic and life history bias in herbicide resistant weeds: implications for deployment of resistant crops. |
| title_sort | taxonomic and life history bias in herbicide resistant weeds implications for deployment of resistant crops |
| url | http://europepmc.org/articles/PMC3767681?pdf=render |
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