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| DOI: | 10.1002/ps.3342 |
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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1002/ps.3342/full
Last checked: 10/03/2012
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1002/ps.3342/pdf
Last checked: 10/03/2012
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Salas, Reiofeli A.;
Dayan, Franck E.;
Pan, Zhiqiang;
Watson, Susan B.;
Dickson, James W.;
Scott, Robert C.;
Burgos, Nilda R. |
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| Author Affiliation: | Salas and Burgos: Department of Crop, Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR; Dayan, Pan, and Watson: USDA-ARS, Thad Cochran Research Center, University, MS; Dickson and Scott: University of Arkansas Extension, Lonoke, AR |
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| Title: | EPSPS gene amplification in glyphosate-resistant Italian ryegrass (Lolium perenne ssp. multiflorum) from Arkansas |
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| Section: | Rapid report
Other records with the "Rapid report" Section
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| Source: | Pest Management Science. Vol. 68, No. 9, September 2012, p. 1223-1230. |
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| Publishing Information: | Barking, Essex, United Kingdom: Elsevier Science Publishers Ltd. |
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| # of Pages: | 8 |
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| Related Web URL: | http://onlinelibrary.wiley.com/doi/10.1002/ps.3342/abstract
Last checked: 10/03/2012
Notes: Abstract only |
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| Keywords: | TIC Keywords: Application rates; DNA amplification; Enzyme activity; Glyphosate; Herbicide resistance; Lolium multiflorum; Weed control
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| Abstract/Contents: | "BACKGROUND: Resistance to glyphosate in weed species is a major challenge for the sustainability of glyphosate use in crop and non-crop systems. A glyphosate-resistant Italian ryegrass population has been identified in Arkansas. This research was conducted to elucidate its resistance mechanism. RESULTS: The investigation was conducted on resistant and susceptible plants from a population in Desha County, Arkansas (Des03). The amounts of glyphosate that caused 50% overall visual injury were 7 to 13 times greater than those for susceptible plants from the same population. The EPSPS gene did not contain any point mutation that has previously been associated with resistance to glyphosate, nor were there any other mutations on the EPSPS gene unique to the Des03 resistant plants. The resistant plants had 6-fold higher basal EPSPS enzyme activities than the susceptible plants, but their I50 values in response to glyphosate were similar. The resistant plants contained up to 25 more copies of EPSPS gene than the susceptible plants. The level of resistance to glyphosate correlated with increases in EPSPS enzyme activity and EPSPS copy number. CONCLUSION: Increased EPSPS gene amplification and EPSPS enzyme activity confer resistance to glyphosate in the Des03 population. This is the first report of EPSPS gene amplification in glyphosate-resistant Italian ryegrass. Other resistance mechanism(s) may also be involved." |
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| Language: | English |
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| References: | 57 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Salas, R. A., F. E. Dayan, Z. Pan, S. B. Watson, J. W. Dickson, R. C. Scott, et al. 2012. EPSPS gene amplification in glyphosate-resistant Italian ryegrass (Lolium perenne ssp. multiflorum) from Arkansas. Pest Management Science. 68(9):p. 1223-1230. |
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| DOI: 10.1002/ps.3342 |
| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1002/ps.3342/full
Last checked: 10/03/2012
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1002/ps.3342/pdf
Last checked: 10/03/2012
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2219665 |
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