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| DOI: | 10.1614/WS-D-15-00203.1 |
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| Web URL(s): | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/E465D72B160BFCB8C48D6C8A662CBB40/S0043174500021901a.pdf/div-class-title-first-report-of-accase-restant-goosegrass-span-class-italic-eleusine-indica-span-in-the-united-states-div.pdf
Last checked: 03/24/2017
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | McCullough, Patrick E.;
Yu, Jialin;
Raymer, Paul L.;
Chen, Zhengbeng |
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| Author Affiliation: | McCullough: Associate Professor, Crop and Soil Sciences Department, University of Georgia, Griffin, GA; Yu: Postdoctoral Researcher, Crop and Soil Sciences Department, University of Georgia, Griffin, GA; Raymer: Professor, Crop and Soil Sciences Department, University of Georgia, Griffin, GA; Chen: Research Scientist, Crop and Soil Sciences Department, University of Georgia, Griffin, GA |
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| Title: | First report of ACCase-resistant goosegrass (Eleusine indica) in the United States |
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| Source: | Weed Science. Vol. 64, No. 3, September 2016, p. 399-408. |
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| Publishing Information: | Champaign, Illinois: Weed Science Society of America |
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| # of Pages: | 10 |
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| Related Web URL: | https://www.cambridge.org/core/journals/weed-science/article/div-classtitlefirst-report-of-accase-resistant-goosegrass-span-classitaliceleusine-indicaspan-in-the-united-statesdiv/E465D72B160BFCB8C48D6C8A662CBB40
Last checked: 03/15/2017
Notes: Abstract only |
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| Keywords: | TIC Keywords: Acetyl-CoA carboxylase inhibitors; Biotypes; Diclofop methyl; Eleusine indica; Evaluations; Herbicide efficacy; Herbicide resistance
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| Geographic Terms: | Georgia |
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| Abstract/Contents: | "A goosegrass biotype with suspected resistance to acetyl-CoA carboxylase (ACCase) inhibitors was identified in Georgia. The objectives of this research were to evaluate the resistance level of this biotype to ACCase inhibitors, efficacy of various herbicide mechanisms of action for control, and the physiological and molecular basis of resistance. In greenhouse experiments, the rate of diclofop-methyl that reduceAcetyl-CoA carboxylase inhibitorsd dry shoot biomass 50% (SR50) from the nontreated for the resistant (R) and susceptible (S) biotypes measured 4,100 and 221 g ai ha-1, respectively. The SR50 for sethoxydim measured 615 and 143 g ai ha-1 for the R and S biotype, respectively. The R biotype was cross resistant to clethodim, fenoxaprop, and fluazifop. The R and S biotypes were equally susceptible to foramsulfuron, glyphosate, monosodium methylarsenate (MSMA), and topramezone. In laboratory experiments, the two biotypes had similar foliar absorption of 14C-diclofop-methyl. Both biotypes metabolized 14C-diclofop-methyl to diclofop acid and a polar conjugate, but the R biotype averaged ~2 times greater metabolism than the S biotype. Gene sequencing revealed an Asp-2078-Gly substitution in the ACCase of the R biotype that has previously conferred resistance to ACCase inhibitors. A second mutation was identified in the R biotype that yielded a Thr-1805-Ser substitution that has been previously reported, but is not associated with ACCase resistance in other species. Thus, the Asp-2078-Gly substitution is the basis for resistance to ACCase inhibitors for the R biotype. This is the first report of ACCase-inhibitor resistance in goosegrass from the United States and from a turfgrass system." |
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| Language: | English |
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| References: | 55 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McCullough, P. E., J. Yu, P. L. Raymer, and Z. Chen. 2016. First report of ACCase-resistant goosegrass (Eleusine indica) in the United States. Weed Sci. 64(3):p. 399-408. |
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| DOI: 10.1614/WS-D-15-00203.1 |
| Web URL(s):
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/E465D72B160BFCB8C48D6C8A662CBB40/S0043174500021901a.pdf/div-class-title-first-report-of-accase-restant-goosegrass-span-class-italic-eleusine-indica-span-in-the-united-states-div.pdf
Last checked: 03/24/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2203399a |
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