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| DOI: | 10.2135/cropsci2015.01.0035 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/55/5/2352
Last checked: 09/17/2015
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| Publication Type:
| Refereed |
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| Author(s): | McCullough, Patrick E.;
Yu, Jialin;
Shilling, Donn G.;
Czarnota, Mark A. |
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| Author Affiliation: | Dep. of Crop and Soil Sciences, Univ. of Georgia, Griffin, GA |
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| Title: | Physiological basis for glyphosate tolerance in hard fescue and perennial ryegrass cultivars |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 55, No. 5, September/October 2015, p. 2352-2358. |
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| Publishing Information: | Madison, Wisconsin: Crop Science Society of America |
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| # of Pages: | 7 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/55/5/2352
Last checked: 09/17/2015
Notes: Abstract only
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| Keywords: | TIC Keywords: Cultivar evaluation; Festuca ovina subsp. duriuscula; Glyphosate; Herbicide evaluation; Herbicide resistance; Lolium perenne
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| Cultivar Names: | Manhattan V; Aurora Gold; JS501; Stonehenge |
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| Abstract/Contents: | "Glyphosate effectively controls susceptible biotypes of numerous weed species, but applications are often injurious to turfgrass. 'Aurora Gold' hard fescue (Festuca longifolia Thuill.) and 'JS-501' perennial ryegrass (Lolium perenne L.) have enhanced tolerance to glyphosate compared with traditional varieties, but the mechanisms that convey tolerance are not well understood. The objectives of this research were to investigate the physiological basis for glyphosate tolerance in Aurora Gold hard fescue and JS-501 perennial ryegrass. In greenhouse experiments, the estimated glyphosate rate required to reduce dry shoot mass 50% from the nontreated shoots at 4 wk after treatment measured >3360, >3360, 1850, and 1310 g acid equivalent (a.e.) ha-1 for Aurora Gold, JS-501, 'Manhattan V' perennial ryegrass, and 'Stonehenge' hard fescue, respectively. Absorption of 14C-glyphosate was similar between hard fescue cultivars and averaged 5% of the applied radioactivity. However, Aurora Gold accumulated 20% less shikimate than Stonehenge when incubated at ā„250 Ī¼M of glyphosate in leaf disk assays. JS-501 perennial ryegrass absorbed less 14C-glyphosate than Manhattan V (13 vs. 22% of the applied) and accumulated ~50% less shikimate. All cultivars translocated the majority of absorbed radioactivity out of the treated leaf. Based on these findings, glyphosate has less target-site inhibition in Aurora Gold compared with a more susceptible hard fescue cultivar. The glyphosate tolerance of JS-501 perennial ryegrass involves two mechanisms including less absorption and target-site inhibition from a more susceptible cultivar." |
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| Language: | English |
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| References: | 25 |
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| Note: | Equations
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McCullough, P. E., J. Yu, D. G. Shilling, and M. A. Czarnota. 2015. Physiological basis for glyphosate tolerance in hard fescue and perennial ryegrass cultivars. Crop Sci. 55(5):p. 2352-2358. |
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| DOI: 10.2135/cropsci2015.01.0035 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/55/5/2352
Last checked: 09/17/2015
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pdfs/55/5/2352
Last checked: 09/17/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2211522a |
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