| |
| Web URL(s): | http://www.bioone.org/doi/pdf/10.1614/WS-04-200R.1
Last checked: 03/15/2010
Requires: PDF Reader
Access conditions: Item is within a limited access website
http://www.bioone.org/bioone/?request=get-document&issn=0043-1745&volume=053&issue=06&page=0775
Last checked: 01/31/2006
Access conditions: Item is within limited access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Perez-Jones, Alejandro;
Park, Kee Woong;
Colquhoun, Jed;
Mallory-Smith, Carol;
Shaner, Dale |
|---|
| Author Affiliation: | Perez-Jones: Corresponding author, Department of Crop and Soil Science, Oregon State University, Corvallis, Oregon; Park, Colquhoun, and Mallory-Smith: Department of Crop and Soil Science, Oregon State University, Corvallis, Oregon; Shaner: USDA-ARS Water Management Unit, Fort Collins, Colorado |
|---|
| Title: | Identification of glyphosate-resistant Italian ryegrass (Lolium multiflorum) in Oregon |
|---|
| Column Name: | Physiology, chemistry, and biochemistry
Other records with the "Physiology, chemistry, and biochemistry" Column
|
|---|
| Source: | Weed Science. Vol. 53, No. 6, November/December 2005, p. 775-779. |
|---|
| Publishing Information: | Champaign, IL: Weed Science Society of America |
|---|
| # of Pages: | 5 |
|---|
| Keywords: | TIC Keywords: Susceptibility; Glyphosate; Herbicide resistance; Lolium multiflorum; Identification; Biotypes; Shikimic acid; Application rates; Herbicide concentrations; Tissue testing
|
|---|
| Geographic Terms: | Oregon |
|---|
| Abstract/Contents: | "A suspected glyphosate-resistant Italian ryegrass biotype was collected from a filbert orchard near Portland, OR, where glyphosate was applied multiple times per year for about 15 yr. Greenhouse studies were conducted to determine if this biotype was glyphosate resistant. The plants were sprayed with glyphosate (0.01 to 3.37 kg ae ha-1) 14 d after planting and shoot biomass was determined 3 wk after herbicide treatment. Based on the dose-response experiments conducted in the greenhouse, the suspected Italian ryegrass biotype was approximately fivefold more resistant to glyphosate than the susceptible biotype. Plants from both susceptible and resistant biotypes were treated with glyphosate (0.42 and 0.84 kg ha-1 and shikimic acid was extracted 12, 24, 48, and 96 h after treatment. The susceptible biotype accumulated between three and five times more shikimic acid than did the resisitant biotype. Leaf segments from both susceptible and resistant biotypes were incubated with different glyphosate concentrations (0.5 to 3000 μM) for 14 h under continuous light. Shikimic acid was extracted from each leaf segment and quantified. At a concentration up to 100 μM, leaf segments from the susceptible biotype accumulated more shikimic acid than leaf segments from the resistant biotype. the epsps gene was amplified and sequenced in both susceptible and resistant biotypes; however, no amino acid change was found in the resistant biotype. the level of resistance in this biotype is similar to that reported for a glyphosate-resistant Italian ryegrass biotype from Chile." |
|---|
| Language: | English |
|---|
| References: | 37 |
|---|
| Note: | Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Perez-Jones, A., K. -W. Park, J. Colquhoun, C. Mallory-Smith, and D. Shaner. 2005. Identification of glyphosate-resistant Italian ryegrass (Lolium multiflorum) in Oregon. Weed Sci. 53(6):p. 775-779. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=108981 |
| If there are problems with this record, send us feedback about record 108981. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.bioone.org/doi/pdf/10.1614/WS-04-200R.1
Last checked: 03/15/2010
Requires: PDF Reader
Access conditions: Item is within a limited access website
http://www.bioone.org/bioone/?request=get-document&issn=0043-1745&volume=053&issue=06&page=0775
Last checked: 01/31/2006
Access conditions: Item is within limited access website |
| 
MSU catalog number: SB 610 .W38 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
