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| Web URL(s): | https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/143461 Last checked: 01/24/2023 Requires: JavaScript |
| Publication Type: | Report |
| Content Type: | Abstract or Summary only |
| Author(s): | Deaton, Brody; Raymer, Paul; Chen, Zhenbang; Xue, Jihong |
| Author Affiliation: | Deaton: Presenting Author and University of Georgia Experiment Station; Raymer: University of Georgia - Griffin; Chen and Xue: University of Georgia |
| Title: | Obtaining dinitroaniline resistance in tall fescue (Schedonorus arundinaceus) |
| Section: | Turfgrass science oral I (includes student competition) Other records with the "Turfgrass science oral I (includes student competition)" Section C05 turfgrass science Other records with the "C05 turfgrass science" Section |
| Meeting Info.: | Baltimore, Maryland: November 6-9, 2022 |
| Source: | ASA, CSSA, SSSA International Annual Meeting. 2022, p. 143461. |
| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America] |
| # of Pages: | 1 |
| Abstract/Contents: | "Dinitroanilines have been used globally for decades as pre-emergence herbicides for weed control. A consequence of this prolonged use has been the development of resistance to these herbicides in twelve different weed species. The reported cases of resistance credit mutations within the alpha-tubulin protein that confer resistance to dinitroaniline herbicides. The reported mutations are Leu-125-Met, Leu-136-Phe, Val-202-Phe, Thr-239-Ile, Met-268-Thr, Arg-243-Met/Lys. There are no reported cases of dinitroaniline resistance within turfgrass species. The goal of this research is to obtain and utilize mutations conferring resistance to dinitroaniline herbicides to improve weed control options in tall fescue (Schedonorus arundinaceus). Tissue culture was used to select for mutations conferring dinitroaniline resistance. Experiments to determine callus response to pendimethalin dosage indicated 3 µmoles pendimethalin should be effective to select for tolerant tissue. Tall fescue calli were grown on modified MS/B5D2 media containing 3 µmoles pendimethalin for 2 or 3 one-month-cycles. Calli demonstrating significant growth were selected for regeneration and 141 putative resistant plants were successfully established under greenhouse conditions. A hydroponic protocol was used to confirm pendimethalin-resistant phenotypes. The parent line (control) and possible resistant genotypes were separated into tillers, roots trimmed to 1 cm, and suspended in 5.4 L tubs containing one-half strength Hoagland solution with pendimethalin at rates of 0, 1, 2, 4, and 8 µmoles. After one month the tillers were harvested and root weight, root length, and visual rating of roots were recorded. Results indicated that 2 µmoles of pendimethalin in the hydroponic solution should be effective in identifying plants with high levels of resistance to pendimethalin. Although screening of putative resistant plants is still underway, plants expressing high levels of resistance to pendimethalin have been identified." |
| Language: | English |
| References: | 0 |
| Note: | "215-10" This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-like – may be incomplete): | Deaton, B., P. Raymer, Z. Chen, and J. Xue. 2022. Obtaining dinitroaniline resistance in tall fescue (Schedonorus arundinaceus). Agron. Abr. p. 143461. |
| Fastlink to access this record outside TGIF: | http://tic.msu.edu/tgif/flink/RECNO/324917 |
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| Web URL(s) : | https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/143461 Last checked: 01/24/2023 Requires: JavaScript |
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