Brunharo, Caio ACG Patterson, Eric L Carrijo, Daniela R de Melo, Marcel SC Nicolai, Marcelo Gaines, Todd A Nissen, Scott J and Christoffoleti, Pedro J 2016. Confirmation and mechanism of glyphosate resistance in tall windmill grass (Chloris elata) from Brazil. Pest Management Science, Vol. 72, Issue. 9, p. 1758.
Hess, Martin Herrmann, Johannes Krähmer, Hansjörg and Beffa, Roland 2016. Atlas of Weed Mapping.
Janel, L Huffman Riggins, Chance W Steckel, Lawrence E and Tranel, Patrick J 2016. The EPSPS Pro106Ser substitution solely accounts for glyphosate resistance in a goosegrass (Eleusine indica) population from Tennessee, United States. Journal of Integrative Agriculture, Vol. 15, Issue. 6, p. 1304.
Mao, Chanjuan Xie, Hongjie Chen, Shiguo Valverde, Bernal E. and Qiang, Sheng 2016. Multiple mechanism confers natural tolerance of three lilyturf species to glyphosate. Planta, Vol. 243, Issue. 2, p. 321.
Chen, Jingchao Huang, Hongjuan Zhang, Chaoxian Wei, Shouhui Huang, Zhaofeng Chen, Jinyi and Wang, Xu 2015. Mutations and amplification of EPSPS gene confer resistance to glyphosate in goosegrass (Eleusine indica). Planta, Vol. 242, Issue. 4, p. 859.
Cross, Robert B. McCarty, Lambert B. Tharayil, Nishanth McElroy, J. Scott Chen, Shu McCullough, Patrick E. Powell, Brian A. and Bridges, William C. 2015. A Pro106 to Ala Substitution is Associated with Resistance to Glyphosate in Annual Bluegrass (Poa annua). Weed Science, Vol. 63, Issue. 03, p. 613.
Fernandez, Jose V. Odero, Dennis C. MacDonald, Gregory E. Ferrell, Jason and Gettys, Lyn A. 2015. Confirmation, Characterization, and Management of Glyphosate-Resistant Ragweed Parthenium (Parthenium hysterophorus L.) in the Everglades Agricultural Area of South Florida. Weed Technology, Vol. 29, Issue. 02, p. 233.
Salas, Reiofeli A. Scott, Robert C. Dayan, Franck E. and Burgos, Nilda R. 2015. EPSPSGene Amplification in Glyphosate-Resistant Italian Ryegrass (Lolium perennessp.multiflorum) Populations from Arkansas (United States). Journal of Agricultural and Food Chemistry, Vol. 63, Issue. 25, p. 5885.
Barroso, Arthur A. M. Albrecht, Alfredo J. P. Reis, Fabricia C. Dos Placido, Henrique F. Toledo, Roberto E. Albrecht, Leandro P. and Filho, Ricardo V. 2014. Different Glyphosate Susceptibility in Chloris polydactyla Accessions. Weed Technology, Vol. 28, Issue. 04, p. 587.
Dombrowski, James E and Martin, Ruth C 2014. Green leaf volatiles, fire and nonanoic acid activate MAPkinases in the model grass species Lolium temulentum. BMC Research Notes, Vol. 7, Issue. 1, p. 807.
Hanson, Bradley D. Wright, Steven Sosnoskie, Lynn M. Fischer, Albert J. Jasieniuk, Marie Roncoroni, John A. Hembree, Kurt J. Orloff, Steve Shrestha, Anil and Al-Khatib, Kassim 2014. Herbicide-resistant weeds challenge some signature cropping systems. California Agriculture, Vol. 68, Issue. 4, p. 142.
Liu, Mingyang Hulting, Andrew G and Mallory-Smith, Carol A 2014. Characterization of multiple-herbicide-resistant Italian ryegrass (Lolium perennespp.multiflorum). Pest Management Science, Vol. 70, Issue. 7, p. 1145.
Sammons, Robert Douglas and Gaines, Todd A 2014. Glyphosate resistance: state of knowledge. Pest Management Science, Vol. 70, Issue. 9, p. 1367.
Sharkhuu, Altanbadralt Narasimhan, Meena L. Merzaban, Jasmeen S. Bressan, Ray A. Weller, Steve and Gehring, Chris 2014. A red and far-red light receptor mutation confers resistance to the herbicide glyphosate. The Plant Journal, Vol. 78, Issue. 6, p. 916.
Shrestha, Anil Steinhauer, Katrina M. Moretti, Marcelo L. Hanson, Bradley D. Jasieniuk, Marie Hembree, Kurt J. and Wright, Steven D. 2014. Distribution of glyphosate-resistant and glyphosate-susceptible hairy fleabane (Conyza bonariensis) in central California and their phenological development. Journal of Pest Science, Vol. 87, Issue. 1, p. 201.
Alarcón-Reverte, Rocío García, Alejandro Urzúa, Jaime and Fischer, Albert J. 2013. Resistance to Glyphosate in Junglerice (Echinochloa colona) from California. Weed Science, Vol. 61, Issue. 01, p. 48.
Bell, Michael S. Hager, Aaron G. and Tranel, Patrick J. 2013. Multiple Resistance to Herbicides from Four Site-of-Action Groups in Waterhemp (Amaranthus tuberculatus). Weed Science, Vol. 61, Issue. 03, p. 460.
Cheng, Xia and Ni, Hanwen 2013. Weed control efficacy and winter wheat safety of a novel herbicide HW02. Crop Protection, Vol. 43, p. 246.
Firestone, Jeffrey L. and Jasieniuk, Marie 2013. Small population size limits reproduction in an invasive grass through both demography and genetics. Oecologia, Vol. 172, Issue. 1, p. 109.
Nandula, Vijay K. Ray, Jeffery D. Ribeiro, Daniela N. Pan, Z. and Reddy, Krishna N. 2013. Glyphosate Resistance in Tall Waterhemp (Amaranthus tuberculatus) from Mississippi is due to both Altered Target-Site and Nontarget-Site Mechanisms. Weed Science, Vol. 61, Issue. 03, p. 374.
Selection by herbicides has resulted in widespread evolution of herbicide resistance in agricultural weeds. In California, resistance to glyphosate was first confirmed in rigid ryegrass in 1998. Objectives of this study were to determine the current distribution and level of glyphosate resistance in Italian ryegrass, and to assess whether resistance could be due to an altered target site. Seeds were sampled from 118 populations and seedlings were treated with glyphosate at 866 g ae ha−1. Percentage of survivors ranged from 5 to 95% in 54 populations. All plants from 64 populations died. One susceptible (S) population, four putatively resistant (R) populations, and one S accession from Oregon were used for pot dose–response experiments, shikimic acid analyses, and DNA sequencing. Seedlings were treated with glyphosate at eight rates, ranging from 108 to 13,856 g ae ha−1. Shoot biomass was evaluated 3 wk after treatment and fit to a log-logistic regression equation. On the basis of GR50 (herbicide rate required to reduce growth by 50%) values, seedlings from putatively R populations were roughly two to 15 times more resistant to glyphosate than S plants. Shikimic acid accumulation was similar in all plants before glyphosate treatment, but at 4 and 7 DAT, S plants from California and Oregon accumulated approximately two and three times more shikimic acid, respectively, than R plants. Sequencing of a cDNA fragment of the EPSPS coding region revealed two different codons, both of which encode proline at amino acid position 106 in S individuals. In contrast, all R plants sequenced exhibited missense mutations at site 106. Plants from one population revealed a mutation resulting in a proline to serine substitution. Plants from three R populations exhibited a mutation corresponding to replacement of proline with alanine. Our results indicate that glyphosate resistance is widespread in Italian ryegrass populations of California, and that resistance is likely due to an altered target enzyme.
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