College of Agricultural Sciences Personnel Profile
Personnel Photo of Todd A Gaines
Todd A Gaines
Assistant Professor
Bioagricultural Sciences and Pest Management
College of Agricultural Sciences

  • Ph D, Colorado State University; Bioagricultural Sciences
  • MS, Colorado State University; Plant Breeding and Genetics
  • BS, Colorado State University; Soil and Crop Sciences
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Patterson, Eric, Fleming, Margaret Brigham, Kessler, Kallie Christine, Nissen, Scott J, Gaines, Todd, (2017) A KASP genotyping method to identify northern watermilfoil, Eurasian watermilfoil, and their interspecific hybrids Frontiers in Plant Science 8 752

Oliveira, M., Jhala, Amit J, Gaines, Todd, Irmak, S., Amundsen, K., Knezevic, S. Z., (2017) Confirmation and control of 4-hydroxyphenylpyruvate dioxygenase inhibitor-resistant common waterhemp (Amaranthus rudis) in Nebraska Weed Technology 31 67-79

Chahal, Parminder S, Irmak, S., Gaines, Todd, Amundsen, K., Jugulam, Mithila, Jha, Prashant, Travlos, I., Jhala, A. J., (2017) Control of photosystem (PS) II- and 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibitor-resistant Palmer amaranth (Amaranthus palmeri S. Wats.) in conventional corn Weed Technology In press

Vieira, Bruno C, Samuelson, Spencer L, Alves, Guilherme S, Gaines, Todd, Werle, Rodrigo, Kruger, Greg R, (2017) Distribution of glyphosate‐resistant Amaranthus spp. in Nebraska Pest management science

Fernández-Escalada, Manuel, Zulet-González, Ainhoa, Gil-Monreal, Miriam, Zabalza, Ana, Ravet, Karl, Gaines, Todd, Royuela, Mercedes, (2017) Effects of EPSPS copy number variation (CNV) and glyphosate application on the aromatic and branched chain amino acid synthesis pathways in Amaranthus palmeri Frontiers in Plant Science 8 1970

Patterson, Eric, Pettinga, Dean Jacob, Ravet, Karl, Neve, Paul, Gaines, Todd, (2017) Glyphosate resistance and EPSPS gene duplication: Convergent evolution in multiple plant species Journal of Heredity

Van Horn, Christopher R, Moretti, Marcelo L, Robertson, Renae R, Segobye, Kabelo, Weller, Stephen C, Young, Bryan G, Johnson, William G, Schulz, Burkhard, Green, Amanda C, Jeffery, Taylor, Lesperance, M., Tardif, F., Sikkema, P., Hall, J Christopher, McLean, M., Lawton, M., Sammons, R. Douglas, Gaines, Todd, (2017) Glyphosate resistance in Ambrosia trifida: Part 1. Novel rapid cell death response to glyphosate Pest Management Science

Moretti, Marcelo L, Van Horn, Christopher R, Robertson, Renae, Segobye, Kabelo, Weller, Stephen C, Young, Bryan G, Johnson, William G, Douglas Sammons, R, Wang, Dafu, Ge, Xia, d’Avignon, D. A., Gaines, Todd, Westra, Philip, Green, A., Jeffery, T., Lesperance, M., Tardif, F., Sikkema, P., Hall, J Christopher, McLean, M., Lawton, M., Schulz, Burkhard, (2017) Glyphosate resistance in Ambrosia trifida: Part 2. Rapid response physiology and non‐target‐site resistance Pest Management Science

Pettinga, Dean Jacob, Ou, Junjun, Patterson, Eric, Jugulam, Mithila, Westra, Philip, Gaines, Todd, (2017) Increased Chalcone Synthase (CHS) expression is associated with dicamba resistance in Kochia scoparia Pest management science

Figueiredo, Marcelo RA, Leibhart, Lacy J, Reicher, Zachary J, Tranel, Patrick J, Nissen, Scott J, Westra, Philip, Bernards, Mark L, Kruger, Greg R, Gaines, Todd, Jugulam, Mithila, (2017) Metabolism of 2, 4‐dichlorophenoxyacetic acid contributes to resistance in a common waterhemp (Amaranthus tuberculatus) population Pest management science

Kuepper, Anita, Borgato, Ednaldo A, Patterson, Eric, Netto, Acácio Gonçalves, Nicolai, Marcelo, Carvalho, Saul JP de, Nissen, Scott J, Gaines, Todd, Christoffoleti, Pedro J, (2017) Multiple resistance to glyphosate and acetolactate synthase inhibitors in Palmer amaranth (Amaranthus palmeri) identified in Brazil Weed Science 65 3 317-326

Giacomini, Darci A, Gaines, Todd, Beffa, Roland, Tranel, Patrick J, (2017) Optimizing RNA‐seq studies to investigate herbicide resistance Pest management science

Busi, Roberto, Gaines, Todd, Powles, Stephen, (2017) Phorate can reverse P450 metabolism-based herbicide resistance in Lolium rigidum Pest Management Science 73 410-417

Sarangi, Debalin, Tyre, Andrew J, Patterson, Eric, Gaines, Todd, Irmak, Suat, Knezevic, Stevan Z, Lindquist, John L, Jhala, Amit J, (2017) Pollen-mediated gene flow from glyphosate-resistant common waterhemp (Amaranthus rudis Sauer): consequences for the dispersal of resistance genes Scientific Reports 7 44913

Beckie, Hugh J, Blackshaw, Robert E., Leeson, J, Stahlman, P. W., Gaines, Todd, Johnson, Eric A., (2017) Seed bank persistence, germination and early growth of glyphosate-resistant Kochia scoparia Weed Research In press

Kuepper, Anita, Peter, Falco, Zöllner, Peter, Lorentz, Lothar, Tranel, Patrick J, Beffa, Roland, Gaines, Todd, (2017) Tembotrione detoxification in HPPD‐inhibitor resistant Palmer amaranth (Amaranthus palmeri S. Wats.) Pest management science

Johnson, Jerry J, Haley, Scott D, Jones, Sally, Asfeld, Edward, Meyer, Ronald F, Trujillo, Wilma, Kaan, Dennis A, Roesch, K., Larson, Kevin, Vigil, Merle F, Pettinger, Brett Terrill, Novak, Rick Allen, Peairs, Frank B, Broders, Kirk Dale, Byrne, Patrick F, Gaines, Todd, Westra, Philip, Walker, T., Erker, Brad, (2017) "TR17-4: Making Better Decisions, 2017 Colorado Winter Wheat Variety Performance Trials" Colorado Agricultural Experiment Station

Gaines, Todd, Tranel, Patrick, Fleming, Margaret Brigham, Patterson, Eric, Kuepper, Anita, Ravet, Karl, Giacomini, Darci, Gonzalez, Susana, Beffa, Roland, (2017) "Applications of Genomics in Weed Science" CRC Press

Knezevic, Stevan, Jhala, Amitkumar, Gaines, Todd, (2017) "Herbicide Resistance and Molecular Aspects" Elsevier 3 455-458

Oliveira, Maxwel C, Gaines, Todd, Dayan, Franck E, Patterson, Eric, Jhala, Amit J, Knezevic, Stevan Z, (2017) Reversing resistance to tembotrione in an Amaranthus tuberculatus (var. rudis) population from Nebraska, USA with cytochrome P450 inhibitors Pest Management Science

Brunharo, Caio A. C. G., , Patterson, Eric, Carrijo, Daniela R., de Melo, Marcel S. C., , Nicolai, Marcelo, Gaines, Todd, Nissen, Scott J, Christoffoleti, Pedro J., (2016) Confirmation and mechanism of glyphosate resistance in tall windmill grass (Chloris elata) from Brazil Pest Management Science 72 9 1758-1764

Gaines, Todd, Barker, Abigail Lynn, Patterson, Eric, Westra, Philip, Westra, Eric Philip, Wilson, Robert G., Jha, Prashant, Kumar, Vipan, Kniss, Andrew R., (2016) EPSPS gene copy number and whole-plant glyphosate resistance level in Kochia scoparia PLOS ONE 11 12 e0168295

Li, Zhenyi, Kessler, Kallie Christine, Figueiredo, Marcelo Rodrigues Alves de, , Nissen, Scott J, Gaines, Todd, Westra, Philip, Acker, Rene C. Van, Hall, Christopher, Robinson, Darren E., Soltani, Nader, Sikkema, Peter H., (2016) Halosulfuron absorption, translocation, and metabolism in white and adzuki bean Weed Science 64 4 705-711

Kuepper, Anita, Borgato, E.A., Patterson, Eric, Netto, A GONÇALVES, , Nicolai, M, Carvalho, S.J.P., Nissen, Scott J, Gaines, Todd, Christoffoleti, P.J., (2016) Multiple resistance to glyphosate and ALS inhibitors in Palmer amaranth (Amaranthus palmeri) identified in Brazil Weed Science

Powles, Stephen B, Gaines, Todd, (2016) Exploring the potential for a regulatory change to encourage diversity in herbicide use Weed Science 64 649-654

Christoffoleti, Pedro Jacob, Figueiredo, Marcelo, Pereira Peres, Lazaro Eustaquio, Nissen, Scott J, Gaines, Todd, (2015) Auxinic herbicides, mechanisms of action, and weed resistance: A look into recent plant science advances Scientia Agricola 72 4 356-362

Wiersma, A.T., Gaines, Todd, Preston, C., Hamilton, J.P., Giacomini, D., Buell, C Robin, Leach, Jan E, Westra, Philip, (2015) Gene amplification of 5-enol-pyruvylshikimate-3-phosphate synthase in glyphosate-resistant Kochia scoparia Planta 241 463-474

Lorentz, L, Gaines, Todd, Nissen, Scott J, Westra, Philip, Strek, H., Dehne, H.W., Ruiz-Santaella, J. P., Beffa, R, (2014) Characterization of glyphosate resistance in Amaranthus tuberculatus populations Journal of Agricultural and Food Chemistry 62 8134-8142

Sammons, Douglas R, Gaines, Todd, (2014) Glyphosate resistance: State of knowledge Pest Management Science 70 1367-1377

Busi, Roberto, Gaines, Todd, Vila-Aiub, Martin M, Powles, Stephen B, (2014) Inheritance of evolved resistance to a novel herbicide (pyroxasulfone) Plant Science 217 127-134

Vila-Aiub, Martin M, Goh, Sou S, Gaines, Todd, Han, Heping, Busi, Roberto, Yu, Qin, Powles, Stephen B, (2014) No fitness cost of glyphosate resistance endowed by massive EPSPS gene amplification in Amaranthus palmeri Planta 239 793-801

Gaines, Todd, Lorentz, Lothar, Figge, Andrea, Herrmann, Johannes, Maiwald, Frank, Ott, Mark‐Christoph, Han, Heping, Busi, Roberto, Yu, Qin, Powles, Stephen B, Beffa, R, (2014) RNA-Seq transcriptome analysis to identify genes involved in metabolism-based diclofop resistance in Lolium rigidum The Plant Journal 78 865-876

Busi, Roberto, Vila‐Aiub, Martin M, Beckie, Hugh J, Gaines, Todd, Goggin, Danica E, Kaundun, Shiv S, Lacoste, Myrtille, Neve, Paul, Nissen, Scott J, Norsworthy, Jason K, Renton, Michael, Shaner, Dale L, Tranel, Patrick J, Wright, Terry, Yu, Qin, Powles, Stephen B, (2013) Herbicide-resistant weeds: from research and knowledge to future needs Evolutionary Applications 6 8 1218-1221

Gaines, Todd, Wright, A.A., Molin, W.M., Lorentz, L., Riggins, C. W., Tranel, P. J., Beffa, R., Westra, Philip, Powles, S.B., (2013) Identification of genetic elements associated with EPSPS gene amplification PLOS One 8 6 e65819

Gaines, Todd, Cripps, Andrew, Powles, Stephen B, (2012) Evolved resistance to glyphosate in junglerice (Echinochloa colona) from the tropical Ord River region in Australia Weed Technology 26 3 480-484

Gaines, Todd, Ward, Sarah M, Bukun, B., Preston, C., Leach, Jan E, Westra, Philip, (2012) Interspecific hybridization transfers a previously unknown glyphosate resistance mechanism in Amaranthus species Evolutionary Applications 5 29-38

Busi, R., Gaines, Todd, Walsh, M. J., Powles, S.B., (2012) Understanding the potential for resistance evolution to the new herbicide pyroxasulfone: field selection at high doses versus recurrent selection at low doses Weed Research 52 489-499

Gaines, Todd, Shaner, D. L., Ward, Sarah M, Leach, Jan E, Preston, C., Westra, Philip, (2011) Mechanism of resistance of evolved glyphosate-resistant Palmer amaranth (Amaranthus palmeri) Journal of Agricultural and Food Chemistry 59 5886-5889

Gaines, Todd, Zhang, W., Wang, D., Bukun, B., Chisholm, Stephen T, Shaner, D. L., Nissen, Scott J, Patzoldt, W. L., Tranel, P. J., Culpepper, A. S., Grey, T. L., Webster, T. M., Vencill, W. K., Sammons, R. D., Jiang, J.M., Preston, C., Leach, Jan E, Westra, Philip, (2010) Gene amplification confers glyphosate resistance in Amaranthus palmeri Proceedings of the National Academy of Sciences of the United States of America 107 3 1029-1034

Bukun, Bekir, Gaines, Todd, Nissen, Scott J, Westra, Philip, Brunk, Galen R, Shaner, Dale L, Sleugh, Byron B, Peterson, Vanelle F, (2009) Aminopyralid and clopyralid absorption and translocation in Canada thistle (Cirsium arvense) Weed Science 57 1 10-15

Byrne, Patrick F, Gaines, Todd, Westra, Philip, Henry, W B, Nissen, Scott J, Chapman, P, Harrington, Judith Eileen, (2008) "Estimating gene flow from wheat to wheat and wheat to jointed goatgrass (Aegilops cylindrica)" CSU Agricultural Experiment Station TB08-03

Gaines, Todd, Brien Henry, W, Byrne, Patrick F, Westra, Philip, Nissen, Scott J, Shaner, Dale L, (2008) Jointed goatgrass (Aegilops cylindrica) by imidazolinone-resistant wheat hybridization under field conditions Weed Science 56 1 32–36

Westra, Philip, Wilson, Robert G, Miller, Stephen D, Stahlman, Phillip W, Wicks, Gail W, Chapman, Phillip L, Withrow, John, Legg, David, Alford, Craig, Gaines, Todd, (2008) Weed population dynamics after six years under glyphosate-and conventional herbicide-based weed control strategies Crop Science 48 3 1170-1177

Gaines, Todd, Preston, Christopher, Byrne, Patrick F, Henry, W Brien, Westra, Philip, (2007) Adventitious presence of herbicide resistant wheat in certified and farm-saved seed lots Crop Science 47 2 751–754

Gaines, Todd, Byrne, Patrick F, Westra, Philip, Nissen, Scott J, Henry, W Brien, Shaner, Dale L, Chapman, Phillip Lee, (2007) An empirically derived model of field-scale gene flow in winter wheat Crop Science 47 6 2308–2316

Broderick, Samuel, Chapman, Phillip Lee, Byrne, Patrick F, Gaines, Todd, (2007) Tolerance Intervals for Gene Flow Rates from Transgenic to Non-Transgenic Wheat and Corn Using a Logistic Regression Model with Random Location Effects

Gaines, Todd, Byrne, Patrick F, Westra, Phil, Nissen, Scott J, Henry, W Brien, Hanson, Brad, Belles, David, Shaner, Dale L, (2005) Estimating Landscape Level Gene Flow in Wheat and Jointed Goatgrass. Parameters 1 1.6 1–8