Weed science, weed biology, herbicide resistance, molecular genetics of weeds

Research Interests:

My main interest is currently in the understanding of herbicide resistance in weeds. This includes topics such as:

• Characterization of new cases
• Development of diagnostic tools
• Understanding the effect of resistance mutations on fitness
• Developing management programs

For further information please visit:
http://www.plant.uoguelph.ca/research/weedsci

Selected Publications:

Ashigh, J., Corbett, C.A.L, Smith P. J., Laplante, J., and Tardif, F. J. (2009) Characterization and diagnostic tests of resistance to acetohydroxyacid synthase inhibitors due to an Asp376Glu substitution in Amaranthus powellii. Pesticide Biochemistry and Physiology (DOI: 10.1016/j.pestbp.2009.06.002)

Ashigh, J, and Tardif, F.J. (2009) An amino acid substitution at position 205 of acetohydroxyacid synthase reduces fitness under optimal light in resistant populations of Solanum ptychanthum. Weed Research (DOI:10.1111/j.1365-3180.2009.00717x)

Laplante, J., Rajcan, I., and Tardif, F.J. (2009) Multiple allelic forms of acetohydroxyacid synthase are responsible for herbicide resistance in Setaria viridis. Theoretical and Applied Genetics. (DOI 10.1007/s00122-009-1067-5)

Kaastra, A. C., Swanton C. J., Tardif F. J. and Sikkema, P. H. (2008) Two-way performance interactions among HPPD- and ALS-inhibiting herbicides. Weed Science 56: 841–851

Corbett, C.A.L and Tardif F.J. (2008) Detection of resistance to acetohydroxyacid synthase inhibitors in Amaranthus sp. using DNA polymorphisms. Pesticide Biochemistry and Physiology 92: 48-55

Elford, E. M. A., Tardif, F. J., Robinson, D., and Lyons, E. M. (2008) The effect of perennial ryegrass overseeding on weed suppression and sward composition. Weed Technology 22: 231-239.

Ashigh, J., Rajcan, I., and Tardif, F. J. (2008). Genetics of resistance to acetohydroxyacid synthase inhibitors in populations of eastern black nightshade (Solanum ptychanthum) from Ontario. Weed Science 56:210-215.

Ashigh, J. and Tardif, F. J. (2007) An Ala205Val substitution in acetohydroxyacid synthase of Eastern black nightshade (Solanum ptychanthum) reduces sensitivity to herbicides and feedback inhibition. Weed Science 55:558-565

Beckie, H. J., L.M. Hall, F.J. Tardif, and G. Séguin-Swartz. (2007) Acetolactate synthase inhibitor-resistant stinkweed (Thlaspi arvense L.) in Alberta. Canadian Journal of Plant Science (in press)

Ashigh, J. and F.J. Tardif. (2007). An Ala205Val substitution in acetohydroxyacid synthase of Eastern black nightshade (Solanum ptychanthum) reduces sensitivity to herbicides and feedback inhibition. Weed Science (in press)

 

More publications:

For more of Dr. Tardif's publications, please visit the Weed Science website.