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Dr Christopher Preston

Telephone +61 8 8313 7237
Position Lecturer
Fax +61 8 8313 7109
Building Waite Building
Floor/Room GN 08
Campus Waite
Org Unit School of Agriculture, Food and Wine

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Research Interests

The Weed Science lab has a range of interests in weed management issues. These include the evolution, biochemical mechanisms of herbicide resistant weeds, gene flow from herbicide tolerant crops and its implications for farm management, risk assessment for weeds and herbicide tolerant crops and patterns of genetic diversity in weed populations. Current projects include:

  • Understanding and management of glyphosate resistant weeds

  • New management practices for herbicide resistant grass weeds in no-till cropping systems

  • Integrated weed management of grass weeds in Southern Australian cropping systems

  • Gene flow in glyphosate tolerant canola

  • Mechanisms and inheritance of glyphosate resistance in Bromus diandrus

  • Mechansims and inheritance of resistance to 2,4-D, diflufenican, atrazine and ALS-inhibiting herbicides in Sisymbrium orientale

  • Mechanisms and inheritance of glyphosate resistance in Echinochloa colona

  • Biology and management of emerging weeds

  • Understanding behaviour of pre-emergent herbicides in disc seeding systems

  • Resistance to ACCase-inhibiting herbicides in Hordeum spp. and its management

  • Managment of resistance to clethodim in Lolium rigidum

  • Glyphosate resistance in Conyza bonariensis and its management

  • Novel herbicide tolerance in pulse crops


Some recent publications:

Preston, C. and Wakelin, A.M.  2008.  Resistance to glyphosate from altered herbicide translocation patterns.  Pest Management Science 64, 372-376.

Werth, J.A., Preston, C., Taylor, I.N., Charles, G.W., Roberts, G.N. and Baker, J.  2008.  Managing the risk of glyphosate resistance in Australian glyphosate-resistant cotton production systems.  Pest Management Science 64, 417-421.

Werth, J.A., Preston, C., Roberts, G.N. and Taylor, I.N.  2008.  Weed management impacts on the population dynamics of barnyardgrass (Echinochloa crus-galli) in glyphosate-resistant cotton in Australia.  Weed Technology 22, 190-194.

Ramezani, M., Oliver, D.P., Kookana, R.S., Gill, G. and Preston, C.  2008.  Abiotic degradation (photodegradation and hydrolysis) of imidazolinone herbicides.  Journal of Environmental Science and Health. Part B, Pesticides, Food Contaminants, and Agricultural Wastes 43, 105-112.

Baker, J. and Preston, C.  2008.  Canola (Brassica napus L.) seedbank declines rapidly in farmer-managed fields in South Australia.  Australian Journal of Agricultural Research 59, 780-784.

Preston, C., Belles, D.S., Westra, P.H., Nissen, S.J. and Ward, S.M.  2009.  Inheritance of resistance to the auxinic herbicide dicamba in kochia (Kochia scoparia).  Weed Science 57, 43-47.

Ramezani, M., Simpson, N., Oliver, D., Kookana, R., Gill, G. and Preston, C.  2009.  Improved extraction and clean-up of imidazolinone herbicides from soil solutions using different solid-phase sorbents.  Journal of Chromatography A 1216, 5092-5100.

Preston, C., Wakelin, A.M., Dolman, F.C., Bostamam, Y. and Boutsalis, P.  2009.  A decade of glyphosate-resistant Lolium around the World: mechanisms, genes, fitness, and agronomic management.  Weed Science 57, 435-441.

Ramezani, M.K., Oliver, D.P., Kookana, R.S., Lao, W.J., Gill, G. and Preston, C.  2010.  Faster degradation of herbicidally-active enantiomer of imidazolinones in soils.  Chemosphere 79, 1040-1045.

Gaines, T.A., Zhang, W.L., Wang, D.F., Bukun, B., Chisholm, S.T., Shaner, D.L., Nissen, S.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, J.E. and Westra, P.  2010.  Gene amplification confers glyphosate resistance in Amaranthus palmeri.  Proceedings of the National Academy of Sciences, USA 107: 1029-1034.

Gaines, T.A., Shaner, D.L., Ward, S.M., Leach, J.E., Preston, C. and Westra, P.  2011. Mechanism of resistance of evolved glyphosate-resistant Palmer amaranth (Amaranthus palmeri). Journal of Agricultural and Food Chemistry 59, 5886-5889.  

Gaines, T.A., Ward, S.M., Bukun, B., Preston, C., Leach, J.E. and Westra, P. 2012.  Interspecific hybridization transfers a previously unknown glyphosate resistance mechanism in Amaranthus species.  Evolutionary Applications 5: 29-38.

Ge, X., d'Avignon, D.A., Ackerman, J.J.H, Collavo, A., Sattin, M., Ostrander, E. L., Hall, E.L., Sammons, R.D., and Preston, C. 2012. Vacuolar glyphosate-sequestration correlates with glyphosate resistance in ryegrass (Lolium spp.) from Australia, South America and Europe: a 31P-NMR investigation. Journal of Agricultural and Food Chemistry 60: 1243-1250.

Bostamam, Y., Malone, J.M., Dolman, F.C., Boutsalis, P. and Preston, C. 2012. Rigid ryegrass (Lolium rigidum) populations containing a target site mutation in EPSPS and reduced glyphosate translocation are more resistant to glyphosate.  Weed Science 60: 474-479.

Boutsalis, P., Gill, G.S. and Preston, C. 2012. Incidence of herbicide resistance in rigid ryegrass (Lolium rigidum) across south-eastern Australia.  Weed Technology 26: 391-398.

Chandi, A., Milla-Lewis, S., Giacomni, D, Westra, P., Preston, C., Jordan, D.L., York, A., Burton, J., and Whitaker, J. 2012. Inheritance of evolved glyphosate resistance in a North Carolina Palmer amaranth (Amaranthus palmeri) Biotype. International Journal of Agronomy 2012, Article ID 176108, 7 pages. doi:10.1155/2012/176108.

Preston, C., Dolman, F.C. and Boutsalis, P. 2013. Multiple resistance to acetohydroxyacid synthase-inhibiting and auxinic herbicides in a population of oriental mustard (Sisymbrium orientale).  Weed Science 61: 185-192.

Adu-Yeboah, P., Malone, J.M., Gill, G. and Preston, C. 2014. Reduced glyphosate translocation in two glyphosate-resistant populations of rigid ryegrass (Lolium rigidum) from fence lines in South Australia. Weed Science 62: 4-10.

Malone, J.M., Boutsalis, P., Baker, J., and Preston, C. 2014. Distribution of herbicideresistant acetylcoenzyme A carboxylase alleles in Lolium rigidum across grain cropping areas of South Australia. Weed Research 54: 78-86.

Boutsalis, P., Gill, G.S., and Preston, C. 2014. Control of rigid ryegrass in Australian wheat production with pyroxasulfone. Weed Technology 28: 332-339.

Kleemann, S.G., Preston, C., and Gill, G. S. 2014. Influence of seeding system disturbance on preplant incorporated herbicide control of rigid ryegrass (Lolium rigidum) in wheat in Southern Australia. Weed Technology 28: 323-331.



Expertise for Media Contact

CategoriesAgriculture & Farming
ExpertiseCrop protection (weed management, herbicides, herbicide resistance); crop protection (resistance); weeds (management and control); Genetically modified crops
NotesAlt phone: (08) 8303 8149
Mobile0488 404 120

Entry last updated: Sunday, 22 Nov 2015

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