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Oak Park Staff

Ewen Mullins  

 

Title Senior Research Officer
Job Remit Impact assessment of GM crops
Phone Number +353 59 9170298
Email ewen.mullins@teagasc.ie
Programme website www.gmoInfo.ie
   
   

 

Research Programme

For centuries, farmers have been improving and modifying their crops. Through the process of selective breeding, specific traits are identified and a hybrid line is created that expresses the desired agronomic character (e.g. high yield, disease resistance). This conventional form of breeding has had great success but by its nature has also imposed many restrictions. Modern day biotechnology provides a means to accelerate this pace of discovery and over the last decade especially, the application of this science to crop improvement has provided a tremendous insight into its potential.

Now, through biotechnology, a gene of interest that originates in bacteria, fungi, another plant or even an animal can now be inserted into a specific crop. As a consequence, certain crops now possess characteristics that previously would have been considered unattainable. Though potentially advantageous, the production of these transgenic or genetically modified (GM) plants has invoked public concern, in regard to the perceived impacts associated with the coexistence of GM and non-GM crops.

To address these concerns, we have undertaken to investigate the potential agronomic and environmental impact of a select number of GM crops that could provide an economic benefit to Irish farmers through reduced chemical input costs. We are currently investigating the agronomic potential of disease resistant potato and herbicide tolerant oilseed rape. In parallel, we are conducting a gene discovery programme in wheat, with the goal of isolating genes that could be transferred into wheat to confer increased resistance to the important leaf disease Septoria tritici. This is critically important in light of the decreased efficacy of existing fungicide regimes.

We have recently concluded a 2-year study to develop cost-effective production measures to facilitate the cultivation of GM herbicide tolerant oilseed rape in coexistence with non-GM oilseed rape cultivars. Employing the GENESYS gene flow modelling system, the goal of this study was to preserve the sustainability of existing non-GM oilseed rape systems in Ireland, should there be an uptake of GMHT oilseed rape in the near future.

To facilitate the transparent dissemination of research data into the public domain, all peer-reviewed research from the programme is available through the programme’s website, www.gmoInfo.ie.

 

Research Projects

 

Post-doctoral Researchers

  • Sinead Phelan - Establishing crop guidelines for the coexistence of GM and non-GM potato
  • Marcus Collier - Biodiversity impacts of future GM crop cultivation in Ireland

 

Current post-graduate students

  • Rupali Shitole - Producing high value products through the bioconversion of wheat by Fusarium oxysporum
  • Toni Wendt – Investigating alternative processes of gene transfer into plants
  • Rosanna Hennessy - Enhancing the conversion of straw/bran into bioethanol with transgenic Fusarium spp.
  • Moses Nyongesa - Testing the efficacy of transgenes conferring strong resistance to potato blight
  • Paul Flanagan – Agronomic implications associated with the coexistence of HT and conventional oilseed rape
     
 

Past students

  • Carloalberto Petti – Risk assessment of GM potato with increased blight tolerance ( PhD, 2008)
  • Lucy Courtney – Developing clover with enhanced resistance to Sclerotinia trifoliorum ( M.Sc, 2007)

 

Select Publications

  • Petti, C., Wendt, T., Meade, C and Mullins, E. (2009). Evidence of genotype dependency within Agrobacterium tumefaciens in
    relation to the integration of vector backbone sequence in transgenic Phytophthora infestans-tolerant potato.
    Journal of Bioscience and Bioengineering, 107(3), 301-306.
  • O'Brien, M. and Mullins, E. (2009).Relevance of genetically modified crops in light of future environmental and legislative challenges to the agri-environment. Annals of Applied Biology, 154, 323-340.
  • Kildea, S., Ransbotyn, V., Khan, M., Fagan, B., Mullins, E. and Doohan, F. (2008). Bacillus megaterium shows potential for the biocontrol of septoria tritici blotch of wheat. Biological Control, 47 (1), 37-45.
  • O’Brien, M., Spillane, C., Meade, C. and Mullins E. (2008). An insight into the impact of arable farming on Irish biodiversity: A scarcity of studies hinders a rigorous assessment.
    Biology and Environment, Proceedings of the Royal Irish Academy, Volume 108B, Issue 2, pp 97 - 108.
  • Petti, C. Meade, C and Mullins, E. (2007). Facilitating co-existence by tracking gene dispersal in conventional potato systems with microsatellite markers.
    Environmental Biosafety Research 6(4), 223-231.
  • Ryan, E., Meade, C., Mullins, E., Burke, J. and Downes, M. (2007). Tracing field hybridisation in ryegrass species using microsatellite and morphological markers.
    Environmental Biosafety Research , Vol. 5(2), p106-118.
  • Mullins, E., Milbourne, D., Petti, C. Doyle-Prestwich, B.M. and Meade, C. (2006). Potato in the age of biotechnology.
    Trends in Plant Science, 11(5): 254-260.
  • Flannery, M-L., Meade, C.M. and Mullins, E. (2005). Employing a composite gene-flow index to numerically quantify a crop’s potential for gene flow: an Irish perspective.
    Environmental Biosafety Research, Vol. 1, No. 4, p. 29.
  • Flannery, M-L., Thorne, F.S., Kelly, P.W. and Mullins, E. (2005). An economic cost-benefit analysis of GM crop cultivation: An Irish case study.
    AgBioforum – Journal of Agrobiotechnology, Management and Economics, 7(4): 1-9.
  • Meade, C. M. and Mullins, E. (2005). GM crop cultivation in Ireland: Ecological and Economical considerations.
    Biology and Environment, Proceedings of the Royal Irish Academy, Vol. 105B, No. 1, p. 33-52.
  • Ospina-Giraldo, M., Mullins, E. and Kang, S. (2003). Loss of function of the Fusarium oxysporum SNF1 gene reduces virulence on cabbage and Arabidopsis.
    Current Genetics, 44 (1), 49-57.
  • Kang, S., Ayers, J.E., DeWolf, E., Geiser, D., Kuldau, G., Moorman, G.W., Mullins, E., Correll, J.C., Deckert, G., Lee, Y-W., Martin, F.N. and Subbarao, K. (2002). Internet-based database for cataloguing the genetic and phenotype diversity of plant pathogens. Phytopathology, 92: 232-236.
  • Mullins, E. and Kang, S. (2001). Review: Transformation as a tool for studying plant pathogens.
    Cellular and Molecular Life Sciences, 58: 2043-2052.
  • Mullins, E., Chen, X., Romaine, P., Raina, R., Geiser, D.M. and Kang, S. (2001). Agrobacterium-mediated transformation of Fusarium oxysporum: An efficient tool for insertional mutagenesis and gene transfer.
    Phytopathology, Vol. 91, 173-180.