Food Security

, Volume 8, Issue 4, pp 865–870 | Cite as

Genetic modification for disease resistance: a position paper

  • Peter Scott
  • Jennifer Thomson
  • David Grzywacz
  • Serge Savary
  • Richard Strange
  • Jean B. Ristaino
  • Lise Korsten
Original Paper

Abstract

This Position Paper was prepared by members of the Task Force on Global Food Security of the International Society for Plant Pathology. An objective approach is proposed to the assessment of the potential of genetic modification (GM) to reduce the impact of crop diseases. The addition of GM to the plant breeder’s conventional toolbox facilitates gene-by-gene introduction into breeding programmes of well-defined characters, while also allowing access to genes from a greatly extended range of organisms. The current status of GM crops is outlined. GM could make an additional contribution to food security but its potential has been controversial, sometimes because of fixed views that GM is unnatural and risky. These have no factual basis: GM technology, where adopted, is widely regulated and no evidence has been reported of adverse consequences for human health. The potential benefits of GM could be particularly valuable for the developing world but there are numerous constraints. These include cost, inadequate seed supply systems, reluctance to adopt unfamiliar technology, concern about markets, inadequacy of local regulatory systems, mismatch between research and growers’ needs, and limited technical resources. The lower cost of new gene-editing methods should open the practice of GM beyond multinational corporations. As yet there are few examples of utilization of GM-based resistance to plant diseases. Two cases, papaya ringspot virus and banana xanthomonas wilt, are outlined. In the developing world there are many more potential cases whose progress is prevented by the absence of adequate biosafety regulation. It is concluded that there is untapped potential for using GM to introduce disease resistance. An objective approach to mobilizing this potential is recommended, to address the severe impact of plant disease on food security.

Keywords

Genetic modification Genetic engineering Plant breeding Food security Disease resistance Developing countries Biosafety 

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Copyright information

© Springer Science+Business Media Dordrecht and International Society for Plant Pathology 2016

Authors and Affiliations

  1. 1.International Society for Plant PathologyOxfordUK
  2. 2.Department of Molecular and Cell BiologyUniversity of Cape TownRondeboschRepublic of South Africa
  3. 3.NRI - Department of Agriculture Health and EnvironmentUniversity of Greenwich, Old Royal Naval CollegeLondonUK
  4. 4.INRA, UMR1248 AGIRUniversité ToulouseToulouseFrance
  5. 5.Department of Genetics, Evolution and EnvironmentUniversity College LondonLondonUK
  6. 6.USAID Senior Science Advisor, Department of Plant PathologyNorth Carolina State UniversityRaleighUSA
  7. 7.Department of Microbiology and Plant PathologyUniversity of PretoriaPretoriaRepublic of South Africa

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