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Lesley Torrance

Staff picture: Lesley Torrance
Director of Science
Director of Science
Lesley.Torrance@hutton.ac.uk
+44 (0)344 928 5428 (*)

The James Hutton Institute
Invergowrie
Dundee DD2 5DA
Scotland UK

 

Lesley is Executive Director of Science at the James Hutton Institute and Professor of Biology at the University of St Andrews. She was appointed member of CGIAR advisory panel, the International Science for Development Council, in 2019 and elected Fellow of the Royal Society of Edinburgh in 2020. In addition, she is a non-executive Director of the Dundee Science Centre.

Follow her on Twitter: @ltorra_l

Current research interests

Research on potato viruses, particularly potato virus Y and transdisciplinary research on potato production systems in sub-Saharan Africa. We are working to identify potato clones that are resilient to abiotic stresses as well as diseases and that crop quickly with high yields  in warmer environments.

Current research collaboration: “Food security and Health for East Africa; Producing new climate resilient and disease resistant potato varieties tailored to potato production systems”  The University of St Andrews with partners, The James Hutton Institute, the International Potato Centre (Nairobi and Lilongwe), The Department of Agriculture Research Services, Bvumbwe, Malawi and The Masinde Muliro University of Science and Technology, Kakamega Kenya. Hutton team: Lesley Torrance, Mark Taylor, Carla Barlagne, Graham Cowan, Ray Campbell and Laurence Ducreaux

We have exploited our basic research on virus resistance, heat tolerance and early maturity to evaluate 60 genotypes of potato in challenging environments in both Kenya and Malawi.  From this we selected 12 candidate clones for further evaluation.  We have also engaged with farmers and commercial end users through focus groups and choice experiments to exchange views on potato tubers to ensure the clones selected from this work will meet grower and consumer needs.

Kenya harvest January 2021 of plants grown from Scottish glasshouse grown mini tubers (G0) and tubers harvested in June (grown in long rains season; G1 tubers) reveal excellent yields from both with exceptional performance in some lines.  Some good candidates for developing new SSA varieties.

Mayan Gold potatoesThe potato cultivar Mayan Gold has passed national Perfomance Trials in Kenya and is approved for distribution to farmers. Mayan Gold has excellent properties that are beneficial for small holder rural farmers including PVY resistance, fast cooking time, good fry quality and good taste.

Our paper on distribution of pests and diseases in Kenyan potato growing regions has been published in Potato Research: Occurrence and distribution of potato pests and diseases in Kenya.

Strengthening Potato Production in SSA; Malawi and Kenya

Potato field trial at Bvumbwe Research StationMalawi: Working with partners Paul Demo, CIP potato seed specialist, Malawi and Felistus Chipungu, Department Agriculture Research Services, Bvumbwe Research Station.

This Scottish Government supported project aims to contribute to poverty reduction and food security through strengthening the development of sustainable potato production and marketing systems for improved productivity and trade. The main achievements to date are in renovation and upgrading facilities for mini tuber production, the introduction and evaluation of new cultivars and capacity building.

Field training in testing for bacterial wilt in MalawiIn collaboration with DARS, CIP and SASA, Edinburgh we delivered a training course in seed potato crop inspection, disease identification, and diagnostic in Dedza District of Malawi, 13–16 March 2012. Lesley Torrance and two senior potato seed inspectors (John Ellicott and Maureen McCreath) travelled from Scotland to Malawi for the training.

The course had 37 trainees from different organisations in Malawi involved in seed quality control, seed production, or in backstopping farmers. We conducted classroom and field work and surveyed local farmers’ fields. This year was a bad one for late blight with many crops destroyed or badly affected. Potato crops were also affected by PVY and bacterial wilt. We found recombinant strains of PVY in potato crops.

Scottish Government Funded Potato Project, Training Course, Near Dedza Pottery, Malawi, March 2012 from eric monaghan on Vimeo.

Reported in Malawi Times, March 2021:

Our field trials conducted by Malawi partners led by Senior Deputy Director of Agricultural Research Services Margaret Chiipanthenga in the Department of Agricultural Research Services have revealed good yields from our potato lines being trialled in non-traditional growing districts of Malawi.

“In Malawi, we have a high demand for potato, yet the only districts that produce it are Ntcheu and Dedza and parts of Nyika and Viphya highlands, which are a bit cold.

“We are looking at places where we can produce potato to meet the demand. That’s why we are trying to produce them in areas outside the cold areas,” Chiipanthenga said.

The varieties were produced under a project dubbed QuickGro, which is aimed at producing potato varieties that are heat-tolerant and resistant to late blight and viral diseases as well as high yielding. QuickGro Project Manager Obed Mwenye said farmers could harvest mature tubers within two months after planting.

“One major advantage with the early maturing varieties is that farmers can start to eat even before maize starts tussling, a lean period in most parts of the country, and in which most households are in dire need of food,” Mwenye said.

Kenya: The project is supported by The Monsanto Fund and we are working with partners Dr Hassan Were (Masinde Muliro University of Science and Technology, Kakamega), Dr J. Kabira, KARI Tigoni and Professor F. Olubayo (University of Nairobi).

Vales Sovereign potatoes sent to Kenya

The main outcomes of this project are:

  • A comprehensive pest and disease survey in all five major potato producing areas in Kenya.
  • Identification of areas of low aphid pressure for seed tuber multiplication.
  • Introduction of tissue culture microplants of 12 cultivars with different agronomic qualities to KARI Tigoni who have bulked up the material.

All introduced cultivars are growing well in the region. Sufficient material of three cultivars has been submitted for National Performance Trials and we are collaborating with the Kenyan National Potato Council to disseminate information and demonstrate the qualities of the new material in field trials.

Bibliography

  • Roberts, D.; Torrance, L.; Stirton, G.; Britton, A.J.; Craig, C.; Kyle, C-A.; Abel, C.; Macaulay, C.; Fielding, D.; Watson, H.; Pohle, I.; Robertson, J.; Maxwell, J.; Irvine, K.; Sutherland, L-A.; Dawson, L.A.; Shepherd, L.; Miller, P.; Ellis, R.; Richards, S.; Blok, V.; Hackett, C.; Kettle, H. (2018) Women in Science., The James Hutton Institute, 25pp.
  • Were, H. K.; Olubayo, F.M.; Kabira, J.; Aura, J.; Torrance, L. (2015) Aphids infesting potato in Kenya., In: Low, J., Nyongesa, M., Quinn, S. & Parker, M. (eds.). Potato and Sweetpotato in Africa: Transforming the Value Chains for Food and Nutrition Security. CAB International, Chapter 38, 396-404.
  • Tilsner, J.; Taliansky, M.E.; Torrance, L. (2014) Plant virus movement., In: Harper, D. (ed.). eLS, Encyclopedia of Life Sciences. John Wiley & Sons, Ltd, Chichester, A20711.
  • Al-Mrabeh, A.; Anderson, E.A.; Torrance, L.; Evans, A.; Fenton, B. (2010) A literature review of insecticide and mineral oil use in preventing the spread of non-persistent viruses in potato crops., The Potato Council Ltd., Stoneleigh, 65pp.
  • Haupt, S.; Ziegler, A.; Cowan, G.H.; Torrance, L. (2009) Studies of the role and function of Barley stripe mosaic virus encoded proteins in replication and movement using GFP fusions., In: Hicks, B.W. (ed.). Viral Applications of Green Fluorescent Protein. Methods in Molecular Biology Volume 515. Springer, Berlin, Germany, Chapter 20, 287-297.
  • Torrance, L. (2008) Pomovirus., In: Mahy, W.J. & van Regenmortel, M. (eds.). Encyclopedia of Virology. 3rd edition. Elsevier, Amsterdam, 282-287
  • Taliansky, M.E.; Torrance, L. (2008) Plant virus movement., In: Harper, D. (ed.). Encyclopedia of Life Sciences. John Wiley & Sons, Ltd, Chichester, A20711
  • Taliansky, M.E.; Torrance, L.; Kalinina, N.O. (2008) Role of plant virus movement proteins., In: Foster, G.D., Hong, G., Johansen, I.E. & Nagy, P.D. (eds.). Plant Virology Protocols: From Viral Sequence to Protein Function. 2nd edition. Humana Press, Totowa, New Jersey, pp33-54.
  • Haupt, S.; Ziegler, A.; Torrance, L. (2008) Localisation of viral proteins in plant cells: protein tagging., In: Foster, G.D., Johansen, I.E., Hong, Y. & Nagy, P.D. (eds.). Plant Virology Protocols: From Viral Sequence to Protein Function. 2nd edition. Humana Press, Totowa, New Jersey, pp463-473.
  • Torrance, L.; Koenig, R. (2004) Furovirus., In: Fauquet, C.M., Mayo, M.A., Maniloff, J., Desselberger, U. & Ball, L.A. (eds.). Virus Taxonomy, Classification and Nomenclature of Viruses. Elsevier, Amsterdam, pp1027-1032.
  • Torrance, L. (2004) Antibody and nucleic acid based techniques., In: Lapierre, H. & Signoret, P. (eds.). Virus diseases of Poaceae (Gramineae). INRA Editions, Paris, pp99-108.
  • Torrance, L. (2000) Genus Furovirus., In: Van Regenmortel, M.H.V., Fauquet, C. & Bishop, D.H.L (eds.). Virus Taxonomy, Seventh report of the International Committee on Taxonomy of Viruses. Harcourt International, pp904-908.
  • Harper, K.; Toth, R.L.; Mayo, M.; Torrance, L. (1999) Selection of anti-plant virus single chain variable fragments from phage display libraries., In: Ziegler, A. & Harper, K. (eds.). Recombinant antibodies-applications in plant science and plant pathology. Taylor & Francis, pp37-55.
  • D'Arcy, C.J.; Domier, L.L.; Torrance, L. (1999) Detection and diagnosis of luteoviruses., CABI Publishing, Wallingford.
  • Torrance, L. (1999) Pomoviruses (Pomovirus) 327., In: Webster, R.G. & Granoff, A. (eds.). Encyclopaedia of Virology. Second Edition, Academic Press, pp1361-1364.
  • Reavy, B.; Arif, M.; Torrance, L. (1998) Early detection of the fungus-transmitted virus, Potato mop-top virus.., In: Manceau, C. & Spak, J. (eds.). Advances in the Detection of Plant Pathogens by Polymerase Chain Reaction. Proceedings COST 823 Meeting, Ceske Budejovice, Czech Republic 1996, pp17-21.
  • Barker, H.; Torrance, L. (1997) Importance of Biotechnology for Germplasm Health and Quarantine., CAB International
  • Torrance, L. (1997) Developments in serological methods to detect and identify plant viruses., Kluwer Academic Publishers, London.

  • Taliansky, M.E.; Shaw, J.; Torrance, L. (2011) Role of the nucleolus in plant virus pathogenicity., Annual Report of the Scottish Crop Research Institute for 2010, pp42-43.
  • Torrance, L.; Toth, I.K.; Cooke, D.E.L.; Fenton, B.; Blok, V.C.; Lees, A.K. (2010) Risks of new or emerging pests and pathogens posed by environmental change., Annual Report of the Scottish Crop Research Institute for 2009, pp14-17.
  • Torrance, L. (2009) Plant pathology., Annual Report of the Scottish Crop Research Institute for 2008, pp27-31.
  • Torrance, L.; Cowan, G.H.; Haupt, S.; Ziegler, A. (2003) The role of Potato mop-top virus proteins in intracellular movement., Annual Report of the Scottish Crop Research Institute for 2002/2003, pp104-105.
  • Machray, G.C.; Brown, J.W.S.; Oparka, K.J.; Torrance, L. (2002) Mechanisms and Processes., Annual Report of the Scottish Crop Research Institute for 2001/2002, pp101-104.
  • Ziegler, A.; Reavy, B.; Cowan, G.H.; Mayo, M.A.; Torrance, L. (2000) Heterologous expression systems for the production of functional antibody fragments., Annual Report of the Scottish Crop Research Institute for 1998/99, pp139-141.
  • Torrance, L.; Ziegler, A.; Mayo, M.A.; Toth, I.K.; Blok, V.C.; Duncan, J.M. (2000) New technologies for the detection and identification of pathogens, pests and environmental pollutants.., Annual Report of the Scottish Crop Research Institute for 1999/2000, pp51-54.
  • Torrance, L.; Ziegler, A.; Harper, K.; Mayo, M.A. (1998) Engineered antibodies: readily adaptable tools for basic and applied research.., Annual Report of the Scottish Crop Research Institute for 1997/98, pp111-113.
  • Torrance, L.; Robinson, D.J. (1998) Tobacco rattle and potato mop-top viruses: the causes of spraing disease in potato tubers.,

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The James Hutton Research Institute is the result of the merger in April 2011 of MLURI and SCRI. This merger formed a new powerhouse for research into food, land use, and climate change.