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Clarkson, James J.

Photo of Jim Clarkson
Job title: 

Jodrell Keeper's Research Assistant

Jodrell Laboratory
Keeper's Group
Joined Kew: 


Qualifications and appointments: 
  • BSc (Hons), De Montfort University, 1998
  • PhD, Queen Mary University of London, 2006
  • Awarded Linnean Society’s Manton prize for best PhD thesis in plant sciences during 2006
  • Awarded Menzel prize for oral presentation at Botany 2010 conference (Providence, USA)

Interested in evolution at the DNA sequence level. Specifically the consequences of polyploidy in Nicotiana and plant DNA barcoding.

Reconstructing the phylogenetic relationships of plant species based on DNA sequence data. Involved in many collaborative projects in Kew’s Molecular Systematics Laboratory. Special interest in understanding the genetic consequences of polyploidy in Nicotiana over different timeframes. Investigate processes such as reticulate evolution, allopolyploid speciation, homoploid hybrid speciation, recombination and diploidisation. Recently became involved in the large international collaborative effort to test and select suitable regions for the DNA barcoding of land plants. Also work closely with specialists in Kew’s Herbarium collaborating on projects for specific plant families (recently focused on Arecaceae and Meliaceae).

Selected publications: 

Clarkson, J.J., Pennington, T.D., Haynes, G., Engstrand, R., Kaye, M. & Chase, M.W. (2013). A phylogenetic analysis of Guarea In: A revision of Guarea (Meliaceae), T. D. Pennington & J. J. Clarkson (eds). pp. 180-189. Cambridge University Press.

Landrein, S., Prenner, G., Chase, M.W. & Clarkson, J.J. (2012). Abelia and relatives: phylogenetics of Linnaeeae (Dipsacales-Caprifoliaceae s.l.) and a new interpretation of their inflorescence morphology. Botanical Journal of the Linnnean Society 169: 692-713.

Parisod, C., Mhiri, C., Lim, K. Y., Clarkson, J.J., Chase, M.W., Leitch, A. R. & Grandbastien, M.A. (2012). Differential dynamics of transposable elements during long-term diploidization of Nicotiana section Repandae (Solanaceae) allopolyploid genomes. PLOS ONE: DOI 10.1371.

Clarkson, J.J., Kelly, L.J., Leitch, A.R., Knapp, S. & Chase, M.W. (2010). Nuclear glutamine synthetase evolution in Nicotiana: phylogenetics and the origins of allotetraploid and homoploid (diploid) hybrids. Molecular Phylogenetics & Evolution 55: 99-112.

Clarkson, J.J., Lim, K.Y., Kovarik, A., Knapp, S., Chase, M. & Leitch, A. (2005) Long-term genome diploidization in allopolyploid Nicotiana section Repandae (Solanaceae). New Phytologist 168: 241-252.