Stacey Thompson

Contact Information


Assistant professor


Works at:

Ecology and Environmental Sciences


Umeå universitet
SE-901 87 Umeå

Visiting Address:

KBC-huset, plan 5, Linnaeus väg 6, Umeå, A5-50-21


+46 90 786 66 37


stacey.thompson@emg.umu.seEmail 1

stacey.thompson@umu.seEmail 2


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We investigate the causes and consequences of gene exchange in forest trees and other plants. Specifically, we identify the factors that permit migrating genes to successfully establish in new environments and new genetic backgrounds, and determine the impact that these migrant genes have on resident populations. Our research addresses major unresolved questions related to adaptation, speciation, and hybridization, with important implications for applied problems and policy decisions (spread of exotic species, escape of crop genes into the wild, potential impacts of genetically-modified organisms). In practical terms, our program relies upon techniques in high-throughput biology, combining molecular marker development via genomic sequencing, SNP assay and genotyping-by-sequencing approaches, population genetic modeling and computer simulations, plus other evolutionary and environmental analyses.

New projects in the pipeline include:

(1) Genome-scale analyses of hybridization between Populus trichocarpa and P. fremontii

(2) Evaluation of gene flow between exotic species and native forest stands: an alternative method for assessing impacts of genetically-modified trees (North American P. tremuloides and hybrid aspen with native P. tremula)

(3) Broad-scale admixture and adaptation of Norway spruce

(4) Next-generation sequencing approaches to assess genomic diversity and connectivity of managed spruce stands (RAD sequencing, sequence capture approaches)

(5) Hybridization between the ploidy-variable Salix species of Sweden

As a scientist, I promote a data-driven approach to policy.




Year sorteringsordning


Nystedt, Bjorn
Street, Nathaniel Robert
Wetterbom, Anna; et al.

The Norway spruce genome sequence and conifer genome evolution
Nature, 497(7451): 579-584



Isabel, Nathalie
Lamothe, Manuel
Thompson, Stacey Lee

A second-generation diagnostic single nucleotide polymorphism (SNP)-based assay, optimized to distinguish among eight poplar (Populus L.) species and their early hybrids
Tree Genetics & Genomes, 9(2): 621-626



Talbot, Patricia
Thompson, Stacey Lee
Schroeder, William; et al.

An efficient single nucleotide polymorphism assay to diagnose the genomic identity of poplar species and hybrids on the Canadian prairies
Canadian Journal of Forest Research, 41(5): 1102-1111



Thompson, Stacey Lee
Lamothe, Manuel
Meirmans, Patrick G; et al.

Repeated unidirectional introgression towards Populus balsamifera in contact zones of exotic and native poplars.
Molecular Ecology, 19(1): 132-145



Thompson, Stacey Lee
Choe, Gina
Ritland, Kermit; et al.

Cryptic sex within male-sterile polyploid populations of the Easter daisy, Townsendia hookeri
International journal of plant sciences, 169(1): 183-193



O'Connell, Lisa M.
Ritland, Kermit
Thompson, Stacey Lee

Patterns of post-glacial colonization by western redcedar (Thuja plicata, Cupressaceae) as revealed by microsatellite markers
Botany - Botanique: 194-203



Thompson, Stacey Lee
Bérubé, Yanik
Bruneau, Anne; et al.

Three-gene identity coefficients demonstrate that clonal reproduction promotes inbreeding and spatial relatedness in yellow-cedar, Callitropsis nootkatensis
Evolution, 62(10): 2570-2579



Thompson, Stacey Lee

A simple procedure for joint estimation of the long-term rates of sexuality and mutation in predominantly clonal populations, for use with dominant molecular markers
Molecular Ecology Notes, 7(4): 567-569



Thompson, Stacey Lee
Whitton, Jeannette

Patterns of recurrent evolution and geographic parthenogenesis within apomictic polyploid Easter daises (Townsendia hookeri).
Molecular Ecology, 15(11): 3389-3400



Thompson, Stacey Lee
Ritland, Kermit

A novel mating system analysis for modes of self-oriented mating applied to diploid and polyploid arctic Easter daisies (Townsendia hookeri).
Heredity, 97(2): 119-126



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Research area

Evolutionary biology