CV and Publications

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Liana T Burghardt, Brendan Epstein, Michelle Hoge, Diana Trujillo, Peter Tiffin (2022). Host-Associated Rhizobial Fitness: Dependence on Nitrogen, Density, Community Complexity, and Legume Genotype. Applied Environmental Microbiology. (preprint)

Brendan Epstein, Liana T. Burghardt, Katy D Heath, Mike A. Grillo, Adam Kostanecki, Tuomas Hämälä, Nevin D. Young, and Peter Tiffin (2022), Combining GWAS and population genomic analyses to characterize coevolution in a legume-rhizobia symbiosis. Molecular Ecology. (

Rebecca T. Batstone, Liana T. Burghardt, Katy D. Heath. 2022. Phenotypic and genomic signatures of interspecies cooperation and conflict in naturally-occurring isolates of a model plant symbiont. accepted Proceedings of the Royal Society B (preprint)


Mannix Burns*, Brendan Epstein, Liana T. Burghardt. Comparison of Nodule Endophyte Composition, Diversity, and Gene Content Between Medicago truncatula Genotypes. Phytobiomes Journal 5 (4), 400-407 ( *Undergraduate researcher


Liana T. Burghardt*, D. Trujillo* B. Epstein, P. Tiffin, and N. D. Young. Select and resequence screening reveals rhizobia strain-specific effects of nodule-specific PLAT domain genes in Medicago truncatula. Plant Physiology (doi: 10.1104/pp.19.00831) *equal contribution

Amanda Gorton, Liana T. Burghardt, & P. Tiffin. 2020. Adaptive evolution of plant life history in urban environments. Urban Evolutionary Biology. Eds. M. Szulkin, J. Munshi-South, & A. Charmantier (bookexcerpt)


Liana T. Burghardt, Brendan Epstein, P. Tiffin. 2019. Legacy effect of prior host genotype and soil selection on rhizobial mutualist fitness in planta. Evolution (early view, pdf)

Liana T. Burghardt. Evolving together, evolving apart: Measuring the fitness of rhizobial bacteria in and out of symbiosis with leguminous plants. 2019. New Phytologist. Tansley Insight (onlinepdf) *Tansley medal winner

J. Tomasek, Liana T. Burghardt, and R. K. Shriver. Filling in the gaps in survival analysis: inferring time-varying responses to the environment from interval-censored field data. Ecology (open access)


Liana T. Burghardt, B. Epstein, J. Guhlin, M. Nelson, M. Sadowsky and P. Tiffin. 2018. Select and resequence reveals relative fitness of bacteria in symbiotic and free-living environments. Proceedings of the National Academy of Sciencesdoi: 10.1073/pnas.1714246115 (pdf)

B. Epstein, R, Abou-Shanab, A. Shameldsin, M. Taylor, J. Guhlin, Liana. T. Burghardt, M. Nelson, M. Sadowsky, and Peter Tiffin. Genome-wide association analyses in the model rhizobium Ensifer meliloti. mSphere. doi: 10.1128/mSphere.00386-18 (pdf)


Liana T. Burghardt, J. Guhlin, P. Zhou, J. Liu, R. Stupar, N. D. Young, P. Tiffin. 2017. Transcriptomic basis of genome by genome variation in a legume-rhizobia mutualism. Molecular Ecology. doi: 10.1111/mec.14285 (pdf) *Highlighted in a Perspective

B. Edwards, Liana T. Burghardt, K. Kovach, and K. Donohue. 2017. Canalization of seasonal phenology in the presence of developmental variation: Seed dormancy cycling in an annual weed. Integrative and Comparative Biology doi: 10.1093/icb/icx065 (Special Issue: Evolutionary Impacts of Seasonality) (pdf)

Liana T. Burghardt, Nevin D. Young, P. Tiffin (2017). A guide to genome-wide association studies (GWAS) in plants. Current Protocols in Plant Biology 2:22-38. doi: 10.1002/cppb.20041

S. J. Curtin, P. Tiffin, J. Guhlin, P. Atkins, N. J. Baltes, Liana T. Burghardt, R. Denny, D. F. Voytas, R. M. Stupar, and N. D. Young (2017). Validating genome-wide association candidates: selecting, testing, and characterizing genes that control quantitative variation in rhizobial nodulation. Plant PhysiologyDOI:10.1104/pp.16.01923 (pdf)

Liana T. Burghardt and C. J. E. Metcalf. 2017. The evolution of senescence in annual plants: the importance of phenology and the potential for plasticity. The Evolution of Senescence across the Tree of Life. Eds: R. P. Shefferson, O. Jones, R. Salguero-Gómez. (preprint)

Waters, I. Makarevitch, J. Noshay, Liana T. Burghardt, C. Hirsch, C. Hirsch, and N. Springer. (2017). Natural variation for regulation of gene expression responses to abiotic stress in maize. The Plant Journal. 89:707-717. doi: 10.1111/tpj.13414 (pdf)


Liana T. Burghardt, D. E. Runcie, A. M. Wilczek, M. D. Cooper, J. L. Roe, S. M. Welch, and J. Schmitt. 2016. Fluctuating, warm temperatures decrease the effect of a key floral repressor on flowering time in Arabidopsis thaliana. New Phytologist 210: 564–576 doi: 10.1111/nph.13799 (pdf)

Liana T. Burghardt, C. J. E. Metcalf, and K. Donohue. 2016. A cline in seed dormancy helps conserve the environment experienced during reproduction across the range of A. thaliana. American Journal of Botany 103: 47-59 (preprintpublished version).

Liana T. Burghardt, B. Edwards, and K. Donohue. 2016. Multiple paths to similar germination behavior in Arabidopsis thalianaNew Phytologist 209: 1301–1312. doi: 10.1111/nph.13685 (pdf)

Edwards B. R., L. T. Burghardt, M. Zapata-Garcia, and K. Donohue. 2016. Maternal temperature effects on dormancy influence germination responses to water availability in Arabidopsis thalianaEnvironmental and Experimental Botany 126: 55-67. doi: 10.1016/j.envexpbot.2016.02.011


C. Jessica E. Metcalf, Liana T. Burghardt, and David Koons. Avoiding the crowds: the evolution of plastic responses to seasonal cues in a density dependent world. 2015. Journal of Ecology 103:819-828. (link) (pdf) (FigS1) (Rcode)

Gabriela A. Auge, Logan K. Blair, Liana T. Burghardt, Jennifer Coughlan, Brianne Edwards, Lindsay D. Leverett and Kathleen Donohue. 2015. Secondary dormancy induction depends on primary dormancy status in Arabidopsis thaliana. Seed Science Researchdoi:10.1017/S0960258514000440 (pdf)

Kathleen Donohue, Liana T. Burghardt, Daniel Runcie, Kent J. Bradford, and Johanna Schmitt. 2015. Applying developmental threshold models to evolutionary ecology. Trends in Ecology and Evolution. Vol 30 Issue 2 66-77 (link) (pdf)

Liana T. Burghardt, C. Jessica E. Metcalf, Amity Wilczek, Johanna Schmitt, and Kathleen Donohue. 2015. Modeling the influence of genetic and environmental variation on the expression of plant life cycles across landscapes. American Naturalist. Vol 185, 212-227. (link) (pdf) (AppendixA) (AppendixB)


Chunhui Zhang, Charles Willis, Liana T. Burghardt, Wei Qi, Kun Liu, Paulo Filho, Zhen Ma, and Guozhen Du. 2014. The community-level effect of light on germination timing in relation to seed mass: a source of regeneration niche differentiation. New Phytologist. Vol 204, Issue 3 496-506 (link) (pdf)

C. G. Willis, C.C Baskin, J.M Baskin, J.R Auld, D.L Venable, C, J. Cavender-Bares, K. Donohue, Casas, K. Bradford, L. T. Burghardt, S. Kalisz, S. Meyer, J. Schmitt, S. Strauss, and A. Wilczek. 2014. The evolution of seed dormancy: Environmental cues, evolutionary hubs, and diversification of the seed plants. New Phytologist
 203: 300 -309.


Kathleen Donohue, Rafael Rubio de Casas, Liana T. Burghardt, Katherine Kovach, and Charles G. Willis. 2010. Germination, post-germination adaptation, and species ecological ranges.  Annual Review of Ecology and Systematics. Vol 41 293-319. (link) (pdf)

Amity Wilczek, Liana T. Burghardt, Alex R. Cobb, Martha D. Cooper, Stephen M. Welch, Johanna Schmitt. 2010. Genetic and physiological bases for phenological responses to current and predicted climates. Philosophical Transactions of the Royal Society B-Biological Sciences. Vol 365, Issue 1555 3129-3147. (link) (pdf)