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Yoder, J. and P Tiffin. 2017. Effects of gene action, time since selection, and marker density on the performance of landscape genomic scans of local adaptationJournal of Heredity Special Issue on Local Adaptation

Zhou, P, KAT Silverstein, T Ramaraj, J Guhlin, RL Denny, J Liu, AD Farmer, KP Steele, RM Stupar, JR Miller, P Tiffin, J Mudge, ND Young. 2017. Exploring structural variation and gene family architecture with de novo assemblies of 15 Medicago Genomes. BMC Genomics: 18: 261.

Curtin, SF,  P. Tiffin, J. Guhlin, DI Truhillo, LT Burghardt, P Atkins, NJ Baltes, R Denny DF Vortas RM Stupar, ND Young. 2017.  Validating Genome-Wide Association candidates through quantitative variation in nodulation. Plant Physiology. 173: 921-931.  doi: http:/​/​dx.​doi.​org/​10.​1104/​pp.​16.​01923

Burghardt LT, ND Young, P Tiffin. 2017. A Guide to Genome-Wide Association Mapping in PlantsCurrent Protocols in Plant Biology. 2: 22-38.  doi: 10.1002/cppb.20041

Yakub, M. and P. Tiffin.  2016. Living in the city: urban environments shape the evolution of a native annual plant. Global Change Biology. 23: 2082-2089. doi: 10.1111/gcb.13528



Kono, TJY., F. Fengli, M Mohammadi, PJ Hoffman, C Liu, RM Stupar, KP Smith, P Tiffin, JC Fay, PL Morrell. 2016. The role of deleterious substitutions in crop genomes. Mol. Biol. and Evol. 33: 2307-2317.

Burgarella, C., N. Chantret N., L. Gay, J-M Prosperi, M Bonhomme, P Tiffin, ND Young, and J Ronfort. 2016. Adaptation to climate through flowering phenology: a case study in Medicago truncatula. Molecular Ecology, 25: 3397-3415.



Balint, M., L. Barthe, R. O’Hara, M.S. Olson, U. Otte, R. Robertson, P. Tiffin, and I. Schmitt. 2015. Relocation, high-latitude warming and host genetic identity shape the foliar fungal microbiome of poplars. Molecular Ecology. 24: 235-248.



Tiffin, P. and J. Ross-Ibarra. 2014. Advances and limits of using population genetics to understand local adaptation.  Trends in Ecology & Evolution 29: 673-680.

Bao, Y., T. Vuong, C. Meinhardt, P. Tiffin, R. Denny, S. Chen, H. T. Nguyen, J. H. Orf, and N. D. Young. 2014. Association mapping and genomic selection for soybean cyst nematode resistance. The Plant Genome Vol 7 No. 3   doi:10.3835/plantgenome2013.11.0039

Yoder JB, J Stanton-Geddes, P Zhou, R Briskine, ND Young, and P Tiffin. 2014. Genomic signature of adaptation to climate in Medicago truncatula. Genetics 196: 1263-1275.

Epstein, B, MJ Sadowsky, P Tiffin. 2014. Selection on horizontally transferred and duplicated genes in Sinorhizobium (Ensifer), the root-nodule symbionts of Medicago. Genome Biology and Evolution 6: 1199-1209.

Wang, L. P. Tiffin, and M. S. Olson. 2014.  Timing for success: expression phenotype and local adaptation related to latitude in the boreal forest tree, Populus balsamiferaTree Genetics & Genomes 10:911-922          DOI  10.1007/s11295-014-0731-3

Bonhomme, M, O,. Andre, Y.Badis, J. Ronfort, C. Burgarella, N. Chantret, J-M Prosperi, R. Briskine, J. Mudge, F. Debelle, H. Havier, A. Hajri, A. Baranger, P. Tiffin, B. Dumans, M-L Pilet-Nayel, N.D.Young, C. Jacquet. 2014. High-density genome-wide association mapping identifies and F-box protein as the likely major component of Medicago truncatula resistance to Aphanomyces euteiches. New Phytologist 201: 1328-1342.

Gould, B, D.A. Moeller, VV.M. Eckhart, P.Tiffin, E. Fabio, and M.A. Geber. in press. Range-wide adaptive trait differentiation in Clarkia xantiana ssp. xantiana inferred from quantitative and population genetic analyses. Journal of Ecology 102: 95-107.

Lau, J.A., R.G. Shaw, P.B. Reich, and P. Tiffin. 2014. Indirect effects drive evolutionary responses to global change. New Phytologist 201: 335-343.


Stanton-Geddes, J. J.B. Yoder, R. Briskine, N.D. Young, and P. Tiffin. 2013. Estimating heritability using genomic dataMethods in Ecology and Evolution 4: 1151-1158.

Eichten, S.R. R. Briskine, J. Song, Q. Li, R. Swanson-Wagner, P.J. Hermanson, A.J. Waters, E. Starr, P.T. West, P.Tiffin, C. L. Myers, M.W. Vaughn, and N.M. Springer. 2013. Epigenetic and genetic influences on DNA methylation variation in maize populations. The Plant Cell 25: 2783-2797

Paape, T., T. Bataillon, P. Zhou, T. Kono, R. Briskine, N. Young, and P. Tiffin. 2013. Selection and genomic correlations of rate evolution in the model legume Medicago truncatula. Molecular Ecology 22: 3525-3538  DOI: 10.1111/mec.12329

Stanton-Geddes, J., T. Paape, B. Epstein, R. Briskine, J. Yoder, J. Mudge, A. K. Bharti, A. D. Farmer, P. Zhou, R. Denny, G. D. May, S. Erlandson, M. Yakub, M. Sugawara, M. J. Sadowsky, N. D. Young, P. Tiffin. 2013. Candidate genes and genetic architecture of symbiotic and agronomic traits revealed by wholegenome, sequence-based association genetics in Medicago truncatula.  PLoS ONE 8(5): e65688. doi:10.1371/journal.pone.0065688

Sugawaraa, M., B. Epstein, B. Badgley, T. Unnoa, L. Xua, J. Reese, P. Gyaneshwar, R. Denny, J. Mudge, A. K. Bharti, A. D. Farmer, G. D. May, J. E. Woodward, C. Médigue, D. Vallenet, A. Lajus, Z. Rouy, B. Martinez-Vaz, P. Tiffin, N. D. Young, and M. J. Sadowsky.  2013.  Comparative genomics of the core and accessory genomes of 48 sinorhizobium strains spanning five genospecies.  Genome Biology doi:10.1186/gb-2013-14-2-r17 

Stanton-Geddes, J., R.G. Shaw, and P. Tiffin. 2013. Insights from population genetics for range limits of a widely-distributed annual plant. American Journal of Botany 100: 744-753

Yoder J. B., R. Briskine, J. Mudge, A. Farmer, T. Paape, K. Steele, G. D. Weiblen, A. K. Bharti, P. Zhou,G. D. May, N. Young, and P. Tiffin. 2013. Whole-genome phylogeny of Medicago (Fabaceae). Systematic Biology 62: 424-438. doi:10.1093/sysbio/syt009

Balint, M., P. Tiffin, B. Hallstrom, R.B. Ohara, M.S. Olson, J.D. Fankhauser, M. Piepenbring, and I. Schmitt.  2013. Host genotype shapes the foliar fungal microbiome of Balsam poplar. PLoS ONE 8(1): e53987. doi:10.1371/journal.pone.0053987

Olson, M.S., N. Levsen, R. Soolanayakanahally, R. Guy, W. Schroeder, S. Keller, and P. Tiffin.2013.The adaptive potential of the dominant boreal forest tree Populus balsamifera L. to phenology requirements in a warmer global climate. Molecular Ecology 22: 1214-1230 DOI: 10.1111/mec.12067 


Swanson-Wagner, R.A., R. Briskane, R. Schaefer, M. B. Hufford, J. Rossi-Ibarra, C. L. Myers, P. Tiffin, and N. M. Springer. 2012. Reshaping of the maize transcriptome by domestication. Proc. Nat. Acad. Sci. 109: 11878-11883 

Epstein, B.., A. Branca, J. Mudge, A. K. Bharti, R. Briskine, A. Farmer, M. Sugawara, N. D. Young, M. J. Sadowsky, and P. Tiffin. 2012. Population genomic evidence for widespread selection on symbiosis genes in the facultatively mutualistic rhizobia Sinorhizobium meliloti and S. medicae. PLoS Genetics 8(8): e1002868  

Stanton-Geddes, J., R. Shaw, and  P. Tiffin. 2012 Interactions between soil habitat and geographic range location on plant fitness. PLoS One 7: e36015.

Paape, T., P. Zhou, A. Branca, R. Briskine, N. Young, and P. Tiffin. 2012. Fine scalepopulation recombination rates, hotspots and correlates of recombination in the Medicago truncatula genome. Genome Biol. and Evol. 4: 726-73.

Moeller, D. A., M. A. Geber, V. M. Eckhart and P. Tiffin. 2012. Reduced pollinator service and elevated pollen limitation at the geographic range limit of an annual plant. Ecology 93: 1036-1048.  Editor’s Choice in Science (vol 336, June, 2012). 

Keller, S. R., N. Levsen, M. S. Olson, and P. Tiffin, 2012. Local adaptation in the flowering time gene network of balsam poplar, Populus balsamifera L. Molecular Biology and Evolution 29: 3143-3152 

Stanton-Geddes, J., P. Tiffin and R. Shaw. 2012. Role of climate and competitors in limiting fitness across range edges of an annual plant. Ecology 93:1604-1613

Hufford, M. B., X. Xu, J. van Heerwaarden, T. Pyhäjärvi, JM. Chia, R. A. Cartwright, R. J. Elshire, J. C. Glaubitz, K.E. Guill, S. M. Kaeppler, J. Lai, P. L. Morrell, L. M. Shannon, C. Song, N. M. Springer, R. A. Swanson-Wagner, P. Tiffin, J. Wang, G. Zhang, J. Doebley, M. D. McMullen, D. Ware, E. S. Buckler, S. Yang, J. Ross-Ibarra. 2012. Population genomics of domestication and improvement in maize. Nature Genetics 44:808-811 doi.10.1038/ng.2309

Levsen, N., P. Tiffin, and M.Olson. 2012 Pleistocene speciation in the genus Populus (Salicaceae). Systematic Biology 61: 401-412.


Branca, A., T. D. Paape, P. Zhou, R. Briskine, A. D. Farmer, J. Mudge, A. K. Bharti, J. E. Woodward, G. D. May, L. Gentzbittel, C. Ben, R. Denny, M .J. Sadowsky, J. Ronfort, T. Bataillon, N. D. Young, and P. Tiffin. 2011. PNAS Plus: Whole-genome nucleotide diversity, recombination, and linkage disequilibrium in the model legume Medicago truncatula.  Proc. Nat. Acad. Sci.  108:E864–E870. 

Moeller, D. A., M. Geber, and P. Tiffin. 2011. Population genetics and the evolution of geographic range limits in an annual plant. American Naturalist 178: S44-S61. 

V. M. Eckhart, M. A. Geber, W. F. Morris, E. S. Fabio, P. Tiffin, and D. A. Moeller. 2011.  The geography of demography: Long-term demographic studies and species distribution models reveal a species border limited by adaptation. American Naturalist. 178: S26-S43

S. R. Keller, M.S. Olson, N. Levsen, and P. Tiffin. 2011. Local selection across a latitudinal gradient shapes nucleotide diversity in Balsm Poplar Populus balsamifera L..  Genetics 188: 941-52.

S. R. Keller, R. Soolanayakanahally, R. Guy, S. Silim, M. Olson, and P. Tiffin. 2011 Climate-driven local adaptation in ecophysiology and phenology in balsam poplar, Populus balsamifera (Salicaceae). American Journal of Botany 98:99-108. 


Swanson-Wagner, R.A., S.R. Eichten, S. Kumari, P. Tiffin, J.C., Stein, D. Ware, and N.M. Springer. 2010. Pervasive gene content variation and copy number variation in both maize and its undomesticated progenitor.  Genome Research 20: 1689-1699. link.

J. Lau, R.G. Shaw, P.B. Reich, and P. Tiffin. 2010. Species interactions in a changing environment: elevated CO2 alters the ecological and potential evolutionary consequences of competition. Evolutionary Ecology Research 12: 435-455.

Powers, J.S., and P. Tiffin. 2010. Plant functional type classifications in tropical dry forests in Costa Rica: leaf habit versus taxonomic approaches. Functional Ecology 24: 927-936.

Olson, MS, A. L. Roberson, N. Takebayashi, S. Silim, W. R. Schroeder, P. Tiffin. 2010 Nucleotide diversity and linkage disequilibirium in Balsam poplar (Populus balsamifera). New Phytologist 186: 526-536.

Keller S. R., M. S. Olson, S. Silim, W. Schroeder, P. Tiffin. 2010 Population structure and migration following rapid range expansion in the balsam poplar, Populus balsamifera. Molecular Ecology 19:1212-1226. Featured in a perspective


Flint-Garcia, SA, Buckler, ES, P. Tiffin, E. Ersoz, NM. Springer 2009. Heterosis is prevalent for multiple traits in diverse maize germplasm. PLOS One: 4:e7433 pdf

Lau, J. A. and P. Tiffin. 2009. Elevated carbon dioxide concentrations indirectly affect plant fitness by altering plant tolerance to herbivory. Oecologia, 161: 401-410 pdf

Neiman, M. M. S. Olson, and P. Tiffin. 2009. Selective histories of poplar protease inhibitors: elevated polymorphism, purifying selection, and positive selection driving divergence of recent duplicates. New Phytologist.183: 740 - 750. pdf

Heath, K. D. and P. Tiffin. 2009. Stabilizing mechanisms in a legume-rhizobium mutualism. Evolution 63: 652 - 662. pdf


Moeller, D. A. and P. Tiffin. 2008. Geographic variation in adaptation at the molecular level: A case study of plant immunity genes. Evolution 62: 3069- 3081. pdf

Lau, J. A., J. Peiffer, P. B. Reich, and P. Tiffin. 2008. Transgenerational effects of global environmental change: Long-term CO2 and nitrogen treatments influence offspring growth response to elevated CO2. Oecologia, 158:141-150. pdf

Tenaillon, M. I., and P. Tiffin. 2008. The quest for adaptive evolution: a theoretical challenge in a maze of data. Current Opinion in Plant Biology, 11: 110-115. pdf

Strauss, S. Y., J. A. Lau, T. W. Schoener, and P. Tiffin. 2008. Evolution in ecological field experiments: implications for effect size.Ecology Letters 11: 199-207


Lau, J. A., J. Strengbom, L. R. Stone, P. B. Reich, and P. Tiffin. 2007. Direct and indirect effects of CO2 enrichment, N fertilization, and community diversity on plant-enemy interactions. Ecology 89:226-236. pdf.

Moeller, D. A., M. I. Tenaillon, and P. Tiffin. 2007. Population structure and its effects on patterns of nucleotide polymorphism in teosinte (Zea mays ssp. parviglumis). Genetics 176: 1799-1809. pdf.

Lau, J., R. G. Shaw, P. B. Reich, F. H. Shaw, and P. Tiffin. 2007. Strong ecological but weak evolutionary effects of elevated atmospheric CO2 has little effect on the evolution of ecologically important traits in Arabidopsis thaliana. New Phytologist 175: 351-362. pdf.

Heath, K. and P. Tiffin. 2007. Context dependence in the coevolution of plant and rhizobial mutualists. Proc. of the Royal Society B. 274: 1905-1912. pdf.

Brock, M. T., P. Tiffin, and C. Weinig. 2007. Sequence diversity and haplotype associations with phenotypic responses to crowding:GIGANTEA affects fruit set in Arabidopsis thaliana. Molecular Ecology 16: 3050-3062. pdf.

Perovic D., P. Tiffin, D. Douchkov, H. Bumlein, and A. Graner. 2007. An integrated approach for the comparative analysis of a multigene family: The nicotianamine synthase genes of barley. Functional and Integrative Genomics 7, 169-179. pdf


Tiffin, P. and D. A. Moeller. 2006. The molecular evolution of plant immune system genes. Trends in Genetics 22: 662-670. pdf.

Tiffin, P, B. D. Inouye, and N. C. Underwood. 2006. Induction and herbivore mobility affect the evolution of plant defense and herbivore counter defense. Evolutionary Ecology Research 8: 265-277


Moeller, D. A. and P. Tiffin. 2005. Genetic diversity and the evolutionary history of plant immunity genes in two species of Zea. Molecular Biology and Evolution. 22: 2480-2490. pdf.

Tiffin, P, R. Hacker, and B. S. Gaut. 2004. Population genetic evidence for rapid changes in intra-specific diversity and allelic cycling of defense genes in Zea. Genetic 168: 425-434. pdf

Tiffin, P. 2004. Comparative evolutionary histories of chitinase genes in the genus Zea and family Poaceae. Genetics 167: 1331-1340. pdf

Moyle, L. C., M. S. Olson, and P. Tiffin. 2004 Patterns of reproductive isolation in three Angiosperm genera. Evolution 58: 1195-1208. pdf

Inouye, B. D. and P. Tiffin. 2003. Measuring tolerance to herbivory with natural or imposed damage: a reply to Lehtil. Evolution 57: 681-682.

Stinchcombe, J. R., M. T. Rutter, D. S. Burdick, P. Tiffin, M. D. Rausher, and R. Mauricio. 2002. Testing for environmentally induced bias in phenotypic estimates of natural selection: Theory and practice. The American Naturalist 160: 511-523. pdf

Tiffin, P. and M. Hahn. 2002. Coding sequence divergence between two closely related plant species: Arabidopsis thaliana and Brassica rapa ssp. perkinenses. Journal of Molecular Evolution 54: 746-753. pdf

Tiffin, P. 2002. Competition and time of damage affect the pattern of selection acting on plant defense against herbivores. Ecology 87: 1981-1990. pdf

Tiffin, P. and B. S. Gaut. 2001. Molecular evolution of the wound induced serine protease inhibitor wip1 in Zea and related taxa. Molecular Biology and Evolution 18:2092-2101. pdf

Tiffin, P. and B. S. Gaut. 2001. Sequence diversity in the autotetraploid Zea perennis and the closely related diploid Z. diploperennis: insights from four nuclear loci. Genetics 158: 401- 412. pdf

Tiffin, P., M. S. Olson, and L. C. Moyle. 2001. The genetics of reproductive isolation: asymmetric crossing barriers in Angiosperms. The Proceedings of the Royal Society of London B 268: 861-867. pdf

1998 - 2000

Tiffin, P. 2000. Mechanisms of tolerance to herbivore damage: What do we know? Evolutionary Ecology 14: 523-536. pdf

Tiffin, P. and B. D. Inouye. 2000. Measuring tolerance to herbivory: accuracy and precision of estimates made using natural versus imposed damage. Evolution 54: 1024-1029. pdf

Tiffin, P. 2000. Are tolerance, avoidance and antibiosis evolutionarily and ecologically equivalent responses of plants to herbivores? The American Naturalist 155:128-138. pdf

Tiffin, P. and M. D. Rausher. 1999. Genetic constraints and selection acting on tolerance to herbivory in the common morning glory, Ipomoea purpurea. The American Naturalist 154: 700-716. pdf

Rausher, M. D., R. E. Miller, and P. Tiffin. 1999. Patterns of evolutionary rate variation among genes of the anthocyanin biosynthetic pathway. Molecular Biology and Evolution 16: 266-274. pdf

Tiffin, P., R.E. Miller, and M. D. Rausher. 1998. Control of expression patterns of anthocyanin structural genes by two loci in the common morning glory. Genes and Genetic Systems 73:105-110. pdf

Tiffin, P. and O.B. Hesterman. 1998. Response of corn grain yield to early and late killed red clover green manure and subirrigation. Journal of Production Agriculture 11:112-121.


Peter Tiffin
612 624-7406

Dept. of Plant and Microbial Biology
Univ. of Minnesota
250 Biosciences
St. Paul, MN 55108

Graduate Faculty:
Ecology, Evolution, and Behavior, and Plant and Microbial Biology