Thomas M Davis, Ph.D.

Thomas M Davis, Ph.D.


Description of Current Research:

My research is concerned with the genetic analysis and manipulation of economically important plants, with current emphasis on strawberry, quinoa, and some other cultivated and weedy species. We are using a combination of conventional, molecular, and cytogenetic techniques to construct strawberry genome maps, to compare genome structures among strawberry (Fragaria) species, and to trace the evolutionary history of the strawberry. The development of new types of molecular markers useful for plant genome mapping and phylogenetic investigations is also an important focus. We are assembling locally adapted germplasm from the genus Chenopodium as a foundation for a genomic project relevant to the re-domestication of quinoa. Finally, we are identifying, cloning, and characterizing genes for economically important traits such as disease resistance, flowering habit, and others.

Representative Publications:

Shulaev et al. (68 authors, T.M. Davis, contributing author) 2011. The Genome of the Woodland Strawberry (Fragaria vesca). Nature Genetics 43:109-116. Published online 26 December 2010; doi:10.1038/ng.740.

Njuguna W, Hummer KE, Richards CM, Davis TM, Bassil NV. 2011. Genetic Diversity of Diploid Japanese Strawberry Species Based on Microsatellite Markers. Genet Resour Crop Evol. Published online January 21, 2011. DOI 10.1007/s10722-010-9652-7.

Liu B and Davis TM. 2011. Conservation and Loss of Ribosomal RNA Gene Sites in Diploid and Polyploid Fragaria (Rosaceae). BMC Plant Biology 11:157-169. doi:10.1186/1471-2229-11-157.

Zhang Q, Folta KM, and Davis TM. 2014. Somatic embryogenesis, tetraploidy, and variant leaf morphology in transgenic diploid strawberry (Fragaria vesca subspecies vesca 'Hawaii 4'). BMC Plant Biology, 14:23.

DiMeglio LM, Staudt G, Yu H, Davis TM. 2014. A Phylogenetic Analysis of the Genus Fragaria (Strawberry) Using Intron-Containing Sequence from the ADH-1 Gene. PLoS ONE 9(7): e102237.

Bassil NV, Davis TM, Zhang H, Ficklin S, Mittmann M, Webster T, Lise Mahoney L, Wood D, Alperin ES, Rosyara UR, Koehorst-van Putten H, Monfort A, Sargent DJ, Amaya I, Denoyes B, Bianco L, van Dijk T, Pirani A, Iezzoni A, Main D, Peace C, Yang Y, Whitaker V, Verma S, Bellon L, Brew F, Herrera R, van de Weg E. 2015. Development and preliminary evaluation of a 90K Axiom® SNP array for the allo-octoploid cultivated strawberry Fragaria ×ananassa. BMC Genomics. 03/2015; 16(1):155. DOI: 10.1186/s12864-015-1310-1.

Vining KJ, Davis TM, Jamieson AR, Mahoney LL. 2015. Verticillium wilt resistance varies within ploidy levels in strawberry (Fragaria spp.). Journal of Berry Research. DOI: 10.3233/JBR-150096.

Sargent DJ, Yang Y, Surbanovski N, Bianco L, Buti M, Velasco R, Giongo L, Davis TM. 2016.  HaploSNP affinities and linkage map positions illuminate subgenome composition in the octoploid, cultivated strawberry (Fragaria x ananassa). Plant Science 242: 140-150. Published online July 10, 2015.

Liu B, Poulsen EG, Davis TM. 2016. Insight into octoploid strawberry (Fragaria) subgenome composition revealed by GISH analysis of pentaploid hybrids. Genome 59(2): 79-86, 10.1139/gen-2015-0116.

Mahoney, LL, DJ Sargent, F Abebe-Akele, DJ Wood, JA Ward, NV Bassil, JF Hancock, KM Folta and TM Davis. 2016. A high density linkage map of the ancestral diploid strawberry, F. iinumae, using SNP markers from the IStraw90 Array and GBS. The Plant Genome 9(2):1-14. doi:10.3835/plantgenome2015.08.0071.

Smith RG, Birthisel SK, Bosworth SC, Brown B, Davis TM, Gallandt ER, Hazelrigg A, Venturini E, and Warren ND. 2017. Environmental correlates with germinable weed seed banks on organic farms across northern New England. 24 August 2017, pp. 1-16.

Tom Davis
Rudman Hall Rm 104
Durham, NH 03824