Plant Systematics
The lab has a number of ongoing projects on systematics, biogeography, and lineage diversification in various plant groups, such as Euphorbia and the Caryophyllales.
Representative publications:
Yang, Y., C.W. Morden, M.J. Sporck-Koehler, L. Sack, W.L. Wagner, and P.E. Berry. Repeated range expansion and niche shift in a volcanic hotspot archipelago: radiation of C4 Hawaiian Euphorbia (Euphorbiaceae). Ecology and Evolution. doi:10.1002/ece3.4354
Yang, Y., R. Riina, J.J. Morawetz, T. Haevermans, X. Aubriot and P.E. Berry. 2012. Molecular phylogenetics and classification of Euphorbia subgenus Chamaesyce: a group with high diversity in photosynthetic systems and growth forms. Taxon 61(4):764–789
Yang, Y. and P.E. Berry. 2011. Phylogenetics of the Chamaesyce clade (Euphorbia, Euphorbiaceae): reticulate evolution and long-distance dispersal in a prominent C4 lineage. American Journal of Botany 98(9):1486–1503
Yang, Y., C.W. Morden, M.J. Sporck-Koehler, L. Sack, W.L. Wagner, and P.E. Berry. Repeated range expansion and niche shift in a volcanic hotspot archipelago: radiation of C4 Hawaiian Euphorbia (Euphorbiaceae). Ecology and Evolution. doi:10.1002/ece3.4354
Yang, Y., R. Riina, J.J. Morawetz, T. Haevermans, X. Aubriot and P.E. Berry. 2012. Molecular phylogenetics and classification of Euphorbia subgenus Chamaesyce: a group with high diversity in photosynthetic systems and growth forms. Taxon 61(4):764–789
Yang, Y. and P.E. Berry. 2011. Phylogenetics of the Chamaesyce clade (Euphorbia, Euphorbiaceae): reticulate evolution and long-distance dispersal in a prominent C4 lineage. American Journal of Botany 98(9):1486–1503
Functional Phylogenomics
We develope methods for mining genomic and transcriptomic data at the macroevolutionary scale that go beyond "single-copy genes". By doing so now we are able to detect the phylogenetic and functional locations of gene tree discordance, gene and genome duplication, molecular rate heterogeneity, and natural selection at a scale that is never before possible.
Representative publications:
McKain, M.R., M.G. Johnson, S. Uribe‐Convers, D. Eaton, and Y. Yang. 2018. Practical considerations for plant phylogenomics. Applications in Plant Sciences 6(3): e1038.
Yang, Y., M.J. Moore, S.F. Brockington, J. Mikenas, J. Olivieri, J.F. Walker, and S.A. Smith. 2018. Improved transcriptome sampling pinpoints 26 ancient and more recent polyploidy events in Caryophyllales, including two allopolyploidy events. New Phytologist.
Yang, Y., M.J. Moore, S.F. Brockington, D.E. Soltis, G.K.-S. Wong, E.J. Carpenter, Y. Zhang, L. Chen, Z.-X. Yan, Y.-L. Xie, R.F. Sage, S. Covshoff, J.M. Hibberd, M.N. Nelson, and S.A. Smith. 2015. Dissecting molecular evolution in the highly diverse plant clade Caryophyllales using transcriptome sequencing. Molecular Biology and Evolution. 32(8): 2001-2014.
Yang, Y. and S.A. Smith. 2014. Orthology inference in non-model organisms using transcriptomes and low-coverage genomes: improving accuracy and matrix occupancy for phylogenomics. Molecular Biology and Evolution. 31 (11): 3081–3092
McKain, M.R., M.G. Johnson, S. Uribe‐Convers, D. Eaton, and Y. Yang. 2018. Practical considerations for plant phylogenomics. Applications in Plant Sciences 6(3): e1038.
Yang, Y., M.J. Moore, S.F. Brockington, J. Mikenas, J. Olivieri, J.F. Walker, and S.A. Smith. 2018. Improved transcriptome sampling pinpoints 26 ancient and more recent polyploidy events in Caryophyllales, including two allopolyploidy events. New Phytologist.
Yang, Y., M.J. Moore, S.F. Brockington, D.E. Soltis, G.K.-S. Wong, E.J. Carpenter, Y. Zhang, L. Chen, Z.-X. Yan, Y.-L. Xie, R.F. Sage, S. Covshoff, J.M. Hibberd, M.N. Nelson, and S.A. Smith. 2015. Dissecting molecular evolution in the highly diverse plant clade Caryophyllales using transcriptome sequencing. Molecular Biology and Evolution. 32(8): 2001-2014.
Yang, Y. and S.A. Smith. 2014. Orthology inference in non-model organisms using transcriptomes and low-coverage genomes: improving accuracy and matrix occupancy for phylogenomics. Molecular Biology and Evolution. 31 (11): 3081–3092
Evolution of gene families and modules
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What are the mechanisms underlying trait evolution?
Gene families that we are investigating include those involved in gain and loses of betalain pigmentation, centromere evolution, and plant carnivory. We are also exploring changes in co-expression networks associated with evolution of metabolites. Representative publications: Lopez-Nievesa, S., Y. Yang, A. Timoneda, M.-M. Wang, T. Feng, S.A. Smith, S.F. Brockington, and H.A. Maeda. Relaxation of tyrosine pathway regulation underlies the evolution of betalain pigmentation in Caryophyllales. 2018. New Phytologist 217(2): 896–908 Brockington S.F., Y. Yang, F. Gandia-Herrero, S. Covshoff, J.M. Hibberd, R.F. Sage, G.K.-S. Wong, M.J. Moore and S.A. Smith. 2015. Lineage specific gene radiations underly the evolution of novel betalain pigmentation in Caryophyllales. New Phytologist. 207(4) 1170–1180 |
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