Botany 940 - Systematics Seminar Polyploidy

Spring 2007

Tuesday 12:05-12:55

D. Baum, E. Emshwiller, K. Sytsma - instructors

Previous Seminars: Crop Evolution (06Fall), Evidence for Evolution (06Spring), Frontiers in Systematics (05Fall), PhyloCode (05Spring), Phylogeography (04Spring), Key Innovations (03Spring)

Date Leader Topic (with link to powerpoint) & Readings [All References]
Jan 23 Organizational  
Jan 30
Ken Sytsma Overview of polyploidy - the classical perspective (Briggs & Walter 1997; Grant 1981ch23)

Feb 6

Rachel Schmidt Jabaily Polyploid origins: somatic doubling vs. 2n gametes (Harlan & deWet 1975; Ramsey & Schemske 1998)
Feb 13 Ken Sytsma Overview of polyploidy - the classical perspective (cont.) (Stebbins 1971ch5; Stebbins 1971ch6); optional readings - Grant 1981ch22, ch24, ch25, ch26)
Feb 20 Bob Kowal Chromosome squashing - lab techniques (Collecting techniques; Snow's acedic carmine squash technique)
Feb 27 Alice Ecker Ancient polyploidy (Bowers & al. 2003); optional readings - Seoighe & Wolfe 1999; Wolfe & Shields 1997)
Mar 6 Ben Grady Delimitation of taxonomic groups in polyploids (Lihova & al. 2003; Grant 1981 ch25)
Mar 13 Brent Berger Polyploidy, phylogenetics, and issues (Wendel & Doyle 1998)
Mar 20 Natalia Alvarez Polyploidy and evolution of domesticated plants (Adams & Wendel 2004; Hilu 1993)
Mar 27 Cody Williams Systematic case study: Clarkia (Onagraceae) (Abdel-Hameed & Snow 1972; Mosquin 1963)
Apr 3 Spring Break  
Apr 10 Andy Gardner Recent polyploidy in the goat's beards (Tragopogon, Asteraceae) (Pires & al. 2004a; Soltis & al. 2004)
Apr 17 Mercedes Ames Sevillano Genomic re-arrangements in Brassica allopolyploids (Pires & al. 2004b; Song & al. 1995)
Apr 24 Talline Martins Evolution of duplicated genomes (Force & al. 1999; Aagaard & al. 2006)
May 1 Jane Bradbury Gene expression in polyploids & general review (Chen & Ni, 2006)

References: (a listing of more complete references by topic available via this link - it will be periodically updated)

Abdel-Hameed, F. and R. Snow. 1972. The origin of the allotetraploid Clarkia gracilis. Evolution 26:74-83.

Adams, K.L. and J.F. Wendel. 2004. Exploring the genomic mysteries of polyploidy in cotton. Biol. J. Linn. Soc. 82:573-581.

Bowers, J.E., B.A. Chapman, J. Rong, and A.H. Paterson. 2003. Unraveling angiosperm genome evolution by phylogenetic analysis of chromosomal duplication events. Nature 422:433-438.

Briggs and Walter. 1997. pages 264-269; 309-352 in Plant Variation and Evolution (3rd ed)

Chen, Z.J. and Z. Ni. 2006. Mechanisms of genomic rearrangements and gene expression changes in plant polyploids. BioEssays 28:240-252.

Grant, V. 1981. Plant Speciation, pp.298-306 (chapter 22: Polyploidy, range and frequency)

Grant, V. 1981. Plant Speciation, pp.298-306 (chapter 23: Types of polyploids)

Grant, V. 1981. Plant Speciation, pp.298-306 (chapter 24: Factors promoting polyploidy)

Grant, V. 1981. Plant Speciation, pp.298-306 (chapter 25: The polyploid complex)

Grant, V. 1981. Plant Speciation, pp.298-306 (chapter 26: Natural autopolyploids)

Harlan, J.R. and J.M.J. deWet. 1975. On O. Winge and a prayer: the origins of polyploidy. Botanical Review 41:361-390.

Hilu, K.W. 1993. Polyploidy and evolution of domesticated plants. Amer. J. Bot. 80:1494-1499.

Lihova, J., A. Tribsch, and K. Marhold. 2003. The Cardamine pratensis (Brassicaceae) group in the Iberian Peninsula: taxonomy, polyploidy and distribution. Taxon 52:783-801.

Mosquin, T. 1963. Chromosomal repatterning in Clarkia rhomboidea as evidence for post-Pleistocene changes in distribution. Evolution 18:12-25.

Pires, J.C., K.Y. Lim, A. Kovarik, R. Maytasek, A. Boyd, A. Leitch, I. Leitch, M. Bennett, P.S. Soltis, and D.E. Soltis, 2004a. Molecular analysis of recently evolved Tragopogon (Asteraceae) allopolyploids reveal a karyotype that is additive of the diploid progenitors. American Jouranl of Botany 91: 1022-1035.

Pires, J.C., J.W. Zhao, M.E. Schranz, E.J. Leon, P.A. Quijada, L.N. Lukens and T.C. Osborn. 2004. Flowering time divergence and genomic rearrangements in resynthesized Brassica polyploids (Brassicaceae). Biological Journal of the Linnean Society 82: 675-688.

Ramsey, J. and D. W. Schemske. 1998. Pathways, mechanisms, and rates of polyploid formation in flowering plants. Ann. Rev. Ecol. Syst. 29:467-501.

Ramsey, J. and D. W. Schemske. 2002. Neopolyploidy in flowering plants. Ann. Rev. Ecol. Syst. 33:589-639.

Seoighe, C. and K.W. Wolfe. 1999. Yeast genome evolution in the post-genome era. Curr. Opin. Microbiol. 2:548-554.

Soltis, D.E., P.S. Soltis, J.C. Pires, A. Kovarik, J. Tate, and E. Madrodiev. 2004. Recent and recurrent polyploidy in Tragopogon (Asteraceae): cytogenetic, genomic, and genetic comparisons. Biol. J. Linn. Soc. 82:485-501.

Stebbins, G.L. 1971. Chromosomal Evolution in Higher Plants, pp.124-154 (chapter 5: Morphological, physiological, and cytogenetic significance of polyploidy)

Stebbins, G.L. 1971. Chromosomal Evolution in Higher Plants, pp.155-189 (chapter 6: Polyploidy, plant geography, and major trends of evolution)

Wendel, J.F. and J.J. Doyle. 1998. Phylogenetic incongruence: window into genome history and molecular evolution. Pp. 265-296 in Molecular Systematics of Plants II: DNA Sequencing [D.E. Soltis, P.S. Soltis, J.J. Doyle, eds.] Kluwer Academic Publishers, Boston.

Wolfe, K. and D.C. Shields. 1997. Molecular evidence for an ancient duplication of the entire yeast genome. Nature 387:708-713.