Botany 940 - Systematics Seminar

Issues in Fern Systematics


Spring 2010

Tuesday 12:05-12:55

Birge 348

Ken Cameron, Ken Sytsma, Emily Sessa - instructors

Upcoming Seminar: Major Branches of the Tree of Life (10Fall); Previous Seminars: Darwin's Abominable Mystery (09Fall), Origin of Species (09Spring), Conceptual Issues in Systematics (08Fall), New Advances (08Spring), Polyploidy (07Spring), Crop Evolution (06Fall), Evidence for Evolution (06Spring), Frontiers in Systematics (05Fall), PhyloCode (05Spring), Phylogeography (04Spring), Key Innovations (03Spring)

This seminar will be an in-depth study of the issues around the origin, diversification, and speciation in ferns. These issues span evolutionary topics as diverse as fern phylogeny, "fern allies", fossil record of fern diversification, modern fern radiation, biogeography of ferns, species concepts in ferns, polyploidy in ferns, life cycles in ferns, and fern genomics. The weekly seminar will examine recent primary literature as well as selected chapters from Ranker and Haufler (2008) Biology and Evolution of Ferns and Lycophytes [referred to hereafter as BEFL]. Course syllabus available here as pdf.

Participants are expected to read the chapter prior to the Sunday before each Tuesday session and provide the leader by Sunday p.m. with a specific question or issue they had with the reading or topic. The leader of each session will give a 20 min powerpoint overview of the topic/readings and set up discussion points for 3-4 small groups. The leader is encouraged to consult additional supplementary materials as s/he prepares the presentation. Class participation by everyone is expected - reading the material, preparing weekly questions, and small group discussion - and will be taken into account when determining final grades.


Other information, references, or links below

Date Topics - Links to reading(s) as pdf available at Learn@UW   Leader
Jan 19 Introduction and organization  

Ken Sytsma

Jan 26 Fern phylogeny    Evie Williams

Schuettpelz and Pryer. 2007. Fern phylogeny inferred from 400 leptosporangiate species and three plastid genes. Taxon 56:1037-1050

BEFL chapter 15 - Fern phylogeny

Feb 2
Fern "allies"    Shahrizim Zulkifly

Pryer et al. 2001. Horsetails and ferns are a monophyletic group and the closest living relatives to seed plants. Nature 409:618-622

Schneider et al. 2009. Is morphology really at odds with molecules in estimating fern phylogeny. Systematic Botany 34: 455-475


Feb 9

Fern classification    Deniz Aygoren

BEFL chapter 16 - Fern classification

Feb 16 Ancient fern diversification    Christopher Cardona

BEFL chapter 13 - Phylogeny and evolution of ferns: a paleontological perspective

Rothwell and Nixon. 2006. How does the inclusion of fossil data change our conclusions about the phylogenetic history of Euphyllophytes? International Journal Plant Sciences 167: 737-749.

Rothwell. 1999. Fossils and ferns in the resolution of land plant phylogeny. The Botanical Review 65: 188-218.

Feb 23 Modern fern diversification    Rafael Arevalo

Schuettpelz and Pryer. 2009. Evidence for a Cenozoic radiation of ferns in an angiosperm-dominated canopy. PNAS 106: 11200-11205

Schneider et al. 2004. Ferns diversified in the shadow of angiosperms. Nature 428: 554-557

Mar 2 Species concepts in ferns    Emily Sessa

Yatskievych and Moran. 1989. Primary divergence and species concepts in ferns. American Fern Journal 79: 36-45.

Paris et al. 1989. Cryptic species, species delimitations, and taxonomic practice in the homosporous ferns. American Fern Journal 79: 46-54.

Barrington et al. 1989. Hybridization, reticulation, and species concepts in the ferns. American Fern Journal 79: 55-64.

BEFL chapter 12 - Species and speciation

Mar 9 Polyploidy: Debate on whether to be a polyploid fern    Ken Cameron - moderator

Wood et al. 2009. The frequency of polyploid speciation. PNAS 106: 13875-13879

Lynch and Conery. 2000. The evolutionary fate and consequences of duplicate genes. Science 290: 1151-1155

Otto and Whitton. 2000. Polyploid incidence and evolution. Annual Review of Genetics 34: 401-437

Gastony. 1986. Electrophoretic evidence for the origin of fern species by unreduced spores. American Journal of Botany 73: 1563-1569

Mar 16 Polyploidy: an example from Appalachian Asplenium    Lois Anderson

Wagner. 1954. Reticulate evolution in the Appalachian Aspleniums. Evolution 8: 103-118

Perrie. 2005. Insights into the biogeography and polyploid evolution of New Zealand Asplenium from chloroplast DNA sequence data. American Fern Journal 95: 1-21

Mar 23 Fern life cycle / breeding systems: workshop    Emily Sessa

Masuyama and Watano.1990. Trends for inbreeding in polyploid pteridophytes. Plant Species Biology 5: 13-17

Soltis and Soltis. 1990. Evolution of inbreeding and outcrossing in ferns and fern-allies. Plant Species Biology 5: 1-11

Soltis and Soltis. 1990.Genetic variation within and among populations of ferns. American Fern Journal 80: 161-172

Soltis and Soltis. 1987. Polyploidy and breeding systems in homosporous pteridophyta: a reevaluation. The American Naturalist 130: 219-232

BEFL chapter 2 - Alternation of generations

Apr 6 Fern biogeography    Brian Sidoti

Geiger et al. 2007. Molecular biogeography and origins of the Hawaiian fern flora. Brittonia 59: 142-158

Wolf et al. 2001. Geographic distributions of homosporous ferns: does dispersal obscure evidence of vicariance?. Journal of Biogeography 28: 263-270

BEFL chapter 14 - Diversity, biogeography, and floristics

Apr 13 Genome structure and evolution    Ken Sytsma

BEFL chapter 6 - Structure and evolution of fern plastid genomes

BEFL chapter 7 - Evolution of the nuclear genome of ferns and lycophytes

Apr 20 Fern identification in WIS Herbarium    
Apr 27 Fern identification in WIS Herbarium    
May 4 Local fieldtrip and/or Sat May 8 trip to Baraboo Hills