Abstract Detail

Phylogenomics

Mathews, Sarah [1], Campbell, Christopher [2], Cronn, Richard [3], Gernandt, David [4], Graham, Sean [5], Hansen, Kimberly [6], Holman, Garth [7], G.Kelch, Dean [8], Lam, Vivienne [9], Li, Jianhua [10], Liston, Aaron [11], Little, Damon [12], Mapes, Gene [13], Mei, Wenbin [14], Moore, Abigail [15], Nagalingum, Nathalie [16], Parks, Matthew [17], Peery, Rhiannon [18], Rai, Hardeep [19], Raubeson, Linda [20], Ross, Gregory [21], Rothwell, Gar [22], Ruhsam, Markus [23], Ryberg, Patricia E. [24], Schwarzbach, Andrea [25], Stevenson, Dennis [26], Stockey, Ruth [27], Yang, Yong [28].

Seed plant phylogeny inferred from integrated analyses of morphological and molecular data.

A prominent feature of seed plant evolution is extinction. Extinct taxa represent at least ten major lineages of seed plants, compared with the five extant clades, the angiosperms, cycads, Ginkgo, conifers, and gnetophytes. Two major consequences for phylogenetics are that the phylogeny of seed plants cannot be inferred with molecular data alone, and molecular datasets for the living lineages show evidence of biases that can lead to erroneous results. For example, the problem of placing gnetophytes that was observed in early multi-locus studies has persisted into the phylogenomics era, with nuclear and plastid phylogenomics datasets supporting sister group relationships with either Pinaceae or cupressophytes, respectively. While this might indicate different histories for the two genomes, decisiveness and certainty metrics show that there is limited information in the data for resolving this trichotomy. Other lines of evidence are needed. We have assembled a new morphological dataset for seed plants that includes representatives of both extinct taxa and those living taxa for which we have deep sampling of molecular characters. This talk will outline our analytical approaches and will present a perspective on the phylogeny of seed plants from integrated analyses of morphological and molecular data.

1 - CSIRO National Research Collections Australia, Australian National Herbarium, Clunies Ross Street, GPO 1700, Canberra, ACT, 2601, Australia
2 - School Of Biology And Ecology, 2 Winslow Hall, Orono, ME, 04469, United States
3 - 3200 SW Jefferson Way, Corvallis, OR, 97330, United States
4 - UNAM, Departmento de Botanica, Mexico City, Mexico
5 - University Of British Columbia, Department Of Botany, 3529 - 6270 University Boulevard, Vancouver, BC, V6T 1Z4, Canada
6 - Washington State University, Pullman, WA, 99164, USA
7 - 11 Goodwind Lane, Camden, ME, 04843, United States
8 - California Department of Food and Agriculture, Sacramento, CA, 95832-1448, USA
9 - University of British Columbia, Vancouver, BC, Canada
10 - Hope College, Biology, 35 E 12th Street, Holland, MI, 49423, United States
11 - Oregon State University, Department of Botany and Plant Pathology, Cordley Hall, Corvallis, OR, 97331, USA
12 - New York Botanical Garden, Bronx, NY, 10458
13 - Ohio University, Athens, OH, 45701, US
14 - UC Davis, Davis, CA, 95616, USA
15 - University Of Oklahoma, Department Of Microbiology And Plant Biology, 770 Van Vleet Oval, Rm. 208, Norman, OK, 73019, United States
16 - California Academy of Sciences, 55 Music Concourse Dr, San Francisco, CA, 94118, USA
17 - Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, IL, 60022, United States
18 - University Of Alberta, Department Of Biological Sciences, Z-207 Biological Sciences Bldg, 116th St And 85th Ave, Edmonton, AB, T6G 2R3, Canada
19 - 10951 79 Avenue, Edmonton, AB, T6G 0P1, Canada
20 - Department Of Biological Sciences, 400 E. University Way, Ellensburg, WA, 98926, United States
21 - Botany, 3529 - 6270 University Boulevard, Vancouver, BC, V6T 1Z4, Canada
22 - Oregon State University, Department Of Botany And Plant Pathology, 2082 Cordley Hall, Corvallis, OR, 97331, United States
23 - Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh, EH3 5LR, UK
24 - Park University, Department Of Natural And Physical Sciences, Parkvilee, MO, 64152, United States
25 - University Of Texas At Brownsville, Biomedicine Department, 1 West University Boulevard, Department Of Biomedicine, Brownsville, TX, 78520, United States
26 - New York Botanical Garden, Science, 2900 Southern Boulevard, Bronx, NY, 10458, USA
27 - Department Of Biological Sciences, 2082 Cordley Hall, Corvallis, OR, 97331, United States
28 - State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China

Keywords:
seed plant
phylogeny
fossils
molecules
morphology.

Presentation Type: Oral Paper
Session: 11, Phylogenomics II
Location: 114/Mayo Civic Center
Date: Monday, July 23rd, 2018
Time: 3:45 PM
Number: 11007
Abstract ID:498
Candidate for Awards:None