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Testing for adaptation to soil in the edaphic endemic genus Leavenworthia (Brassicaceae) Susan Deans, Matthew Albrecht, Quinn Long, and Adam Smith Introduction Changing climate= species have to move too Easier for some than other What


  1. Testing for adaptation to soil in the edaphic endemic genus Leavenworthia (Brassicaceae) Susan Deans, Matthew Albrecht, Quinn Long, and Adam Smith

  2. Introduction • Changing climate= species have to move too • Easier for some than other • What about edaphic edemics? www.fs.fed.us

  3. Cedar limestone glades: hotspot Introduction of endemism commons.wikimedia.org http://capone.mtsu.edu/gladectr/teaching/CedarGlades%20brochure.pdf

  4. Introduction • *My map of range of all leavenworthia species

  5. Leavenworthia stylosa Leavenworthia uniflora http:// www.cas.vanderbilt.edu/bioimages/image/l/lest7-flpurple96031-01-2e5434.htm Darel Hess Leavenworthia torulosa http:// ohioflora.blogspot.com/2011_03_01_archive.html Steve Wilson http:// eppcapp.ky.gov/nprareplants/images/sp_image01/PDBRA1L060.jpg

  6. Local Adaptation Questions • Do populations of the self-compatible L. uniflora show greater adaptation to local soil conditions than the outcrossing L. stylosa?

  7. Local Adaptation Experiment Leavenworthia stylosa Leavenworthia uniflora Seed population 1 Seed population 1 Soil Soil Soil Soil Soil Soil 1 3 1 2 2 3 Seed population 2 Seed population 2 Soil Soil Soil Soil Soil Soil 2 3 1 1 2 3 Seed population 3 Seed population 3 Soil Soil Soil Soil Soil Soil 1 2 3 1 3 2

  8. Preparing the dishes

  9. Growth Chambers and Germinating Seeds

  10. Local Adaptation Experiment Results Results L. stylosa L. uniflora

  11. Genus Niche Experiment • Question: Does Leavenworthia uniflora have better success germinating on Missouri dolomite glade soils that L. stylosa and L. torulosa ? • Could these other species extend their range into these dolomite glades as the climate in their current restricted distribution becomes unfavorable?

  12. L. stylosa (TN origin) L. torulosa (TN origin) L. stylosa soil mix L. torulosa soil mix L. uniflora (MO) soil mix L. uniflora (MO) soil mix L. uniflora (TN origin) L. uniflora (MO origin) L. uniflora (TN) soil mix L. uniflora (MO) soil mix L. uniflora (TN soil mix L. uniflora (MO) soil mix

  13. Genus Niche Experiment Results 1.0 1.0 Germination proportion L. stylosa L. torulosa 0.8 0.8 0.6 0.6 0.4 0.4 0.2 0.2 0.0 0.0 Away Home Away Home L. uniflora (MO) 1.0 1.0 Germination proportion L. uniflora (TN) 0.8 0.8 0.6 0.6 0.4 0.4 0.2 0.2 0.0 0.0 Away Home Away Home Soil type Soil type

  14. So far… • No evidence of local adaptation to soil in the germination of these Leavenworthia • Adaptation not found at population or species level • Could mean these species are able to adapt to new soil types… • OR, adaptation won’t become clear until they’re older

  15. Transplanted seedlings To be continued…

  16. Results

  17. Acknowledgements • Dr. Matthew Albrecht , mentor • Dr. Adam Smith and Dr. Quinn Long , CCSD • Dr. David Bogler REU coodinator • Justin Zweck (paper edits) • Kyle Kotecki and Ryan McGarvey (data collection)

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