Testing for adaptation to soil in the edaphic endemic genus - - PowerPoint PPT Presentation

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Testing for adaptation to soil in the edaphic endemic genus - - PowerPoint PPT Presentation

Dec 22, 2022 239 likes •419 views

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

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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

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Introduction

  • Changing climate= species have to move too
  • Easier for some than other
  • What about edaphic edemics?

www.fs.fed.us

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Introduction

http://capone.mtsu.edu/gladectr/teaching/CedarGlades%20brochure.pdf commons.wikimedia.org

Cedar limestone glades: hotspot

  • f endemism
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Introduction

  • *My map of range of all leavenworthia species
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http://ohioflora.blogspot.com/2011_03_01_archive.html Steve Wilson http://www.cas.vanderbilt.edu/bioimages/image/l/lest7-flpurple96031-01-2e5434.htm Darel Hess http://eppcapp.ky.gov/nprareplants/images/sp_image01/PDBRA1L060.jpg

Leavenworthia uniflora Leavenworthia stylosa Leavenworthia torulosa

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Local Adaptation Questions

  • Do populations of the self-compatible L.

uniflora show greater adaptation to local soil conditions than the outcrossing L. stylosa?

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Local Adaptation Experiment

Leavenworthia stylosa Leavenworthia uniflora

Seed population 1 Seed population 3 Seed population 2 Seed population 3 Seed population 2 Seed population 1

Soil 1 Soil 1 Soil 2 Soil 3 Soil 2 Soil 3 Soil 1 Soil 3 Soil 2 Soil 1 Soil 3 Soil 2 Soil 3 Soil 2 Soil 1 Soil 3 Soil 2 Soil 1

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Preparing the dishes

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Growth Chambers and Germinating Seeds

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Results

Local Adaptation Experiment Results

  • L. stylosa
  • L. uniflora
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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?

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

Away Home

Germination proportion

0.0 0.2 0.4 0.6 0.8 1.0 Away Home 0.0 0.2 0.4 0.6 0.8 1.0 Away Home

Soil type Germination proportion

0.0 0.2 0.4 0.6 0.8 1.0 Away Home

Soil type

0.0 0.2 0.4 0.6 0.8 1.0

Genus Niche Experiment

  • L. stylosa
  • L. torulosa
  • L. uniflora (TN)
  • L. uniflora (MO)
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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

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Transplanted seedlings

To be continued…

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Results

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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)