Dryad
Published August 17, 2020 | Version v1
Dataset Open

QTL × environment interactions underlie adaptive divergence in switchgrass across a large latitudinal gradient

Authors/Creators

  • 1. Michigan State University
  • 2. HudsonAlpha Institute for Biotechnology
  • 3. The University of Texas at Austin
  • 4. Grassland, Soil and Water Research Laboratory, Agricultural Research Service, US Department of Agriculture*
  • 5. Wheat, Sorghum, and Forage Research Unit, Agricultural Research Service, US Department of Agriculture*
  • 6. Kika de la Garza Plant Materials Center, National Resources Conservation Service*
  • 7. South Dakota State University
  • 8. Oklahoma State University
  • 9. Texas A&M University
  • 10. Plant Materials Center, National Resources Conservation Service, US Department of Agriculture*
  • 11. Department of Energy Joint Genome Institute*
  • 12. University of Missouri, Columbia*
  • 13. The University of Texas at Arlington

Description

Local adaptation is the process by which natural selection drives adaptive phenotypic divergence across environmental gradients. Theory suggests that local adaptation results from genetic trade-offs at individual genetic loci, where adaptation to one set of environmental conditions results in a cost to fitness in alternative environments. However, the degree to which there are costs associated with local adaptation is poorly understood because most of these experiments rely on two-site reciprocal transplant experiments. Here, we quantify the benefits and costs of locally adaptive loci across 17° of latitude in a four-grandparent outbred mapping population in outcrossing switchgrass (Panicum virgatumL.), an emerging biofuel crop and dominant tallgrass species. We conducted quantitative trait locus (QTL) mapping across 10 sites, ranging from Texas to South Dakota. This analysis revealed that beneficial biomass (fitness) QTL generally incur minimal costs when transplanted to other field sites distributed over a large climatic gradient over the 2 y of our study. Therefore, locally advantageous alleles could potentially be combined across multiple loci through breeding to create high-yielding regionally adapted cultivars.

Notes

Funding provided by: Biological and Environmental Research
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100006206
Award Number: DE-FC02-07ER64494

Funding provided by: Biological and Environmental Research
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100006206
Award Number: DE-SC0014156

Funding provided by: Biological and Environmental Research
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100006206
Award Number: DE-SC0017883

Funding provided by: Biological and Environmental Research
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100006206
Award Number: DE-SC0018409

Funding provided by: Division of Integrative Organismal Systems
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000154
Award Number: IOS-1444533

Funding provided by: Division of Integrative Organismal Systems
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000154
Award Number: IOS-0922457

Funding provided by: Office of Science
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100006132
Award Number: DE-AC02-05CH11231

Files

PhenotypesFormattedForGenstatWithoutOutliers2YearsFullGenotypes.csv

Files (1.4 MB)

Name Size Download all
md5:eb1ae261ca05227baf332bc1e348bf3d
994.3 kB Download
md5:ef8bcec7be08c8518cedb1e79578d284
8.4 kB Download
md5:85e786c087ba3b1706306e9794e0f342
24.8 kB Download
md5:a8f42814eb03abe5eb2aa5f198f617a5
407.2 kB Preview Download

Additional details

Related works

Is cited by
10.1073/pnas.1821543116 (DOI)