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

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
ORCiD logo [1];  [2];  [3];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [3];  [3];  [11];  [12];  [12];  [12];  [12];  [11]; ORCiD logo [13] more »;  [14];  [3] « less
  1. Michigan State Univ., East Lansing, MI (United States). Dept. of Plant Biology; Michigan State Univ., East Lansing, MI (United States). Great Lakes Bioenergy Research Center; Michigan State Univ., East Lansing, MI (United States). Plant Resilience Inst.
  2. HudsonAlpha Inst. for Biotechnology, Huntsville, AL (United States). Genome Sequencing Center; Univ. of Texas, Austin, TX (United States). Dept. of Integrative Biology
  3. Univ. of Texas, Austin, TX (United States). Dept. of Integrative Biology
  4. US Dept. of Agriculture (USDA), Temple, TX (United States). Agricultural Research Service, Grassland, Soil and Water Research Lab.
  5. US Dept. of Agriculture (USDA), Temple, TX (United States). Agricultural Research Service, Wheat, Sorghum, and Forage Research Unit
  6. US Dept. of Agriculture (USDA), Kingsville, TX (United States). National Resources Conservation Service, Kika de la Garza Plant Materials Center
  7. South Dakota State Univ., Brookings, SD (United States). Dept. of Agronomy, Horticulture & Plant Science
  8. Oklahoma State Univ., Stillwater, OK (United States). Dept. of Plant and Soil Sciences
  9. Texas A & M Univ., Overton, TX (United States). Texas A&M AgriLife Research and Extension Center
  10. US Dept. of Agriculture (USDA), Manhattan, KS (United States). National Resources Conservation Service, Plant Materials Center
  11. HudsonAlpha Inst. for Biotechnology, Huntsville, AL (United States). Genome Sequencing Center
  12. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  13. HudsonAlpha Inst. for Biotechnology, Huntsville, AL (United States). Genome Sequencing Center; USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  14. Univ. of Missouri, Columbia, MO (United States). Division of Plant Sciences

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. Finally, locally advantageous alleles could potentially be combined across multiple loci through breeding to create high-yielding regionally adapted cultivars.

Research Organization:
Michigan State Univ., East Lansing, MI (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation Plant Genome Research Program Award
Contributing Organization:
Only Michigan State University received funding directly by this grant for this publication.
Grant/Contract Number:
AC02-05CH11231; SC0014156; SC0017883; SC0018409; FC02-07ER64494
OSTI ID:
1525532
Alternate ID(s):
OSTI ID: 1572023; OSTI ID: 1593753
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 116, Issue 26; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 53 works
Citation information provided by
Web of Science

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Cited By (7)

Geographic variation in the genetic basis of resistance to leaf rust between locally adapted ecotypes of the biofuel crop switchgrass ( Panicum virgatum ) journal April 2020
Evolutionary genomics can improve prediction of species’ responses to climate change text January 2020
Evolutionary genomics can improve prediction of species’ responses to climate change journal January 2020
QTL × environment interactions underlie adaptive divergence in switchgrass across a large latitudinal gradient dataset January 2020
Evolutionary genomics can improve prediction of species’ responses to climate change journal January 2020
QTL × environment interactions underlie adaptive divergence in switchgrass across a large latitudinal gradient dataset January 2020
Climate change disrupts local adaptation and favours upslope migration journal November 2019