ArticleMolecular ecology2014
Population genomic variation reveals roles of history, adaptation and ploidy in switchgrass.
Article in Molecular ecology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.
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Who cites it
23 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.
- Genetic characterization of outbred Sprague Dawley rats and utility for genome-wide association studies.PLoS genetics · 2022Pooled it
- Unveiling the diversification and dispersal of theFrontiers in plant science · 2024Article
- A generalist-specialist trade-off between switchgrass cytotypes impacts climate adaptation and geographic range.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Revisiting the comparative phylogeography of unglaciated eastern North America: 15 years of patterns and progress.Ecology and evolution · 2022Review
- Climatic niche pre-adaptation facilitated island colonization followed by budding speciation in the Madeiran ivy (Frontiers in plant science · 2022Article
- Article
- Genomic Approaches for Conservation Management in Australia under Climate Change.Life (Basel, Switzerland) · 2021Review
- Quantitative trait locus mapping combined with variant and transcriptome analyses identifies a cluster of gene candidates underlying the variation in leaf wax between upland and lowland switchgrass ecotypes.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2021Article
- Article
- Evolution in the Model GenusFrontiers in plant science · 2021Article
- Article
- QTL × environment interactions underlie adaptive divergence in switchgrass across a large latitudinal gradient.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Recent range expansion in Australian hummock grasses (AoB PLANTS · 2019Article
- Extensions of BLUP Models for Genomic Prediction in Heterogeneous Populations: Application in a Diverse Switchgrass Sample.G3 (Bethesda, Md.) · 2019Article
- Genomic Analysis Confirms Population Structure and Identifies Inter-Lineage Hybrids inFrontiers in plant science · 2019Article
- Genome wide association analysis in a mouse advanced intercross line.Nature communications · 2018Article
- Population genomics and climate adaptation of a C4 perennial grass, Panicum hallii (Poaceae).BMC genomics · 2018Article
- An ecophysiologically informed model of seed dispersal by orangutans: linking animal movement with gut passage across time and space.Conservation physiology · 2018Article
- Genomic diversity guides conservation strategies among rare terrestrial orchid species when taxonomy remains uncertain.Annals of botany · 2017Article
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
Abstract
Geographic patterns of genetic variation are shaped by multiple evolutionary processes, including genetic drift, migration and natural selection. Switchgrass (Panicum virgatum L.) has strong genetic and adaptive differentiation despite life history characteristics that promote high levels of gene flow and can homogenize intraspecific differences, such as wind-pollination and self-incompatibility. To better understand how historical and contemporary factors shape variation in switchgrass, we use genotyping-by-sequencing to characterize switchgrass from across its range at 98 042 SNPs. Population structuring reflects biogeographic and ploidy differences within and between switchgrass ecotypes and indicates that biogeographic history, ploidy incompatibilities and differential adaptation each have important roles in shaping ecotypic differentiation in switchgrass. At one extreme, we determine that two Panicum taxa are not separate species but are actually conspecific, ecologically divergent types of switchgrass adapted to the extreme conditions of coastal sand dune habitats. Conversely, we identify natural hybrids among lowland and upland ecotypes and visualize their genome-wide patterns of admixture. Furthermore, we determine that genetic differentiation between primarily tetraploid and octoploid lineages is not caused solely by ploidy differences. Rather, genetic diversity in primarily octoploid lineages is consistent with a history of admixture. This suggests that polyploidy in switchgrass is promoted by admixture of diverged lineages, which may be important for maintaining genetic differentiation between switchgrass ecotypes where they are sympatric. These results provide new insights into the mechanisms shaping variation in widespread species and provide a foundation for dissecting the genetic basis of adaptation in switchgrass.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.