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| Pryer Lab Director: Publications since January 2023List all publications in the database. :chronological alphabetical combined listing:%% Pryer, Kathleen M. @article{fds373350, Author = {Hay, NM and Windham, MD and Mandáková, T and Lysak, MA and Hendriks, KP and Mummenhoff, K and Lens, F and Pryer, KM and Bailey, CD}, Title = {A Hyb-Seq phylogeny of Boechera and related genera using a combination of Angiosperms353 and Brassicaceae-specific bait sets.}, Journal = {American journal of botany}, Volume = {110}, Number = {10}, Pages = {e16226}, Year = {2023}, Month = {October}, url = {http://dx.doi.org/10.1002/ajb2.16226}, Abstract = {<h4>Premise</h4>Although Boechera (Boechereae, Brassicaceae) has become a plant model system for both ecological genomics and evolutionary biology, all previous phylogenetic studies have had limited success in resolving species relationships within the genus. The recent effective application of sequence data from target enrichment approaches to resolve the evolutionary relationships of several other challenging plant groups prompted us to investigate their usefulness in Boechera and Boechereae.<h4>Methods</h4>To resolve the phylogeny of Boechera and closely related genera, we utilized the Hybpiper pipeline to analyze two combined bait sets: Angiosperms353, with broad applicability across flowering plants; and a Brassicaceae-specific bait set designed for use in the mustard family. Relationships for 101 samples representing 81 currently recognized species were inferred from a total of 1114 low-copy nuclear genes using both supermatrix and species coalescence methods.<h4>Results</h4>Our analyses resulted in a well-resolved and highly supported phylogeny of the tribe Boechereae. Boechereae is divided into two major clades, one comprising all western North American species of Boechera, the other encompassing the eight other genera of the tribe. Our understanding of relationships within Boechera is enhanced by the recognition of three core clades that are further subdivided into robust regional species complexes.<h4>Conclusions</h4>This study presents the first broadly sampled, well-resolved phylogeny for most known sexual diploid Boechera. This effort provides the foundation for a new phylogenetically informed taxonomy of Boechera that is crucial for its continued use as a model system.}, Doi = {10.1002/ajb2.16226}, Key = {fds373350} } @article{fds372242, Author = {Hay, NM and Akinwuntan, JV and Cai, V and Windham, MD and Pryer, KM}, Title = {Exploring Past and Future Distributions of the Rare Appalachian Oak Fern Using MaxEnt Modeling}, Journal = {American Fern Journal}, Volume = {113}, Number = {2}, Pages = {109-125}, Year = {2023}, Month = {June}, url = {http://dx.doi.org/10.1640/0002-8444-113.2.109}, Abstract = {Abstract . Anthropogenic climate change is projected to have an especially negative impact on the survival of plants that are dependent on limited microclimatic refugia or that already reside at their climatic extreme. Gymnocarpium appalachianum is a narrowly endemic fern restricted to cold mountaintops and algific vents in the central and southern Appalachian region of eastern North America. It is the much rarer of the two documented diploid parents of the circumboreal allotetraploid G. dryopteris - one of the most widespread fern species on the planet. Gymnocarpium appalachianum is a good case study for forecasting how evolutionarily significant, but rare, species might survive on a warming planet. We utilize an ecological niche modeling approach (MaxEnt) to explore the projected distribution of G. appalachianum under past (Last Glacial Maximum) and future climate models. All known verified herbarium records of G. appalachianum were georeferenced, for a total of 70 occurrence points. Nineteen standard bioclimatic variables extracted from WorldClim were used to model near-current climate projections; representative concentration pathways (RCPs 2.6 and 8.5) were used for future climate projections (2070). The temperature annual range, mean temperature of warmest quarter, precipitation of driest month, precipitation of coldest quarter, and mean diurnal range were identified as the key variables for shaping the distribution of G. appalachianum. An unanticipated result from our analyses is that G. appalachianum has past and current projected habitat suitability in Alaska. Because this overlaps with the current range of G. disjunctum, the other diploid parent of G. dryopteris, it suggests a possible region of origin for this circumboreal tetraploid descendent of G. appalachianum - a research avenue to be pursued in the future. Our study envisions a dire fate for G. appalachianum; its survival will likely require an urgent contingency plan that includes human-mediated population relocation to cooler, northern locations. Understanding the long-term sustainability of narrowly endemic plants such as G. appalachianum is critical in decisions about their management and conservation.}, Doi = {10.1640/0002-8444-113.2.109}, Key = {fds372242} } @article{fds369759, Author = {Windham, MD and Picard, KT and Pryer, KM}, Title = {An in-depth investigation of cryptic taxonomic diversity in the rare endemic mustard Draba maguirei.}, Journal = {American journal of botany}, Volume = {110}, Number = {3}, Pages = {1-22}, Year = {2023}, Month = {March}, url = {http://dx.doi.org/10.1002/ajb2.16138}, Abstract = {<h4>Premise</h4>Previously published evidence suggests that Draba maguirei, a mustard endemic to a few localities in the Bear River, Wellsville, and Wasatch Mountains of northern Utah, may represent a cryptic species complex rather than a single species. Conservation concerns prompted an in-depth systematic study of this taxon and its putative relatives.<h4>Methods</h4>Sampling most known populations of D. maguirei s.l. (D. maguirei var. maguirei and D. maguirei var. burkei), we integrate data from geography, ecology, morphology, cytogenetics and pollen, enzyme electrophoresis, and the phylogenetic analysis of nuclear internal transcribed spacer sequences to explore potential taxonomic diversity in the species complex.<h4>Results</h4>Draba maguirei var. burkei is shown here to be a distinct species (D. burkei) most closely related to D. globosa, rather than to D. maguirei. Within D. maguirei s.s., the northern (high elevation) and southern (low elevation) population clusters are genetically isolated and morphologically distinguishable, leading to the recognition here of the southern taxon as D. maguirei subsp. stonei.<h4>Conclusions</h4>Our study reveals that plants traditionally assigned to D. maguirei comprise three genetically divergent lineages (D. burkei and two newly recognized subspecies of D. maguirei), each exhibiting a different chromosome number and occupying a discrete portion of the geographic range. Although previously overlooked and underappreciated taxonomically, the three taxa are morphologically recognizable based on the distribution and types of trichomes present on the leaves, stems, and fruit. Our clarification of the diversity and distribution of these taxa provides an improved framework for conservation efforts.}, Doi = {10.1002/ajb2.16138}, Key = {fds369759} } | |
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