Skip to Main Content
Extant population genetic variation and structure of eastern white pine (Pinus strobus L.) in the Southern AppalachiansAuthor(s): Thomas D. Whitney; Kamal J. K. Gandhi; J. L. Hamrick; Rima D. Lucardi
Source: Tree Genetics & Genomes
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
Download Publication (6.0 MB)
DescriptionEasternwhitepine(PinusstrobusL.)isawidespreadconiferineasternNorthAmerica.Anoveldiebackphenomenon,aswellas increasingglobaltemperaturescontributingtothecontractionofsuitablehabitat,isthreateningthisspecies’long-termpersistence in the Southern Appalachian Mountains. This southern extent of its current range is where P. strobus is hypothesized to have survived in refugial populations during the last glacial maximum. As a result, extant populations located here may have higher levelsofancestral genetic diversity, and byextension, adaptivepotential.We genotyped 432 P.strobusindividuals from23sites throughouttheSouthernAppalachiansandanother34individualsfromtworeferencepopulationsinthenorthernUSA,using10 establishedmicrosatellitemarkers.Levelsofgeneticdiversityinthesouthernportionoftherangewerecomparablebutnothigher thanreferencenorthernpopulations.Therewasanoverallheterozygotedeficiencyandhighinbreedingcoefficient(FIS=0.173); however,thesevalueswerecomparabletopublishedresearchofP.strobusthroughoutthenorthernrange.Therewaslowoverall genetic differentiation (FST=0.055) among populations in the Southern Appalachians and population structure was best explained by ecoregions. These results show that P. strobus in the Southern Appalachians is a fairly heterogenous and admixed species with relatively high genetic diversity mostly partitioned within populations. The Southern Appalachians remains an important area for P. strobus conservation, but not necessarily because it is genetically unique.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationWhitney, Thomas D.; Gandhi, Kamal J. K.; Hamrick, J. L.; Lucardi, Rima D. 2019. Extant population genetic variation and structure of eastern white pine (Pinus strobus L.) in the Southern Appalachians. Tree Genetics & Genomes. 15(5): 967-. https://doi.org/10.1007/s11295-019-1380-3.
KeywordsConservation, Genetic differentiation, Genetic diversity, Lastglacial maximum, Microsatellites, Refugium
- Response of Planted Eastern White Pine (Pinus strobus L.) to Mechanical Release, Competition, and Drought in the Southern Appalachians
- Genetic Divergence and signatures of natural election in marginal populations of a Keystone, long-lived conifer, Eastern White Pine (Pinus strobus) from Northern Ontario
- Association of Caliciopsis pinea Peck and Matsucoccus macrocicatrices Richards with eastern white pine ( Pinus strobus L.) seedling dieback
XML: View XML