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Title: Data from: High genetic diversity and low population structure in Porter’s sunflower (Helianthus porteri)      
keywords:
conservation genetics
gene flow
geographic isolation
granite outcrop
transplant experiment
Population structure and phylogeography
type:
Article
description:
Granite outcrops in the southeastern United States are rare and isolated habitats that support edaphically controlled communities dominated by herbaceous plants. They harbor rare and endemic species that are expected to have low genetic variability and high population structure due to small populations sizes and their disjunct habitat. We test this expectation for an annual outcrop endemic, Helianthus porteri (Porter’s sunflower). Contrary to expectation, H. porteri has relatively high genetic diversity (He = 0.681) and relatively low genetic structure among the native populations (FST = 0.077) when compared to five other Helianthus species (N = 288; 18 EST-SSR markers). These findings suggest greater gene flow than expected. The potential for gene flow is supported by the analysis of transplant populations established with propagules from a common source in 1959. One population established close to a native popualtion (1.5 km) at the edge of the natural range is genetically similar to and shares rare alleles with the adjancent native population and is distinct from the central source population. In contrast, a transplant population established north of the native range has remained similar to the source population. The relatively high genetic diversity and low population structure of this species, combined with the long term success of transplanted populations, bodes well for its persistence as long as the habitat persists.
ID:
oai:datadryad.org:10255/dryad.46609
ID:
doi:10.5061/dryad.85qv1
Gevaert SD, Mandel JR, Burke JM, Donovan LA (2013) High genetic diversity and low population structure in Porter’s sunflower (Helianthus porteri). Journal of Heredity 104(3): 407-415.
http://hdl.handle.net/10255/dryad.46609
jhered-JOH-2012-180.R2
setID:
hdl_10255_3
recNum:
73
setName:
Main
dateReleased:
04-11-2013
issueDate:
20130313
accessionDate:
02-13-2013
dateCreated:
02-13-2013
abbreviation:
Dryad
ID:
SCR:005910
name:
Dryad Digital Repository
homepage: http://www.datadryad.org
ID:
SCR:005910
name:
Dryad Data Repository

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