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Development of highly variable microsatellite markers for the tetraploid Silene stellata (Caryophyllaceae)
Juannan Zhou1, Michele R Dudash2, Charles B Fenster3
1Behavior, Ecology, Evolution and Systematics Graduate Program, University of Maryland, College Park, Maryland 20742 USA; Department of Botany, National Museum of Natural History, MRC 166, Smithsonian Institution, Washington, DC 20013-7012 USA.
Premise Of The Study:
We designed and tested microsatellite markers for the North American native species Silene stellata (Caryophyllaceae) to investigate its population genetic structure and identify selection on floral design through male reproductive success.
Methods And Results:
A total of 153 candidate microsatellite loci were isolated based on next-generation sequencing. We identified 18 polymorphic microsatellite loci in three populations of S. stellata, with di- or trinucleotide repeats. Genotyping results showed the number of alleles per locus ranged from six to 45 and expected heterozygosity ranged from 0.511 to 0.951. Five of these loci were successfully amplified in S. virginica and S. caroliniana and were also polymorphic.
Conclusions:
The microsatellite markers reported here provide a valuable tool for paternity analysis in S. stellata. They will also be useful for investigating the population genetic structures of S. stellata and related species.
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