Chloroplast, mitochondrial, and nuclear microsatellites from the southern Appalachian hornwort, Nothoceros aenigmaticus (Dendrocerotaceae)

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Abstract

• Premise of the study: New microsatellite primers were developed for testing genetic differentiation within Nothoceros aenigmaticus and their potential use in other Nothoceros species. The microsatellites are designed to investigate partitioning of genetic variation in a taxon with a peculiar sex allopatry in the southern Appalachian Mountains and relationships with conspecific sexual populations from Mexico. • Methods and Results: We used two methods for microsatellite development: an enriched library and second-generation shotgun sequence reads. From these two methods, a total of nine primer pairs were selected and tested on 89 southern Appalachian N. aenigmaticus accessions, nine Mexican accessions, and 16 N. vincentianus accessions. Three mitochondrial loci were recovered from the enriched library method and six loci from 454 shotgun sequencing: three were from the chloroplast and three from the nucleus. The primers amplified repeats with two to 20 alleles per locus. • Conclusions: New microsatellite primers were developed for testing genetic differentiation within N. aenigmaticus and potentially for use in other Nothoceros species. We present one of the first reports of highly polymorphic mitochondrial microsatellites in plants. © 2012 Botanical Society of America.

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Villarreal, J. C., Forrest, L. L., McFarland, K., & Goffinet, B. (2012). Chloroplast, mitochondrial, and nuclear microsatellites from the southern Appalachian hornwort, Nothoceros aenigmaticus (Dendrocerotaceae). American Journal of Botany, 99(3). https://doi.org/10.3732/ajb.1100392

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