Development and characterization of 12 polymorphic microsatellite loci in the sea sandwort, Honckenya peploides

Journal of Plant Research
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Abstract

Codominant marker systems are better suited to analyze population structure and assess the source of an individual in admixture analyses. Currently, there is no codominant marker system using microsatellites developed for the sea sandwort, Honckenya peploides (L.) Ehrh., an early colonizer in island systems. We developed and characterized novel microsatellite loci from H. peploides, using reads collected from whole genome shotgun sequencing on a 454 platform. The combined output from two shotgun runs yielded a total of 62,669 reads, from which 58 loci were screened. We identified 12 polymorphic loci that amplified reliably and exhibited disomic inheritance. Microsatellite data were collected and characterized for the 12 polymorphic loci in two Alaskan populations of H. peploides: Fossil Beach, Kodiak Island (n = 32) and Egg Bay, Atka Island (n = 29). The Atka population exhibited a slightly higher average number of alleles (3.9) and observed heterozygosity (0.483) than the Kodiak population (3.3 and 0.347, respectively). The overall probability of identity values for both populations was PID = 2.892e−6 and PIDsib = 3.361e−3. We also screened the 12 polymorphic loci in Wilhelmsia physodes (Fisch. ex Ser.) McNeill, the most closely related species to H. peploides, and only one locus was polymorphic. These microsatellite markers will allow future investigations into population genetic and colonization patterns of the beach dune ruderal H. peploides on new and recently disturbed islands.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Development and characterization of 12 polymorphic microsatellite loci in the sea sandwort, Honckenya peploides
Series title Journal of Plant Research
DOI 10.1007/s10265-018-1036-7
Volume 131
Issue 5
Year Published 2018
Language English
Publisher Springer
Contributing office(s) Alaska Science Center Biology WTEB
Description 7 p.
First page 879
Last page 885
Country United States
State Alaska
Other Geospatial Atka Island, Kodiak Island