ArticleFrontiers in plant science2026
Restricted distribution and population genetic structure in the rare Korean endemic plant
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Methods: We applied triple-digest restriction site-associated DNA sequencing (3RAD-seq) to compare genetic diversity and population structure between the wild population and four ex situ populations maintained in botanical gardens, identifying 43,885 single-nucleotide polymorphisms (SNPs) across 95 individuals. Clone correction based on the full SNP dataset reduced the dataset to 59 representative multilocus genotypes. Results: The wild population (GJ) showed moderate genetic diversity compared with other Korean endemic species, and positive inbreeding coefficients were observed in all populations. Population structure analyses based on the clone-corrected and LD-pruned 5,539-SNP dataset revealed genetic differentiation among populations. Principal component analysis showed that GJ and HM clustered closely, whereas GC, HT, and YM showed varying degrees of differentiation. ADMIXTURE analysis identified K = 3 as the best-supported value based on the lowest cross-validation error, with GJ and HM sharing a common ancestry component, YM showing a distinct ancestry pattern, and GC and HT exhibiting mixed ancestry. Pairwise fixation index ( Discussion: Genetic differences among ex situ populations may reflect differences in source material, propagation history, and clonal redundancy. These findings suggest that ex situ groups differ in their ability to represent the genetic composition of the wild population. Conservation of
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