Microsatellite (SSR) Dataset Revealing Hybridization and Introgression between Ocotea loxensis and Ocotea infrafoveolata (Lauraceae)

This dataset supports the study: “The Complex Genetic Legacy of Hybridization and Introgression between the Rare Ocotea loxensis van der Werff and the Widespread O. infrafoveolata van der Werff (Lauraceae)”. It comprises original microsatellite (SSR) NCBI data used to assess genetic diversity, population structure, and patterns of hybridization and introgression between a rare endemic species (O. loxensis) and its widespread congener (O. infrafoveolata). SSRs were generated to:(i) quantify levels of genetic diversity within and between species,(ii) detect hybrid individuals and characterize admixture patterns, and(iii) evaluate the extent and direction of introgression across contact zones. The results highlight a complex genetic landscape shaped by interspecific gene flow, with important implications for the conservation of O. loxensis, particularly in the context of genetic swamping and the maintenance of species boundaries. Methods Overview Genomic DNA was extracted from leaf tissue and individuals were genotyped using species-specific or cross-amplified microsatellite (SSR) markers. Genetic diversity indices, population structure, and admixture patterns were assessed using standard population genetic approaches (e.g., Bayesian clustering, multivariate analyses, and hybrid class assignment methods). Scientific Context and Relevance Hybridization and introgression are increasingly recognized as key processes shaping the evolution of plant species, particularly in biodiverse tropical systems. This dataset provides empirical evidence of gene flow between closely related Ocotea species, offering insights into: The genetic consequences of hybridization in rare species The role of widespread congeners as sources of introgression Conservation challenges associated with maintaining genetic integrity The data are particularly relevant for studies on speciation, conservation genetics, and hybrid zone dynamics. Related publication:Draper D, Riofrío L, Naranjo C, Marques I. The Complex Genetic Legacy of Hybridization and Introgression between the Rare Ocotea loxensis van der Werff and the Widespread O. infrafoveolata van der Werff (Lauraceae). Plants. 2024; 13(14):1956. https://doi.org/10.3390/plants13141956