In order to determine whether genetic architecture stems from pre-Pleistocene events or refugia, Chávez-Pesqueira and Núñez-Farfán assess genetic diversity and population dynamics of 19 populations of wild papaya (Carica papaya) from northern Mesoamerica.
Phylogenetic analysis using cpDNA markers indicates a lack of a phylogeographic structure, and nuclear markers reveal a recent population structure. This suggests that the evolution of C. papaya together with seed dispersal by animals could have contributed to long-distance colonization of lowland rainforests. Anthropogenic habitat disturbance poses a threat to the maintenance and longevity of wild papaya’s genetic diversity and population structure.
Chávez-Pesqueira, M., & Núñez-Farfán, J. (2016). Genetic diversity and structure of wild populations of Carica papaya in Northern Mesoamerica inferred by nuclear microsatellites and chloroplast markers. Annals of Botany, 118(7), 1293–1306. https://doi.org/10.1093/aob/mcw183