The origin and evolution of the genus Eranthis have not been previously studied. Also, population genetics in the terms of genetic differentiation and gene flow for the genus Eranthis was seldom conducted. In this study, the temporal and spatial origins and evolution of four Eranthis species - Erant...
The origin and evolution of the genus Eranthis have not been previously studied. Also, population genetics in the terms of genetic differentiation and gene flow for the genus Eranthis was seldom conducted. In this study, the temporal and spatial origins and evolution of four Eranthis species - Eranthis byunsanensis, E. pungdoensis, E. stellata, and E. pinnatifida – were investigated. Diverse population genetics parameters for these species were analyzed as well. The sampling localities were Korea, Japan, Jilin in China, and the area around Vladivostok in Primorskiy, Russia.
In the study for the origin and evolution of the genus Eranthis, 12 chloroplast microsatellite loci (n=935 individuals) and two chloroplast noncoding regions (rpL16 intron, petL-psbE intergenic spacer; n=33 individuals) were utilized. The genetic diversity, genetic structure, phylogenetic relationships of the four species were analyzed, and their ancestral areas were reconstructed.
The high genetic diversity of the Jeju island population of E. byunsanensis and Russian populations of E. stellata indicated these species’ northward and southward dispersal, respectively. The genetic structure analyses suggest that the populations in these four species are geographically structured to some extent, except for the Chinese E. stellata population (SCP). The phylogenetic analyses suggest that E. byunsanensis and E. pinnatifida are sister species and that Chinese SCP may not belong to E. stellata. The ancestral area reconstruction revealed that the most recent common ancestor of the four species existed in the current Chinese habitat of E. stellata.
This study shows that E. byunsanensis and E. pinnatifida originated from a southern Eranthis species and speciated into their current forms near Jeju island and near western regions of Japan, respectively, during the Miocene. E. stellata may have dispersed southward on and near the Korean peninsula, though its specific origin remains unclear. Interestingly, the Chinese E. stellata population SCP suggests that the Chinese population might be most ancient among all the four Eranthis species. E. pungdoensis may have allopatrically speciated from E. byunsanensis during the Holocene. The Korean peninsula and the surrounding areas can be considered interesting regions which provide the opportunity to observe both northern- and southern-sourced Eranthis species.
In the population genetic study for four Eranthis species, 12 chloroplast microsatellite loci (n=935 individuals) were used. The genetic differentiation, genetic distance, isolation by distance, and gene flow in these taxa were analyzed.
It was revealed that in general, population pairwise genetic differentiation is significant in four Eranthis species. It was shown that along with genetic differentiation, genetic distance is definitely affected by geographic distance. Isolation by distance established in most analyzed cases for four focal taxa. In the investigation of historical gene flow, for many cases analyzed, there existed significant gene flow between populations in the past.
In this population genetic study, the relationship between genetic differentiation or genetic distance, and geographic distance indicates that dispersal or migration is geographically restricted in the focal species. Also, this study shows that clear relationship is established between historical gene flow and genetic differentiation, even though genetic differentiation can be determined by combinations of many factors, like genetic drift and natural selection. Historical gene flow also had significant relationship with geographic distance, and the patterns and levels of gene flow were diverse and random, showing asymmetrical gene flow between populations. Overall, the characteristics of relationships between many population genetic parameters were assessed and the results of this study may present the basis for future population genetics in the genus Eranthis.
The origin and evolution of the genus Eranthis have not been previously studied. Also, population genetics in the terms of genetic differentiation and gene flow for the genus Eranthis was seldom conducted. In this study, the temporal and spatial origins and evolution of four Eranthis species - Eranthis byunsanensis, E. pungdoensis, E. stellata, and E. pinnatifida – were investigated. Diverse population genetics parameters for these species were analyzed as well. The sampling localities were Korea, Japan, Jilin in China, and the area around Vladivostok in Primorskiy, Russia.
In the study for the origin and evolution of the genus Eranthis, 12 chloroplast microsatellite loci (n=935 individuals) and two chloroplast noncoding regions (rpL16 intron, petL-psbE intergenic spacer; n=33 individuals) were utilized. The genetic diversity, genetic structure, phylogenetic relationships of the four species were analyzed, and their ancestral areas were reconstructed.
The high genetic diversity of the Jeju island population of E. byunsanensis and Russian populations of E. stellata indicated these species’ northward and southward dispersal, respectively. The genetic structure analyses suggest that the populations in these four species are geographically structured to some extent, except for the Chinese E. stellata population (SCP). The phylogenetic analyses suggest that E. byunsanensis and E. pinnatifida are sister species and that Chinese SCP may not belong to E. stellata. The ancestral area reconstruction revealed that the most recent common ancestor of the four species existed in the current Chinese habitat of E. stellata.
This study shows that E. byunsanensis and E. pinnatifida originated from a southern Eranthis species and speciated into their current forms near Jeju island and near western regions of Japan, respectively, during the Miocene. E. stellata may have dispersed southward on and near the Korean peninsula, though its specific origin remains unclear. Interestingly, the Chinese E. stellata population SCP suggests that the Chinese population might be most ancient among all the four Eranthis species. E. pungdoensis may have allopatrically speciated from E. byunsanensis during the Holocene. The Korean peninsula and the surrounding areas can be considered interesting regions which provide the opportunity to observe both northern- and southern-sourced Eranthis species.
In the population genetic study for four Eranthis species, 12 chloroplast microsatellite loci (n=935 individuals) were used. The genetic differentiation, genetic distance, isolation by distance, and gene flow in these taxa were analyzed.
It was revealed that in general, population pairwise genetic differentiation is significant in four Eranthis species. It was shown that along with genetic differentiation, genetic distance is definitely affected by geographic distance. Isolation by distance established in most analyzed cases for four focal taxa. In the investigation of historical gene flow, for many cases analyzed, there existed significant gene flow between populations in the past.
In this population genetic study, the relationship between genetic differentiation or genetic distance, and geographic distance indicates that dispersal or migration is geographically restricted in the focal species. Also, this study shows that clear relationship is established between historical gene flow and genetic differentiation, even though genetic differentiation can be determined by combinations of many factors, like genetic drift and natural selection. Historical gene flow also had significant relationship with geographic distance, and the patterns and levels of gene flow were diverse and random, showing asymmetrical gene flow between populations. Overall, the characteristics of relationships between many population genetic parameters were assessed and the results of this study may present the basis for future population genetics in the genus Eranthis.
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