Eranthis pungdoensis B.U. Oh: A new species of Eranthis (Ranunculaceae) from Korea

Oh, Byoung Un; Ji, Seong Jin

doi:10.11110/kjpt.2009.39.2.086

Cited by 9 publications

(8 citation statements)

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“…This genus is composed of approximately 13 species, which are distributed from Europe to East Asia (Erst, Sukhorukov, et al, 2020 ; Erst et al, 2020b ; Mabberley, 1993 ; Rukšāns, 2018 ; Tamura, 1990 ; Wang et al, 2001 ). This genus comprises relatively short plants (5–15 cm above ground) with tuberous rhizomes, palmately divided leaves and bracts, solitary flowers, and petaloid sepals (Oh & Ji, 2009 ; Sun et al, 1993 ). The life history and ecology of this genus have only been characterized in some species.…”

Section: Introductionmentioning

confidence: 99%

Genetic differentiation that is exceptionally high and unexpectedly sensitive to geographic distance in the absence of gene flow: Insights from the genus Eranthis in East Asian regions

2022

Ecology and Evolution

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Genetic differentiation between populations is determined by various factors, including gene flow, selection, mutation, and genetic drift. Among these, gene flow is known to counter genetic differentiation. The genus Eranthis , an early flowering perennial herb, can serve as a good model to study genetic differentiation and gene flow due to its easily detectable population characteristics and known reproductive strategies, which can be associated with gene flow patterns. Eranthis populations are typically small and geographically separated from the others. Moreover, previous studies and our own observations suggest that seed and pollen dispersal between Eranthis populations is highly unlikely and therefore, currently, gene flow may not be probable in this genus. Based on these premises, we hypothesized that the genetic differentiation between the Eranthis populations would be significant, and that the genetic differentiation would not sensitively reflect geographic distance in the absence of gene flow. To test these hypotheses, genetic differentiation, genetic distance, isolation by distance, historical gene flow, and bottlenecks were analyzed in four species of this genus. Genetic differentiation was significantly high, and in many cases, extremely high. Moreover, genetic differentiation and geographic distance were positively correlated in most cases. We provide possible explanations for these observations. First, we suggest that the combination of the marker type used in our study (chloroplast microsatellites), genetic drift, and possibly selection might have resulted in the extremely high genetic differentiation observed herein. Additionally, we provide the possibility that genetic distance reflects geographic distance through historical gene flow, or adaptation in the absence of historical gene flow. Nevertheless, our explanations can be more rigorously examined and further refined through additional observations and various population genetic analyses. In particular, we suggest that other accessible populations of the genus Eranthis should be included in future studies to better characterize the intriguing population dynamics of this genus.

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Section: Introductionmentioning

confidence: 99%

Genetic differentiation that is exceptionally high and unexpectedly sensitive to geographic distance in the absence of gene flow: Insights from the genus Eranthis in East Asian regions

2022

Ecology and Evolution

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“…In the Holocene, when sea level rose and Pungdo became isolated, the gene flow between Pungdo and the Korean peninsula was blocked, and this may have facilitated the allopatric speciation of E. pungdoensis . Morphologically, E. pungdoensis has larger petals than E. byunsanensis , however, there is no other clear difference between these two species (Oh & Ji, ; Figure a,b). This slight difference is consistent with the short period of genetic isolation.…”

Section: Discussionmentioning

confidence: 95%

“…Eranthis species are morphologically clustered into two groups: one with yellow sepals ranging from Western Europe to Central Asia, and the other with white sepals ranging from Central China to Russia, Korea, and Japan. Here, we focus on four Eranthis species with white sepals: (a) Eranthis stellata , found all across the Korean peninsula, in Jilin and Liaoning in China, in the western land near the Sea of Okhotsk and in Primorskiy Krai, in eastern‐most Russia; (b) Eranthis pinnatifida , endemic to Japan and found in the central and southern areas of Honshu; (c) E. byunsanensis , endemic to Korea and found across the Korean peninsula, with its northern limit possibly in North Korea; and (d) E. pungdoensis , endemic to Korea and found only on the small island of Pungdo in the Yellow Sea (Oh & Ji, ; Oh et al, ; Sun, Kim, & Kim, ). We analyzed 12 chloroplast microsatellites and two chloroplast noncoding regions in these species, looking specifically at (a) the genetic diversity of the populations of each species; (b) the genetic structure of each species; (c) phylogenetic reconstructions at both population and species levels; (d) the divergence times for each lineage and species; and (e) ancestral area reconstructions.…”

Section: Introductionmentioning

confidence: 99%

The speciation history of northern‐ and southern‐sourced Eranthis (Ranunculaceae) species on the Korean peninsula and surrounding areas

2019

Ecology and Evolution

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The temporal and spatial origins and evolution of the genus Eranthis have not been previously studied. We investigated the speciation and establishment histories of four Eranthis species: Eranthis byunsanensis , E. pungdoensis , E. stellata , and E. pinnatifida . The sampling localities were Korea, Japan, Jilin in China, and the area near Vladivostok in Primorskiy, Russia. We used 12 chloroplast microsatellite loci ( n = 935 individuals) and two chloroplast noncoding regions ( rpl16 intron, petL ‐ psbE intergenic spacer; n = 33 individuals). 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 have limited geographical structure, 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.

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“…Недавно были описаны два новых вида из Кореи -E. byunsanensis B. Y. Sun и E. pungdoensis B. U. Oh (Sun et al, 1993;Oh, Ji, 2009). Таким образом, в настоящее время род включает 10 видов, распространенных в умеренных регионах Евразии (Li, 1995;Wang et al, 2001).…”

Section: Introductionunclassified

Кариосистематическое изучение рода Eranthis Salisb. (Ranunculaceae)

Митренина¹,

Erst²

2019

bpssm

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Изучены кариотипы четырех видов рода Eranthis: E. hyemalis, E. lobulata, E. longistipitata и E. stellata. Для E. lobulata и E. longistipitata данное исследование выполнено впервые. Все изученные образцы имелисоматическое число хромосом 2n = 16. Кариотипы исследованных видов содержат пять пар равноплечих (метацентрических) хромосом и три пары неравноплечих (субметацентрических, субтелоцентрических, телоцентрических) хромосом. Основное различие хромосомных наборов данных видов заключается в типах неравноплечиххромосом. Различия в кариоморфологических параметрах у изученных видов согласуются с разделением рода насекции по морфологическим признакам.

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Eranthis pungdoensis B.U. Oh: A new species of Eranthis (Ranunculaceae) from Korea

Cited by 9 publications

References 0 publications

Genetic differentiation that is exceptionally high and unexpectedly sensitive to geographic distance in the absence of gene flow: Insights from the genus Eranthis in East Asian regions

Genetic differentiation that is exceptionally high and unexpectedly sensitive to geographic distance in the absence of gene flow: Insights from the genus Eranthis in East Asian regions

The speciation history of northern‐ and southern‐sourced Eranthis (Ranunculaceae) species on the Korean peninsula and surrounding areas

Кариосистематическое изучение рода Eranthis Salisb. (Ranunculaceae)

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