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Ikeda H. Virtual issue: phylogeographic studies in the Japanese Archipelago: from geographic patterns of genetic variation to biodiversity in plants. JOURNAL OF PLANT RESEARCH 2023; 136:581-585. [PMID: 37462882 DOI: 10.1007/s10265-023-01478-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 06/29/2023] [Indexed: 08/12/2023]
Abstract
Phylogeographic studies have investigated genetic variation and structure within species or closely related lineages and are fundamental for understanding factors and processes of genetic divergence as well as speciation. This virtual issue collects 35 papers on phylogeographic studies published in the Journal of Plant Research and focuses on three major topics in biodiversity: (1) biogeography, (2) systematics, and (3) evolution.
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Affiliation(s)
- Hajime Ikeda
- Institute of Plant Science and Resources, Okayama University, 2-20-1 Chuo, Kurashiki, Okayama, 710-0046, Japan.
- Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Tokyo, Meguro-ku, 153-8902, Japan.
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Han EK, Tamaki I, Oh SH, Park JS, Cho WB, Jin DP, Kim BY, Yang S, Son DC, Choi HJ, Gantsetseg A, Isagi Y, Lee JH. Genetic and demographic signatures accompanying the evolution of the selfing syndrome in Daphne kiusiana, an evergreen shrub. ANNALS OF BOTANY 2023; 131:751-767. [PMID: 36469429 PMCID: PMC10184445 DOI: 10.1093/aob/mcac142] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 11/23/2022] [Indexed: 05/16/2023]
Abstract
BACKGROUND AND AIMS The evolution of mating systems from outcrossing to self-fertilization is a common transition in flowering plants. This shift is often associated with the 'selfing syndrome', which is characterized by less visible flowers with functional changes to control outcrossing. In most cases, the evolutionary history and demographic dynamics underlying the evolution of the selfing syndrome remain poorly understood. METHODS Here, we characterize differences in the demographic genetic consequences and associated floral-specific traits between two distinct geographical groups of a wild shrub, Daphne kiusiana, endemic to East Asia; plants in the eastern region (southeastern Korea and Kyushu, Japan) exhibit smaller and fewer flowers compared to those of plants in the western region (southwestern Korea). Genetic analyses were conducted using nuclear microsatellites and chloroplast DNA (multiplexed phylogenetic marker sequencing) datasets. KEY RESULTS A high selfing rate with significantly increased homozygosity characterized the eastern lineage, associated with lower levels of visibility and herkogamy in the floral traits. The two lineages harboured independent phylogeographical histories. In contrast to the western lineage, the eastern lineage showed a gradual reduction in the effective population size with no signs of a severe bottleneck despite its extreme range contraction during the last glacial period. CONCLUSIONS Our results suggest that the selfing-associated morphological changes in D. kiusiana are of relatively old origin (at least 100 000 years ago) and were driven by directional selection for efficient self-pollination. We provide evidence that the evolution of the selfing syndrome in D. kiusiana is not strongly associated with a severe population bottleneck.
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Affiliation(s)
- Eun-Kyeong Han
- Department of Biology Education, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ichiro Tamaki
- Gifu Academy of Forest Science and Culture, 88 Sodai, Mino, Gifu 501-3714, Japan
| | - Sang-Hun Oh
- Department of Biology, Daejeon University, Daejeon 34520, Republic of Korea
| | - Jong-Soo Park
- Department of Botany, Honam National Institute of Biological Resources, Mokpo 58762, Republic of Korea
| | - Won-Bum Cho
- Department of Plant Variety Protection, National Forest Seed and Variety Center, Chungju 27495, Republic of Korea
| | - Dong-Pil Jin
- Urban Biodiversity Research Division, Sejong National Arboretum, Sejong 30106, Republic of Korea
| | - Bo-Yun Kim
- Plant Resources Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Sungyu Yang
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju 58245, Republic of Korea
| | - Dong Chan Son
- Division of Forest Biodiversity and Herbarium, Korea National Arboretum, Pocheon 11186, Republic of Korea
| | - Hyeok-Jae Choi
- Department of Biology and Chemistry, Changwon National University, Changwon 51140, Republic of Korea
| | - Amarsanaa Gantsetseg
- Department of Biology Education, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Yuji Isagi
- Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Jung-Hyun Lee
- Department of Biology Education, Chonnam National University, Gwangju 61186, Republic of Korea
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Yang F, Cai L, Dao Z, Sun W. Genomic Data Reveals Population Genetic and Demographic History of Magnolia fistulosa (Magnoliaceae), a Plant Species With Extremely Small Populations in Yunnan Province, China. FRONTIERS IN PLANT SCIENCE 2022; 13:811312. [PMID: 35251084 PMCID: PMC8892343 DOI: 10.3389/fpls.2022.811312] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/13/2022] [Indexed: 05/11/2023]
Abstract
Elucidating the genetic background of threatened species is fundamental to their management and conservation, and investigating the demographic history of these species is helpful in the determination of the threats facing them. The woody species of the genus Magnolia (Magnoliaceae) have high economic, scientific and ecological values. Although nearly half of all Magnolia species have been evaluated as threatened, to date there has been no population genetic study employing Next Generation Sequencing (NGS) technology in this genus. In the present study, we investigate the conservation genomics of Magnolia fistulosa, a threatened species endemic to the limestone area along the Sino-Vietnamese border, using a double digest restriction-site-associated DNA-sequencing (ddRAD-seq) approach. To increase the reliability of our statistical inferences, we employed two approaches, Stacks and ipyrad, for SNP calling. A total of 15,272 and 18,960, respectively, putatively neutral SNPs were generated by Stacks and ipyrad. Relatively high genetic diversity and large population divergence were detected in M. fistulosa. Although higher absolute values were calculated using the ipyrad data set, the two data sets showed the same trends in genetic diversity (π, H e), population differentiation (F ST) and inbreeding coefficients (F IS). A change in the effective population size of M. fistulosa within the last 1 Ma was detected, including a population decline about 0.5-0.8 Ma ago, a bottleneck event about 0.2-0.3 Ma ago, population fluctuations during the last glacial stage, and the recovery of effective population size after the last glacial maximum. Our findings not only lay the foundation for the future conservation of this species, but also provide new insights into the evolutionary history of the genus Magnolia in southeastern Yunnan, China.
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Affiliation(s)
- Fengmao Yang
- Yunnan Key Laboratory for Integrative Conservation of Plant Species With Extremely Small Populations, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- University of the Chinese Academy of Sciences, Beijing, China
| | - Lei Cai
- Yunnan Key Laboratory for Integrative Conservation of Plant Species With Extremely Small Populations, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Zhiling Dao
- Yunnan Key Laboratory for Integrative Conservation of Plant Species With Extremely Small Populations, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Weibang Sun
- Yunnan Key Laboratory for Integrative Conservation of Plant Species With Extremely Small Populations, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
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Genetic structure and temporal environmental niche dynamics of sideoats grama [Bouteloua curtipendula (Michx.) Torr.] populations in Mexico. PLoS One 2021; 16:e0254566. [PMID: 34264989 PMCID: PMC8282060 DOI: 10.1371/journal.pone.0254566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/29/2021] [Indexed: 11/19/2022] Open
Abstract
In the past years, several plant breeding programs have been done to select outstanding genotypes of sideoats grama (Bouteloua curtipendula) for restoration purposes. Such programs have been focused mainly on agronomic traits; however, little attention has been paid to the genetic structure and environmental adaptation of the selected genotypes. Thus, in this study we evaluated the genetic structure of 85 sideoats grama populations in Mexico. In addition, we modeled the past, present and future environmental niche of the genetic clusters of this species. Ninety sideoats grama populations were genetically analyzed through AFLP (Amplified Fragment Length Polymorphisms) markers. The environmental niche of the population clusters was modeled by using the maximum entropy method. The genetic analysis separated the populations into two genetically different clusters (p = 0.0003). The differentiation of these lineages can be partially explained by the paleoclimatic events experienced during the last interglacial and glacial maximums. Consequently, the genetic clusters have different environmental niche at the present time. Suitability areas for the distribution of Cluster I are mainly located in the central part of the country while the environmental niche of Cluster II is located in the semiarid region, close to the mountain range of the Sierra Madre Occidental. Thus, selection and restoration programs with sideoats grama must be carried out using local germplasm from each environmental niche. Given the environmental niche of both genetic clusters will suffer changes in the near and mid-century future, climate change must be considered for genotypes selection and restoration programs.
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Comparative Mitogenomic Analysis Reveals Gene and Intron Dynamics in Rubiaceae and Intra-Specific Diversification in Damnacanthus indicus. Int J Mol Sci 2021; 22:ijms22137237. [PMID: 34281291 PMCID: PMC8268409 DOI: 10.3390/ijms22137237] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/24/2021] [Accepted: 07/01/2021] [Indexed: 12/20/2022] Open
Abstract
The dynamic evolution of mitochondrial gene and intron content has been reported across the angiosperms. However, a reference mitochondrial genome (mitogenome) is not available in Rubiaceae. The phylogenetic utility of mitogenome data at a species level is rarely assessed. Here, we assembled mitogenomes of six Damnacanthus indicus (Rubiaceae, Rubioideae) representing two varieties (var. indicus and var. microphyllus). The gene and intron content of D. indicus was compared with mitogenomes from representative angiosperm species and mitochondrial contigs from the other Rubiaceae species. Mitogenome structural rearrangement and sequence divergence in D. indicus were analyzed in six individuals. The size of the mitogenome in D. indicus varied from 417,661 to 419,435 bp. Comparing the number of intact mitochondrial protein-coding genes in other Gentianales taxa (38), D. indicus included 32 genes representing several losses. The intron analysis revealed a shift from cis to trans splicing of a nad1 intron (nad1i728) in D. indicus and it is a shared character with the other four Rubioideae taxa. Two distinct mitogenome structures (type A and B) were identified. Two-step direct repeat-mediated recombination was proposed to explain structural changes between type A and B mitogenomes. The five individuals from two varieties in D. indicus diverged well in the whole mitogenome-level comparison with one exception. Collectively, our study elucidated the mitogenome evolution in Rubiaceae along with D. indicus and showed the reliable phylogenetic utility of the whole mitogenome data at a species-level evolution.
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Jin DP, Park JS, Choi BH. Historical migration and taxonomic entity of Korean endemic shrub Lespedeza maritima (Fabaceae) based on microsatellite loci. AOB PLANTS 2021; 13:plab009. [PMID: 33767807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Various plant species are endemic to the Korean Peninsula, but their evolutionary divergence and establishment are poorly understood. One of these, Lespedeza maritima, has been proposed as either a hybrid (L. cyrtobotrya × L. maximowiczii) or a synonym of L. thunbergii. A distinct taxon, L. uekii, has been proposed for inland populations. We investigated genetic diversity and structure in L. maritima and related taxa to resolve this. Genotypes of L. maritima (n = 244, including L. uekii) were determined using 12 microsatellite loci, then compared with those of related species. Genetic diversity within L. maritima was estimated, and Bayesian clustering analysis was used to represent its genetic structure and that of related taxa. Its distribution during the last glacial maximum (LGM) was predicted using ecological niche modelling (ENM). Neighbour-joining (NJ) analysis and principal coordinate analysis (PCoA) were used to investigate relationships among species. Bayesian tree based on nuclear ribosomal internal transcribed spacers (nrITS) was also reconstructed to show relationships and divergence time among species. Morphological features were examined using flower characteristics. In result, expected heterozygosity (H E) and allelic richness (A R) within L. maritima were higher in southern than northern populations. Bayesian clustering analysis largely assigned populations to two clusters (K = 2) (south vs. north). The ENM showed that L. maritima occurred around the East China Sea and Korean Strait land bridge during the LGM. Compared with other Lespedeza species, L. maritima was assigned to an independent cluster (K = 2-5), supported by the NJ, PCoA, Bayesian tree and morphological examination results. Lespedeza maritima and L. uekii were clustered to one clade on Bayesian tree. Given results, current L. maritima populations derive from post-LGM colonization away from southern refugia. The type L. uekii, which grows inland, is thought synonym of L. maritima. In addition, L. maritima is considered a distinct species, compared with related taxa.
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Affiliation(s)
- Dong-Pil Jin
- Department of Biological Sciences, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea
| | - Jong-Soo Park
- Department of Biological Sciences, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea
| | - Byoung-Hee Choi
- Department of Biological Sciences, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea
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Jin DP, Park JS, Choi BH. Historical migration and taxonomic entity of Korean endemic shrub Lespedeza maritima (Fabaceae) based on microsatellite loci. AOB PLANTS 2021; 13:plab009. [PMID: 33767807 PMCID: PMC7983312 DOI: 10.1093/aobpla/plab009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 02/11/2021] [Indexed: 07/06/2023]
Abstract
Various plant species are endemic to the Korean Peninsula, but their evolutionary divergence and establishment are poorly understood. One of these, Lespedeza maritima, has been proposed as either a hybrid (L. cyrtobotrya × L. maximowiczii) or a synonym of L. thunbergii. A distinct taxon, L. uekii, has been proposed for inland populations. We investigated genetic diversity and structure in L. maritima and related taxa to resolve this. Genotypes of L. maritima (n = 244, including L. uekii) were determined using 12 microsatellite loci, then compared with those of related species. Genetic diversity within L. maritima was estimated, and Bayesian clustering analysis was used to represent its genetic structure and that of related taxa. Its distribution during the last glacial maximum (LGM) was predicted using ecological niche modelling (ENM). Neighbour-joining (NJ) analysis and principal coordinate analysis (PCoA) were used to investigate relationships among species. Bayesian tree based on nuclear ribosomal internal transcribed spacers (nrITS) was also reconstructed to show relationships and divergence time among species. Morphological features were examined using flower characteristics. In result, expected heterozygosity (H E) and allelic richness (A R) within L. maritima were higher in southern than northern populations. Bayesian clustering analysis largely assigned populations to two clusters (K = 2) (south vs. north). The ENM showed that L. maritima occurred around the East China Sea and Korean Strait land bridge during the LGM. Compared with other Lespedeza species, L. maritima was assigned to an independent cluster (K = 2-5), supported by the NJ, PCoA, Bayesian tree and morphological examination results. Lespedeza maritima and L. uekii were clustered to one clade on Bayesian tree. Given results, current L. maritima populations derive from post-LGM colonization away from southern refugia. The type L. uekii, which grows inland, is thought synonym of L. maritima. In addition, L. maritima is considered a distinct species, compared with related taxa.
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Affiliation(s)
- Dong-Pil Jin
- Department of Biological Sciences, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea
| | - Jong-Soo Park
- Department of Biological Sciences, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea
| | - Byoung-Hee Choi
- Department of Biological Sciences, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea
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Fan XR, Wagutu GK, Wen XY, Chen SL, Liu YL, Chen YY. Decreasing genetic connectivity in the endangered tree Magnolia patungensis in fragmented forests. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e01227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Cho W, So S, Han E, Myeong H, Park J, Hwang S, Kim J, Lee J. Rear-edge, low-diversity, and haplotypic uniformity in cold-adapted Bupleurum euphorbioides interglacial refugia populations. Ecol Evol 2020; 10:10449-10462. [PMID: 33072272 PMCID: PMC7548181 DOI: 10.1002/ece3.6700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 11/30/2022] Open
Abstract
The high genetic diversity of rear-edge refugia populations is predicted to have resulted from species repeatedly migrating to low latitudes during glacial periods over the course of Quaternary climate change. However, several recent empirical studies of cold-tolerant plants revealed the opposite pattern. We investigated whether current habitats of the cold-adapted and range-restricted Bupleurum euphorbioides in the Baekdudaegan, South Korea, and North Korea could be interglacial refugia, and documented how their rear-edge populations differ genetically from those of typical temperate species. Phylogeographic analysis and ecological niche modeling (ENM) were used. The genetic structure was analyzed using microsatellite markers and chloroplast DNA sequences. The congener B. longiradiatum was included as a typical temperate plant species. Despite having almost identical life history traits, these congeneric species exhibited contrasting patterns of genetic diversity. ENM revealed an apparent maximum range contraction during the last interglacial. In contrast, its range expanded northward to the Russian Far East (Primorsky) during the Last Glacial Maximum. Thus, we hypothesize that B. euphorbioides retreated to its current refugia during interglacial periods. Unlike populations in the central region, the rear-edge populations were genetically impoverished and uniform, both within populations and in pooled regional populations. The rear-edge B. euphorbioides survived at least one past interglacial, contributing to the species' genetic diversity. We believe that such genetic variation in the cold-adapted B. euphorbioides gives the species the necessary adaptations to survive an upcoming favorable environment (the next glacial), unless there is artificial environmental change.
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Affiliation(s)
- Won‐Bum Cho
- Department of Biology EducationChonnam National UniversityGwangjuKorea
| | - Soonku So
- Ecosystem Research DivisionKorea National Park Research InstituteWonjuKorea
| | - Eun‐Kyeong Han
- Department of Biological Sciences and BiotechnologyChonnam National UniversityGwangjuKorea
| | - Hyeon‐Ho Myeong
- Ecosystem Research DivisionKorea National Park Research InstituteWonjuKorea
| | - Jong‐Soo Park
- Department of Biological SciencesInha UniversityIncheonKorea
| | | | - Joo‐Hwan Kim
- Department of Life ScienceGachon UniversitySeongnam‐siKorea
| | - Jung‐Hyun Lee
- Department of Biology EducationChonnam National UniversityGwangjuKorea
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Han EK, Cho WB, Park JS, Choi IS, Kwak M, Kim BY, Lee JH. A Disjunctive Marginal Edge of Evergreen Broad-Leaved Oak ( Quercus gilva) in East Asia: The High Genetic Distinctiveness and Unusual Diversity of Jeju Island Populations and Insight into a Massive, Independent Postglacial Colonization. Genes (Basel) 2020; 11:E1114. [PMID: 32977695 PMCID: PMC7598624 DOI: 10.3390/genes11101114] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/17/2020] [Accepted: 09/22/2020] [Indexed: 11/16/2022] Open
Abstract
Jeju Island is located at a marginal edge of the distributional range of East Asian evergreen broad-leaved forests. The low genetic diversity of such edge populations is predicted to have resulted from genetic drift and reduced gene flow when compared to core populations. To test this hypothesis, we examined the levels of genetic diversity of marginal-edge populations of Quercus gilva, restricted to a few habitats on Jeju Island, and compared them with the southern Kyushu populations. We also evaluated their evolutionary potential and conservation value. The genetic diversity and structure were analyzed using 40 polymorphic microsatellite markers developed in this study. Ecological Niche Modeling (ENM) has been employed to develop our insights, which can be inferred from historical distribution changes. Contrary to our expectations, we detected a similar level of genetic diversity in the Jeju populations, comparable to that of the southern Kyushu populations, which have been regarded as long-term glacial refugia with a high genetic variability of East Asian evergreen trees. We found no signatures of recent bottlenecks in the Jeju populations. The results of STRUCTURE, neighbor-joining phylogeny, and Principal Coordinate Analysis (PCoA) with a significant barrier clearly demonstrated that the Jeju and Kyushu regions are genetically distinct. However, ENM showed that the probability value for the distribution of the trees on Jeju Island during the Last Glacial Maximum (LGM) converge was zero. In consideration of these results, we hypothesize that independent massive postglacial colonization from a separate large genetic source, other than Kyushu, could have led to the current genetic diversity of Jeju Island. Therefore, we suggest that the Jeju populations deserve to be separately managed and designated as a level of management unit (MU). These findings improve our understanding of the paleovegetation of East Asian evergreen forests, and the microevolution of oaks.
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Affiliation(s)
- Eun-Kyeong Han
- Department of Biological Sciences and Biotechnology, Chonnam National University, Gwangju 61186, Korea;
| | - Won-Bum Cho
- Department of Biology Education, Chonnam National University, Gwangju 61186, Korea;
| | - Jong-Soo Park
- Department of Biological Sciences, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, Korea;
| | - In-Su Choi
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA;
| | - Myounghai Kwak
- Biological and Genetic Resources Utilization Division, National Institute of Biological Resources, Incheon 22689, Korea;
| | - Bo-Yun Kim
- Plant Resources Division, National Institute of Biological Resources, Incheon 22689, Korea;
| | - Jung-Hyun Lee
- Department of Biology Education, Chonnam National University, Gwangju 61186, Korea;
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