Intraspecific karyotypic polymorphism is highly concordant with allozyme variation in Lysimachia mauritiana (Primulaceae: Myrsinoideae) in Taiwan: implications for the colonization history and dispersal patterns of coastal plants

Kono, Yoshiaki; Chung, Kuo‐Fang; Chen, Chih-Hui; Hoshi, Yoshikazu; Setoguchi, Hiroaki; Chou, Chang‐Hung; Oginuma, Kazuo; Peng, Ching‐I

doi:10.1093/aob/mcs192

Cited by 15 publications

(28 citation statements)

References 68 publications

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“…The karyotypic formula of the 20 (4m) cytotype (2n=20= 4m+4sm+2st+10t) was clearly distinguishable from those of other 20 (4m) cytotypes detected in Japan, i.e. JM-type (2n=20= 4m+2sm+4st+10t), MR-type (2n=20= 4m+2sm+2st+12t) and HD-type (2n=20= 4m+2sm+14t) (Kono et al 2008(Kono et al , 2010(Kono et al , 2011(Kono et al , 2013(Kono et al , 2015, and was similar to that of 20 (4m) TS cytotype grown widely in southern Taiwan including two offshore islands, the Philippines, Maui in the Hawaiian Islands and Rota of the Northern Mariana Islands (Kono et al 2012). Thus, the present study is the first report to reveal that 20 (4m) TS cytotype has also grown in Japan.…”

Section: Intraspecific Karyotypic Polymorphism and Cytogeography In Tmentioning

confidence: 72%

“…(Primulaceae), a biennial maritime plant, distributes widely in East Asia, the Philippines, Micronesia, Polynesia and the Indian Ocean islands (Iwatsuki et al 1993, Shimabuku 1997. Our serial investigations over 15 years revealed a remarkable intraspecific karyotypic polymorphism of the species: five chromosome numbers (2n=16, 17, 18, 19, 20) and 18 cytotypes in the Ryukyus (Oginuma et al 2004a, Kono et al 2008, 2010, 2013, 2015 and four chromosome numbers (2n=16, 18, 19, 20) and eight cytotypes in Taiwan (Oginuma et al 2004b, Kono et al 2012.…”

mentioning

confidence: 85%

“…Detailed cytological procedures of collecting, pretreatment, fixation, staining and chromosome observations were described in Kono et al (2012). Classifications of chromosome morphology were based on the centromere position following Levan et al (1964).…”

Section: Methodsmentioning

confidence: 99%

“…Similarly, in our serial studies of karyotypic polymorphism in L. mauritiana (Oginuma et al 2004a, 2004b, Kono et al 2008, 2010, 2012, 2013, 2015, marker chromosomes (longer metacentric chromosomes, m) and cytotype(s) were adopted for the simplification of its wide-ranging karyotypic polymorphism.…”

Section: Methodsmentioning

confidence: 99%

“…In the Daito Group, 20 (4m) TS cytotype is probably descended from sea dispersals from southern Taiwan and/or the Philippines; and 18 (4m) cytotype, from southern and/or eastern coasts on Okinawajima Is. because of its maritime habitat and buoyant capsules (Kono et al 2012).…”

Section: Intraspecific Karyotypic Polymorphism and Cytogeography In Tmentioning

confidence: 99%

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Intraspecific Karyotypic Polymorphism and Cytogeography of <i>Lysimachia mauritiana</i> (Primulaceae) on Several Islands in the Okinawa and the Daito Groups of the Ryukyu Archipelago, Japan

et al. 2016

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Summary A coastal biennial herb, Lysimachia mauritiana, exhibited remarkable intraspecific karyotypic diversity, especially in the Ryukyu Archipelago of Japan (the Ryukyus). The species displayed five chromosome numbers (2n=16, 17, 18, 19, 20) and 18 cytotypes in the Ryukyus alone. Our serial investigations elucidated that: (1) 11 cytotypes on Takarajima Island (Is.) showed the highest intra-and inter-populational cytotype polymorphism in the Ryukyus, (2) a total of 15 cytotypes was recognized and several cytotypes coexisted in every locality on Amamioshima, Kakeromajima and Tokunoshima Is., and (3) closely located two Islands of Amamioshima and Tokunoshima had different dominant cytotypes, 16 (6m) and 18 (6m), respectively. In the present study, to explore whether a similar karyotypic polymorphism exists on their neighbor islands belonging to the Okinawa and the Daito Groups, a total of 610 plants from 51 localities on 10 islands were analyzed karyomorphologically and cytogeographically. As a result, five chromosome numbers (2n=16, 17, 18, 19, 20) and 13 cytotypes were recognized in the areas. Okinawajima Is. was divided into two areas according to cytotype distribution patterns. Northern and western areas facing the East China Sea showed intra-and inter-populational polymorphism in cytotype. By contrast, southern, eastern and northeastern areas facing the Pacific Ocean showed a single cytotype in a locality. In the Daito Group, 20 (4m) TS cytotype with a wide distribution in southern Taiwan was found in Japan for the first time. The cytotype probably descended from currents of southern Taiwan and/or the Philippines.

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Section: Intraspecific Karyotypic Polymorphism and Cytogeography In Tmentioning

confidence: 72%

mentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Intraspecific Karyotypic Polymorphism and Cytogeography In Tmentioning

confidence: 99%

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Intraspecific Karyotypic Polymorphism and Cytogeography of <i>Lysimachia mauritiana</i> (Primulaceae) on Several Islands in the Okinawa and the Daito Groups of the Ryukyu Archipelago, Japan

et al. 2016

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Intraspecific divergence in a coastal plant, Euphorbia jolkinii, at a major biogeographic boundary in East Asia

Iwata,

Ito,

Park

et al. 2024

American J of Botany

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PremiseQuaternary climatic fluctuations and long‐distance seed dispersal across the sea are critical factors affecting the distribution of coastal plants, but the spatiotemporal nature of population expansion and distribution change of East Asian coastal plants during this period are rarely examined. To explore this process, we investigated the genome‐wide phylogenetic patterns of Euphorbia jolkinii Boiss. (Euphorbiaceae), which grows widely on littoral areas of Japan, Korea, and Taiwan.MethodsWe used plastome sequences and genome‐wide single nucleotide polymorphisms in samples across the species range to reveal phylogeographic patterns and spatiotemporal distributional changes. We conducted ecological niche modeling for the present and the last glacial maximum (LGM).ResultsGenetic differentiation was observed between the northern and southern populations of E. jolkinii, separated by the major biogeographic boundary, the Tokara Gap. These two groups of populations differentiated during the glacial period and subsequently intermingled in the intermorainic areas of the central Ryukyu Islands after the LGM. Ecological niche models suggested that the potential range of E. jolkinii was restricted to southern Kyushu; however, it was widespread in the southern Ryukyu Islands and Taiwan during the LGM.ConclusionsThis study provides evidence of genetic differentiation among coastal plant populations separated by the prominent biogeographical boundary. Although coastal plants are typically expected to maintain population connectivity through sea‐drifted seed dispersal, our findings suggest that genetic differences may arise because of a combination of limited gene flow and changes in climate during the glacial period.

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Phylogeography of Quercus glauca (Fagaceae), a dominant tree of East Asian subtropical evergreen forests, based on three chloroplast DNA interspace sequences

Deng

Jiang

et al. 2014

Tree Genetics & Genomes

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Historical geoclimatic events have shaped the distribution patterns and intraspecific divergence of plants. Numerous phylogeographical studies in China have focused on the Qinghai-Tibetan Plateau and surrounding areas due to the complex topography and high species diversity, but the impact of Neogene events and Quaternary climatic change on the flora of subtropical China remains poorly understood. Quercus glauca, a widespread tree of East Asian subtropical evergreen forests, has rich fossil records dating back to the Neogene, and it provides a good model to explore the impact of paleogeoclimate changes on East Asian subtropical forests. We used three chloroplast DNA (cpDNA) intergenic spacer regions and ecological niche modeling (ENM) to analyze the divergence pattern and demographic history of Q. glauca in China and Japan. A total of 33 haplotypes were detected. The phylogenetic analysis revealed two major haplotype lineages (Southwest China vs. Southeast China and East China Sea). The limited dispersal ability of seeds and complex topography resulted in the high total, inter-and intrapopulation haplotype diversity. The fossil-constrained BEAST analysis revealed a lineage diversification in the late Miocene-Pliocene. The formation of complex topography changes since Miocene in east Himalaya and adjacent area might be the key factor that triggered the intraspecific divergence of Q. glauca. Haplotype spatial distribution, ENM, mismatch distribution, and neutrality tests suggest that Q. glauca in Southeast China experiences expansion, and the current distribution in region III might be shaped by southward expansion from regions I and II after last glacial maximum (LGM). Regions I and II were the potential glacial refugia of Q. glauca.

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Intraspecific karyotypic polymorphism is highly concordant with allozyme variation in Lysimachia mauritiana (Primulaceae: Myrsinoideae) in Taiwan: implications for the colonization history and dispersal patterns of coastal plants

Abstract: The data elucidate the patterns of colonization and the effects of the Kuroshio Current on the distribution of L. mauritiana in Taiwan. These inferences are highly relevant to other coastal plant species in the region and will stimulate further studies.

Cited by 15 publications

References 68 publications

Intraspecific Karyotypic Polymorphism and Cytogeography of <i>Lysimachia mauritiana</i> (Primulaceae) on Several Islands in the Okinawa and the Daito Groups of the Ryukyu Archipelago, Japan

Intraspecific Karyotypic Polymorphism and Cytogeography of <i>Lysimachia mauritiana</i> (Primulaceae) on Several Islands in the Okinawa and the Daito Groups of the Ryukyu Archipelago, Japan

Intraspecific divergence in a coastal plant, Euphorbia jolkinii, at a major biogeographic boundary in East Asia

Phylogeography of Quercus glauca (Fagaceae), a dominant tree of East Asian subtropical evergreen forests, based on three chloroplast DNA interspace sequences

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