Fine-scale Genetic Structure among Genetic Individuals of the Clone-Forming Monotypic Genus Echinosophora koreensis (Fabaceae)

Chung, Jae Min; Lee, Byeung Cheun; Kim, Jin Seok; Park, Chong-Wook; Chung, Mi Yoon; Chung, Myong Gi

doi:10.1093/aob/mcl083

Cited by 24 publications

(30 citation statements)

References 57 publications

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“…1) in May 2004, the same as HAN-2 and YIM-1; Fig. 1) in Yanggu County; a strong genet-based FSGS was found (most clones' aggregation at less than 6-m interplant distance), presumably due to limited seed and pollen dispersal (Chung et al, 2006), together with a moderate degree of genetic differentiation between the two populations (Φ ST = 0.184).…”

Section: Study Speciesmentioning

confidence: 63%

“…In this study, we expand the previous study of Chung et al (2006) to investigate levels and distribution of genetic variation at the landscape level (in a range of ca. 6 km) in a part of Yanggu County (Fig.…”

Section: Study Speciesmentioning

confidence: 99%

“…3-5 cm long) per inflorescence bloom and are frequently visited by the bumblebee Bombus diversus diversus (Chung et al, 2006). The species is self-compatible under greenhouse conditions (Chung et al, 2006). Fruits (legumes, ca.…”

Section: Study Speciesmentioning

confidence: 99%

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Bajos niveles de variación isoenzimática en las poblaciones sureñas del arbusto endémico de Corea <em>Sophora koreensis (Fabaceae)</em>: implicaciones para su conservación

Chung

2017

Collect. Bot

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Low LeveLs of aLLozyme variation in the southern popuLations of the Korean endemic shrub Sophora koreenSiS (fabaceae): impLications for conservation.-We investigated allozyme variation of the rare shrub Sophora koreensis in Yanggu County (South Korea), at the southern margin of the species range. To gain insights into ecological processes at the landscape level, we studied two or three populations from four localities (in total, 10 populations) in a range of ca. 6 km. We found low levels of within-population genetic variation (%P = 13.6, A = 1.14, and H e = 0.026) and a moderate degree of among-population genetic differentiation (F ST = 0.203). The analysis of molecular variance (AMOVA) revealed a substantially higher percentage of variation among populations within localities (17%) than among localities (5%). There was no significant relationship between pairwise genetic divergence and logarithm of pairwise geographic distance (r = 0.032, P = 0.842). These results suggest limited gene flow between populations within localities, while indicating that the optimal strategy for the preservation of the genetic variation of S. koreensis is to conserve as many populations as possible.Key words: allozymes; conservation; genetic diversity; Korea; Sophora koreensis. Resumen bajos niveLes de variación isoenzimática en Las pobLaciones sureñas deL arbusto endémico de corea Sophora koreenSiS (Fabaceae): impLicaciones para su conservación.-Se investigó la variación isoenzimática del arbusto raro Sophora koreensis en el condado de Yanggu (Corea del Sur), en el extremo sur de su área de distribución. Para obtener información sobre los procesos ecológicos a nivel del paisaje, se estudiaron dos o tres poblaciones para cada una de las cuatro localidades (en total, 10 poblaciones) en un radio de unos 6 km. Se encontraron bajos niveles de variación genética intra-poblacional (%P = 13,6, A = 1,14 y H e = 0,026) y un grado moderado de diferenciación genética entre poblaciones (F ST = 0,203). El análisis de la varianza molecular (AMOVA) reveló un porcentaje sustancialmente mayor de variación entre poblaciones dentro cada una de las localidades (17%) que entre localidades (5%). No hubo una relación significativa entre la divergencia genética y el logaritmo de la distancia geográfica entre pares de poblaciones (r = 0,032, P = 0,842). Estos resultados sugieren un flujo genético limitado entre poblaciones dentro de las localidades, además de indicar que la mejor estrategia para la preservación de la diversidad genética de S. koreensis es la conservación del máximo número de poblaciones posible.Palabras clave: conservación; Corea; diversidad genética; isoenzimas; Sophora koreensis. INTRODUCTIONSophora koreensis Nakai (Fabaceae), endemic to the Korean Peninsula, is a deciduous broad-leaved small shrub (less than 1 m tall) narrowly distributed on lower mountain hillsides (altitude ca. 150-650 m above sea level). The species reproduces both sexually and vegetatively via rhizomes. Until recently it was included in its own genus, Echino...

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Section: Study Speciesmentioning

confidence: 63%

Section: Study Speciesmentioning

confidence: 99%

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Bajos niveles de variación isoenzimática en las poblaciones sureñas del arbusto endémico de Corea <em>Sophora koreensis (Fabaceae)</em>: implicaciones para su conservación

Chung

2017

Collect. Bot

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“…Samples of fourteen populations (PN1, 3, 5-12, 16, 17, 21, 27) were collected in this region. This group includes populations from the city of Vilnius (5 populations -PN3, 5,11,16,19) and its outskirts (5 populations -PN1, 6,8,10,12). These populations form the putative focus of the oldest invasion [23].…”

Section: Methodsmentioning

confidence: 99%

“…Clonal reproduction is widely spread among invasive plant species. Mechanisms of clonal reproduction include vegetative spread, production of bulbils and apomictic seeds [5,6]. Reduced genetic variability is typically found in such populations of invasive species, due to marked founder effects and reproductive systems limiting the diversity of genotype [7].…”

Section: Introductionmentioning

confidence: 99%

Clonal structure and reduced diversity of the invasive alien plant Erigeron annuus in Lithuania

et al. 2013

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The alien species Erigeron annuus (L.) Pers. is in an intensive spreading phase in Lithuania. Random amplified polymorphic DNA (RAPDs) and inter-simple sequence repeats (ISSRs) assays were used to study the genetic structure of old and new invasive populations and to determine the most spread genotypes of this species in Lithuania. Pairwise genetic distances between populations established using RAPD and ISSR markers significantly correlated (r=0.91, P<0.05). Our study indicates that there are two genetically different types of E. annuus populations. The first type is represented by a widely spread main clone and related monomorphic populations. The second type is represented by polymorphic populations, some of them present at sites where E. annuus has not been previously observed. Main clone predominates in nine populations and is from the region where this species was first described in natural ecosystems of Lithuania. UPGMA cluster analysis revealed genetic relationships between the main clone and accessions from old cemeteries where E. annuus has been grown as an ornamental plant. We found high genetic differentiation among populations (G ST=0.58 for RAPDs, G ST=0.64 for ISSRs). Taken together, our results will contribute to the monitoring of E. annuus spread in Lithuania.

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Fine‐scale hierarchical genetic structure and kinship analysis of the ascidianPyura chilensisin the southeastern Pacific

Morales-González

Giles

Quesada-Calderón

et al. 2019

Ecology and Evolution

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Studying population structure and genetic diversity at fine spatial scales is key for a better understanding of demographic processes that influence population connectivity. This is particularly important in marine benthic organisms that rely on larval dispersal to maintain connectivity among populations. Here, we report the results of a genetic survey of the ascidian Pyura chilensis from three localities along the southeastern Pacific. This study follows up on a previous report that described a genetic break in this region among localities only 20 km apart. By implementing a hierarchical sampling design at four spatial levels and using ten polymorphic microsatellite markers, we test whether differences in fine‐scale population structure explain the previously reported genetic break. We compared genetic spatial autocorrelations, as well as kinship and relatedness distributions within and among localities adjacent to the genetic break. We found no evidence of significant autocorrelation at the scale up to 50 m despite the low dispersal potential of P. chilensis that has been reported in the literature. We also found that the proportion of related individuals in close proximity (<1 km) was higher than the proportion of related individuals further apart. These results were consistent in the three localities. Our results suggest that the spatial distribution of related individuals can be nonrandom at small spatial scales and suggests that dispersal might be occasionally limited in this species or that larval cohorts can disperse in the plankton as clustered groups. Overall, this study sheds light on new aspects of the life of this ascidian as well as confirms the presence of a genetic break at 39°S latitude. Also, our data indicate there is not enough evidence to confirm that this genetic break can be explained by differences in fine‐scale genetic patterns among localities.

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Fine-scale Genetic Structure among Genetic Individuals of the Clone-Forming Monotypic Genus Echinosophora koreensis (Fabaceae)

Cited by 24 publications

References 57 publications

Bajos niveles de variación isoenzimática en las poblaciones sureñas del arbusto endémico de Corea <em>Sophora koreensis (Fabaceae)</em>: implicaciones para su conservación

Bajos niveles de variación isoenzimática en las poblaciones sureñas del arbusto endémico de Corea <em>Sophora koreensis (Fabaceae)</em>: implicaciones para su conservación

Clonal structure and reduced diversity of the invasive alien plant Erigeron annuus in Lithuania

Fine‐scale hierarchical genetic structure and kinship analysis of the ascidianPyura chilensisin the southeastern Pacific

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