Genetic diversity in the two endangered endemic species Kirengeshoma koreana (Hydrangeaceae) and Parasenecio pseudotaimingasa (Asteraceae) from Korea: Insights into population history and implications for conservation

Chung, Mi Yoon; Moon, Myung-Ok; López‐Pujol, Jordi; Chung, Jae Min; Chung, Myong Gi

doi:10.1016/j.bse.2013.08.017

Cited by 12 publications

(8 citation statements)

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“…It should be noted at this point that JNP and its vicinity belong to a mountainous branch (the Nakdongjeongmaek) of the Baekdudaegan (a sort of “backbone” of the mountain ranges of the Korean Peninsula). The Baekdudaegan and its associated ranges (such as the Nakdongjeongmaek) have been proposed as harboring multiple refugia for a large number of species belonging to the boreal and temperate flora in the Peninsula—either endemic, regionally distributed, or widespread—based on a common pattern of high levels of genetic diversity (Chung et al, 2012, 2013a, b, c, 2014). Some examples, in addition to the two Sedum species studied here, may corroborate the role of the Nakdongjeongmaek as a suitable glacial refugium for Korean native plant species.…”

Section: Discussionmentioning

confidence: 99%

Comparative genetic structure betweenSedum ussurienseandS. kamtschaticum(Crassulaceae), two stonecrops co‐occurring on rocky cliffs

Chung

López‐Pujol

2014

American J of Botany

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• Premise of the study: Geographic isolation due to discontinuities of suitable habitat may have significant effects on the genetic structure of plant populations. Even within a few kilometers, physical barriers to gene flow may lead to considerable genetic differentiation among populations.• Methods: Sedum ussuriense is a boreal species that in Korea occurs only in four valleys separated by mountain ranges in Juwangsan National Park and its vicinity (a range of ∼15 km). Its congener S. kamtschaticum, by contrast, co-occurs in the four valleys but also on the intervening mountains. Using 12 allozyme loci, we comparatively assessed genetic variability and structure in 12 population pairs of the two stonecrops.• Key results: While we found high and comparable levels of within-population genetic variation for the two species, among-population divergence was significantly higher in S. ussuriense (F = 0.261 vs. F = 0.165). Sedum ussuriense also showed a much higher percentage of among-valley variation (19%) than S. kamtschaticum (4%).• Conclusions: High levels of genetic diversity in the two Sedum species are consistent with the previous hypothesis that mountains of the Korean Peninsula served as glacial refugia for many boreal species. Given that the two congeners have similar life-history traits, the lower among-population differentiation in S. kamtschaticum is attributable to its higher abundance and more continuous distribution in the study area. This study confirms the central role of geographic isolation in the genetic structure of plant species even at very small scales.

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Section: Discussionmentioning

confidence: 99%

Comparative genetic structure betweenSedum ussurienseandS. kamtschaticum(Crassulaceae), two stonecrops co‐occurring on rocky cliffs

Chung

López‐Pujol

2014

American J of Botany

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“…Such differences are probably related to the ecological characteristics of each species. Similar to G. microrrhynchum populations, Kirengeshoma koreana populations also survived in small isolated microrefugia, exhibit low levels of genetic diversity, high levels of genetic differentiation, and low levels of gene flow among them (Chung et al, 2013). Therefore, the ecological traits of G. microrrhynchum probably contributed to the species' survival in small and isolated microrefugia in Baekdudaegan during the Ice Age, like K. koreana.…”

Section: Natural History Of G Microrrhynchum Populationsmentioning

confidence: 92%

“…The very low gene flow value obtained in the present study is consistent with the results of Chang et al (2004) using allozymes. However, other authors have noted that most glacial relict species inhabiting the Korean Peninsula survived in large and stable macrorefugia within the Baekdudaegan area, as these plant species exhibited high genetic diversity within populations and low genetic differentiation (Chung et al, 2001(Chung et al, , 2009(Chung et al, , 2012(Chung et al, , 2013. Such differences are probably related to the ecological characteristics of each species.…”

Section: Natural History Of G Microrrhynchum Populationsmentioning

confidence: 93%

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Conservation implications of the genetic diversity of Gymnospermium microrrhynchum in Korea

2016

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ABSTRACT. Gymnospermium microrrhynchum (Berberidaceae) is an ephemeral perennial herb with a limited distributional range in the Baekdudaegan mountain areas of the Korean Peninsula, and is designated a rare plant by the Korean Forest Service. Information about its genetic variation and structure is important for developing successful conservation strategies. To investigate the genetic variation within and among seven G. microrrhynchum populations, random amplified polymorphic DNA data were obtained for 207 individuals. The populations exhibited relatively low genetic diversity: the percentage of polymorphic bands (PPB) ranged from 32.1 to 66.7% (mean = 51.4%) and Nei's gene diversity (H E ) ranged from 0.116 to 0.248 (mean = 0.188). However, genetic diversity at the species level was relatively high (PPB = 98.7%, H E = 0.349). An analysis of molecular variance revealed high differentiation among populations (F ST = 0.6818), but the low gene flow value (N m = 0.117) suggests a low level of gene exchange occurs among populations. Principal coordinates analysis revealed that individuals were separated according to population. The high level of genetic differentiation and restricted gene flow among G. microrrhynchum populations, which resulted from their isolation in alpine areas after the Ice Age, indicates that it is essential to protect and manage all populations, rather than focus on specific populations, in order to maintain the genetic diversity of this species.

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“…Phylogeography, an approach to study the processes that shape the geographical distribution patterns of genealogical lineages (Avise and Walker , Avise ), can provide valuable biological information to conservation biology for endangered species, such information about genetic diversity, population structure, and Evolutionarily Significant Units (ESU), which are essential for developing useful conservation strategies and actions (Avise et al , Moritz , , Pope et al , Osborne et al ). The use of this kind of research has become increasingly popular in biological conservation in recent years (Ge et al , Chung et al , Beatty et al ).…”

mentioning

confidence: 99%

Conservation genetics and geographic patterns of genetic variation of the endangered officinal herb Fritillaria pallidiflora

Pan

Sanderson

et al. 2015

Nordic Journal of Botany

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Fritillaria pallidiflora is an endangered officinal herb distributed in the Tianshan Mountains of northwestern China. We examined its phylogeography to study evolutionary processes and suggest implications for conservation. Six haplotypes were detected based on three chloroplast non-coding spacers (psbA-trnH, rps16, and trnS-trnG); genetic variation mainly occurred among populations and SAMOVA groups. This species is distributed in different deep valleys, and we speculate that these fragmented habitats cause gene flow barriers among populations and groups. We also speculate that during glacial periods, extremely low temperatures and aridity caused additional range shrinkage and fragmentation, factors consequently resulting in significant intraspecific differentiation in allopatric regions. For setting a conservation management plan, we identified the Lucaogou region as the most important area, and we designated two ESUs for separate management.

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Genetic diversity in the two endangered endemic species Kirengeshoma koreana (Hydrangeaceae) and Parasenecio pseudotaimingasa (Asteraceae) from Korea: Insights into population history and implications for conservation

Cited by 12 publications

References 55 publications

Comparative genetic structure betweenSedum ussurienseandS. kamtschaticum(Crassulaceae), two stonecrops co‐occurring on rocky cliffs

Comparative genetic structure betweenSedum ussurienseandS. kamtschaticum(Crassulaceae), two stonecrops co‐occurring on rocky cliffs

Conservation implications of the genetic diversity of Gymnospermium microrrhynchum in Korea

Conservation genetics and geographic patterns of genetic variation of the endangered officinal herb Fritillaria pallidiflora

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