• Title/Summary/Keyword: Allozyme

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Genetic Diversity and Population Structure of Glehnia littoralis (Umbelliferae) in Korea

  • Huh Man Kyu;Choi Joo Soo;Huh Hong Wook;Choi Yung Hyun;Choi Byung Tae
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.17 no.6
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    • pp.1519-1523
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    • 2003
  • Glehnia littoralis Fr. Schmidt (Umbelliferae) is a short-lived herbaceous species that are mostly distributed throughout East Asia. Although G. littoralis has been regarded as ecologically important one, there is no report on population structure in Korea. Starch gel electrophoresis was used to investigate the allozyme variation and genetic structure of Korean populations of this species. A high level of genetic variation was found in G. littoral is populations. Nine enzymes revealed 18 loci, of which 12 were polymorphic (66.7%). Genetic diversity at the species and population levels were 0.159 and 0.129, respectively. The sexual and asexual reproduction, high fecundity, and colonization process are proposed as possible factors contributing to genetic diversity. An indirect estimate of the number of migrants per generation (Nm = 1.45) indicated that gene flow was not extensive among Korean populations of this species. It is suggested that the ability of vegetation and artificial selection may have played roles in shaping the population structure of this species. we recommend that a desirable conservation population should be included at least 30 plants per population and especially those with high variation.

Systemetic Study on the Family Pectinidae (Bivalvia) in Korea. Allozyme Variability (한국산 가리비과(Pectinidae: Bivalvia) 패류의 계통분류학적 연구. 동이원소)

  • 김재진;박갑만
    • The Korean Journal of Malacology
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    • v.15 no.1
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    • pp.63-69
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    • 1999
  • Electrophoretic analysis was carried out to elucidate genetic relationships of four Korean scallops, Patinopecten yessoensis, chlamys ferreri ferreri, Chlamys swifti and Amusium japonicum japonicum, and of a Chinese population of C. ferreri ferreri purchased form a market. Glucose phosphate isomerase banding pattern was highly varied among eight loci. Three populations of C. ferreri ferreri were more closely clustered in a dendrogram within the range of Nei's genetic similarity values of 0.730-0.830. P. yessoenensis and Chlamys swifti were clustered with genetic similarity value of 0.647. These two clusters were lineated at the value of 0.598. A. japonicum japonicum was clustered with other three species at value of 0.541.

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A Preliminary Population Genetic Study of an Overlooked Endemic ash, Fraxinus chiisanensis in Korea Using Allozyme Variation

  • Lee, Heung Soo;Chang, Chin-Sung;Kim, Hui;Choi, Do Yeol
    • Journal of Korean Society of Forest Science
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    • v.98 no.5
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    • pp.531-538
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    • 2009
  • We used enzyme electrophoresis to evaluate genetic diversity in five populations of endemic ash, Fraxinus chiisanensis in Korea. Of 15 putative allozyme loci examined 26.7% were polymorphic and expected heterozygosity for the species was low (0.082). Within the range, population were highly differentiated ($F_{ST}$=0.356) and little genetic variation was explained by geography. The pattern of distribution of variation showed low genetic variation within populations and pronounced divergence among populations, which was consistent with the prediction for the effects of limited gene flow and local genetic erosion. Although the frequencies of male plants were dominant ranging from 79.3% to 89.4%, most mating events seems to be inevitable mating between relatives in small populations based on heterozygote deficiency of this species. Small effective population size and the limited dispersal contributed to the low rates of gene flow within as well as between populations.

Genetic Analysis of Three Overwintering Diamondback Moth, Plutella xylostella (Linne), Populations in Korea (국내 세 지역의 배추좀나방(Plutella xylostella (Linne)) 월동집단에서 나타나는 유전변이 분석)

  • 김용균;박효찬;정명섭
    • Korean journal of applied entomology
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    • v.40 no.3
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    • pp.227-233
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    • 2001
  • Four polymorphic allozymes were used for genetic analysis of overwintering populations of field diamondback moth, Plutella xylostella (Linne). Different allele frequencies were found among three local populations of Andong, Youngchon, and Yangsan in all loci. Two allozyme loci (acid phosphatase and phosphoglucomutase) showed significant deviation from Hardy-Weinberg equilibrium in allele frequencies among these populations. Estimated Nei's genetic distance varied from 0.0151 between Yangsan and Youngchon to 0.0877 between Andong and Youngchon. Compared with the previous genetic distances in this moth, a little higher genetic differentiation among these overwintering populations suggests that there would be a specific genetic bottleneck in each local population during overwintering period.

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Genetic Diversity and Population Structure of Kaloula borealis (Anura, Microhylidae) in Korea

  • Yang, Suh-Yung;Kim, Jong-Bum;Min, Mi-Sook;Suh, Jae-Hwa;Kang, Young-Jin
    • Animal cells and systems
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    • v.4 no.1
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    • pp.39-44
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    • 2000
  • To assess the genetic diversity and population structure of Korean K. borealis, allozyme analysis was performed. The average genetic variability of Korean K. borealis populations was %P=13.2, Ho=0.048, and He=0.045. This value was the lowest in comparison with other Korean amphibian species studied. Also, the value was much lower than that of a reference population from Chinese K. borealis (%P=50, Ho=0.125, He=0.172). Wright's F-statistics showed that Korean K. borealis has distinctly low level of gene flow among regional populations (F$_{ST}$=0.339, Nm=0.487) in comparison with other Korean amphibian species studied. However, the average level of genetic divergence among Korean K. borealis populations was moderate (Nei's D=0.020). Therefore, it appeared that low levels of genetic diversity (He=0.045) and gene flow (Nm=0.487) among regional populations ave probably due to the results of decreasing population size and patchy distribution of this species in Korea.

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