• Korean Journal of Plant Taxonomy
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• v.46 no.4
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• pp.361-370
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• 2016

An area comprising Juwangsan National Park and its adjacent mountains (southeastern Korean Peninsula) is a good model system for testing the effects of physical barriers to gene flows in plant populations. We predicted that plant species consisting of isolated populations are genetically more differentiated than those that are rather continuously distributed. Most populations of Sedum polytrichoides occur in four isolated valleys, and we assessed the genetic variability and structures using twelve allozyme loci in ten populations. We also compared the present results to earlier findings pertaining to the two co-occurring herbs Hylotelephium ussuriense (${\equiv}$ Sedum ussuriense) (growing only in the four isolated valleys) and S. kamtschaticum (rather continuously distributed). We found moderate levels of within-population genetic variation in S. polytrichoides ($H_{e}=0.112$). Estimates of among-population divergence in S. polytrichoides were also moderate ($F_{ST}=0.250$) and, as expected, very similar to that of H. ussuriense (0.261) but considerably higher than the variation in S. kamtschaticum (0.165). An analysis of molecular variance (AMOVA) revealed that S. polytrichoides and H. ussuriense had higher percentages of among-valley variation (19% each) than S. kamtschaticum (4%). Most of this variation, as also indicated by the STRUCTURE program, was due to differences in genetic profiles between the two central valleys. We concluded that the genetic differences observed between species (S. kamtschaticum vs. S. polytrichoides and H. ussuriense) are mainly due to differences in their distribution within the study area.

• 한국약용작물학회:학술대회논문집
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• 2007.05a
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• pp.259-260
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• 2007

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2003.04a
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• pp.179-179
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• 2003

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2009.04a
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• pp.149-151
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• 2009

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2002.04b
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• pp.185-185
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• 2002

• 한국약용작물학회:학술대회논문집
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• 2007.11a
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• pp.306.2-306.2
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• 2007

• Proceedings of the Korean Society of Life Science Conference
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• 2001.09a
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• pp.40-40
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• 2001

• Journal of Environmental Science International
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• v.14 no.12
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• pp.1087-1095
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• 2005

Scrophularia takesimensis Nakai called 'Sum-Hyun Sam' growing about 1m in high is a perennial plant of Scrophulariaceae. Because the number of these species is very limited in the world, the Ministry of Environment has appointed S. takesimensis as a preserved plant. The Korea Forest Service also protects it strictly by the law since S. takesimensis is an out-of-the-way plant and possible to be exterminated soon in Korea. Investigation for distribution and ecological characteristics of the habitat far S. takesimensis was carried out in Ulleung-do Island. S. takesimensis has a tendency to emerged with Calystegia soldanella Roem. et Schultb. and Artemisia japonica subsp. littoricola Kitam. C. soldanella community were developed on the dry and well-lighted as east or north facing conditions. A. japonica subsp. littoricola community have tendency to developed on the properly lighted as west or north facing and well maintained soil or air humidity. C. soldanella community were developed on the sandy gravel or gravel and grew with Farfugium japonicum, (L.) Kitam., Lonicera japonica Thunb., and Peucedanum japonicum Thunb.. A japonica subsp. littoricola communities were emerged on the rock beds or pile of rocks and grew with Sedum oryzifolium Makino, Sedum takesimense Nakai, and Spergularia marina (L.) Griseb.

• The Korean Journal of Food And Nutrition
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• v.21 no.3
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• pp.269-274
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• 2008

Plants have long been used as a food source in Korea. In this study, we investigated the combined immunomodulative effects of a water extract mixture of(pine needles, Sedum sarmentosum Bunge, hijkiaorme, buckwheat and Peril a leaves) on Balb/c mice $7{\sim}8$ weeks old. The mice were fed a chow diet ad libitum and the plant extract was orally administered every other day for four weeks at two different concentrations(50 and 500 mg/kg BW). After preparing the single-cell suspension, splenocyte proliferation was determined by the MTT(3-[4,5-di-methylthiazol-2-y]-2,5-diphenyl terazolium bromide) assay. After 48hrs of incubation with the mitogens(ConA or LPS) splenocyte from the mice groups administered 50 and 500 mg/kg BW of the plant extract showed a significant increased in proliferation compared to the control group. A hemolytic plague forming cell assay was used to indicate antibody production against sheep red blood cells(SRBC). The number of antibody-secreting cells T-dependent antigen. The result of this study suggest that supplementation with this plant extract may regulate immune function by increasing splenocyte proliferation and the number of plaque forming cells.

• Natural Product Sciences
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• v.14 no.1
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• pp.32-36
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• 2008

The antimicrobial activity of seventy five ethanol extracts obtained from 67 different kinds of plant species of the Mongolian flora were evaluated by means of the disc diffusion method against five species of microorganisms, Escherichia coli, Enterococcus faecalis, Staphylococcus aureus, Micrococcus luteus and Pseudomonas aeruginosa. Among the plant extracts examined, 34 kinds of extracts demonstrated significant antibacterial activity against one or more species of microorganisms, respectively. Especially, the root extract of Paeonia anomala, the whole herb extract of Myricaria alopecuroides, the whole herb extract of comarum zalesovianum, the whole herb extract of Agrimonia pilosa and some other plant extracts demonstrated a particularly potent antimicrobial activity. The ethylacetate fractions obtained from the whole herb extract of Myricaria alopecuroides and from those of Sedum aizoon, Paeonia anomala, Sedum hybridum and Dasiphora fruticosa exhibited a particularly potent antibacterial activity especially against Staphylococcus aureus and Micrococcus luteus.