• Korean Journal of Medicinal Crop Science
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• v.2 no.3
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• pp.198-204
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• 1994

This study was carried out to investigate the auxin(IAA, IBA, NAA) treatment and the effect of shading rate in Asarum sieboldii. The results obtained were summerized as follows: By the soaking treatment of auxins to the cutted rhizome enhanced root growth and plant weight. By the increment of shading rate, plant growth was much better compare to the control. Leaf fallen times appeared about 20 days more earlier at plain area then the alpain area. Root yield was much higher by the treatment of shading then the conventional cultivation so it seem to be the useful for large scale cultivations of A. sieboldii.

• Applied Biological Chemistry
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• v.41 no.8
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• pp.600-604
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• 1998

Methanol extracts from 53 species of oriental medicinal plants in 34 families were tested for their fungicidal activities against Pyricularia grisea, Rhizoctonia solani, Phytophthora capsici, Phytophthora infestans, Collectotrichum dematium, Botryospaeria dothidea, Fusarium oxysporum f. sp. cucumerinum, Botrytis cinerea, Puccinia recondita, and Erysiphe graminis. In in vitro study using impregnated paper disc method, the efficacy varied with both plant pathogen and plant species tested. Methanol extracts of Asarum sieboldii roots, Sinomenium acutum roots, Pinus densiflora leaves, Rheum undulatum root barks, Coptis japonica roots, and Phellodendron amurense barks showed potent fungicidal activities against the various pathogens when treated with 10 mg/disc. In a whole plant test, methanol extracts of P. densiflora leaves and roots and C. japonica roots were highly effective against a variety of plant pathogens. As a naturally occurring fungicide, P. densiflora- and C. japonica-derived materials could be useful as new fungicidal products against various plant diseases induced by plant pathogenic fungi.

• Journal of the Korean Applied Science and Technology
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• v.28 no.2
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• pp.161-169
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• 2011

To develope new natural substances for whitening agent, Baeckji(Angelica dahuria;BK), Seasin(Asarum sieboldii;SS). Baecjgangjam(Bombycis corpus;BGJ) and Mynkanbang(MKB) were selected and extracted by hot water and 70% EtOH, respectively. Hydrothermal and ethanolic extracts of BK, SS, BGJ and MKB were evaluated for anti-oxidative effect, tyrosinase activity, melanogenesis of B16 melanoma cells and changes in level of tyrosinase expression by using Western blotting. All hydrothermal and ethanolic extracts showed scavenging activities of free radicals against 1,1-diphenyl-2-picrylhydrazyl(DPPH) but no inhibitory effect on tyrosinase activity. Ethanolic extracts of BK, SS, and BGJ and especially highly, those of MKB inhibited production of melanin in B16 melanoma cells and were able to reduce the level of tyrosinase expression in B16 melanoma cells. These results suggest that ethanolic extracts of BK, SS, BGJ and MKB can be an effective whitening agent from natural plant.

• Korean Journal of Environment and Ecology
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• v.16 no.3
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• pp.296-308
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• 2002

The vascular plants in Mt. Cheongwan, Jangheung-gun, Jeollanam-do, were consisted of 599 taxa; 117 families, 366 genus, 519 species, 76 varieties and 4 forma. From the floristic point of view, Mt. Cheongwan is distributed to both the evergreen trees as Pteris mulfida, Dryopteris bissetiana, Torreya nucifera, Cephlotaxus koreana, Neolitsea sericea, Quercus acuta, Hedera rhombea, Fatsia japonica, Camellia japonica, Eurya japonica, Thea sinensis, Acorus gramineus, Pseudosasa japonica and Sasa borealis, and the deciduous subtropical trees such as Carpinus coreana, Aphanth aspera, Orixa japonica, and Lygodium japonicum And it is worth special mention to be discovered Selaginella rossii, Corylopsis coreana, Stewartia koreana, Asarum sieboldii, Viola orientals, and Drosera royundifolia. The Specific plants which is categorized to the Degree by the Ministry of Environment recorded as 45 taxa; 1 species each for the Degree II, IV and V, 5 species for the Degree III, and 37 species for the Degree I.

• Korean Journal of Plant Resources
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• v.13 no.1
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• pp.61-65
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• 2000

It was investigated 91 families, 305 genera, 470 species, 1 subspecies, 30 varieties, 2 forma and total 503 taxa of herbal resources plants in Chollabuk-do area in this study. Among them 45 taxa belong to Compositae, 30 taxa belong to Rosaceae and 23 taxa belong to Leguminosae in order were occurred frequently. In general the herbal resources plants were distributed abundantly in Togyusan, Naejangsan, Changansan and Taedunsan area. Comparatively high frequent species was surveyed as follows: Schizandra chinensis, Cimicifuga heracleifolia, C. simplex, Asarum sieboldii, Arisaema amurense var. serratum, Polygonatum odoratum var. pluriflorum, Prunella vulgaris var. lilacina and Veratrum patulum etc. There was growing 30-50 individuals of Codonopsis lanceolata in 5m$\times$5m quadrat, 90 Chrysanthemum zawadskii var. latilobum plant in 1m$\times$1m and 100 Polygonatum odoratum var. pluriflorum plant in 1m$\times$1m quadrat from Togyusan quantitatively. Rare and herbal worth species were observed to distribute such as Gastrodia elata in Naejangsan and Togyusan and Acanthopanax senticosus in Mandoksan, Chinan-gun, respectively. Cultivating species in the farm now and/or favorable species in the future will be recommended here, for example, Codonopsis pilosus, A. senticosus, G. elata, Rubus coreanus, C. lanceolata and Pleuropterus multiflorus.

• Journal of Life Science
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• v.26 no.3
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• pp.359-363
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• 2016

We have screened four natural products against 640 single compounds, which shows more two folds gene expression for both endoplasmic reticulum aminopeptidase 1 (ERAP1) and FOXO-family transcription factor (FOXO1). The results were as follows. (±)-Car-3-ene-2,5-dione from Asarum sieboldii Miq. is C₁₀H₁₂O₂ molecular formula and the 164 kDa molecular weight. Cinobufagin from Bufonis Venennum is C₂₆H₃₄O₆ molecular formula and 442 kDa molecular weight. So far reported main biological function is Na⁺/K⁺-ATPase inhibition. Corilagin from Euphorbia pekinensis is C₂₇H₂₂O₁₈ molecular formula and 634 kDa molecular weight. Carbonic anhydrase inhibition is well known its biological function. Corydaline from Corydalis turtschaninovii is C₂₂H₂₇NO₄ molecular formula and 369 kDa molecular weight. The main biological function is acetylcholinesterase inhibition. In the short future, four types of natural products will be used in longevity experiments with insects. The results may give one of the clues for studying new drug development candidates of the longevity.

• Korean Journal of Environmental Biology
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• v.24 no.4
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• pp.359-367
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• 2006

The vascular plants of this site were identified as 641 taxa through field investigation; 101 families, 340 genera, 547 species, 80 varieties, 12 forms, 1 subspecies and 1 hybrid. Based on the Rare plants of the Forest Service and Korea Forest Research Institute, 9 taxa were listed except implanted species; Loranthus tanakae, Aristolochia manshuriensis, Aristolochia contorta, Viola albida, Cypripedium macranthum, Schpolia japonioa, Acanthopanax chiisanensis, Rhododendron micranthum. Based on the Korean endemic plants, 18 taxa were listed; Salix purpurea var, japonica, Asarum sieboldii var. mandshuricum for. misnadrum, Persicaria lapathifolia for. alba, Pseudostellaria sylvatica, Aconitum pseudolaeve var. erectum, Corydalis maculata, Corydazis albipetala, Corydalis grandicazyx, Cardamine amaraeiormis, Chrysosplenium barbatum, Filipendula glaberrima, Lespedeza x tomentella, Acanthopanax chiisanensis, Melampyrum setaceum var. nakaianum, Weigela subsessilis, Adenophora triphylla var. hirsute, Cirsium setidens, Saussurea pseudogracilis. Specific plant species by floral region were total 81 taxa (12.6%); Prunus yedoensis in class V, 13 taxa (Thuja orientalis, Cimicifuga heracleiiolia, Sedum middendorffianutn, Rhododendron micranthum, etc.) in class IV, 17 taxa (Equisetum palustre, Aceriphyllum rossii, Angelica gigas, Cirsium setidens, etc.) in class III, 15 taxa (Heloniopsis orientalis, Lychnis cognata, Saxifraga oblongifolia, Viola orientalis, etc.) in class II, 35 taxa (Hosta capitata, Cimicifuga simplex, Chrysosplenium flagelliferum, Campanula punctata, etc.) in class I. So, the naturalized plants were listed 53 taxa and the naturalization index was 8.2%, urbanization index was 20.7%.

• Korean Journal of Plant Resources
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• v.30 no.4
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• pp.343-351
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• 2017

Plant extracts were screened for antifungal activity against major plant pathogens, Botrytis sp., Collectotrichum sp., Alternaria sp. and Cylindrocarpon sp. using 96-well microdilution method. Among the 662 methanol extracts from 401 plant species, 36 extracts showed complete inhibition of spore germination against at least one of four pathogenic fungi. Extracts of Morus alba twig and Sophora flavescens root showed minimum inhibition concentration (MIC) at $1,250{\mu}g/ml$ against Botrytis sp.. Extracts of Chloranthus japonicus root showed MIC at $1,250{\mu}g/ml$ against Collectotrichum sp.. Extracts of Glycyrrhiza uralensis aerial part, Inula helenium root and Menispermum dauricum root showed MIC between 625 and $1,250{\mu}g/ml$ against Alternaria sp.. G. uralensis aerial part and I. helenium root showed MIC at $1,250{\mu}g/ml$ against Cylindrocarpon sp.. Specifically, the extracts of Agrimonia pilosa root, Angelica tenuissima root, Asarum sieboldii root, Campsis grandifolia leaf and twig, Cnidium officinale root, Dictamnus dasycarpus root, G. uralensis aerial part, I. helenium root and M. alba twig completely inhibited spore germination at lower than $5,000{\mu}g/ml$ against all of four pathogenic fungi. Two methanol extracts from G. uralensis aerial part and M. alba twig may used as a candidate to develop into effective disease management materials in plant cultivation.

• Current Research on Agriculture and Life Sciences
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• v.13
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• pp.31-44
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• 1995

Mt. Kumjeong is located in south-eastern part of the Korean Peninsular($129^{\circ}$01' to $129^{\circ}$05' E, $35^{\circ}$03' to $35^{\circ}$17' N) and the altitude of the summit is 802 meter. In order to find out the vegetation units which made it possible to classify subtropical forest and south-temperate forest, Mt. Kumjeong (which is located in a border of between subtropical forest and south-temperate forest) was selected as a study area. The primary result of actual vegetation analysis in Mt. Kumjeong based upon the vegetation community analysis methods by the ZM-school, and the relationships between vegetation community and two parameters(altitude, topography) analyzed by using coincidence analysis method were summarized as followings. 1. Based upon analytic methods of the vegetation community by the ZM-schools, the primary analytic result of the analysis of vegetation community in Mt. Kumjeong was divided into 10 communities, 9 groups, 2 subgroups. 2. Eurya japonica group of Pinus densiflora community out of 16 vegetation units was thought as a indicator vegetation group which made it possible to border subtropical forest and south-temperate forest. 3. Natural regeneration of Stewartia koreana group was thought to be difficult because seedling and sapling was rarely showed, 4. In relationship between vegetation units and altitude, Carpinus tschonoskii community, Quercus variabilis community, Quercus serrata community, Wisteria floribunda community,. Eurya japonica group of Pinus densiflora community, Pinus thunbergii community mainly distributed below altitude 500 meter, and Quercus mongolica community, Typical group of Pinus densiflora community, Quercus dentata community, Carpinus coreana community, Quercus acutissima community mainly distributed above altitude 500 meter. 5. In relationship between vegetation units and topography, Carpinus tschonoskii community, Quercus variabilis community, Quercus serrata community, Wisteria floribunda community,. Eurya japonica group of Pinus densiflora community distributed below middle slope, Quercus mongolica community, Typical group of Pinus densifiora community, Quercus dentata community, Carpinus coreana community, Pinus thunbergii community Quercus acutissima communily clistributed above midclle slope.