• Journal of the Korean Institute of Landscape Architecture
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• v.23 no.3
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• pp.144-154
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• 1995

The fruit color characteristics and persisting period of deciduous woody landscape plants were investigated through the field survey in Suwon region from January 1, 1992 to March 20, 1993. The summary of the study results was as follows; The total fruit color persisting period was about 320 days from May 1, 1992 when Prunus mume was beginning of fruit coloring, to March 20, 1993 when the fruits of Platanus occidentalis and platanus X acerifolia were persisting. And the plants of fruit persisting period over 60 days after leaf falling were Vibumum erosum, Ilex serrata, Ilex verticillata 'Christmas Cheer', Platanus X acerifolia, Platanus occidentalis, Berberis thunbergii 'Atropupurea', Ligustrum obtusifolium. According to the KBS standard color number, 52.6% of of the fruit color were red, 18.9% yellow, 11.6% black, green 9.5%, white 2.1%, violet 1.1%, and red is followed black 4.2%. Evodia daniellii, Ilex verticillata 'Christmas Cheer', Ilex serrata, Ginkgo biloba, Lindera obtusiloba, and Lindera erythrocarpa should be planted male and female species together for fruits. We got the new information on the fruit color characteritics and persisting period of Malus 'Hopa', Malus 'Almey', Malus 'Pioneer X', Acer rubrum, Malus prunifolia, Pyrus serotina, Berberis thunbergii 'Atropurpurea', Vibumum rhytidophyllum, Rosa spp. Vitis vinifera, Vaccinium angustifolium, Ilex verticillata 'Christmas Cheer', Magnolia stellata, Aronia arbutifolia, Sorbus alnifolia, Lonicera japonica var. aueroreticulta, and Ligustrum X vicaryi. And we need to introduce new cultivars of woody landscape plants including Malus spp, Berberis spp, Sorbus alnifolia yellow autumn leaf clone etc. for the better planting design. The fruit persisting period of woody landscape plants studied by fruit name was that sorosis 276 days, samara 155 days, legume 153 days, hip 133 days, pome was 124 days, drupe 92 days, berry 73 days, capsule 67 days, follicle 55 days and nut 52 days respectively.

• Biomolecules & Therapeutics
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• v.28 no.5
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• pp.397-404
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• 2020

Adiponectin secretion-promoting compounds have therapeutic potentials in human metabolic diseases. Diallyl biphenyl-type neolignan compounds, magnolol, honokiol, and 4-O-methylhonokiol, from a Magnolia officinalis extract were screened as adiponectin-secretion promoting compounds in the adipogenic differentiation model of human bone marrow mesenchymal stem cells (hBM-MSCs). In a target identification study, magnolol, honokiol, and 4-O-methylhonokiol were elucidated as PPARα and PPARγ dual modulators. Diallyl biphenyl-type neolignans affected the transcription of lipid metabolism-associated genes in a different way compared to those of specific PPAR ligands. The diallyl biphenyl-type neolignan structure provides a novel pharmacophore of PPARα/γ dual modulators, which may have unique therapeutic potentials in diverse metabolic diseases.

• The Korea Journal of Herbology
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• v.33 no.6
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• pp.9-18
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• 2018

Objective : Many patients take antihypertensive drugs as well as herbal medicines at the same time in order to treat other symptoms or to keep their well-being. In this study, interactions between herbal medicines and synthetic antihypertensive drugs were analyzed. Methods : To investigate the interaction between herbal medicines and synthetic antihypertensive drugs, three electronic databases, including OASIS, Mediline and Sciencedirect were searched. Experimental and clinical studies on the interaction between herbal medicines and antihypertensive drugs were independently reviewed and included. Results : Analyzing selected studies, twenty herbs were found to interact with antihypertensive drugs. Herbs found to increase the antihypertensive effect were Panax ginseng, Carthamus tinctorius, Magnolia officinalis, Silybum marianum, Scutellaria baicalensis, Schisandra chinensis, Sophora flavescens, Piper nigrum, Curcuma longa, Ginkgo biloba, Juncus effuses and Hydrastis canadensis. In contrast, Commiphora myrrha, Rhodiola rosea, Hypericum perforatum, Eurycoma longifolia, and Daturae metel were found to inhibit the antihypertensive effect. Stephania tetrandra could increase or decrease the effect depending on the type of antihypertensive drug. Epedria sínica was suspected of pharmacodynamic interaction with antihypertensive drug. Glycyrrhiza uralensis has been reported to have serious side effects in combination with antihypertensive drugs. Conclusion : These results imply that when used in combination with herbal medicines and synthetic antihypertensive drugs, proper doses and herbs which are to avoid need to be informed to the patients. Despite concerns about interactions between herbal medicines and synthetic drugs, related research is very limited. More systematic researches are needed to give information on patient safety as well as to guide clinical practice.

• Journal of People, Plants, and Environment
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• v.23 no.1
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• pp.87-99
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• 2020

This study was conducted to analyze the current state and symbolic meanings of floral emblem designation in local governments of South Korea. The scope of local governments subject to analysis was limited to special city, metropolitan city, province, self-governing province, city, self-governing city, county and district based on their administrative divisions. The floral emblems of local governments and their symbolic meanings as of 2019 were examined. A total of 44 plant species were designated as floral emblems. Many plant species with high designation frequency were included in Rhododendron spp., Rosa spp., Camellia spp., Magnolia spp., and Prunus spp.. Plant species with higher designation frequency tended to have more symbolic meanings. A total of 155 terms were used for the symbolic meanings assigned to all the designated floral emblems. The major symbolic meanings were relevant to material affluence or economic growth, community spirit, and personality generally required from local residents. Most of the plant species linked to the top 10 most frequently assigned terms in symbolic meaning were those of the top 10 most frequently designated floral emblems. In the case of floral emblems with high designation frequency, it was shown that they were linked with various symbolic meanings in order to grant identity with regional distinctiveness and differentiation, regardless of the symbolic meaning that the designated flowers generally have. However, the floral emblems with low designation frequency seem to have relatively strong physical or emotional relevance with local governments and thus are expected to have high utilization in regional branding and tourism marketing.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2021.04a
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• pp.63-63
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• 2021

사회가 발달할수록 사람들의 건강과 웰빙에 대한 욕구는 더욱 늘어가고 이에 따라서 몸에 좋은 것들을 찾고 개발하여 다양한 음료와 차들이 판매되고 있는 실정이다. 이에 색과 기능성이 뛰어난 꽃차들에 대한 선호도가 점점 올라가고 있으며 그중에서도 색과 향과 맛 및 기능성까지 뛰어난 대표적인 꽃차가 백목련 꽃차이다. 본 연구에서는 노화억제 물질로 잘 알려져 있는 항산화물질들이 제조된 2017년부터 2021년까지의 연도에 따라서 차이가 있는 지를 알아보고자 수행하였으며 그 결과는 다음과 같았다. 1. Flavonoid 함량은 측정농도(1g/100ml)로 제조연도가 2017년 것은 499.0±11.0ppm, 2018년 것은 485.0±16.0ppm, 2019년 것은 422.0±13.0ppm, 2020년 것은 759.0±38.0ppm, 2021년 것은 509.0±14.0ppm으로 2020년에 제조한 것이 가장 높은 함량을 보였다. 2. Chlorogenic acid 함량은 측정농도(1g/100ml)로 제조연도가 2017년 것은 2062.0±63.0ppm, 2018년 것은 2253.0±21.0ppm, 2019년 것은 2035.0±25.0ppm, 2020년 것은 3363.0±52.0ppm, 2021년 것은 2359.0±35.0ppm의 함량을 보였다. 3. Catechin 함량은 측정농도(1g/100ml)로 제조연도가 2017년 것은 1343.0±42.0ppm, 2018년 것은 1470.0±14.0ppm, 2019년 것은 1325.0±17.0ppm, 2020년 것은 2210.0±35.0ppm, 2021년 것은 1541.0±24.0ppm의 함량을 보였다. 4. Tannic acid 함량은 측정농도(1g/100ml)로 제조연도가 2017년 것은 1403.0±42.0ppm, 2018년 것은 1530.0±14.0ppm, 2019년 것은 1385.0±17.0ppm, 2020년 것은 2270.0±35.0ppm, 2021년 것은 1601.0±24.0ppm의 함량을 보였다. 5. 모든 항산화물질에서 2020년에 제조한 꽃차가 가장 높은 함량을 보였다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2021.04a
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• pp.34-34
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• 2021

과거 식물상에 대한 정보가 없었던 경기도 양주시 장흥면에 위치한 장군봉(425.0 m)의 식물상을 2020년 4월부터 10월까지 총 3회에 걸쳐 조사하였다. 본 조사에서 확인된 조사지 내 관속식물은 양치식물 8과 10속 9종 1변종 10분류군, 나자식물 3과 4속 6종 6분류군, 쌍자엽식물 62과 144속 198종 7아종 16변종 2품종 223분류군, 단자엽식물 6과 29속 38종 1아종 5변종 1픔종 45분류군으로 총 284분류군을 확인할 수 있었다. 장군봉 일대의 특산식물은 은사시나무 (Populus tomentiglandulosa T.B.Lee), 키버들 (Salix koriyanagi Kimura), 병꽃나무 (Weigela subsessilis (Nakai) L.H.Bailey), 백운산원추리 (Hemerocallis hakuunensis Nakai)의 4분류군이 분포하고 있었고 산림청에서 지정한 희귀식물로는 취약종 (VU) 등급의 주목 (Taxus cuspidata Siebold & Zucc.) 1분류군이 확인되었다. 느릅나무 (Ulmus davidiana var. japonica (Rehder) Nakai)를 포함하여 I등급 10종, 함박꽃나무 (Magnolia sieboldii K.Koch) 등 II등급 4종, 병조희풀 (Clematis heracleifolia DC.) 등 III등급 8종, IV등급에 해당하는 바위말발도리 (Deutzia grandiflora var. baroniana Diels) 등 총 25종이 식물구계학적특정종에 속했다. 침입외래식물은 미국자리공 (Phytolacca americana L.), 유럽점나도나물 (Cerastium glomeratum Thuill.), 청비름 (Amaranthus viridis L.) 등 20분류군을 확인할 수 있었고, 생태계교란야생식물인 환삼덩굴 (Humulus japonicus Sieboid & Zucc.), 돼지풀 (Ambrosia artemisiifolia L.), 단풍잎돼지풀 (Ambrosia trifida L.), 미국쑥부쟁이 (Aster pilosus Willd.)의 4분류군이 확인되었다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2021.04a
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• pp.64-64
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• 2021

색과 향과 맛 및 기능성까지 뛰어난 대표적인 꽃차가 백목련이나 기능성에 관한 연구는 아직 매우 미미하다. 본 연구에서는 유리산소 소거능(DPPH)와 아질산염 소거능(Nitrite Scavenging Activity)이 백목련 꽃차가 제조된 2017년부터 2021년까지의 연도에 따라서 차이가 있는 지를 알아보고자 수행하였으며 그 결과는 다음과 같았다. 1. DPPH는 측정농도(0.5g/100ml=500ppm)에서 제조연도가 2017년 것은 87.8±0.0, 2018년 것은 87.5±0.1, 2019년 것은 85.6±0.6, 2020년 것은 88.5±0.2, 2021년 것은 86.1±0.1으로 2020년에 제조한 것이 가장 높은 함량을 보였다. RC50이란 소거능력이 50%를 환원시킬 수 있는 환원율을 의미하며 낮을수록 적은 양으로 환원이 가능하여 함량이 높다고 할 수 있으며 RC50값은 2017년이 140,2, 2018년이 165.0, 2019년이 178.6, 2020년이 112.2, 2021년이 151.4으로 2020년이 가장 뛰어난 활성을 보였다. 2. 아질산염 소거능은 측정농도(0.5g/100ml=500ppm)에서 제조연도가 2017년 것은 31.8±1.9, 2018년 것은 21.1±4.6, 2019년 것은 18.2±1.9, 2020년 것은 31.0±1.4, 2021년 것은 19.3±5.7의 수치를 보여 2017년과 2020년이 높은 활성을 보였다.

• Korean Journal of Environment and Ecology
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• v.26 no.1
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• pp.39-45
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• 2012

To explore on the defense strategies against hervivory of 67 broadleaved tree species, morphological characteristics of the leaf, leaf domatia structure and the number, herbivores insects and mites on the leaves, collected from the trees growing in Taean-gun, Chuncheongnam-do were investigated. 46 broadleaved tree species(68.7%) had the domatia structures, and 21 species including Quercus salicina and Magnolia grandiflora did not. 31 species including Juglans mandshurica and Carpinus laxiflora reveals tuft type, 12 species including Quercus dentata and Corylus heterophylla reveals pocket+tuft type, and 2 species, Sorbus alnifolia and Prunus yedoensis does pocket type, and Viburnum odoratissimum var. awabuki does pouch type. Domatia number per leaf proves the highest figures, 23.4/leaf for Quercus dentata. Plant defense strategies using leaf lower-surface trichomes of Magnolia grandiflora reveals dense villous, those of Populus alba and Vitis vinifera reveals dense pilose, that of Elaeagnus umbellata does dense scaly hairs, that of Pueraria lobata does dense strigose. Plant defense strategies using extrafloral nectaries were adapted 23 tree species(34.3%). Observed examples are Prunus tomentosa, Ficus carica, Viburnum dilatatum and Carpinus laxiflora. Predatory mites were observed on the leaves of 40 tree species(59.7%), and mean values of predatory mites was highest values 23.4/leaf in Quercus dentata. Minute arthropods destroying the leaf of broadleaved trees. are such as Periphyllus californiensis, P. viridis, Diaspididae sp., gall mites, thrips, and total numbers observed were odered gall mites, Diaspididae sp., aphids and thrips. Natural enemies of these hervivores arthropods are such as predatory mites, Chilocorus rubidus, Coccinella septempunctata and the nymph, Aphidius ervi. These results indicate that defense strategies including protective mutualisms may be frequent in the temperate broadleave trees.

• Korean Journal of Environment and Ecology
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• v.28 no.6
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• pp.751-761
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• 2014

This study was carried out to analyze the vegetation properties, soil characteristics and ordination of Rhododendron brachycarpum population in South Korea. Rhododendron brachycarpum were mainly distributed along the Ulleungdo and Baekdudaegan of the Korean penninsula and it's population was located at an elevation of 872m to 1466m. The Rhododendron brachycarpum population was classified into Taxus cuspidata var. latifolia dominant population, Magnolia sieboldii dominant population, Thuja koraiensis dominant population and Rhododendron brachycarpum typical population. The composition of soil properties in the same areas are as follows: organic matter, total nitrogen, available phosphorous, exchangeable $K^+$, exchangeable $Ca^{2+}$, exchangeable $Mg^{2+}$ contained, and soil pH. The capacities of these chemical properties of the soil ranged from 10.45~15.28%, 0.37~0.61%, $0.21{\sim}0.35cmol^+/kg$, $0.39{\sim}2.54cmol^+/kg$, $0.17{\sim}0.50cmol^+/kg$, $18.28{\sim}22.81cmol^+/kg$ and 4.66~5.23 respectively. The results of the correlation between communities and soil conditions of vegetation of Rhododendron brachycarpum by DCCA ordination method are as follows: Taxus cuspidata var. latifolia dominant population was found in the very steep sloped area that has low percentage of total organic matter and nitrogen than other populations. Magnolia sieboldii dominant population and Thuja koraiensis dominant population was found in the steep sloped area that has high percentage of total organic matter and nitrogen than other populations. Thuja koraiensis dominant population was found in the gentle sloped area that has high percentage of altitudinal and rock exposure. Current status of Rhododendron brachycarpum is very vulnerable with a collection of herbs constantly threatening the species' survival. Thus, concrete conservation plans to protect natural habitats should be set up as soon as possible.

• Journal of the Korean Institute of Landscape Architecture
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• v.16 no.1
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• pp.27-35
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• 1988

Size characteristics of three widely used landscape trees were analized to establish a methodology of size prediction as time Passes. Tree height, tree width, stem diameter(breast or surface), canopy length and tree age were measured directly and indirectly(by using photograph), and the data were analized by using regression analysis through PC-SAS. The results are summarized as follows : 1. Zelkova serrata MAKINO showed relatively slow growth rate and the tree form was changed as aged. Size predictions were available by using the regression equations listed below : Surface diameter = 0.8293 x AGE Tree height = 0.4109(0.8293 x AGE) - 0.0039(0.7273 x AGE)$^2$Tree width = 0.3240(0.8293 x AGE) - 0.0024(0.1293 x AGE)$^2$Canopy length = 0.1337(0.8293 x AGE) - 0.0020(0.7293 x AGE)$^2$2. Pinus strobus L. showed relatively fast growth rate and the tree form did not change much as aged. Size predictions were available by using the regression equations listed below. Breast diameter = 0.756 x AGE Tree height = 0.7695(0.756 x AGE) - 0.0164(0.75\ulcorner x AGE)$^2$Tree width = 0.4331(0.756 x AGE) - 0.0079(0.75\ulcorner x AGE)$^2$Canopy length = 0.1365(0.756 x AGE) - 0.0032(0.75f x AGE)$^2$ 3. In case of Magnolia denudata DESROUX, tree form was determined relatively earlier than the other two species. Si2e predictions were available by using the regression equations listed below : Surface diameter = 0.88 x AGE Tree height = 0.5412(0.88 x AGE) - 0.0110(0.88 x AGE)$^2$ Tree width = 0.3752(0.88 x AGE) - 7.0061(0.88 x AGE)$^2$Canopy length = 0.1110(0.88 x AGE) - 0.0022(0.88 x AGE)$^2$ This study aimed to find a way to predict size change of landscaping plants. This methodology will be applied to a wide range of landscape plants to provide practical data to landscape designers.