• Journal of Life Science
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• v.21 no.2
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• pp.328-333
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• 2011

Melatonin has been known as an animal hormone. However, melatonin exists in diverse organisms including higher plants. The biosynthesis and physiological roles for melatonin in plants is still largely unknown, although both dicot and monocot plants have melatonin and some medicinal plants even contain large amounts of melatonin. In this study we detected melatonin in diverse Viola plants, in which melatonin had not been examined so far, by reverse phase HPLC analysis, demonstrating the wide existence of melatonin in the genus of Viola. We then fed tryptophan (Trp) and tryptamine (TAM) to the incubation medium for Viola leaf sections to test their effects on melatonin formation. Trp is also the hypothesized starting material of melatonin in plants, and TAM is the following intermediate produced by the decarboxylation of Trp. Trp feeding did not affect the contents of melatonin. In contrast, TAM feeding clearly increased the level of melatonin in Viola leaves. Because TAM is derived from Trp, we concluded that the Trp-TAM pathway exists in Viola plants as well. Ineffectiveness of Trp feeding to the change of melatonin contents supports the hypothesis that the decarboxylation step from Trp to TAM is the rate-limiting step in plant melatonin biosynthesis.

• Journal of Environmental Science International
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• v.18 no.6
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• pp.633-644
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• 2009

The vascular plants in the Gyeryongsan National Park were listed 227 taxa; 71 families, 148 genera, 196 species, 1 subspecies, 26 varieties and 4 forms, Among them, trees and herbs were 103 taxa (45.4%), 124 taxa (54.6%), respectively. The rare plants were identified 6 taxa such as Paeonia obovata (Legal protection species), Viola albida, Acanthopanax chiisanensis, Lilium distichum, Lilium callosum and Goodyera schlechtendaliana by the Korea Forest Service. Based on the list of Korean endemic plants, 8 taxa were recorded; Cephalotaxus koreana, Pseudostellaria multiflora, Thalictrum uchiyamai, Indigofera koreana, Acanthopanax chiisanensis, Asperula lasiantha, Weigela subsessilis and Carex okamotoi. Based on the list of approved for delivering overseas of plants, 6 taxa were recorded; Viola albida, Acanthopanax chiisanensis, Asperula lasiantha, Carex okamotoi, Lilium distichum and Lilium callosum. Specific plant species by floral region were total 21 taxa (9.3%); Paeonia obovata in class V, 5 taxa (Betula davurica, Acer palmatum, Asperula lasiantha, Lonicera subhispida, Phaenosperma globosa) in class III, 4 taxa (Viola orientalis, Acanthopanax chiisanensis, Ostericum melanotilingia, Lilium distichum) in class II and 11 taxa (Cephalotaxus koreana, Betula schmidtii, Quercus variabilis, Aphananthe aspera, Ilex macropoda, Meliosma oldhamii, Tilia amurensis, Lilium callosum, Erythronium japonicum, Polygonatum inflatum, Hosta capitata) in class I. It is important that relationship between national and local government will be needed for preservation of natural environment of Gyeryongsan National Park. As well, a long time of monitering and systematical management counterplan will be required.

• Korean Journal of Environment and Ecology
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• v.16 no.4
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• pp.345-358
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• 2003

The vascular plant species in the areas of Gonamsan and Shiribong in the Baekdudaegan were summarized as 295 texa: 89 families, 193 genus, 245 species, 44 varieties and 6 forms.10 taxa were recorded in the surveyed areas as the Korean endemic plants: Hosta capitat (Liliacease), Polygonatum lasianthum var. corenum (Liliaceae), Chloranthus japonicus (Cloranthaceae), Salix hulteni (Salicaoeae), Clematis richotoma (Ranunculaceae), Spiraea prunifolia for. simpliciflora (Rosaceae), Vicia unijuga (Fabaceae), Viola albida (Violaceae), cornus walter(Cornaceae), Weigela subsessilis (Caprifoliaceae).According to the list of Korean rare and endangered plants complied in the studied areas:Iris ensata var. spoyanea(Iridaceae), Viola albida (Vioaceae) and Aristolochia contorta (aristolochiaceae) Due to the rapid destruction and increase of visitors and the studied areas are located close to the villages, the naturalized plant species in the areas were more frequently appeared than the rare and endangered plant species.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.15 no.1
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• pp.35-51
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• 2012

The vascular plants in Bukhansan Dulegil, Jingwan-dong Wetland and Bukhan-dong Cheolgeoji were listed 432 taxa (8.9% of all 4,881 taxa of vascular plants); 95 families, 274 genera, 345 species, 2 subspecies, 69 varieties and 16 forms. Divided into woody plants were 145 taxa (33.6%) and herbaceous plants were 287 taxa (66.4%). The Bukhansan Dulegil were listed (Myeongsang-gil 159 taxa, Huingureum-gil 227 taxa, Wooyiryeong-gil 216 taxa, Banghakdong-gil 139 taxa, Boru-gil 199 taxa), Jingwan-dong Wetland were listed 147 taxa and Bukhan-dong Cheolgeoji were listed 129 taxa. Based on the list of rare plants by Korea Forest Service and Korea National Arboretum were Viola albida Palibin (Violaceae), Iris minutiaurea Makino (Iridaceae) and Korea National Arboretum were endemic plants, Philadelphus schrenkii Rupr. var. schrenkii (Saxifragaceae), Weigela subsessilis L.H. Bailey (Caprifoliaceae). Based on the list of floristic regional indicator plants by Korean Ministry of Environment were total 22 taxa; Wisteria floribunda DC. for. floribunda in class IV, 3 taxa (Betula davurica Pall., Mukdenia rossii Koidz., Glechoma grandis Kuprian., etc.) in class III, 5 taxa (Acer triflorum Kom., Viola orientalis W. Becker, Heloniopsis koreana Fuse & Al., etc.) in class II and 13 taxa (Camptosorus sibiricus Rupr., Clematis patens C. Morren & Decne., Cirsium pendulum Fisch. ex DC., etc.) in class I. Based on the list of naturalized plants, 16 families, 35 genera, 37 species, 3 varieties, 1 form, total 41 taxa (Rumex crispus L., Abutilon theophrasti Medicus, Panicum dichotomiflorum Michx. etc.), naturalization rate was 9.5% of all 432 taxa of vascular plants and urbanization index was 13.3% of all 309 taxa of naturalized plants. Ecosystem disturbing wild plants were 5 taxa; Rumex acetocella L., Ambrosia artemisiifolia L., Ambrosia trifida L. var. trifida, Eupatorium rugosum Houtt., Aster pilosus Willd.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.13 no.4
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• pp.18-29
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• 2010

The vascular plants in ecological forest site on the Gujaebong (Mt.), Hadong were listed 338 taxa; 85 families, 219 genera, 290 species, 1 subspecies, 40 varieties and 7 forms. Divided into 338 taxa; woody plants were 121 taxa (35.8%) and herbaceous plants were 217 taxa (64.2%). Based on the legal protection species, endangered wild plants II were recorded; Aconitum austro-koreense, Corylopsis gotoana var. coreana and rare plants (IUCN) by the Korea Forest Service and Korea National Arboretum 5 taxa were recorded; Botrychium virginianum, Aconitum austro-koreense, Coreanomecon hylomecoides, Corylopsis gotoana var. coreana, Viola albida. Based on the list of Korean endemic plants, 13 taxa were recorded; Cephalotaxus koreana, Thalictrum actaefolium, Vicia nipponica, Indigofera koreana, Stewartia koreana, Weigela subsessilis, etc. Based on the list of approved for delivering overseas of plants, 5 taxa were recorded; Coreanomecon hylomecoides, Vaccinium oldhami, Paulownia coreana, Asperula lasiantha, Carex okamotoi. Specific plant species by floral region were total 21 taxa (6.2% of all 338 taxa of vascular plants); Aconitum austro-koreense, Corylopsis gotoana var. coreana in class V, Cimicifuga heracleifolia, Coreanomecon hylomecoides in class IV, 4 taxa (Stewartia koreana, Phacellanthus tubiflorus, Lonicera subhispida, etc.) in class III, Potentilla dickinsii, Viola orientalis in class II, 11 taxa (Aconitum jaluense, Angelica anomala, Erythronium japonicum, etc.) in class I. The naturalized plants in the surveyed sites were 8 families, 15 genera, 15 taxa (Phytolacca americana, Crassocephalum crepidioides, Lolium perenne, etc.) and naturalization rate was 4.4% of all 338 taxa of vascular plants.

• Archives of Pharmacal Research
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• v.27 no.7
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• pp.730-733
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• 2004

Bioassay-guided fractionation has led to the isolation of triterpenoid saponins such as Acutoside A (3-O-[O-${\beta}$-D-glucopyrano$yl-(1${\to}$2)-O-${\beta}$-D-glucopyranosyl] oleanolic acid) from the whole plants of Viola hondoensis. Among them, Saponin 1 exhibited potent inhibitory activity against matrix metalloproteinase (MMP)-1, and prevented the UV-induced changes in the MMP-1 expression. In addition, compound was isolated from this plant for the first time.

• Korean Journal of Environment and Ecology
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• v.17 no.3
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• pp.210-223
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• 2003

This study was carried out to investigate the flora of Mt. Baekwoon. The flora of Mt. Baekwoon was surveyed from October, 2000 to August, 2001. In the results of survey, the vascular plant species in Mt. Baekwoon were summarized as 468 taxa; 90 families, 272 genera, 411 species, 1 subspecies 49 varieties and 7 forms. The rare plants designated by Korea Forestry Service were nine species; Lilium distichum, Gastrodia elata, Viola diamantica, Hylomecon hylomeconoides, Aristolochia contorta, Asarum maculatum, Rodgersia podophyllu, Viola albida, Scopolia japonica and Scrophularia koraiensis. And the endemic plants were nineteen species; Asarum maculatum, Melandryum seoulense, Clematis trichotoma, Aconitum pseudo-laeve var. erectum, Hylomecon hylomeconoides, Chrysosplenium barbatum, Spiraea prunifolia for. simpliciflora, Robus hongnoensis, Vicia venosa var. cuspidata, Tilia taquetii, Viola seoulensis, Viola diamantica, Ajuga spectubilis, Scrophularia koraiensis, Weigela subsessilis, Adenophora remotiflora, Cirsium setidens, Saussurea macrolepis and Saussurea seoulensis.

• Korean Journal of Environment and Ecology
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• v.15 no.4
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• pp.293-318
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• 2002

As one of the botanical hot spots of the Korean peninsula, the vascular plant species in the areas of Taebaeksan, Hambaeksan, Geumdaebong(Peak) and Maebongsan were summarized as 694 taxa, 89 families, 302 genus, 579 species. 102 varieties and 13 forms. Based on the list of rare and endangered plants from the Forest Research Institute and the Ministry of Environment, 22 species were recorded in the studied areas: Thuja koraiensis(Cupressaceae), Arisaema heterophyllum(Araceae), Disporum ovale(Liliaceae), Tricyrtis dialata(Liliaceae), Lilium distichum(Liliaceae), Anemone koraiensis(Ranunculaceae), Rodgersia podophylla(Saxifragaceae), Rosa marretii(Rosaceae), Viola diamantica(Violaceae), Viola albida(Violaceae), Echinopanax horridum(Araliaceae), Acanthopanax chiisannensis(Araliaceae), Lysimachia coreana(Prinmulaceae), Syringa velutina var. kamibayashii, Halenia corniculata(Gentianaceae), Partrinia saniculaefolia(Valerianaceae), Adenophora grandiflora(Campanulaceae), Cacalia pseudo-taimingasa(Compositae) Iris odaesanensis(Iridaceae), Leontice microrhyncha(Berberidaceae), Rpdgersia tabularis(Saxifragaceae), and Acanthopanax sentico년(Araliaceae), Among them the four species were recorded from the list of the Ministry of Environment. As most of the species were recorded from the mountain-trails, the long-term habitat monitoring for the species is required .

• Journal of Forest and Environmental Science
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• v.15 no.1
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• pp.44-64
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• 1999

The flora of vascular plants investigated in Mt. Hyangro-Bong was 450 taxa belonging to 86 families, 254 genera, 393 species, 2 subspecies, 51 varieties, 4 formae. Among the investigated vascular plants, Korean endemic plants (Carex okamotoi, Salix koriyanagi, Clematis chisanensis, Aconitum pseudo-laeve var. erectum, Viola diamantiaca, Sanguisorba hakusanensis, Vicia venosissima, Patrinia saniculaefolia, Hanabusaya asiatica, H. asiatica for. alba etc.) were 23 taxa; rare and endangered plants(Disporum ovale, Lilium distichum, Trillium kamtschaticum, Gastrodia elata. Clematis chisanensis, Rodgersia podophylla, Rosa marretii, Viola diamantiaca, Syringa wolfii, Hanabusaya asiatica etc.) were 17 taxa; naturalized plants(Dactylis glomerata. Poa pratensis, Rumex acetosella, Gypsophila oldhamiana, Lepidium apetalum, Oenothera odorata, Aster pilosus, Carduus crispus, Erigeron annuus, Taraxacum officinale etc.) were 14 taxa.

• Korean Journal of Plant Resources
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• v.19 no.2
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• pp.277-295
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• 2006

Vascular plants of Mt. Daedeok were composed of 81 families, 266 genera, 358 species, 1 subspecies, 69 varieties and 14 forma, totaling 442 taxa. Seventeen species among the 442 species were Korean endemic and 15 rare plants such as Anemone koraiensis, Eranthis stellata, Aristolochia manchuriensis, Viola albida, Viola diamantiaca, Acanthopanax senricosus, Acanthopanax chiisanense, Anagaltidium dichotomum, Scrophularia koraiensis, Adenophora grandiflora, Lilium cernuum, Lilium medeoloides, Lloydia triflora, Iris odaesanensis and Cypripedium macranthum were also investigated. The naturalized plants were 6 families, 15 genera, 16 species, totaling 16 taxa. Life form spectra was $H-D_4-R_5-e$ type and the use of plants were composed edible 43.2%, pasture 41.0%, medical 32.8%, ornamental 12.6%, respectively. The forest vegetation of Mt. Daedeok was classified Quercus mongolica community group with Betula emanii-Quercus mongolica community and typical community and Juglans mandshurica community.