• Korean Journal of Plant Resources
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• v.32 no.1
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• pp.86-107
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• 2019

The vascular plants of Island Dolsando, located in Yeosu-si, Jeollanam-do were surveyed 15 times from June 2017 to March 2018. Based on the collected specimens, there were 570 taxa; 113 families, 338 genera, 517 species, 1 subspecies, 49 varieties and 3 formas respectively. 18 taxa of Korean endemic species such as Asarum maculatum Nakai were found. There were total 90 taxa of floristic regional indicator plants specially designated by the Ministry of Environment (Level V to I), 4 taxa of rare plants and 8 taxa of endangered plants including Ligularia taquetii (H. $L{\acute{e}}v.$ & Vaniot) Nakai.

• Journal of Forest and Environmental Science
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• v.13 no.1
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• pp.1-27
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• 1997

This study was to survey the flora of resources vascular plants in the Experiment Forests of Kangwon National University. Resources vascular plants were composed of 98 families, 345 genera, 551 species, 2 subspecies, 88 varieties, 10 formae, and 2 hybrid, totaling 653 taxa. Among the investigated resources plants, Korean endemic plants and rare or endangered plants were distributed 20 taxa and 18 taxa, respectively. There were 27 taxa of Naturalized plants in this study area, which would have unpredictable influence on the natural ecosystem. The urbanized index(UI) of all over the investigated areas was about 12.4%. Useful resources plants were composed edible source(42.1%), medicinal source(33.8%), pasture source(28.8%), ornamental source(11.8%), timber source(5.2%), fiber source(1.4%), industrial source(1.1%). Vascular plants of unknown use were 140 taxa(21.4%).

• Journal of Food Hygiene and Safety
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• v.33 no.6
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• pp.427-437
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• 2018

In this study, 23 ethanolic extracts from 20 medicinal plants were evaluated for biological activities. Results revealed that of 23 samples, seven samples have demonstrated good antimicrobial activity. Minimum inhibitory concentrations were 0.4-2.0 mg/mL, while minimum bactericidal concentrations were mostly high 0.8-2.0 mg/mL for selected seven samples. Five samples revealed > 70 mg gallic acid equivalent (GAE)/g of total phenolic contents. Among test samples, six samples exhibited > 80% inhibition of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical and only two samples exhibited > 80% inhibition of 2,2'-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) radicals. A total of five test samples revealed Trolox equivalent antioxidant capacity more than $1000{\mu}m/g$. The MTT assay indicated that eight test samples exhibited > 90% viability of murine macrophage cells (RAW 264.7) at $250{\mu}g/mL$ and suppressed iNOS mRNA expression at transcriptional level when stimulated by lipopolysaccharide (LPS). Some medicinal plants revealed promising results, and so they have prospective for further more inclusive studies.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.12 no.5
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• pp.42-58
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• 2009

This study was carried out to survey the vascular plants of the construct-reserved site of ecological forest in Kohang-ri, Sangri-myeon, Yecheon-gun, Gyeongsangbuk-do, Korea. The results are as follows. The vascular plants in this site were recorded as 392 taxa; 85 families, 254 genera, 341 species, 45 varieties and 6 forma. The Korean endemic plants were 5 taxa; Salix hallaisanensis, Clematis trichotoma, Chrysosplenium barbatum, Philadelphus schrenckii and Weigela subsessilis. The rare plants designated by Korea Forest Service were 2 taxa; Iris ensata var. spontanea and Aristolochia contorta. The naturalized plants were 25 taxa; Bromus tectorum, Dactylis glomerata, Panicum dichotomiflorum, Bilderdykia dumetora and so forth. In the results of analysis by floristic region, the specific plants were summarized as 31 taxa; Matteuccia struthiopteris, Oxalis obtriangulata, Betula davurica, Cimicifuga heracleifolia and so forth. The plants with approval for delivering oversea were 4 taxa; Salix hallaisanensis, Aristolochia controrta, Clematis trichotoma and Chrysosplenium barbatum. The plant resources were 186 taxa of ornamental plant, 241 taxa of edible plant, 274 taxa of medicinal plant and 202 taxa of others.

• Korean Journal of Medicinal Crop Science
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• v.20 no.5
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• pp.301-307
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• 2012

IPP isomerase (Iso) and Limonene synthase (Limo) are important enzymes in terpenoids biosynthesis pathway. The wild type and each metabolically engineered (Iso and Limo) transgenic spearmint (Mentha spicata Linne) plants were compared for their growth patterns and the contents of essential oil in in vitro culture media. The profile of terpenoid metabolites was obtained from the essential oil of the metabolically engineered transgenic spearmint, which was extracted using a modified SDE method, by GC-MS analysis. The growth of wild spearmint was more profuse in B5 culture medium than in other media. Significant differences in leaf and root growth patterns were observed between metabolically engineered transgenic and wild type spearmint plants. The leaves of the transgenic spearmint plants were slightly elongated but were dramatically narrower than those of wild type spearmints. The content of essential oil of transgenic spearmint was different slightly depending on the target terpenoid genes. The content of essential oils in Limo transgenic plants was higher than that of Iso, except for transgenic plant in B5 medium. The transgenic spearmint produced more terpenoids than the wild type. Iso spearmint extracts showed eleven terpenoids and a phenylpropane, while Limo spearmint extracts contained nine terpenoids. However, extracts from the wild type showed the presence of only four terpenoids.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.10a
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• pp.73-73
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• 2019

Angelica gigas Nakai (Korean danggui), a member of the Umbelliferae family, is a Korean traditional medicinal plant whose roots have been used for treating gynecological diseases. Transcriptomics is the study of the transcriptome, which is the complete set of RNA transcripts that are produced by the genome, using high-throughput methods, such as microarray analysis. In this study, transcriptome analysis of A.gigas Nakai was carried out. Transcriptome sequencing and assembly was carried out by using Illumina Hiseq 2500, Velvet and Oases. A total of 109,591,555 clean reads of A. gigas Nakai was obtained after trimming adaptors. The obtained reads were assembled with an average length of 1,154 bp, a maximum length of 13,166 bp, a minimum length of 200 pb, and N50 of 1,635 bp. Functional annotation and classification was performed using NCBI NR, InterprotScan, KOG, KEGG and GO. Candidate genes for phenylpropanoid biosynthesis were obtanied from A.gigas transcriptome and the genes and its proteins were confirmed through the NCBI homology BLAST searches, revealing high identity with other othologous genes and proteins from various plants pecies. In RNA sequencing analysis using an Illumina Next-Seq2500 sequencer, we identified a total 94,930 transcripts and annotated 71,281 transcripts, which provide basic information for further research in A.gigas Nakai. Our transcriptome data reveal that several differentially expressed genes related to flower color in A.gigas Nakai. The results of this research provide comprehensive information on the A.gigas Nakai genome and enhance our understanding of the flower color related gene pathways in this plant.

• Journal of Plant Biotechnology
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• v.49 no.3
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• pp.213-221
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• 2022

Wild garlic (Allium victorialis var. platyphyllum, AVVP) is a nontimber forest product used as an edible and medicinal vegetable. AVVP is usually propagated form offspring bulbs but it takes a long time to harvest. Using tissue culture technology could overcome this problem. This study investigated the optimal conditions for shoot multiplication, root growth, and plant growth by scooping AVVP bulbs. AVVP bulbs harvested from Ulleung Island, Korea, the main producer of AVVP, were surface-sterilized and used for in vitro propagation. Shoot multiplication was performed by the scooping method. More than five multiple shoots were induced from scooped tissue in Quoirin and Lepoivre (QL) medium containing plant growth regulators (PGRs); the maximum number of multiple shoots were induced from scooped tissue in QL medium containing 0.45 μM thidiazuron (TDZ) after 16 weeks of culture. Roots were induced directly at the base of the shoots in all treatments. In vitro rooting depended on the type of PGRs, and the best root-inducing treatment was QL medium containing 9.84 μM indole-3-butyric acid (IBA). Plants with in vitro roots were transferred to pots containing artificial soil and successfully acclimatized for 4 weeks. The acclimatized plants showed a survival rate of 80% after 20 weeks and gradually promoted growth depending on the acclimatization period. The results of this study will be of great help to AVVP dissemination through sustainable mass propagation.

• Journal of Korean Society of Forest Science
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• v.110 no.2
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• pp.189-197
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• 2021

This study aims to optimize the appropriate concentration of fertilizers for Sageretia thea by analyzing growth performances (height and root collar diameter) and physiological characteristics (photosynthesis, chlorophyll contents, and chlorophyll fluorescence reaction). As fertilizer concentration was increased to 1.5 g·L^-1, growth increased, but it decreased at 2.0 g·L^-1 treatment. Root collar diameter growth was reduced because of higher fertilizer concentrations. Photosynthesis reactions showed the highest CO₂ reaction curves, maximum photosynthesis rate, and maximum carboxylation rate in the 1.5 g·L^-1 fertilizer treatment. The chlorophyll fluorescence reaction and SPAD values revealed that fertilizer treatment improves photosynthesis efficiency and robustness compared with untreated control. Therefore, the appropriate fertilizer concentration for producing good seedling quality of Sageretia thea is 1.0~1.5 g·L^-1.

• Korean Journal of Medicinal Crop Science
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• v.10 no.4
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• pp.249-252
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• 2002

Several plant growth regulators were examined for on their effect on the in vitro propagation of Kalopanax pictus$(T_{HUNB}.)$ $(N_{AKAI}.)$ on WPM medium. Among the cytokinins tested, BA at $13.32\;{\mu}M$ appeared to be the most effective for multiple axillary shoot formation. Although the addition of $2.89\;{\mu}M\;GA_3$ promoted stem elongation, it produced morphologically abnormal leaves and stems. For rooting of the shoots, $4.9\;{\mu}M$ IBA seemed to be more effective than $2.69\;{\mu}M$ NAA. When the regenerated plants were transferred on artificial mixture containing vermiculite and peat-moss (1 : 1, v/v), 81% of them survived and grew normally.

• Journal of agriculture & life science
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• v.46 no.5
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• pp.25-35
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• 2012

This study was carried out to classify the folk plants in Ulleung island. According to the survey results from 553 sheets of 55 residents at 20 places from march 2009 to september 2010, the folk plants in Ulleung island consisted of a total 113 taxa; 51 families, 93 genera, 98 species, 2 subspecies and 13 varieties. Among the investigated 113 taxa; 5 Korean endemic plants, 14 rare plants and 5 naturalized plants were also included. The use by usage of 113 taxa was; 72 as medicinal, 65 as edible, 5 as ornamental, etc., respectively, so the medicinal use is the highest. The most useful part was leaf, followed by fruit and root. The consistency comparison between the korean name and the local name were the highest in the people in 40's and the lowest in those in 70's.