• Title/Summary/Keyword: KOREAN NATIVE SPECIES

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Distribution, abundance, and effect on plant species diversity of Sasa borealis in Korean forests

  • Cho, Soyeon;Lee, Kyungeun;Choung, Yeonsook
    • Journal of Ecology and Environment
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    • v.42 no.2
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    • pp.70-76
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    • 2018
  • Background: Sasa borealis (Hack.) Makino, a clonal dwarf bamboo, is widespread in Korean forests. Although S. borealis is native to that country, its growth habit can cause considerable harm when occupying particular areas where it dominates and influences those forested communities. However, few reports have described the extent of its inhibitory effects on the vigor of co-existing plant species. Therefore, we investigated the distribution, abundance, and diversity of other plant species in the communities where this plant occurs in the east-central forests on the Korean Peninsula. Results: S. borealis was most commonly found at an elevational range of 800 to 1,200 m, on gentle, usually lower, and near valley northern slopes. Out of the 13 forest communities based on 447 forest stands that we surveyed, S. borealis was detected in eight communities, mostly where Quercus mongolica dominates. In particular, it was more common in late-successional mixed stands of Q. mongolica, other deciduous species, and the coniferous Abies holophylla. Because of their ability to expand rapidly in the forest, this plant covered more than 50% of the surface in most of our research plots. Species diversity declined significantly (F = 78.7, p = 0.000) as the abundance of S. borealis increased in the herb stratum. The same trend was noted for the total number of species (F = 18.1, p = 0.000) and species evenness (F = 91.5, p = 0.000). Conclusions: These findings clearly demonstrate that S. borealis is a weed pest and severely hinders species diversity. Authorities should be implementing various measures for ecological control to take advantage of declining chance after the recent synchronized massive flowering of S. borealis.

Specific Marker Gene Analyses for DNA Polymorphism of the Blood Cell in Korea Native Brindled Cattle (칡한우 혈액에서 DNA 다양성 분석을 통한 표지 유전자 탐색)

  • Kim, Sang-Hwan;Hong, Yeon-Sik;Lee, Ho-Joun;Yoon, Jong-Taek
    • Development and Reproduction
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    • v.15 no.4
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    • pp.315-324
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    • 2011
  • This study was conducted to detect the specific expressing genes by using RAPD-PCR and RFLP method in the Korea Native Brindled Cattle, Korean Native cow and Holstein cattle. And then, the specific marker gene was investigated by the analysis of the genes for detection significance according to the expressing pattern. We found the specific expression gene by the RAPD-PCR analysis in Korea Native Brindled Cattle. It was detected the differences of the species in the colour and external section. The Korea Native Brindled Cattle were vary low compare to the Korean Native cow and Holstein cattle by analysis result of polymorphism and distribution. And there were a found the specific marker gene by sequencing in the R9B gene fragment of Korea Native Brindled Cattle. And the sequencing result of the R9B was different between Korean Native cow and Holstein cattle. Thus, this gene can be apply as the specific marker gene in the Korea Native Brindled Cattle.

A Study on the wild Rhododendron micranthum for being used as Landscape Plant (꼬리진달래의 조경수목화를 위한 기초연구(1) : 자생지의 생육환경을 중심으로)

  • 이기의;유근창;이병용
    • Journal of the Korean Institute of Landscape Architecture
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    • v.17 no.2
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    • pp.41-46
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    • 1989
  • Rhododendron micranthum grown over the area of Kyoung Puck, Kang Weon Province is showy and very attractive evergreen broad-leaned shrub of shade resistance. This shrub is considered very useful for exploiting as a garden plant. Environments, growth characteristics and vegetation association in the wild habitat and in the garden planted with this shrub, were investigated to find out some appropriate means of propagation and cultivation of this shrub. The results thus obtained were stated as follows ; 1. Light intensity for the native habitat ranged in the proximity of 9%. The most abundant stand of this shrub occurred in the northen side of mountains, while still some plants were found in the eastern sides also. 2. Soil of the native habitat was acidic (pH 4.4) and infertility. 3. Average elevation of the native habitat was shown to be 230m above the sea level. 4. The plant of the native habitat showed an average of 3.9 new shoots per branch, whereas that of the garden planted (light intensity 100%) showed 1.2, 5% of an average was for sun-burn leaves were noted, while garden Plants(light intensity 100%) showed 90% of them. 5. Other tree species associated with Rhododendron micrathum in the native habitat were primarily Pinus densiflora and secondarily Sorbus alnifolia, hemerocallis aurautiaca, Rubus crataegifolius, and Salix hulteni. 6. Vegetation rate of plant habitats in the Rhododendron growing area was observed to be 0 to 80% involving 27 to 50 species of associated trees in the vegetation for the 10${\times}$10m quadrat area.

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Effects of Extracts of Five Species of Korean Native Forest Plants on Lipid Accumulation and Reactive Oxygen Species Production during Differentiation of 3T3-L1 Preadipocytes (3T3-L1 세포분화 중 지방축적 및 활성산소종 생성에 대한 국내 산림자원 5종 추출물의 효과)

  • Choi, Sun-Il;Lee, Jong Seok;Lee, Sarah;Lee, Hye Jin;Yeo, Joohong;Cho, Bong-Yeon;Lee, Jin-Ha;Kim, Jae-Min;Jung, Tae-Dong;Choi, Seung-Hyun;Kim, Jong-Yea;Kang, Suk-Nam;Lee, Ok-Hwan
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.46 no.4
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    • pp.523-528
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    • 2017
  • This study investigate the effects of extracts of five species of Korean native forest plants on lipid accumulation and reactive oxygen species (ROS) production during the differentiation of 3T3-L1 cells. Our results show that Korean native forest plants extracts significantly reduced lipid accumulation and ROS production during adipogenesis in 3T3-L1 cells. Especially, Rubus coreanus Miq. was most effective in the inhibition of lipid accumulation and ROS production at a concentration of $100{\mu}g/mL$. Moreover, Rubus coreanus Miq. extracts significantly inhibited adipocyte differentiation, which is dependent on down-regulation of peroxisome proliferator-activated receptor gamma, CCAAT/enhancer-binding protein alpha, and adipocyte-specific fatty acid binding protein, a key adipogenic transcription factor. Therefore, these results suggest that Rubus coreanus Miq. might be a valuable source of bioactive compounds with anti-adipogenic activity.

A Comparison of Herbage Utilization by Sheep on Native and Improved Pastures (면양에 의한 야초지와 개량초지의 초류이용성 비교)

  • 이인덕
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.8 no.3
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    • pp.147-151
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    • 1988
  • The preference, chemical composition, intake, digestibility and chewing efficiency of collected herbage sample from sheep using esophageal fistula and fecal collection method were compared to those of offered herbage samples on the native and improved pastures at the 3rd flush stage(25 cm grass height). Experimental field was treated by one plot design and the begining of September 1987, at Chungnam National University, Daejon. The results obtained are summarized as follows: 1. Preference indices were not different among herbage species on improved pasture, while those on in native pasture were markedly different and this difference seemed to depend on diet selection. 2. Chemical compositions of collected herbage samples were different from those of offered herbage samples. Crude protein content was significantly high on native pasture, but NDF, cellulose and lignin content were significantly low on improved pasture (p < 0.01). 3. DM intake, digestibility and herbage utilization percent on improved pasture were significantly higher than those on native pasture (P < 0.01). 4. Eating rate, ruminating and chewing efficiency were influenced by the amounts of NDF intake. Therefore, eating rate, ruminating and chewing efficiency on improved pasture tended to be higher than those on native pasture (p <0.01).

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Application of methylene blue color test for the detection of inherited susceptibility to hemolysis of Korean native cattle (한우(韓牛)의 선천성용혈감수성검사(先天性溶血感受性檢査)에 대한 methylene blue 청색소실시험법(靑色消失試驗法)의 적용(適用))

  • Cho, Jong-hoo
    • Korean Journal of Veterinary Research
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    • v.28 no.2
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    • pp.327-329
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    • 1988
  • Blood samples were obtained from Korean native cattle and dairy cattle of Holstein species in the slaughter house and methylene blue color tests were performed for the detection of the inherited susceptibitity to hemolysis. Glucose-6-phosphate dehydrogenase activities expressed as the optical density obtained by methylene blue color test were the highest as 0.54 in male Korean cattle, 0.62 in female Korean cattle and 0.72 in dairy cattle of Holstein species. Percent hemolysis, packed cell volume and plasma protein contents were measured and compaired with relation to the results of methylene blue color test and no correlation were observed in each.

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Geographical Isolation and Root-Associated Fungi in the Marine Terrains: A Step Toward Establishing a Strategy for Acquiring Unique Microbial Resources

  • Park, Jong Myong;Hong, Ji Won;Lee, Woong;Lee, Byoung-Hee;You, Young-Hyun
    • Mycobiology
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    • v.49 no.3
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    • pp.235-248
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    • 2021
  • This study aimed to understand whether the geo-ecological segregation of native plant species affects the root-associated fungal community. Rhizoplane (RP) and rhizosphere (RS) fungal microbiota of Sedum takesimense native to three geographically segregated coastal regions (volcanic ocean islands) were analyzed using culture-independent methods: 568,507 quality sequences, 1399 operational taxonomic units, five phyla, and 181 genera were obtained. Across all regions, significant differences in the phyla distribution and ratio were confirmed. The Chao's richness value was greater for RS than for RP, and this variance coincided with the number of genera. In contrast, the dominance of specific genera in the RS (Simpson value) was lower than the RP at all sites. The taxonomic identity of most fungal species (95%) closely interacting with the common host plant was different. Meanwhile, a considerable number of RP only residing fungal genera were thought to have close interdependency on their host halophyte. Among these, Metarhizium was the sole genus common to all sites. These suggest that the relationship between potential symbiotic fungi and their host halophyte species evolved with a regional dependency, in the same halophyte species, and of the same natural habitat (volcanic islands); further, the fungal community differenced in distinct geographical regions. Importantly, geographical segregation should be accounted for in national culture collections, based on taxonomical uniqueness.

Two Cyanidin compound from the Fruits of Acanthopanax divaricatus var. albeofructus

  • Hahn, Dug-Ryong;Park, Seon-Jin
    • Natural Product Sciences
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    • v.16 no.3
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    • pp.198-201
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    • 2010
  • Acanthopanax divaricatus var. albeofructus is one of the indigenous medicinal plant and the fruits of Acanthopanax spp. used as a remedial for "wipe out evil wind". Two anthocyanin were isolated from the fruits of Acanthopanax divaricatus var. albeofructus. Their structures were elucidated as cyanidin 3-lathyroside (1) and cyanidin 3-galactoside (2) by chemicophysical and spectroscopic analysis. And also, four chemical, syringin, chlorogenic acid, caffeic acid and acanthoside D were identified. Both anthocyanide were isolated for the first time from Acanthopanax species. cyanidin 3-lathyroside is one of the rare anthocyanin in natural resources.

A Study on the Growth Characteristics under Seedling Types of Native Woody Plants After Planting on the Disturbed Slope (훼손비탈면에 식재된 자생목본류의 묘유형별 생육특성에 관한 연구)

  • Shim, Sang-Ryul;Kim, Jae-Hwan;Jeong, Dae-Young;Moon, Seok-Ki;Koh, Jeung-Hyun
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.13 no.2
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    • pp.72-79
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    • 2010
  • This research was initiated to investigate the revegetation characteristics under seedling types of native woody plants on a disturbed slope. 4 different seedling types of woody plants (control, unit seedling plot, nature seedling plot, pot seedling plot) with the same woody plants (Rhus chinensis Mill, Albizzia julibrissin Duraz., Quercus acutissima Carr., Pinus densiflora S. et Z.) were treated with 3 replications on the experimental disturbed slope. Data such as the died number of native woody plants, growth height and visual quality were analyzed. The died number of plants were high in unit seedling plot when compared to the rest plots of seedling types. From the standpoint of died plant species, the died number were high in Rhus chinensis and Albizzia julibrissin whereas the died number were low in Quercus acutissima and Pinus densiflora. That's because we used 1-year old seedlings of Rhus chinensis and Albizzia julibrissin and 3-year old seedling Quercus acutissima and Pinus densiflora. This result indicated that the died reason of native woody seedling was not species but seedling age. Both growth height and visual quality were ranked first in the pot seedling plot, second in the nature seedling plot, third in the unit seedling plot, and last in the control plot, respectively. However, the difference of both growth height and visual quality in each seedling plot was not observed on the 11 months after planting. Especially, the main reason of low rooting and growth value in the unit seedling plot was due to wooven fabric outer crust of pot that obstruct seedling rooting into the soil. We concluded that pot seedling of native woody plants was effective in the viewpoint of the ecological disturbed slope revegetation.

A report of 10 unrecorded bacterial species of Korea, isolated from agricultural soil in 2022

  • Oung Bin Lim;Ji Soo Lee;Hyosun Lee;Ki Eun Lee;In Tae Cha;Won Jae Chi;Dong-Uk Kim
    • Korean Journal of Environmental Biology
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    • v.41 no.3
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    • pp.215-222
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    • 2023
  • In 2022, research for native prokaryotic species in Korea reported 10 unrecorded bacterial strains affiliated to phyla Actinomycetota, Bacillota, and Pseudomonadota. The strains formed monophyletic clades with the most closely related species (with ≥98.7% sequence similarity) in the 16S rRNA gene sequencing. Among them, four species of the phylum Actinomycetota, two species of the phylum Bacillota, and four species of the phylum Pseudomonadota have not been reported in Korea, suggesting unrecorded species in Korea. Information on strains such as Gram staining reaction, colony and cell morphology, biochemical characteristics, and isolation sources were provided in the species description.