• 제목/요약/키워드: SASA BOREALIS

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한국내 조릿대의 교배계에 대한 유전학적 연구 (Genetic Study of Mating System of Sasa borealis in Korea)

  • 허만규;노광수
    • 생명과학회지
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    • 제15권1호
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    • pp.33-37
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    • 2005
  • 조릿대(S. borealis)는 다년생 초본으로 한국, 일녈, 중국의 일부에 제한적으로 분포한다. 이 종은 자가 및 타가수분에 의한 혼합번식 형태를 취한다. 전분 전기영동을 이용한 12개의 대립 유전자좌위에서 종의 교배계를 조사하였다. 교배계에서 타가 및 자가 수분, 그리고 줄기의 변형으로 영양번식이 이루어지는 매우 복잡한 혼합 방식의 교배 양식은 제한된 분포, 고산식생대 등의 환경에서 생존할 수 있는 조릿대의 생존전략과도 관련이 있을 것으로 보인다 또한 일부 자생지 파괴에 대한 유효집단의 감소가 일어나 생물자원 확보를 위한 자생지 보존이 필요하다

A new record of Gustavia aominensis Fujikawa, 2008 (Oribatida: Gustaviidae) and its related species in Korea

  • Kim, Jiwon;Bayartogtokh, Badamdorj;Jung, Chuleui
    • Journal of Species Research
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    • 제6권spc호
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    • pp.71-74
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    • 2017
  • A specimen of the oribatid mite, Gustavia aominensis Fujikawa, 2008, was isolated from litter and soil samples of Sasa borealis at Cheongok Mountain Natural Recreation Forest in Bonghwa, Gyeongbuk, Korea. This is the first record of this species in Korea. We provide detailed illustrations of the diagnostic features of this species relative to the original description as well as a key for Korean Gustavia species along with illustrations.

Z-M 방식에 의한 선운산지역의 삼림군집 분류 (Classification of Forest Vegetation of Seonunsan Area, Southweatern Korea)

  • Kim, Jeong-Un;Yang-Jai Yim
    • The Korean Journal of Ecology
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    • 제9권4호
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    • pp.209-223
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    • 1986
  • The forest stands of Seonusan area, South-western Korea, were classified into three alliances and nine communities by the Z-M school scheme. Of these one alliance and four association were recognized in this study, that is, an alliance, Carpinion laxiflorae and four associations, Casrpinetum tschonoskii, Quercetum variabilis, Carpinetum laxiflorae and Rhododendro mucronulati-Pinetum densiflorae. Hierachy of Seonunsan area forest vegetation by Z-M scheme was as fallows: Pinion densiflorae Suz.-Tok. 1966. 1. Rhododendro mucronlati-Pinetum densiflorae ass.l nov., 2. Pinus thunbergii community. Carpinion laxiflorae all. nov., 1. Quercus serrata-Carpinus tschonoskii community, 2. Quercus aliena-Carpinus tschonoskii community, 3, Carp inetum tschonoskii ass. nov., a. Typical subass., b. Sasa borealis subass. 4. Quercetum variabilis ass. nov., a Sasa borealis subass. b. Typical subass, 5. Carpinetum laxiflorae ass. nov., Zelkovion serratae Miyawaki et al., 1977., 1. Orixo-Zelk ovetum serratae Miyawaki et H. Tohma 1975., a Typical subass., b. Thea sinensis facies, 2. Thea sinensis-Camellia japonica community.

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조릿대 추출물을 첨가한 식혜의 품질 특성 (Quality characteristics of Sikhye prepared with Sasa borealis extracts)

  • 서지형
    • 한국식품저장유통학회지
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    • 제23권4호
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    • pp.599-604
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    • 2016
  • 조릿대 추출물을 이용한 식혜 제조의 가능성을 검토하고 기본 제조조건을 설정하기 위하여 추출물의 첨가수준을 달리하여 식혜를 제조하고 그 품질 특성에 대해 조사하였다. 조릿대 추출물을 첨가한 경우 pH와 총산 함량은 유의적인 변화가 없는 반면 당도, 환원당, 총 폴리페놀, 총 플라보노이드 함량은 식혜 SBE-30과 식혜 SBE-50에서 유의적으로 높았다. 각 식혜의 색상은 추출물 첨가수준이 높을수록 L값의 감소 및 b값과 탁도의 증가가 뚜렷하였다. DPPH 라디칼 소거능은 식혜 SBE-5의 경우 대조구와 유의적 차이가 없었으나 10% 이상의 조릿대 추출물 첨가조건에서는 첨가수준에 비례하여 유의적으로 증가하였다. 맛에 대한 관능평가에서 비록 유의적인 차이는 확인되지 않았으나 식혜 SBE-30과 SBE-50의 점수가 높은 편이었고, 색상에 대한 선호도는 추출물의 첨가수준에 따라 점차 낮게 평가되었으며 종합적 기호도 또한 식혜 SBE-50이 낮은 경향을 나타내었다.

Sasa borealis leaves extract improves insulin resistance by modulating inflammatory cytokine secretion in high fat diet-induced obese C57/BL6J mice

  • Yang, Jung-Hwa;Lim, Hyeon-Sook;Heo, Young-Ran
    • Nutrition Research and Practice
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    • 제4권2호
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    • pp.99-105
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    • 2010
  • Obesity is considered a mild inflammatory state, and the secretion of inflammation-related cytokines rises as adipose tissue expands. Inflammatory cytokines, including tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$), interlukin 6 (IL-6) and monocyte-chemoattractant protein 1 (MCP-1), are modulated by adipose tissue and known to play an important role in insulin resistance which is the common characteristics of obesity related disorders. In this study we analyzed the effects of Sasa borealis leaves extract on inflammatory cytokines and insulin resistance in diet induced obese C57/BL6J mice. The obese state was induced by a high fat diet for 20 weeks and then the mice were divided into two groups; obese control group (OBC, n = 7) and experimental group (OB-SBE, n = 7). The OBC group was fed a high fat diet and the OB-SBE group was fed a high fat diet containing 5% Sasa borealis leaves extract (SBE) for 12 weeks. We also used mice fed a standard diet as a normal control (NC, n = 7). The body weight and adipose tissue weight in the OB group were significantly higher than those in the NC group. The effects of the high fat diet were reduced by SBE treatments, and the body weight and adipose tissue deposition in the OB-SBE group were significantly decreased compared to the OBC group. The OBC group showed higher serum glucose and insulin levels which resulted in a significant increase of incremental area under the curve (IAUC) and HOMA-IR than the NC group. Also, serum leptin, TNF-${\alpha}$, and IL-6 levels were significantly higher in the OBC group than in the NC group. In contrast, the OB-SBE group showed a reversal in the metabolic defects, including a decrease in glucose, insulin, IAUC, HOMA-IR, TNF-${\alpha}$, IL-6 and leptin levels. These results suggest that BSE can suppress increased weight gain and/or fat deposition induced by a high fat diet and theses effects are accompanied by modulation of the inflammatory cytokines, TNF-${\alpha}$ and IL-6 secretion resulting in improved insulin resistance.

지리산국립공원 조릿대의 입지환경 및 생장특성 분석과 하층식생에 미치는 영향 (Environmental Factors and Growth Properties of Sasa borealis (Hack.) Makino Community and Effect its Distribution on the Development of Lower Vegetation in Jirisan National Park)

  • 박석곤;이명훈;윤정원;신현탁
    • 한국환경생태학회지
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    • 제26권1호
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    • pp.82-90
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    • 2012
  • 본 연구는 온대 낙엽활엽수림 임상내 조릿대군락의 입지환경요인과 그 생장특성을 밝혀내고, 조릿대군락이 하층식생 및 천연갱신에 미치는 영향을 분석하였다. 지리산국립공원 중산리지역의 낙엽활엽수림에서 조릿대군락이 분포하는 지역을 조사대상지로 설정하여 식생조사 및 환경요인을 조사했다. 이곳에서 조릿대의 생장특성으로서 조릿대의 우점도 및 높이, 잎층두께를 조사했고, 환경요인으로서 관목층과 지피층의 광합성광량자속밀도(PPFD), 토양의 화학적 특성을 조사했다. 또한 조사구에서 지피층에 출현하는 식물상, 목본의 개체수 및 높이를 조사했다. 그 결과로서 낙엽활엽수림 임상내 조릿대군락의 높이 및 잎층두께는 빛조건과 밀접한 관계지만, 특정입지환경이나 식생 등의 영향이 단순하게 조릿대 분포 및 생장특성을 결정하지 않는 것으로 판단된다. 이는 조릿대가 영양번식식물로서 복수의 지상간이 지하경으로 연결된 상태로 산림내의 불균질한 자원환경에서 광범위하게 분포할 수 있는 조릿대의 독특한 생존전략과 깊게 관련되어 있을 것이다. 또한, 밀생하고 높게 자란 조릿대는 지피층의 PPFD를 차단하는 것으로 치수발생 및 생장을 방해해 하층식생의 종다양성을 떨어뜨렸다.

가야산 국립공원의 삼림식생 (The Forest Vegetation of Mt. Kaya National Park, Korea)

  • 정민호;유현경;길봉섭;신성은;김창환
    • The Korean Journal of Ecology
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    • 제20권2호
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    • pp.145-151
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    • 1997
  • A census of the forest vegetation of Mt. Kaya National Park was taken with respect to the medthods of ordination and classification. Eight groups were classified by cluster analysis : Quercus mongolica, Q. mongolica-Sasa borealis, Q. serrata, Q. variabilis, Carpinus laxiflora, Cornus controversa, Fraxinus mandshurica and Pinus densiflora. Among them, the Q. mongolica group and Q. mongolica-S. borealis group, the F. mandshurica group and C. controversa group showed similar floristic compositions to each other. The interrelationship between the floristic compositon of the vegetation and soil environment was analyzed by PCA, the Q. mongolica group and the Q. mongolica-S. borealis group were distributed in areas of high CEC and total nitrogen content, while the Q. serrata. Q. variabilis. C. laxiflora and Pinus densiflora groups formed their communities in the more moderate areas of pH, soil moisture and soil organic matter. F. mandshurica and C. controversa groups were distributed in the areas of high soil moisture, soil organic matter, pH and available phosphate.

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Ecological Characteristics and Distribution of Plant Resources of Pyrus and Malus sp. in Jindong Valley, Gangwon Province

  • Ahn, Young-Hee;Chung, Kyu-Hwan;Choi, Kwang-Yool;Park, Dae-Sik
    • Plant Resources
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    • 제4권3호
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    • pp.130-139
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    • 2001
  • Four major naturally populated areas around the Jindong valley in Inje-Gun, Gangwon province for wild Pyrus ussuriensis, Malus sieboldii, and Malus baccata are mostly located on the southeast side of the mountains at 630-745m in altitude at sea level and are in very good sunny areas. The total of 77 taxa dividing into 32 families, 58 genera, 65 species, and 12 varieties has been inhabited in these areas. Most of these plants are heliophytes, which love sunshine, but some of rhizo-plants such as Sasa borealis, climbing plants such as Actinidia arguta and Celastrus orbiculatus, or naturalized plants like Bidens frondosa are also shown. These areas have been continually destroyed, so it is possibly thought that the second transition has been progressed. The index of species diversity of plant groups in these areas is 0.672∼1.465 based on the Shannon-Wiener's method, but its index for the area that rhizo-plants like Sasa borealis are growing as an under planting decreases relatively. In this study, the oldest plant of Pyrus ussuriensis in Korea, which is 120cm in diameter at breast height (DBH), 19m in tree height and 25m in width, has been found.

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The Forest Vegetation of Mt. Jangan County Park in Jangsu-Gun, Jeonlabuk-Do, Korea

  • Kim, Chang-Hwan;Ahn, Deug-Soo
    • The Korean Journal of Ecology
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    • 제23권6호
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    • pp.439-444
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    • 2000
  • Forest vegetation in Mt. Jangan County Park, Jeonlabuk-Do, Korea, was investigated by classification and ordination methods. By the cluster analysis (classification) method, nine groups were recognized as follows : Quercus serrata community, Quercus serrata- Carpinus laxiflora community, Cornus controversa community, Fraxinus mandshurica community, Carpinus laxiflora community, Quereus variabilis community, Quercus mongolica - Sasa borealis community. Quercus mongolica - Symplocos chinensis for. pilosa community and Quercus mongolica - Rhododendron schlippenbachii community. These groups showed differences in species composition and environmental characteristics, but Quercus mongolica - Sasa borealis community, Quercus mongolica - Symplocos chinensis for. pilosa community and Quercus mongolica - Rhododendron schlippenbachii community among them showed very similar floristic composition to each other. The interrelationship between the floristic composition of the vegetation and environmental factors was analysed by principal component analysis (PCA). Quercus mongolica community was distributed at a high altitude (900~1200 m above sea level). Fraxinus mandshurica community and Cornus controversa community were differentiated from the other communities with high contents of soil moisture and pH. On the other hand, Carpinus laxiflora community and Quercus variabilis community were distributed at places with adequate levels of soil moisture, soil organic matter. and at low altitude. In this study, the altitude and soil moisture were the main factors determining the forest vegetation. They were strongly correlated with the dominant compositional gradient at the localities examined.

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