• Title/Summary/Keyword: Symbiosis

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Principles and Directions for Urban-Rural Living Community Movement (도농공동체 운동의 추진방향)

  • Kim, Ho
    • Korean Journal of Organic Agriculture
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    • v.12 no.1
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    • pp.67-80
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    • 2004
  • Farm economy is getting worse because of the free trade trends in agriculture sector and unreasonable application of market economy principles to agricultural products. And The worldwide issues of environmental pollution as well as want of food, water and energy make human future be anxious. In addition, consumers raise questions in argument about safety of foods produced by traditional farming or imported. So I propose the urban-rural living community movement(URLCM) as an alternative plan for sustainable domestic agriculture. URLCM based on environmentally friendly agriculture and community consciousness will be able to solve many of present issues on agriculture and rural society through incessant interchanges between urban and rural community. This URLCM has to be basically founded on principles of symbiosis-coexistence and life circulation. So those that have to be driven forward arc organizing producers and consumer cooperatives, making environmentally friendly rural region and products, combining with consumer cooperatives, training the participants and so forth.

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Ascophyllum and its symbionts. VI. Microscopic Characterization of the Ascophyllum nodosum (Phaeophyceae), Mycophycias ascophylli (Ascomycetes) Symbiotum

  • Deckert, R. J.;Garbary, D. J.
    • ALGAE
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    • v.20 no.3
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    • pp.225-232
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    • 2005
  • Optical microscopy of recently living and cleared material of the fucoid, Ascophyllum nodosum (L.) Le Jolis, revealed novel aspects of its interaction with the ascomycete Mycophycias ascophylli (Cotton) Kohlmeyer and Kohlmeyer (previously Mycosphaerella ascophylli Cotton). Most host cells are associated with hyphae by lateral attachment of cell walls. Hyphae form extensive networks throughout the host thallus and show considerable differentiation in the various host tissues. In the base of epidermal cells, hyphae form multicellular rings around each host cell to produce a continuous network. In medullary regions, long, relatively unbranched and longitudinally aligned hyphae occur, with radial branches extending into cortical regions. Scattered in the inner cortex of host tissue are numerous multicellular nodes of smaller, polygonal to irregular shaped cells with five or more radiating arms of hyphae. Individual hyphal cells show a variety of specializations including swellings and appressoria-like attachments to some host cells. These observations provide the morphological basis for the mutualistic symbiosis supported by recent experimental work. We conclude that this association is best described by the term “symbiotum.”

Microbial Symbiosis in Marine Sponges

  • Lee, Yoo-Kyung;Lee, Jung-Hyum;Lee, Hong-Kum
    • Journal of Microbiology
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    • v.39 no.4
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    • pp.254-264
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    • 2001
  • Sponges are host organisms for various symbiotic microorganisms such as archaea, bacteria, cyano-bacteria and microalgae. Sponges are also sources of a wide variety of useful natural products like cyto-toxins. antifouling agents, antibiotics, and anti-inflammatory and antiviral compounds, Symbiotic microorganisms is sponges can be sources of various natural products, because metabolites previously ascribed to sponges have recently been demonstrated to be biosynthesized by symbionts. If a symbiotic microorganisms from which some natural products are derived can be cultured, the microorganism could be used in a mass production of the bioactive comopounds. We summarize recent research on iso-lation and cultivation of sponge-symbiotic microorganisms and the symbiotic relationship.

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The Effect of Benomyl Treatments on Ginsenosides and Arbuscular Mycorrhizal Symbiosis in Roots of Panax ginseng

  • Eo, Ju-Kyeong;Eom, Ahn-Heum
    • Journal of Ginseng Research
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    • v.33 no.4
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    • pp.256-259
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    • 2009
  • The effects of benomyl treatment on ginsenoside and arbuscular mycorrhizal (AM) symbiosis in the roots of Panax ginseng that were collected from two sites in Korea were investigated. The ginseng roots that were treated with benomyl showed different species compositions of AM fungi colonizing the ginseng roots, compared to untreated roots. In the analysis of ginsenoside, Rc was significantly higher in benomyl untreated roots than in benomyl treated roots. The results suggest that AM fungal species composition and ginsenosides in ginseng root could be influenced by the benomyl treatment.

A Study on the concept of 'Individual' found in works of Archigram Group (아키그램의 건축에서 나타나는 '개인'의 개념에 관한 연구)

  • Kwon, Je-Joong
    • Korean Institute of Interior Design Journal
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    • v.19 no.1
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    • pp.158-168
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    • 2010
  • The purpose of this study is to analyze the concept of 'individual' found in architecture of British Archigram Group. Although many critics and historians have judged Archigram as a simple technocrat, the concept of individual employed by Archigram since their Living City Exhibition undermine their representational works. Archigram's concept of individual was basically influenced by the European historical context since the Renaissance and at the same time by the philosophy of existentialism. Since Archigram proposed their individualistic trend In the Living City Exhibition, they have created many individualistic architecture such as Living Pod, Cushicle, Suitaloon, etc. Through these experimental projects, Archlgram's concept of individual did not intend to get rid of the society itself, but to form a society based on the individual autonomy and on the interaction between individuals. In the city of Archigram, there was ultimately the new symbiosis between individual units and this symbiosis completed new world.