• Title/Summary/Keyword: 엽록체

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Ecophysiology of Photosynthesis 1: Effects of Light Intensity and Intercellular $CO_2$ Pressure on Photosynthesis (광합성의 생리생태(1) - 광도와 엽육내 $CO_2$분압 변화에 대한 광합성 반응 -)

  • 김판기;이은주
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.3 no.2
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    • pp.126-133
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    • 2001
  • 녹색식물과 같이 독립영양생물이 빛에너지를 이용하여 $CO_2$와 물로 탄수화물을 만드는 일련의 반응을 광합성이라 한다. 그 일련의 반응 중에서(그림 1) 반응 I과 II는 틸라코이드(thylakoid)에서, 반응 III은 스트로마(stroma)에서, 반응 IV는 엽록체내와 세포질에서 일어나는 반응의 상호작용에 의하여 나타난다. 과거에는 반응 I과 II를 명반응, 반응 III과 IV를 암반응이라 부르기도 하였다.(중략)

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Chlorophyll Content and Genetic Variation of Ginkgo biloba L. Planted on Streets in Seoul (도심지역 은행나무 가로수의 엽록소 함량 및 유전변이)

  • 김판기;이용섭;구영본;이재천;정용문
    • Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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    • 2001.06a
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    • pp.171-174
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    • 2001
  • 식물의 대사과정을 통하여 흡수된 대기오염물질은 많은 단계의 해독과정 거치게 된다. SO$_2$ 의 경우는 세포질에서 그 대부분이 SO$_{3}$$^{2-}$ 로 용해되고 일부는 HSO$_{3}$ $^{-}$의 형태로 용해된다. 용해된 SO$_{3}$$^{2-}$ 는 아황산산화효소에 의해서 엽록체에서 생성된 $O_{2}$$^{-}$와 산화 반응하여 비교적 독성이 낮은 SO$_{4}$$^{2-}$ 로 변화한다.(중략)

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국제학술회의 참관기-영국조류학회 학술발표회

  • Han, Tae-Jun
    • The Science & Technology
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    • v.31 no.6 s.349
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    • pp.30-31
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    • 1998
  • 1953년 창립된 영국 조류학회는 매년 정초에 전국 각 대학을 순회하면서 학술대회를 열고 있는데 올해는 지난1월5일부터 8일까지 런던대학 RHC에서 열렸다.'환경변화 추적도구로서의 조류의 이용성'이란 주제아래 14개국에서 1백50여명의 학자들이 참가한 가운데 열린 이번 학술대회에서 인천대 자연과학대 한태준교수는 '파래라고 불리우는 해조류를 대상으로 자외선이 세포내 엽록체와 생식세포의 운동성에 미치는 영향'등 네편의 논문을 발표했다.

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Blue-Light Dependent Chloroplast Rearrangement In Panax ginseng C.A. Meyer (인삼의 청색광의존성 엽록체재배치(Chloroplast rearrangement))

  • 양덕조;김명원
    • Journal of Ginseng Research
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    • v.17 no.3
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    • pp.236-239
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    • 1993
  • We studied the chloroplast rearrangement, short-term regulation depending on the light conditions in plants, and the characteristic of photosynthic rate as affected by in Panax ginseng C.A. Meyer. The chloroplast rearrangement of ginseng mesophyll cell was induced with the irradiation of blue light (400~500 nm) and through this process the rate of leaf transmittance increased 5~7.5%. The time to reach the maximum value of photosynthesis was shorter above 20 minutes with the blue light irradiation than that of the red light.

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Expression of Chloroplast Genes upon Plant Development (식물의 분화에 따른 엽록체 유전자의 발현)

  • 홍주봉
    • Proceedings of the Botanical Society of Korea Conference
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    • 1987.07a
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    • pp.103-113
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    • 1987
  • Along the developmental processes in higher plants, chloroplast follows a major route of development which is proplastid - etioplast - chloroplast. Development of chloroplast can be determined according to the expressions of the genes coded in the chloroplast DNA as well as in the chromosomal DNA. Most of the processes occuring in proplastid and etioplast seems to be coded in the chromosomal DNA, which the development of chloroplast from etioplast upon the exposure of plants to light is determined by harmonious expressions of the genes in the chloroplast and the chromosome.

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Effect of Cupric Ion on the PSII Activity in Isolated Chinese Cabbage Chloroplasts (배추 엽록체의 광계II 활성에 미치는 구리이온의 영향)

  • 박인호
    • Journal of Plant Biology
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    • v.30 no.3
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    • pp.181-187
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    • 1987
  • Copper inhibited PSII-mediated O2 evolution (H2OlongrightarrowDCIP, H2OlongrightarrowSiMo) but not PSImediated O2 uptake(DCIP. Asc.longrightarrowMV) in isolated Chinese cabbage chloroplasts. Copper toxicity on PSII-mediated O2 evolution was higher at alkaline condition than at acidic condition and was inhanced by light illumination after copper treatment. The increased toxicity by light illumination was not recovered by subsequent dark treatment. The inhibitory effect of copper on H2OlongrightarrowDCIP reaction was higher than that on H2OlongrightarrowSiMo reaction. This result suggests that there may be another inhibitory site of copper on PSII other than water oxidizing side of PSII.

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Effect of Carbon Sources on the Synthesis of Phospholipid and Fatty Acid Composition in Chloroplast of Chlorella ellipsoidea (Chlorella ellipsoidea 엽록체의 인지질 생합성 및 지방산 조성에 미치는 탄소원의 효과)

  • 정효선
    • Journal of Plant Biology
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    • v.33 no.1
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    • pp.49-54
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    • 1990
  • Chlorella cells were cultured with M4N media treated with glucose (5 mM) sucrose (10 mM) and raffinose (30 mM). Phospholipids and their fatty acid compositions were analyzed in the chloroplast isolated from cultured Chlorella cells. Growth rate was prominently raised in the treatment with raffinose. Glucose was the most excellent carbon source in the biosynthesis of total lipid, phosphatidylcholine(PC), phosphatidylethanolamine(PE), phosphatidylinositol(PI) of the chloroplast. Also, the major fatty acids were palmitic, linoleic and linolenic acid during the biosynthesis of phospholipid in the control and in the treatment with carbon sources.

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