Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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The Effect of Light on the Formation of Chlorophyll-Protein Complexes in Oat Seedlings during Greening

녹화중 귀리 유식물의 엽록소-단백질 복합체 형성에 미치는 광선의 효과

  • 이동희 (부산대학교 자연과학대학 생물학과) ;
  • 문연희 (부산대학교 자연과학대학 생물학과)
  • Published : 1996.10.01
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Abstract

Various light intensity and light quality were treated to oat seedlings to investigate the effect of light on the chlorophyll accumulation and the formation of chlorophyll-protein complexes. The Increase of total chlorophyll accumulation and Chl (chlorophyll) a/b ratio was promoted under H (high intensity) white light during oat chloroplast development when compared to 1 (low intensity) white light. Also H white light was more effective in the formation of chlorophyll-protein complexes associated with PSI CCI and CCII than L white light. The seedlings grown in various right quality caused little changes in total chiorophyl and ChI-a/b ratio when compared to those grown in L white light. The assembly of LHCII trimer was more affected by L white light treatment in the formation of-chlorophyll-protein complexes than red light treatment. The effect of blue light on the relative composition of chlorophyll-protein complexes was similar to that of L white light. Particualrly, blue light was more effective in the synthesis of LHCII monomer than the other light quality at the early stage of greening. When compared to red light, blue light was more effective the increase of chlorophyll accumulation and Chl a/b ratio than 1ight Quality, and light Quality may be in important factor for the regulation of the organization in the chlorophyll-protein complexes curing greening.

백색광 및 여러 파장의 광선 (적색, 청색, 그리고 녹색광)이 녹화중인 귀리 유식물의 엽록소 함량 변화 및 엽록소-단백질 복합체 형성에 미치는 효과를 조사하였다. 높은 광도의 백색광은 낮은 광도의 백색광에 비하여 귀리 유식물의 전체 엽록소 함량 및 엽록소 a/b 비율의 증가에 효과적이었다. 또한 엽록소-단백질 복합체의 형성에 있어서 높은 광도의 백색광은 낮은 광도의 백색광에 비하여 PSI, CCI, 및 CCII의 형성을 효과적으로 촉진하였다. 한편, 여러 파장의 광선하에서 생장한 귀리 유식물은 유사한 광도를 가진 백색 광하에서 생장한 유식물에 비하여 엽록소의 축적 및 엽록소 a/b 비율에 큰 영향을 받지 않았다. 적색광은 귀리 유식물의 엽록소-단백질 복합체의 형성에 있어서 백색광에 비하여 LHCII trimer형성에 효과적이지 못하였으나, 청색광은 백색광과 유사한 효과를 나타내었다. 청색광과 적색광을 비교하였을 때, 청색광은 적색광보다 LHCII monomer의 형성에 효과적이었다. 이와 같은 결과에서 엽록체의 발달과정동안 광도의 효과가 광질의 효과보다 엽록소 축적 및 엽록소 a/b비율의 증가에 중요한 인자로 작용하며, 여러 파장의 광선은 엽록체-단백질 복합체의 조성을 조절하는데 중요한 인자인 것으로 사료된다.

Keywords

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