Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Use of the Temporary Immersion Bioreactor System for Mass Production of Eucalyptus pellita Plus Tree

간헐적 침지 방식의 생물반응기 시스템을 이용한 유칼리 선발목 클론 대량증식

  • Kim, Seon-Ja (Gwacheon National Science Musium) ;
  • Park, So-Young (Forest Biotechnology Division, Korea Forest Research Institute) ;
  • Moon, Heung-Kyu (Forest Biotechnology Division, Korea Forest Research Institute) ;
  • Lee, Wi-Young (Forest Biotechnology Division, Korea Forest Research Institute)
  • 김선자 (국립과천과학관) ;
  • 박소영 (국립산림과학원 산림생명공학과) ;
  • 문흥규 (국립산림과학원 산림생명공학과) ;
  • 이위영 (국립산림과학원 산림생명공학과)
  • Received : 2010.01.25
  • Accepted : 2010.03.23
  • Published : 2010.03.31
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Abstract

The application of bioreactor culture techniques for plant micropropagation is regarded as one of the ways to reduce production cost by scaling-up and automation. In an attempt to optimize mass proliferation systems in Eucalyptus pellita, four types of bioreator systems including temporary immersion system with or without net were tested. Highest growth was achieved with 30-min flushes of medium at every 4-h intervals in TIN (temporary immersion with net) system. Results indicate over three-fold increase in shoot growth with the TIN system when compared with TIX (control: temporary immersion without net) system which is without net in bioreactor. Furthermore, plants produced from the TIN system increased total chlorophyll content, chlorophyll a/b and dry matter, giving higher yields of acclimatized plants. Our findings suggest that plantlet growth increases with appropriate exposure to media at correct intervals, as well as use of net for maintaining aerobic condition in the vessels. The TIN system thus has great potential for in vitro mass production of Eucalyptus clones commercially.

식물대량증식에서 생물반응기의 이용은 규모를 대량화하고 자동화 할수 있다는 점에서 생산비를 절감할 수 있는 방법 중 하나이다. 본 연구에서는 유칼리 펠리타 선발목의 대량증식 체계를 확립하기 위해 4가지의 생물반응기 배양시스템에서 유칼리의 생장을 비교하였다. 배양기내에 지지물(net)을 설치하고 매 4시간마다 30분씩 액체배지를 공급한 TIN 배양(Temporary immersion with net)에서 식물체 생장이 가장 좋았다. TIN 시스템하에서 자란 식물체는 동일한 방식에 net가 없는 TIX 배양(Temporary immersion without net)에서 자란 식물체와 비교하여 초장이 3배 이상 증가하였다. 게다가 TIN 시스템에서 생산 된 식물체는 총 엽록소 함량, 엽록소 a/b, 그리고 건물중 등도 증가하였다. 위와 같은 결과는 기내 유칼리나무 생장에 중요한 요인이 식물체가 적당한 간격으로, 그리고 적당한 시간동안 배지에 노출되어야하고, net의 이용이 필수적임을 보여준다. TIN 시스템은 유칼리 클론묘의 대량생산을 위해 최적의 시스템으로 산업화를 위한 유칼리나무 대량생산시 유용하게 이용될 수 있을 것으로 생각된다.

Keywords

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