Journal of Plant Biotechnology

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Establishment of proliferation and regeneration system of PLBs in Phalaenopsis by treatments of a variety of types of medium, sucrose concentrations and anti-browning agents

다양한 배지종류, sucrose 농도 및 갈변억제물질 처리에 의한 팔레놉시스 PLB 증식 및 재분화 체계확립

  • Roh, Hee Sun (Department of Biotechnology, College of Biomedical & Health Sciences, Glocal Campus. Konkun university) ;
  • Kim, Jong Bo (Department of Biotechnology, College of Biomedical & Health Sciences, Glocal Campus. Konkun university)
  • 노희선 (건국대학교 의료생명대학 생명공학과) ;
  • 김종보 (건국대학교 의료생명대학 생명공학과)
  • Received : 2014.11.14
  • Accepted : 2014.11.18
  • Published : 2014.12.31
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Abstract

To establish an efficient proliferation and regeneration of PLBs (protocorm-like bodies) of Phalaenopsis plants, a variety of propagation medium types, various concentraions of sucrose as well as liquid and solid type were tested in this study. Further, activated charcoal, citric acid and ascorbic acid were compared whether these agents are suppose to reduce the browning in culture process using PLBs of Phalanopsis plants. With regard to the proper propagation medium, VW medium showed 1.3 ~ 2 times highr than those of other medium in an index of increasing for fresh weight and 50% higher than those of other medium in the frequency of shoot regeneration. However, regarding liquid and solid types of culture, there were no significant differences in the proliferation of PLBs and regeneration of shoots from PLBs. In the experiment for a variety of sucrose concentrations (0 ~ 50 g/l), 10 g of sucrose showed 30 ~ 50% higher than other concentrations in increasing index and 10 ~ 50% higher in the regeneration of shoots from PLBs. Regarding the reduction of browning in tissue culture via PLBs of Phalaenopsis plants, 1 g of activated charcoal showed only 1.5% browning of PLBs cultured. Whereas, other treatments including citric acid and ascorbic acid showed 6 ~ 16% of browning of PLBs. Therefore, activated charcoal was selected as an efficient anti-browning agents for the culture of PLBs in Phalaenopsis plants. Using above-described results can be contibuted to the establishment of mass propagation system using PLBs of Phalaenopsis plants in the future.

팔레놉시스 PLB (protocorm-like bodies) 조직을 이용하여 대량증식 및 신초재분화 체계 확립을 위하여 다양한 증식배지, 액체배지와 고체배지의 효과, sucrose 농도 등이 PLB 증식과 신초 재분화에 효과가 있는지 그리고 활성탄소, citric acid 및 ascorbic acid 등이 팔레놉시스 PLB 배양시 갈변화 현상을 감소하는데 효과가 있는지 알아 보고자 본 연구를 수행하였다. 그 결과, 난과 식물에서 증식배지로 널리 사용되는 VW, HCa, Orchimax 및 Kudson C 배지 중 VW 배지가 PLB 증식에서 타 배지와 비교해서 최소 1.3배에서 최대 2배의 증식효율 그리고 신초 재분화에서도 50% 이상 높은 효율을 보여 주었다. 최적 배지로 선정된 VW배지에 apple powder 및 banana powder를 첨가한 VWAB 배지를 기반으로 액체 및 고체배양에서 PLB 증식효율과 신초재분화율을 비교한 결과, 통계적으로 유의한 차이는 발견되지 않았다. Sucrose 농도를 0 ~ 50 g 처리한 실험에서는 PLB 증식과 재분화 효율 둘 다 10 g 처리구에서 가장 좋은 결과를 보여 주었다. 마지막으로 팔레놉시스 PLB 증식 및 재분화 과정에서 자주 발생하는 갈변화를 감소시키기 위하여 활성탄소, citric acid와 ascorbic acid를 처리한 실험에서는 활성탄소 1 g이 1.5%의 가장 낮은 갈변율을 나타내었다. 이러한 실험결과는 향후 팔레놉시스 PLB를 이용한 대량증식 및 재분화 체계 확립에 크게 기여하리라 판단된다.

Keywords

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