• 제목/요약/키워드: protocorm like body (PLB)

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Optimization of efficient protocorm-like body (PLB) formation of Phalaenopsis and Dendrobium hybrids

  • Soe, Khaing Wah;Myint, Khin Thida;Naing, Aung Htay;Kim, Chang Kil
    • Current Research on Agriculture and Life Sciences
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    • 제32권4호
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    • pp.179-183
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    • 2014
  • Optimization of the protocorm-like body (PLB) formation of Phalaenopsis and Dendrobium hybrids was performed by determining the effects of plant growth regulators (PGRs) and different parts and division sizes of the PLB. For both genera, the base part was the best for the proliferation of PLBs, yielding the highest number of PLBs on a PGR-free medium for Phalaenopsis and medium containing $0.1{\mu}M$ NAA and $10.0{\mu}M$ BAP for Dendrobium. As regards the division size, four-division sections resulted in a higher PLB formation efficiency for Phalaenopsis, while two-division sections produced a higher PLB formation efficiency for Dendrobium. It is expected that these findings will be applicable to efficient PLB formation of other Phalaenopsis and Dendrobium orchids.

멸종위기 수종 석곡(Dendrobium moniliforme)의 Protocorm-like Body 형성 및 기내증식 (In vitro Propagation and Protocorm-like Body Formation of Endangered Species, Dendrobium moniliforme)

  • 배기화;김남영;송재모;송관필
    • Journal of Forest and Environmental Science
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    • 제30권1호
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    • pp.126-132
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    • 2014
  • This experiment was conducted to establish the in vitro propagation of Dendrobium moniliforme through protocorm like body (PLB) induction from the culture of leaf, stem and root explants. Frequency of PLB formation from root explants was higher than those of leaf and stem explants. PLB's proliferation in MS medium including 1.0 mg/L NAA was better than 1.0 mg/L IBA. Frequency of PLB's proliferation on medium with various concentrations of BA, Kinetin, Tidiazuron (0. 1.0, 3.0 mg/L) and NAA (0, 1.0 mg/L) was tested. The maximun proliferation of PLB's was obtained on MS medium supplemented with 3.0 mg/L BA and 1.0 mg/L NAA after 6 weeks of culture. Addition of 200 mg/L activated charcoal (AC) and 30 g/L sucrose was effective on PLB proliferation for D. moniliforme.

Doritaenopsis 뿌리배양으로부터 고빈도의 Protocorm-like Body(PLB)형성 (High Frequency Protocorm-like Body(PLB) Formation through Root Cultures Doritaenopsis Hybrids(Orchidaceae))

  • 박소영;오성래;백기엽
    • Journal of Plant Biotechnology
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    • 제30권3호
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    • pp.241-244
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    • 2003
  • Root cluster section culture, showing high efficient Protocorm-like body (PLB) formation capacity, were established in Doritaenopsis hybrids. Three types of root were obtained from excised shoots in 1/2MS medium containing different concentrations of NAA; \circled1normal roots, \circled2multiple roots and \circled3abnormal root clusters. Those were placed on 1/2MS medium supplemented with 0.5 mg/L thidiazuron for PLB regeneration. PLB regeneration rate was greater in root cluster section cultures (77.8%) compare to normal root tip cultures(30%). Number of PLBs regenerated from root cluster sections were counted over 11 per explant (5.3 per normal root tip).High frequency of PLB regeneration was achieved in root cluster section culture. This result can be used as an efficient method for clonal proliferation of Doritaenopsis hybrids.

Protocorm-like body를 이용한 호접란 형질전환 연구 (Agrobacterium-Mediated Transformation of Phalaenopsis by Using Protocorm-Like Body)

  • 허연재;김은영;양원태;이영병;이재헌;정영수;남재성;윤대진;이기환;김도훈
    • 생명과학회지
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    • 제19권3호
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    • pp.378-383
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    • 2009
  • 본 연구는 Agrobacterium을 이용한 효율적인 호접란 형질 전환 시스템의 확립을 위해 실시하였고, 호접란 PLB의 대량증식을 위한 배지 조성은 하이포넥스 기본 배지에 활성탄 1g/l, 티아민 0.1 mg/l 및 sucrose 30 g/l을 배지에 첨가한 경우 PLB가 안정적으로 증식되었다. 계대 배양시 PLB 절단 방법이 PLB의 생존과 증식에 큰 영향을 미치며, PLB 위쪽으로 부터 1/3 부위를 절단하여 계대 배양한 경우 90% 이상의 가장 높은 증식률을 나타났다. Agrobacterium 접종 시 균이 묻어 있는 침으로 PLB를 찔러 상처를 내는 dipping 방법을 이용하여 형질전환 효율을 높일 수 있었다. Agrobacterium 배양액의 흡광도 값이 0.8일 때 형질전환 효율이 가장 높았고, 형질전환된 PLB의 선발은 1 mg/l 정도의 저농도 hygromycin을 함유한 배지에 계대배양 하는 것이 효율적이었다. 호접란 형질전환체를 먼저 GUS assay를 통하여 선발하였고, 선발된 개체로부터 genomic DNA를 추출하여 GUS 특이적 primer와 probe로 PCR과 Southern blot 분석을 수행하고 유전자의 도입여부를 조사한 결과 GUS 염색된 형질전환체에서 정상적으로 GUS 유전자가 도입된 것을 확인할 수 있었다.

Clonal Propagation through Leaf Sheath Culture of Phalaenopsis

  • Jo, Man-Hyun;Ham, In-Ki;Lee, Mi-Ae;Han, Gyu-Heung;Woo, In-Shik
    • Plant Resources
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    • 제5권3호
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    • pp.176-180
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    • 2002
  • This study was conducted to develop the clonal propagation technique through in vitro culture using by leaf sheath explants of Phalaenopsis grown in vitro. The highest frequency of protocorm-like body (PLB) formation was obtained when explants of leaf sheath were cultured on VW medium containing 30g/L sucrose, 500 mg/L activated charcoal, 150 mVL coconut water, 1 mg/L NAA, 1 mg/L 2ip and 2.5 g/L gelrite. The PLB formation rate of VW medium was highest followed by modified Hyponex medium, and lowest in MS medium. Plantlets induced from PLBs transferred to plastic pots including spagnum moss were well developed.

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Effect of Plant Growth Regulators on Clonal Production through Basal Stem Explant Cultures of a Phalaenopsis Hybrid

  • Jo, Man-Hyun;Ham, In-ki;Park, Sang-kyu;Seo, Gwan-Seok;Han, Gyu-Heung;Woo, In-Shik
    • Plant Resources
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    • 제6권2호
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    • pp.89-93
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    • 2003
  • This study was conducted to develop the clonal propagation technique through in vitro culture using basal stem explants in Phalaenopsis hybrid grown in vitro. The highest frequency of protocorm-like body (PLB) formation was obtained when basal stem explants were cultured on VW medium containing 30g/L sucrose, 500 mg/L activated charcoal, 150 ml/L coconut water, 1 mg/L NAA, 5 mg/L 2iP and 2.5g/L gel rite. PLBs transferred to Hyponex medium were regenerated to plantlets. Plantlets transferred to plastic pots containing spagnum moss were developed and successfully acclimatized under greenhouse. The flower was bloomingly opened in plants regenerated from basal stem explants. The flower was not different from both mother plant and plant induced through clonal propagation of Phalaenopsis hybrid.

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호접란 줄기기저부 절편배양을 통한 조직배양묘의 연속생산 (Continuous Production of Phalaenopsis Clones by Basal Shoot Culture)

  • 빈철구
    • Journal of Plant Biotechnology
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    • 제30권4호
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    • pp.375-380
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    • 2003
  • 줄기기저부절편조직을 이용한 호접란 조직배양묘 생산 체계를 확립하기 위하여 원괴체 유도와 원괴체 증식의 조건을 구명하고자 하였다. 치상조직별 원괴체 유도 성공률을 비교한 결과 줄기기저부절편조직에서 약 45%의 높은 성공률을 나타내었고 다음은 화경액아 배양으로 약 30% 정도의 성공률을 나타낸 반면 근단, 화경절간절편, 화경엽, 성숙엽의 경우에는 성공률이 1% 미만으로 매우 낮았다. 품종별 원괴체의 유도능력에서의 차이를 알아보기 위하여 11개 품종에서 줄기기저부 절편배양을 한 결과 백색계 와 핑크계품종 모두에서 30%이상의 높은 원괴체 성공률을 나타내었다. 줄기기저부배양에서 줄기기저부를 절단하지 않고 천체조직을 치상하였을 경우 거대 원괴체가 유도되었는데 이 거대 원괴체는 진한 녹색으로 보통 원괴체의 3∼5배 정도 이상 큰 것으로 나타났다. 이 거대 원괴체를 증식하기 위해 절단하여 증식배지에 치상하였으나 새로 나온 원괴체는 정상적인 크기의 PLB로 유도되었다. 줄기저부배양에서 얻어낸 원괴체들은 증식과정을 거쳐 정상적인 조직배양묘를 형성하였다 그러므로 이 방법은 호접란 클론묘생산에 쓰일 수 있는 효율적이고 실용적인 방법의 하나라고 판단되었다. 그리고 줄기기저부 절편배양을 이용하여 원괴체를 유도 증식하고 플라스크묘를 만든 뒤 다시 그 묘의 줄기기저부절편을 이용하여 원괴체를 유도 증식하고 플라스크묘를 만들어내는 시스템에 응용함으로써 무한수의 조직배양묘를 연속적으로 생산할 수 있다는 체계가 제시되었다.

Shoot regeneration from internode sections of Ardisia pusilla DC.

  • Lee, Su-Young;Kim, Young-Soon;Han, Bong-Hee
    • Journal of Plant Biotechnology
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    • 제35권3호
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    • pp.209-213
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    • 2008
  • This study was conducted to regenerate shoots from internode sections(about 1mm in thickness) of Ardicia pusilla de Candolle. Internode sections were cultured on MS medium supplemented with TDZ or both TDZ and IBA. At one month after culture, primodium, which looks like protocorm like body(PLB) of orchid, appeared around swollen internodes. And then it grew and changed into the shape similar to granule of orange at two or three months after culture. At four to five months after culture, explants covered with them became a cluster, and then multiple shoots were regenerated from them. Primodia formation was the best when internode was cultured on MS medium supplemented with 0.25 $mg{\cdot}L^{-1}$ thidiazuron(TDZ) and 0.5 $mg{\cdot}L^{-1}$ indole-3-butyric acid(IBA). That internodes were cultured on MS medium supplemented with either higher concentration of TDZ than that of IBA, or equal concentration of TDZ and IBA, or TDZ only was little effective for primodia formation.

수분 후 경과일수 및 배지가 심비디움 교배조합의 무균발아에 미치는 영향 (Effects of Days after Pollination and Media on Asymbiotic Germination in Cross Combination of Cymbidium spp.)

  • 김미선;이영란;원제양;김재영;김병현;은종선
    • 원예과학기술지
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    • 제16권2호
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    • pp.236-238
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    • 1998
  • 심비디움의 교배에 의한 신품종 육성시 발아율을 증진시키고 발아기간을 단축시켜 육종 효율을 높이고자 자가 또는 타가수분 후 경과일수에 따라 무균발아에 가장 적합한 수분 후 일수 및 배지에 대해 조사한 결과는 다음과 같다. 자방의 길이 생장은 교배조합에 관계없이 수분후 110일경, 자방의 폭은 교배조합에 따라 다소차이가 있으나 대체로 140일경에 생육이 정지되었다. 자방의 수가 많고 교배된 꼬투리의 교배율이 높은 조합일수록 발아상태가 양호하였다. 수분후 150일 부터 180일 경과된 꼬투리를 배양하는 것이 발아 상태가 가장 양호하였고 발아 소요일수도 짧았다. 무균파종 및 발아 후 생육에 적합한 배지는 하이포넥스 배지로 나타났다.

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