• 제목/요약/키워드: lily bulblet formation

검색결과 8건 처리시간 0.018초

Cloning of Superoxide Dismutase (SOD) Gene of Lily 'Marcopolo' and Expression in Transgenic Potatoes

  • Park, Ji-Young;Kim, Hyun-Soon;Youm, Jung-Won;Kim, Mi-Sun;Kim, Ki-Sun;Joung, Hyouk;Jeon, Jae-Heung
    • Journal of Applied Biological Chemistry
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    • 제49권1호
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    • pp.1-7
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    • 2006
  • Differential display reverse transcription PCR (DDRT-PCR) analysis was performed on lily 'Marcopolo' bulb scale for isolation of expressed genes during bulblet formation. Cu/Zn lily-superoxide dismutase (LSOD) of 872 bp gene, with ability to scavenge reactive oxygen in stress environment, was isolated. Northern blot analysis showed expression levels of LSOD maximized 12 days after bulblet formation. Ti plasmid vectors were constructed with sense and antisense expressions of LSOD gene and transformed into potato. Southern blot analysis of transgenic potatoes revealed different copies of T-DNA were incorporated into potato genome. In transgenic potatoes, lily SOD gene was overexpressed in sense lines and not in antisense lines. In native polyacrylamide gel electrophoresis analysis, additional engineered LSOD was detected in sense overexpressed transgenic line only. Transgenic potatoes were subjected to oxidative stress, such as herbicide methyl viologen (MV). Transgenic potato lines with sense orientation exhibited increased tolerance to MV, whereas in antisense lines exhibited decreased tolerance. In vitro tuberization of transgenic potato with sense orientation was promoted, but was inhibited in transgenic potato with antisense orientation.

오리엔탈 백합의 인편 및 줄기의 박판 세포층 절편으로부터 고빈도 자구형성 (High Frequency Bulblet Formation in Scale and Stem Thin Cell Layer Explant Cultures of Lilium Oriental Hybrids)

  • 오승철;정명희;김석원;유장렬
    • Journal of Plant Biotechnology
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    • 제30권3호
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    • pp.251-255
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    • 2003
  • An efficient system for in vitro bulblet formation of Lilium oriental hybrids(cvs). Casa Blanca and Siberia is described. Transverse thin cell layer(tTCL)(1mm thick) explants of 'Casa Blanca' formed bulblets at a frequency of 97.7% when cultured on Murashige and Skoog (MS) medium supplemented with 1mg/L 2,4 dichlorophenoxyacetic acid(2,4-D) (On average 15.6 bulblets were formed per explant). The frequency of bulblet formation was drastically reduced when the explant ghickness was thinner than 1 mm. Explants from the outermost layer of bulb scale produced greater frequency of bulblet formation than middle or innermost layer. Among auxins supplemented to culture medium at 1 mg/L, 2,4-D led to greater frequency of bulblet formation on explants than dicamba, picamba, or phenylacetic acid(PAA). tTCL explants from the middle region of the outermost layer bulb scale yielded greater frequency of bulblet formation than the upper or lower region. tTCL stem explants of 'Siberia' formed bulblets at a frequency of 95.3% when cultured on MS medium with 1 mg/L 2,4-D(On average 9.1 bulblets were formed per explant). The system estabilished in this study will be useful for in vitro rapid propagation and genetic transformation of Lilium Oriental hybrids.

MS 배지 내 무기물 농도 및 질소 농도가 나리의 자구 형성과 비대에 미치는 영향 (Effect of MS Medium Strength and Nitrogen Concentration on Bulblet Formation and Growth of Lilium In Vitro)

  • 염미란;박현춘;양찬석;백기엽
    • 식물조직배양학회지
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    • 제28권6호
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    • pp.341-346
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    • 2001
  • 본 실험에서 Lilium oriental hybrid 'Casa Blanca'. asiatic hybrid 'Mona'와 longiflorum hybrid 'Hinomoto'의 기내 인편으로부터의 자구 형성 및 비대를 위해 MS 배지 내 무기물 농도를 0.5∼2배로, 배지 내 총 질소 농도를 30∼120 mM로 달리하여 자구 형성과 생장을 조사한 결과 인편으로부터의 자구 형성수는 0.5와 1배의 MS 배지 무기물 농도 또는 30 mM의 총 질소 농도에서 'Mona' 품종이 다른 품종에 비해 가장 많았다. 'Casa Blanca'와 'Hinomoto'에서는 0.5배 MS 무기물 농도 또는 30 mM의 질소 농도가 자구 형성에 가장 효과적이었다. 자구 비대는 2배 MS 무기물 농도 또는 120 mM 총질소 농도에서 3품종 모두 양호하였다.

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땅나리 기내 인편 배양시 광환경과 배양 절편체의 조건이 증식 효율성에 미치는 영향 (Effect of Light and Scale Explant Conditions on Propagation Efficiency in Lilium callosum Scale Culture)

  • 박지영;유용권;정정학;김기선
    • 원예과학기술지
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    • 제16권3호
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    • pp.358-360
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    • 1998
  • 본 실험은 자생나리인 땅나리의 기내 대량생산 체계를 확립하기 위한 기초 연구로서 배양환경중 광환경 및 배양 절편체의 분화 능력 조건을 유도하여 자구의 생장을 촉진시킬 수 있는 방법을 모색하기 위하여 실시하였다. 광조건은 24시간 지속적인 일장처리와 2,500~5,000 Lux 정도의 광도가 자구의 발달에 효과적이었다. 계대배양시 번무한 지상부를 자구의 연접부위까지 완전히 절단해 줌으로써 전반적인 식물체 생육을 촉진시킬 수 있었고, 절편체의 크기가 클수록 자구수가 많았으나, 자구의 비대는 모인편의 크기가 작은 처리구에서 약간 우수하였다. 광을 많이 필요로 하는 땅나리는 기내 인편 배양시 치상방법을 배지면 위에 노출시켜 치상하는 것이 자구생산면에 있어서 효율적이었다.

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나리 생장, 자구 발달 및 화분과 종자발아에 미치는 방사선의 영향 (Effect of Irradiation on Growth, Bulblet Formation, and Germination of Pollen and Seed of Several Lily Cultivars)

  • 박인숙;서동희;황윤정;정재동;강시용;임기병
    • 화훼연구
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    • 제16권3호
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    • pp.211-217
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    • 2008
  • 나리 돌연변이 육종을 위한 기초자료로서 구근, 종자, 화분의 방사선 감수성을 구명하고자 하였다. 'New Wave'외 6품종의 구근은 감마선에 매우 민감하였다. 무조사구는 개화하였으나 조사구에서는 생육이 크게 지연되었으며 화서는 전혀 형성되지 않았다. 'New Wave'와 'Tiny Dino'는 125Gy 조사구에서 생존은 하였으나 생육은 저조하였다. 'New Wave'와 'Tiny Dino'를 제외한 다른 품종들은 잎의 일부 또는 전부가 고사하였다. 품종별 인편의 수분함량은 72~78%이었다. 인편으로부터 자구 형성은 무조사구에서 100%, 조사된 구에서는 'Siberia' 50Gy 처리구에서만 8.5% 일어났다. 화분의 발아율은 감마선 조사에 의해 일정한 경향을 나타내지 않았다. $F_1$ 'Augusta' 종자는 선량이 높아질수록 생존율은 급격히 떨어졌다. 자구는 무조사구에서만 형성되었으며 $LD_{50}$는 100Gy 미만이었다. 방사선 조사된 기내 $F_1$ 'Augusta'의 자구는 배양방법에 관계없이 구고와 구폭이 선량 증가와 함께 감소하였다. 신초 형성은 무조사구에서 100% 되었으나 다른 처리구에서는 15~16%로 떨어졌다.

광조사 방향 및 광도에 따른 배양식물체의 생장특성 (Growth Characteristics of Tissue Cultured Plantlets by Lighting Direction and tight Intensity)

  • 함인기;김현숙;이미애;조만현;이은모
    • 한국자원식물학회지
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    • 제12권2호
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    • pp.139-144
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    • 1999
  • 광조사 방향 및 광도에 따른 몇 가지 배양식물체의 생장반응을 조사하였다. 광조사 방향은 배양실내 조명장치를 상방향 또는 측방에 설치하여 조사하였다. 딸기 배양식물체의 초장과 근장은 광조사 방향에 관계없이 차이가 없었으나, 엽면적, 생체중 및 건물중은 광도가 높을 수록 증가하였다. 감자 절간 배양에서도 광도가 높은 측방광 조사구에서 초장이나 근장은 감소하였으나, 줄기 및 뿌리는 굵기가 굵고 생체중과 건물중 그리고 엽면적도 증가하였다. 백합인편배양 역시 측방광 고광도 조사구에서 자구 형성이 많았고 생체중과 건물중 모두 증가하였다. 따라서 관행 하방광 조사보다 배양용기의 측면에서 광을 조사하여 광도를 높이고, 배양용기를 3단으로 적재할 수 있는 측방광 조사방법이 배양식물체의 생장을 촉진시켜 양질 배양묘 생산효율을 증대시켰다.

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Efficient Plantlet Regeneration via Callus Formation from Leaf Segment of Lilium Oriental Hybrid 'Casa Blanca'

  • Kim Mi-Sun;Jeon Jae-Heung;Youm Jung-Won;Kim Jae-Hyun;Lee Byung-Chan;Kang Won-Jin;Kim Hyun-Soon;Joung Hyouk
    • Journal of Plant Biotechnology
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    • 제7권2호
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    • pp.129-134
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    • 2005
  • Callus induction from a leaf explant has been achieved in Lilium Oriental hybrid 'Casa Blanca'. The highest frequency of callus induction was obtained on MS medium supplemented with 0.5 mg/L BA and 2.0 mg/L NAA after 2 months of culture. The cultures maintained continuously without change in color and type of callus when they cultured in the dark. Plantlet regeneration with a high frequency was achieved from induced calli on the same medium. A number of shoots are formed from one cluster of callus, and bulblets developed into intact plantlets after transfer to hormone-free MS medium. No phenotypic variations were observed among regenerants. Enhancement in plantlet regeneration via callus formation would be expected to facilitate the efficiency of transformation of this Oriental hybrid 'Casa Blanca'.

Large-scale Culture of Plant Cell and Tissue by Bioreactor System

  • Son, Sung-Ho;Park, Sung-Mee;Park, Seung -Yun;Kwon, Oh-Woung;Lee, Yun-Hee;Paek, Kee-Yoeup
    • Journal of Plant Biotechnology
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    • 제1권1호
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    • pp.1-7
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    • 1999
  • Large-scale cultures of plant cell, tissue, and organ have been achieved by using BTBB. When different sized BTBBs (5 L, 20 L, 100 L, 300 L, and 500 L) were tested for the culture of yew cells (Taxus cuspidata Sieb. et Zucc.), cell growth increment reached to 94.5% in SCV after 24 days of culture with 30% of inoculation cell density. However, there were some variations in the production of taxol and its derivatives among the BTBBs of different size. Approximate 4 ㎎/l of taxol and 84 ㎎/l of total taxanes were obtained by using a 500L BTBB after 6 weeks of culture. With a 20L BTBB, about 20,000 cuttings of virus-free potatoes (cv. Dejima) could be obtained by inoculating 128 explants and maintaining 8 weeks under 16 hr light illumination. The frequency of ex vitro rooting of the cuttings revealed as more than 99% under 30% shade. By incorporating two-stage culture process consisting of multiple bulblet formation in solid medium and bulblet development in liquid medium, mass propagation of lily through bioreactor seemed to be possible. In the case of 'Marcopolo', the growth of mini-bulblets in BTBB was nearly 10 folds faster than that of the solid medium. Time course study revealed that maximum MAR yield of ginseng (Panax ginseng C. A. Meyer) in a 5 L and 20 L BTBB after 8 weeks of culture was 500 g and 2.2 ㎏, respectively. By cutting the MAR once and/or twice during the culture, the yield of root biomass could be increased more than 50% in fresh weight at the time of harvest. With initial inoculum of 500 g of sliced MAR in a 500 L BTBB, 74.8 ㎏ of adventitious root mass was obtained after 8 weeks of culture. The average content of total ginseng saponin obtained from small-scale and/or pilotscale BTBBs was approximately 1% per gram dry weight. Based on our results, we suggest that large-scale cultures of plant cell, tissue, and organ using BTBB system should be quite a feasible approach when compared with conventional method of tissue culture.

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