• 제목/요약/키워드: Shoot the Moon>

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Influence of plant growth regulators on adventitious shoot formation of Glehnia littoralis Fr. Schmid (갯방풍의 기내부정아 형성에 미치는 식물생정조절물질의 영향)

  • Choo, Byung-Kil;Ji, Yun-Ui;Moon, Byeong-Cheol;Choi, Go-Ya;Lee, Hye-Won;Lee, A-Yeong;Kim, Ho-Kyoung
    • Korean Journal of Oriental Medicine
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    • 제14권1호
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    • pp.113-116
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    • 2008
  • Petiole explant of Glehnia littoralis Fr. Schmidt was in vitro cultured MS plant medium(DUCHEFA co.) supplemented with various plant growth regulators and examined to find out their optimum combination and concentration for plantlet regeneration. We investigated optimal condition for efficient plant regeneration through adventitious shoot formation on MS plant medium with various kinds of plant growth regulators. Embryogenic calli and adventitious shoot formation were greatly influenced by plant growth regulators. Embryogenic calli induction showed a good response on MS medium supplemented with NAA and BA than others. Especially, combination of 1.0 mg/L NAA and 0.5 mg/L BA on MS medium led to the greatest frequency in adventitious shoot. The results suggest that plant regulator selection be important factor to achieve an efficient regeneration.

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Generation and Selection of Promoter Trap Lines for the Investigation of Shoot Development in Arabidopsis (애기장대에 있어서 shoot 발달 연구를 위한 프로모터 trap 라인들의 제조 및 선별)

  • Lee Hwa-Mok;Park Hee-Yeon;Zulfugarov Ismayil S.;Lee Choon-Hwan;Moon Yong-Hwan
    • Journal of Life Science
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    • 제16권3호
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    • pp.540-545
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    • 2006
  • T-DNA-mediated transformation is a common method for generating transgenic plants with insertional mutagenesis. In order to identify important genes involved in shoot development, a system of promoter trap insertional mutagenesis was employed in Arabidopsis thaliana. For this system, an efficient promoter trap vector, pFGL561 was developed. The pFGL561 includes a basta-resistant gene, an intron with multiple splicing donor and acceptor sites, and a promoter-less GFP reporter gene. Using floral-dipping method, we made total 300 $T_1$ promoter-trap lines which were screened for GFP expression. GFP signals in the $T_1$ plants were detected with high frequency, 26.7%, and the signals were reconfirmed in $T_2$ plants. To isolate the genes that are involved in shoot development, phenotypes were analyzed in $T_2$ plants of the 19 $T_1$ lines that had GFP signals in shoot apex, and 6 $T_1$ lines were selected that had abnormal shoot development. These lines will be very useful for the investigation of shoot development.

Rapid Micropropagation by Axillary Buds Cultures of Smilax china

  • Song, Hyun-Jin;Sim, Seon-Jeong;Jeong, Mi-Jin;Heo, Chang-Mi;Kim, Hak-Gon;Jeong, Gwon-Yong;Heo, Su-Yeoung;Choi, Yong-Weon;Park, Geun-Hye;Yang, Jae-Kyung;Moon, Hyun-Shik;Choi, Myung-Suk
    • Journal of agriculture & life science
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    • 제44권6호
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    • pp.39-44
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    • 2010
  • An efficient method for the rapid propagation of Smilax china from axillary buds was established. Plants with thick leafage were selected from Korea native S. china population. Axillary buds of S. china collected from selected plant and were cultured in various culture media (2MS, MS, 1/2MS, WPM, B5 and SH medium). Shoot was induced from axillary bud on MS basal medium after 4 weeks of culture. 1/2MS medium showed a higher growth rate than those of the others, while the lowest shoot growth was obtained in 2MS medium. Among the sucrose concentrations, 5% sucrose was the optimum level for shoots growth from axillay buds. Among cytokinins, $0.5mgL^{-1}$ 6-benzylaminopurine (BAP) treatment showed the best performance on shoot multiplication, yielding average shoot multiplication forming about 2.4. Rooting was induced directly near the base of the shoot on 1/2MS medium containing with three-auxins ${\alpha}-napthalene$ acetic acid (NAA), indole acetic acid (IAA) and ${\beta}-indolebutyric$ acid (IBA) (0.5 and $1.0mgL^{-1}$). The $1.0mgL^{-1}$ IBA treatments induced earliest rooting with maximum of root number and root growth. These rooted plantlets were successfully transferred to pots for 4 weeks hardening process, and were transferred to soil with above 90% survival rate.

Anatomical Characteristics of Hyperhydric Shoots Occuring in In Vitro Culture of Peace Poplar (Peace포플러의 기내 배양시 발생하는 과수화 식물체의 조직적 특성)

  • Kang, Hyo-Jin;Moon, Heung-Kyu;Park, So-Young;Kim, Pan-Gi
    • Journal of Plant Biotechnology
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    • 제31권2호
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    • pp.145-149
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    • 2004
  • We investigated the anatomical aspects of vitrification in peace poplar. Comparisons were made with regard to characteristics occurring between hyperhydric and normal shoots in shoot proliferation cultures on MS medium containing 0.2 mg/L BA. Compared with normal plants, hyperhydric plants had thick, curled, and dark green leaves. Hyperhydric stems were thicker and shorter than those of normal stems. When examined under the microscopes, the mesophyll palisade cells of hyperhydric leaves were vacuolated, whereas those of normal leaves contained normal and enriched vacuole with cytoplasm. Generally, the hyperhydric leaves showed poorly developed palisade parenchyma, and revealed irregular and bigger sized intercellular structures in both palisade and spongy parenchyma as well as epidermis cells compare to those of normal leaves. In addition, the hyperhydric leaves had lower stomatal density and bigger sized cell. Vascular tissues of hyperhydic stems were less differentiated because of poorly lignified xylem tissue. The greatly expanded cortical cells and pith appeared to be the main cause of thick stems as compared with normal stems.

Effect of Light-emitting Diodes (LEDs) and Ventilation on the in vitro Shoot Growth of Eucalyptus pellita (Eucalyptus pellita의 기내(器內) 줄기생장에 미치는 LEDs (Light-emitting diodes) 및 환기처리(換氣處理) 효과)

  • Kim, Ji-Ah;Moon, Heung Kyu
    • Journal of Korean Society of Forest Science
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    • 제95권6호
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    • pp.716-722
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    • 2006
  • Various light sources including LEDs (Light emitting diodes) affecting on shoot growth was examined using in vitro shoots of E. pellita. Generally, it appeared that ventilation treatment was the most important factor affecting on normal shoot growth, irrespective of irradiation sources. Ventilation resulted in better performance of the cultures under 100% blue LED radiation. These include better shoot growth, more number of leaves, more number of internodes, more number of axillary buds, and heavier dry matters. The highest total chlorophyll content was obtained under both cool-white fluorescent lamps and R5B5 (50% red LED + 50% blue LED). The value was $24.5{\mu}g/g$ and $20.1{\mu}g/g$, respectively. In addition, ventilation resulted in higher carotenoid content in all irradiation sources except 100% red LED radiation. In conclusion, shoot growth of E. pellita could be reached maximum by ventilation under R5B5 (50% red LED + 50% blue LED).

Comparison of chrysanthemum cultivars based on direct shoot regeneration rates in tissue culture

  • Han, Bong-Hee;Lee, Su-Young;Park, Byoung-Mo
    • Journal of Plant Biotechnology
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    • 제36권3호
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    • pp.275-280
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    • 2009
  • Direct shoot regeneration from leaf or internode or petiole segments was conducted in 33 cultivars of chrysanthemum. Shoot regeneration rates varied according to cultivars, culture media, and explant types. The high shoot regeneration rate of more than 70% in 15 cultivars (‘Pink Pangpang’, ‘Orange Memory’, ‘Relance’, ‘Zinba’, ‘Beakma’, ‘Innocence’, ‘Sunny Pangpang’, ‘Euro Yellow’, ‘Dublin’, ‘Boramae’, ‘Peak’, ‘Euro White’, ‘Vesuvio White’, ‘Linneker Salmon’ and ‘Pink Pride’) and 2 ones (‘Forward’ and ‘Agason’) was obtained from the segments of leaves and internodes, respectively, cultured on MS medium containing 1.0 mg-$L^{-1}$ BAP, 0.5 mg-$L^{-1}$ IAA and 30 g-$L^{-1}$ sucrose. That in 6 cultivars (‘Shuhonochikara’, ‘Hakunosen’, ‘Whitney Pangpang’, ‘Plaisir D’Amour’, ‘Grace’ and ‘Kumsu’) was observed from the segments of leaves or internodes cultured on 1/2 MS medium 1.0 mg-$L^{-1}$ BAP, 0.5 mg-$L^{-1}$ IAA and 15 g-$L^{-1}$ sucrose In case of 3 cultivars (‘Ilweol’, ‘Puma White’ and ‘Sharon’), when internode explants excised from mother plants, which were pre-cultured on MS medium containing 2 g-$L^{-1}$ activated charcoal and 30 g-$L^{-1}$ sucrose for two months in the dark, and cultured on MS medium containing 1.0 mg-$L^{-1}$ BAP, 0.5 mg-$L^{-1}$ IAA and 30 g-$L^{-1}$ sucrose, that was shown. Seven cultivars including ‘Puma Yellow’, ‘Argus’, ‘Yes Morning’, ‘Whiparam’, ‘Hakunohikari’, ‘Charming Eye’ and ‘Moon light’ requires more improved culture conditions. Tissues with the highest shoot regeneration rate were in descending order, leaf, petiole, and internode segments.

Micropropagation of a Rare Tree Species, Empetrum nigrum var. japonicum K. Koch via Axillary Bud Culture (희귀 수종 시로미의 액아줄기 유도 미세번식)

  • Han, Mu-Seok;Park, So-Young;Moon, Heung-Kyu;Kang, Young-Jae
    • Journal of Korean Society of Forest Science
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    • 제99권4호
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    • pp.568-572
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    • 2010
  • In order to develop an efficient micropropagation system for a rare tree species, Empetrum nigrum var. japonicum K. Koch, the effect of medium salt, cytokinins and auxin at different concentration were evaluated. Shoot induction from axillary bud was better on WPM medium than on MS medium. Although there was no significant differences observed in shoot induction among the salt strengths of WPM medium, whereas healthy shoots were developed on basal WPM medium. In comparison of the cytokinins affecting shoot proliferation, zeatin was better than BA, whereas BA exhibited more effectiveness on shoot elongation. In vitro root formation was better on WPM medium than on 1/2MS medium and achieved the highest rooting rate when 5.0 mg/L IBA treatment. 93% of rooted plantlets were survived on artificial soil mixture after 4 weeks of acclimatization. Above results suggest that a rare tree species, E. nigrum var. japonicum can be micropropagated via axillary bud cultures.

A study on the usage patterns of Yun Dong-ju's poetry in the musical (- 창작가무극 <윤동주, 달을 쏘다>에 나타난 윤동주 시 활용 양상 연구)

  • Son, Mi-young
    • The Journal of the Convergence on Culture Technology
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    • 제5권3호
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    • pp.85-92
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    • 2019
  • Yun Dong - ju's poetry and his representations are used in various visual and dramatic media. According to its medium and genre characteristics, Yoon Dong - ju's representations and his poems are selected and changed. It is also the process of reading what the text is trying to convey to the public through a single person. In this study, Yoon Dong - joo's poetry was compared with other poetry of poetry. Particularly, the discussion was focused on the creative actor . If the creative drama is transmitting the feelings of Yoon Dong-ju through the city, the film conveys the poem of Yoon Dong-ju. Gamuplays are more restrictive than the movies because of their genre. As a result, the emotional expressions of the characters are more intense, the progress of the narrative is also dramatic, and the aspect of Yun Dong - ju, a poem illuminated by the movie and the drama, also differs. If the film aims to portray poet Yoon Dong-ju as a genuine literary youth, the creative poet reinterprets Yun's poetry as having a meaning of resistance.

Effect of explant's position and culture method on shoot proliferation and micro-cuttings for a rare and endangered species, Abeliophyllum distichum Nakai (희귀 및 멸종위기 식물 미선나무(Abeliophyllum distichum Nakai)의 절편위치 및 치상방법에 따른 기내증식 및 미세삽목)

  • Lee, Na Nyum;Kim, Ji-Ah;Kim, Yong-Wook;Choi, Yong Eui;Moon, Heung Kyu
    • Journal of Plant Biotechnology
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    • 제42권3호
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    • pp.228-234
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    • 2015
  • Using either the apical or axillary bud of the endangered species Abeliophyllum distichum Nakai, we tested the effect of bud position and culture method on shoot proliferation and rooting. In shoot proliferation, the axillary bud explant was more effective than the apical bud and the effect was fostered by BA treatment, whereas no differences were observed in shoot elongation by the explant position. Spontaneous rooting was observed in the MS basal medium and resulted in conspicuous differences in the explant position : more than 80% in apical bud explant and 28% in axillary bud explant was achieved, respectively. The positional effects were also observed in BA pre-treatments: generally vertical culture method appeared to be better in shoot proliferation, growth, and rooting than that of the horizontal culture method regardless of the BA pre-treatment duration. The highest shoot multiplication was achieved through the vertical culture method with axillary bud explant, whereas the best shoot elongation and rooting was obtained using the vertical culture method with the apical bud explant. Apical bud explant was superior to axillary bud explant in ex vitro micro-cuttings and revealed a significant difference in shoot growth and root development. The above results suggest that explant position and culture method influence the efficiency of micropropagation for a rare and endangered plant Abeliophyllum distichum.