• Bulletin of the Korean Chemical Society
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• 제27권7호
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• pp.991-994
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• 2006

Herein, insoluble single-walled carbon nanotube (SWNT) was successfully dispersed into water in the presence of a special kind of surfactant-dicetyl phosphate (DCP), subsequently, a SWNT-DCP composite film coated glassy carbon electrode (GCE) was fabricated. The electrochemical behaviors of 6-benzylaminopurine (6-BAP) at the unmodified GCE and SWNT-DCP modified GCE were examined. It is found that the SWNT-DCP modified GCE remarkably enhances the oxidation peak current of 6-BAP, indicating great potential in the determination of trace level of 6-BAP. Finally, a sensitive and simple voltammetric method with a good linear relationship in the range of ${\times}5.0\;\;10^{-8}\sim 2.5\;{\times}\;10^{-6}$ mol/L, was developed for the determination of 6-BAP. The detection limit is as low as $2.0\;{\times}\;10^{-8}$ mol/L for 3-min accumulation. This newly-proposed method was successfully demonstrated with practical samples.

• Journal of Plant Biology
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• 제27권1호
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• pp.1-6
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• 1984

Kinetin(4.7$\times$10\ulcornerM) and 6-benzylaminopurine (2.2$\times$10\ulcornerM) were found to increase ca. 1.5-fold putrescice content in corn grown in medium containing kinetin and 6-benzylaminopurine(6-BAP) for 3days whereas kinetin was found to decrase ca. 30% spermidine and spermine, respectively. KCI (3$\times$10\ulcornerM) was found to decrease more than 50% putrescine content. After germination, ornithine decarboxylase activity was observed to increase constantly whereas arginine decarboxylase activity remained constant, suggesting involvement in putrescine biosynthesis. 6-benzylaminopurine was shown to increase more activities of arginine ornithine decarboxylase than kinetin when they were added to medium.

• Journal of Plant Biotechnology
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• 제2권1호
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• pp.21-24
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• 2000

An efficient method of shoot regeneration of peanut is described. In vitro shoot organogenesis from the callus of cotyledon explants of Arachis hypogaea L. was stimulated by addition of Adenine sulphate (Ads) along with 6 - benzylaminopurine (BAP) and - napthalene acetic acid (NAA). Ads (13 ${\mu}{\textrm}{m}$) had a stimulatory effect on shoot bud differentiation when combined with BAP (13 ${\mu}{\textrm}{m}$) and NAA (2 ${\mu}{\textrm}{m}$). Shoot organogenesis was markedly higher (92%) from callus induced on Ads, BAP and NAA combined media than from those formed by the individual supplementation of Ads or BAP with NAA. The shoots elongated on the media with GA$_3$ (1 ${\mu}{\textrm}{m}$). Elongated plantlets rooted with MS media containing IBA (9 ${\mu}{\textrm}{m}$).

• Applied Biological Chemistry
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• 제44권3호
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• pp.162-166
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• 2001

미역고사리(Polypodium vutgare L.)와 쇠무릎(Achyranthes japonica Nakai)에 있어서 광과 methyl jasmonate(MJ), 6-benzylaminopurine(BA), thidiazuron(TDZ), 2,4-dichlorophenoxyacetic acid(2,4-D)가 식물체 중의 ecdysteroids (${\beta}$-ecdysone+polypodine B) 함량에 미치는 영향을 조사하였다. 수광량을 조절하여 재배한 미역고사리의 잎과 근경 모두 상대광도가 높을수록 ecdysteroids 함량이 감소하였고 쇠무릎 유묘의 배양시 광 조건일 때가 암 조건일 때 보다 ecdysteroids함량이 낮아 식물의 ecdysteroids 함량은 광에 의해 저하되는 것으로 나타났다. 미역고사리 전엽체와 쇠무릎 유묘의 배양계에서 식물체 중의 ecdysteroids 함량은 배지 중의 MJ와 BA 그리고 TDZ의 농도가 높아짐에 따라 증가된 반면 2,4-D의 농도와는 무관하게 일정한 수준으로 유지되어,식물의 ecdysteroids 함량은 MJ와 cytokinin처리에 의해 증가되지만 auxin처리에 의해서는 영향을 받지 않는 것으로 나타났다.

• Journal of Plant Biotechnology
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• 제49권4호
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• pp.325-330
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• 2022

본 연구는 국내에서 소비되는 약용작물 중 경제적 가치는 높으나 국내 생산량이 적고 수입 의존도가 높은 Atractylodes의 식물 조직 배양 시스템을 구축하기 위해 수행되었다. 삽주는 A. ovata를 사용하였고, 4가지 cytokinins류, 6-benzylaminopurine (BA), zeatin, kinetin, thidiazuron (TDZ)을 2가지 농도(0.5, 1.0 mg/L)로 처리하였다. 4가지 유형의 cytokinin 중 BA처리는 A. ovata의 신초유도와 뿌리 생육에 효과적이었다. 0.5 mg/L 및 1.0 mg/L BA 모두 BA 처리에서 유사한 결과를 나타내었지만 1.0 mg/L BA가 신초와 뿌리 생육을 촉진하는데 더 효과적이었다. 처리 중 신초의 개수와 뿌리의 생중량(FW)을 제외하고는 TDZ 처리가 신초와 뿌리생육에 효과적이지 않아 본 수종에서는 적합하지 않았다. 본 연구에서는 A. ovata의 아배양을 이용한 기내증식 시스템을 구축하였다. 위 결과는 기내 재분화를 이용한 산림약용자원 A. ovata의 안정적인 생산 및 증식을 위한 기반 기술로 사용될 것으로 사료된다.

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2008년도 제49회 학술심포지움 및 국제학술대회
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• pp.62.2-62.2
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• 2008

• Journal of Plant Biotechnology
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• 제7권4호
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• pp.241-246
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• 2005

Factors affecting regeneration of different Rubus varieties (blackberry, raspberry and their hybrid) were examined and a reliable regeneration system was established. Media for stock plant maintenance were tested; different explants and media were investigated to find the best circumstances for the regeneration. The effect of the commonly used antibiotics was studied to determine the most suitable one for selection of the transformants. We found that both MS and LS media supplemented by $20\;gL^{-1}$ sucrose are suitable for the stock plant maintenance. The optimal hormone content for the stock plants is $0.125\;mgL^{-1}$ 6-benzylaminopurine (BAP) with $0.01\;mgL^{-1}$ indole-3- butyric acid (IBA). The highest regeneration rate was observed on medium containing MS salts with B5 vitamins complemented with glucose, sucrose, maltose, $10\;gL^{-1}$ each, supplemented with benzylaminopurine riboside (BAR) ($2\;mgL^{-1}$) and indole-3-acetic acid (IAA) ($0.1\;mgL^{-1}$). The regenerated shoots appeared directly from the cut edges, without callus phase. Hygromycin and geneticin proved to be good selection agents for the Rubus explants, but due to their severe effect on the tissues we propose to use marker-free constructions for the transformation.

• 한국환경복원기술학회지
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• 제26권6호
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• pp.155-164
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• 2023

Sedirea japonica is one of the critically endangered species in South Korea mostly due to artificial harms such as illegal collection and habitat destruction. Therefore, artificial propagation through improving germination rate, increasing growth, and controlling flowering is meaningful for the conservation and reintroduction of S. japonica. It is suggested that cytokinins are one of the multi-factors that contribute to plant growth and floral responses. Especially, exogenous cytokinins have been known to induce or promote shoot growth or earlier flowering in orchids. Therefore, it was investigated how the application of 6-benzylaminopurine (BA) influenced the growth and inflorescence of S. japonica. A foliar spray containing BA at 100, 200, 300, and 400 ppm was applied from 1st July to 30th December 2021. Leaf length, leaf length growth rate, leaf width, and width and length ratio were measured as growth-related factors. Visible inflorescence rate, inflorescence length, the number of flowers per inflorescence, and the distance between the stalks were measured as flowering-related factors. Growth-related factors except for leaf growth rate were not affected by BA treatments, while leaf growth rate was significantly increased by 200 ppm of BA treatment. The visible inflorescence rate increased by 200 ppm of BA treatment, and there seems an optimal concentration and threshold of BA treatment. An iterative experiment with more seedlings and measurement factors would be helpful to figure out the effects of exogenous BA treatment on S. japonica, and it can be applied for mass propagation.

• Journal of Plant Biology
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• 제35권2호
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• pp.135-142
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• 1992

발아시킨 물오리나무(Alnus hirsuta)의 하배축 부위를 절단하여 얻은 떡잎이 포함된 상부를 6% glucose, MS(Murashige and Skoog, 1962) 비타민 혼합체, PVP(polyvinylpyrrolidone) 및 $0-50\;\mu\textrm{M}$이 BAP(6-benzylaminopurine)를 첨가한 NT(Nagata and Takebe, 1971) 무기염배지에서 배양한 결과, $5\;\mu\textrm{M}$이 BAP가 shoot 증식에 가장 적합한 것으로 나타났다. 따라서 이 배지에서 shoot 증식을 계속하여 실험에 사용할 200여개의 shoot를 확립하였다. Shoot 증식에 미치는 무기염류와 탄소원의 영향을 조사한 결과 탄소원에 무관하게 NT 무기염이 MS 무기염에 비해 3-12배의 증식을 나타냈으나 NT 무기염배지에서 탄소원은 특별한 차이를 보여주지 않았다. 발근에 미치는 NT 무기염, sucrose, IBA의 농도에 따른 영향을 조사한 결과 1/4-1/2 농도의 NT 무기염, 3%의 sucrose, $1-8\;\mu\textrm{M}$의 IBA에서 100% 가까운 발근율을 보였으며 뿌리발달도 양호하였다. 발근된 개체를 토양에 이식하고 습도를 점진적으로 낮추면서 적응시키면 거의 100%의 생존율을 나타내었다.

• Journal of Plant Biotechnology
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• 제2권1호
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• pp.51-54
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• 2000

Leaf explants of the cucumber (Cucumis sativus L.) were cultured on Murashige and Skoog's (MS) medium supplemented with various concentrations of $\alpha$-naphthalene acetic acid (NAA) and 6-benzylaminopurine (BAP). Direct shoot orgnogenesis as well as callus formation with somatic embryos and multiple shoots was observed from leaf explants of cvs. Shinhukjinju and Chungjang. The highest frequency of shoot formation 80% was observed on MS medium supplemented with NAA/BAP (5.0 ${\mu}{\textrm}{m}$/2.5 ${\mu}{\textrm}{m}$), with explants forming 3-7 shoots. Shoots formation occured within 3 to 4 weeks. Only one subculture of calli was required for plant regeneration on normal growth regulator-free medium. Plantlets transferred to soil developed into plants of normal appearance, which flowered and set fruits.