• 한국약용작물학회:학술대회논문집
• /
• 한국약용작물학회 2007년도 추계학술발표회
• /
• pp.317.2-317.2
• /
• 2007

• 한국약용작물학회:학술대회논문집
• /
• 한국약용작물학회 2009년도 심포지엄 및 춘계학술발표회
• /
• pp.257-258
• /
• 2009

• 한국약용작물학회지
• /
• 제7권4호
• /
• pp.251-256
• /
• 1999

시호 모상근 태양에선 MS와 RCM 배지를 기본배지로 하는 몇 가지 배지를 사용하여 생장과 사이코사포닌 함량을 비교하였으며, 그 중 MS와 3RCM 두 배지에서 보이는 생장과 성분 함량의 차이가 뿌리의 조직학적 차이와 연관이 있는지를 조사하였다. 모상근의 생장은 생중량은 MS배지가 건중량은 3RCM 배지가 각각 양호하였으며, MS와 3RCM의 건중량에 대한 생중량의 비가 각각 7.6%와 14%로 MS 배지가 함수량이 높았다. 사이코사포닌 함량은 MS배지에서는 극히 낮은 함량을 나타내었으나, 3RCM 배지에서는 총함량에서 국내 1년산 재배근의 약 $2.2{\sim}5.5$배의 함량을 나타내었다. 한편, 두 배지에서 배양한 시료의 근단부와 뿌리끝 1 cm 부근에서는 조직학적인 큰 차이를 관찰할 수 없었으나, 성숙대에서 는 MS 배지 보다 3RCM 배지에서 목부 사부 세포들의 발달이 보다 뚜렷하고, 3RCM 에서는 많은 세포에서 탄닌을 함유하는 것으로 추정되는 진한 염색의 액포 또는 세포 소기관이 관찰되었다. 따라서 이러한 세포 소기관의 발달은 사이코사포닌을 포함한 2차대사물질의 생합성과 연관이 았는 것으로 사료된다.

• KSBB Journal
• /
• 제4권2호
• /
• pp.94-98
• /
• 1989

당근 진탕배양세포로부터 분리한 원형질체에 A.rhi-zogenes를 처리하여 bacteriad의 부착과 부착과정에 영향을 주는 여러 요인들을 조사하였다. 또한 당근뿌리 절편에 strain이 다른 bacteria와 heat-inactivated bacteria를 전처리한 후 A.rhizogenes strain A4를 접종하여 식물세포 표면에 있어서 bacterial specific receptor sites존재 유무를 살펴보았다. Bacteria의 부착은 pH 6.0, 24-35$^{\circ}C$ 조건하에서 120분동안 원형질체막에 유의적인 증가를 나타내었으며, 또한 세포벽합성에 따르는 bacteriaqnckr의 영향은 볼 수 없었다. Strain이 다른 bacteria나 heat-inactivated bacteria의 전처리에 의한 A..rhizogenes의 당근조직에서 hairy root형성 억제 현상은 식물세포 표면에 specific receptor sites가 존재 한다기보다는 부착에 있어서 전처리한 bacteria의 경쟁적 저해작용으로 형질전환이 다소 억제되는 것으로 사료되어졌다.

• 한국자원식물학회:학술대회논문집
• /
• 한국자원식물학회 1999년도 The 6th International Symposium on the Development of Anti-Cancer Resource from Plants
• /
• pp.46-57
• /
• 1999

Ginseng(Panax ginseng C.A. Meyer) is important medicinal plant but requires 4-year cultivation for root harvest because of slow growth. In contrast, ginseng callus and hairy roots grow vigorously and may Produce the same or more biologically active compounds for human health than natural ginseng roots. Therefore, ginseng callus and hairy roots can be used for commercial purposes. Polyacetylene, one of anti-cancer compounds in ginseng, was not detected in the callus cultured on the medium containing 2, 4-B, but cells derived from the callus growth was excellent, The ginseng calli cultured on the medium containing 2mg11 CPA and 0.05mg/1 BA was grown vigorously and produced panaxydol, one of ginseng polyacetylene. The biosynthesis of polyacetylene in callus was not affected by addition of NAA and sucrose in media. The SH medium was better than the MS medium for ginseng callus growth and biosynthesis of panaxydol. Another ginseng anti-cancer compounds, ginsenoside-Rg$_3$, Rh$_1$and Rh$_2$ were detected in ginseng hairy roots by heat treatment. Those of Panax ginseng were obtained after root disks of three-year old roots were infected with Agrobacterium rhizogenes Rl000 $A_4$T in dark condition after one month of culture. The optimum growth of hairy roots was achieved in the culture of 1/2 MS liquid medium in dark(22$^{\circ}C$) under 60 rpm gyratory shaking. Hairy roots grew well in 5 ι Erlenmeyer flasks, 1ι roller drums, 10ι jar-fermenters, and especially in 20ι air-lift .culture vessels. All heat treatments had remarkably different ginsenoside contents. Eleven ginsenosides were determined in heat treatment, eight in freeze dried hairy roots. Contents of ginsenoside-Rbl , Rb2, Rc, Rd. Re, Rf, and Rg$_1$tested in all heat treatments were less than those of freeze dried hairy roots. Contents of glnsenoside-Rg$_2$ in heat treatment for 1 hour at 105$^{\circ}C$ was 4.92mg/g dry wt, 3.9 times higher than 1.27 mg/g dry wt of freeze dried hairy roots. The optimum condition of heat treatment for the production of ginsenoside-Rg$_3$and Rhl was 2 hours at 105$^{\circ}C$, and ginsenoside content was 2.58mg/g dry wt and 3.62mg/g dry wt, respectively. The production of ginsenoside-Rh2 was the highest in heat treatment for 2 hours at 105$^{\circ}C$ among treatments examined, and ginsenoside-Rh$_2$content was 1.08mg/g dry wt.

• 한국생물공학회:학술대회논문집
• /
• 한국생물공학회 2000년도 추계학술발표대회 및 bio-venture fair
• /
• pp.250-253
• /
• 2000

We researched effects of growth on initial inoculum size, liquid volume, and medium feeding rate etc. Cell suspension inoculated at low cell concentrations showed a typical growth reduction, whereas root cultures showed an improvement in growth. In this paper, Hairy roots showed high growth rate at 0.4 % inoculum size and 100 mL liquid volume in 250 mL flask cultures.

• Applied Biological Chemistry
• /
• 제51권4호
• /
• pp.258-262
• /
• 2008

To establish the biosynthetic pathway of decursin in Angelica gigas Nakai, feeding experiment with stable isotope-labeled precursors were conducted. Umbelliferone and decursin were labeled with deuterium at C-3. The umbelliferone, the decursin, and other commercially available putative precursors, L-phenylalanine-ring-$d_5$ and trans-cinnamic acid-$d_7$, were fed to the hairy root culture of A. gigas. Each deuterated compound was incorporated into decursinol, decursinol angelate, and decursin as determined by mass spectrometric analysis. These findings confirmed the coumarin biosynthesis pathway sequence is composed of phenylalanine, cinnamic acid, umbelliferone, decursinol, and decursin.

• 생약학회지
• /
• 제31권2호
• /
• pp.235-239
• /
• 2000

The effects of several compounds related to signal transduction cascade were determined to induce the production of alizarin and purpurin in the hairy root culture system of Rubia cordifolia var. pratensis. It was found that out of five tested compounds jasmonic acid(1 mg/l) and methyl jasmonate(1 mg/l) stimulated strongly the biosynthesis of the pigments while linolenic acid(1 mg/l) induced no significant increase of the product. Yeast extract(600 mg/l) and arachidonic acid(1 mg/l) showed relatively mild inducing effects on production of alizarin. The effects of jasmonic acid and methyl jasmonate were reduced by treatment with cycloheximide(2.8 mg/l).

• 한국식물학회:학술대회논문집
• /
• 한국식물학회 1995년도 식물학심포지움 식물로부터 유용 2차대사산물의 생산 PRODUCTION OF USEFUL SECONDARY METABOLITES FROM PLANTS
• /
• pp.27-39
• /
• 1995

• 한국자원식물학회:학술대회논문집
• /
• 한국자원식물학회 2005년도 International Symposium & conference of the Plant Resources Society of Korea
• /
• pp.188-188
• /
• 2005