• Title/Summary/Keyword: Agrobacterium rhizogenes

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Agrobacterium rhizogenes 에 의하여 유도된 도라지 (Platycodon grandiflorum DC.) Hairy Root 의 배양 (Culture of Hairy Roots Induced by Agrobacterium rhizogenes in Platycodon grandiflorum DC. (Balloon Flower))

  • 김병노
    • Journal of Plant Biology
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    • 제33권3호
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    • pp.183-188
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    • 1990
  • Induction and culture of hairy roots by Agrobacterium rhizogenes A4 were carried out in Platycodon grandiflorum DC. After 2-4 weeks of inoculation with Agrobacterium rhizogenes hairy roots were formed at root segments in the balloon flower. Optimized growth of hairy roots was obtained in hormone-free MS medium, 6% sucrose and pH 5.8. The pattern of ginsenoside in the transformed roots was not different with that in the ordinary roots.

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Agrobacterium rhizogenes strains이 황금 모상근 유도와 생육에 미치는 영향 (Influence of different strains of Agrobacterium rhizogenes on hairy root induction and growth in Scutellaria baicalensis)

  • 박우태;김영선;박남일;김행훈;이숙영;박상언
    • 농업과학연구
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    • 제38권2호
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    • pp.213-217
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    • 2011
  • Agrobacterium rhizogenes, a gram-negative soil bacterium, is one of the most widely studied among them. A, rhizogenes can transfer T-DNA, excised from Ri (root inducing)-plasmids from the bacterial to the plant cell. It is the causal agent of 'hairy root' diseases in plants, and has been used for the production of hairy root cultures from a multitude of species. Five different strains of Agrobacterium rhizogenes differed in their ability to induce Scutellaria baicalensis hairy roots and also showed varying effects on the growth in hairy root cultures. A. rhizogenes R 1000 is the most effective strain for the induction (57.3%) and growth (11.9 g $L^{-1}$) in hairy root of Scutellaria baicalensis. Our results demonstrate that use of suitable strains of A. rhizogenes may allow study of the regulation of flavone biosynthesis in hairy root cultures of Scutellaria baicalensis.

Agrobacterium rhizogenes strains이 배초향 모상근 유도와 Rosmarinic acid 생산에 미치는 영향 (Influence of Different Strains of Agrobacterium rhizogenes on Hairy Root Induction and Rosmarinic Acid Production in Agastache rugosa Kuntze)

  • 김종세;오은정;이숙영
    • 한국자원식물학회지
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    • 제23권1호
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    • pp.14-18
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    • 2010
  • rosmarinic acid 생산에 미치는 영향을 알아보기 위하여 5계통의 strain (13333, 15834, R1000, R1200, R1601)을 이용하여 조사한 결과 A. rhizogenes R1601이 가장 높은 72.9%의 모상근 유도율을 보였다. 모상근 유도시 모상근 발생 수와 길이 신장에 미치는 영향을 조사한 결과도 A. rhizogenes R1601으로 감염시킨 잎 조직에서 평균 5.4개의 모상근이 발생하였으며, 평균 2.0 cm의 길이 신장으로 가장 좋은 결과를 나타냈다. 다섯 계통의 A. rhizogenes감염으로부터 유도된 각각의 모상근의 생육은 서러 다른 양상을 보였으나 경향은 모상근유도 결과와 유사하였다. A. rhizogenes R1601 감염으로 유도된 모상근의 생육은 배양 2주후 건물중을 조사한 결과 13.5 g/l로 다른 계통에서 유도된 모상근 보다 생육이 양호하였으며, Rosmarinic acid 생산량도 22.6 mg/g D.W.로 다른 계통에 비하여 가장 높게 나타났다. A. rhizogenes R1601이 배초향 모상근 유도, 생육과 rosmarinic acid 생산에 가장 좋은 적합한 계통이었음을 알 수 있었다.

Agrobacterium rhisogense에 의해 형질 전환된 인삼의 모상근 배양에서 Ginsenoside의 생산 (Ginsenoside Production by Hairy Root Cultures of Panax ginseng Transformed With Agrobacterium rhizogenes)

  • 고경수;허인옥고정삼이윤진
    • KSBB Journal
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    • 제5권3호
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    • pp.263-268
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    • 1990
  • 인삼의 조직에 Agrobacterium rhizogenes strain 15834와 A4을 감염하여 형질전화체를 얻었다. 이는 인삼에서처럼 무균식물을 얻기어려운 경우 leaf disk 방법으로 모상근을 유도할 수 있었다. 모상근의 ginsenoside(Rg2,Rg1,Rf,Rd,Rc,Rbl, and Rb2)는 HPLC에 의해 定量하였으며, 진탕배양한 모상근의 ginsenoside의 함량은 0.34-1.19% 건량이었다. 이러한 결과는 재배 인삼과 배양 인삼의 ginsenoside의 함량에 비해 좋은 성과라고 사료된다.

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Agrobacterium rhizogenes에 의한 Hairy Root 형성에 대한 생리학적 연구 (Physiological Studies on the Formation of Hairy Root by the Agrobacterium rhizogenes 1. Relationships between LAA content and morphological characteristics in carrot infected by A. rhizogenes)

  • 황백;조덕이;홍성식
    • Journal of Plant Biology
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    • 제29권4호
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    • pp.275-283
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    • 1986
  • Inoculation of carrot discs with Agrobacterium rhizogenes harboring Ri plasmid resulted in transformation of cells, as revealed by the tumors and hairy roots arising from them. Measurements of IAA content using HPLC indicate that it is higher in tumors and inoculated tissues than in uninoculated tissue. A lot of meristemoids and vessel elements formed I tumor tissue and the hairy roots differentiated from meristemoids. IAA content in tumor tissues is decreased with hairy root and vessel elements formation from them. Formation of wound callus in uninoculated tissues resulted on wound healing but no formation of vessel elements and hairy roots. Tumor tissues show continuous growing on hormone free medium.

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Agrobacterium rhizogenes에 의한 인삼( Panax ginseng C. A. Meyer )근 조직에서의 Hairy Roots 유도 및 배양 (Induction and Culture of Hairy Roots from Ginseng(Panax ginseng C. A. Meyer) Roots Discs by Agrobacterium rhizogenes)

  • 황백;고경민
    • KSBB Journal
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    • 제4권3호
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    • pp.288-292
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    • 1989
  • 인참 근 조직에 Agrobacterium rhizogenes strain $A_4$를 접종하여 hairy roots 유도와 유도된 hairy roots의 배양 조건을 조사하였다. 48시간 배양된 균($2{\times}A92$bacteria/ml)을 접종하여 암조건($26{pm}1^{\circ}C$)하에서 배양하였을때 6-7주후 tumor가 형성되었으며, 10-12주후 hairy roots가 유도되었다. 근 년별 hairy roots 유도율은 5년근이 4, 6년근에 비하여 높았으며, 배지에 IAA, 2, 4-D, IBA 및 tryptophan 을 각각 첨가시켰을때 15-30mg/l tryptophan에서 tumor 및 hairy roots 유도율이 증가되었음을 나타내었다. 또한 유도된 hairy roots hormone-free인 RCM배지(sucrose 3%, pH 4.5)에서 배양하였다.

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Agrobacterium으로 형질전환시킨 갈퀴꼭두선이의 세포배양에 의한 천연염료생산 (Production of Anthraquinone Derivatives by Rubia cordifolia var. pratensis Transformed by Agrobacterium spp)

  • 신순희;김유선;김승혜
    • 생약학회지
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    • 제23권3호
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    • pp.137-141
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    • 1992
  • The cells of Rubia cordifolia var. pratensis were transformed by Agrobactrium tumefaciens strain 11157. Surface-sterilized young leaves and stems of the plants were cocultivated with bacterial suspensions. Crown galls induced from stems were cultured with variation of culturing conditions and compared with untransformed cells. The growth rates and production of anthraquinone pigments of cells were remarkably improved by transformation. Furthermore, hairy roots were induced by inoculation or cocultivation with Agrobacterium rhizogenes strains.

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Agrobacterium rhizogenes 에 의한 현사시나무의 형질전환(形質轉換) (Transformation of Populus alba × P. glandulosa by Agrobacterium rhizogenes)

  • 정경호;박용구;노의래;전영우
    • 한국산림과학회지
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    • 제78권4호
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    • pp.372-380
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    • 1989
  • 주요(主要) 조림수종(造林樹種)의 하나인 현사시나무를 Agrobacterium rhizogenes의 agropine 계통(系統)인 A4를 이용(利用)하여 유전적(遺傳的)으로 형질전환(形質轉換)시켰다. 형질전환(形質轉換) 여부는 조직(組織)내의 opine(agropine) 존재를 분석(分析)하여 확인(確認)하였다. 형질전환(形質轉換)으로 얻어진 hairy root는 1/4MS+sucrose 30g/L에서 가장 좋은 생장(生長)을 보였으며, 식물체(植物體) 재분화(再分化)는 BAP 0.5mg/l를 첨가한 MS배지(培地)에 배양(培養)하였을 때 가장 좋은 결과(結果)를 얻었다. 재분화(再分化)된 식물체(植物體)는 뿌리가 많고 형태적(形態的)으로 변형(變形)되어 정상의 식물(植物)과 구별(區別)할 수 있었다. 부분적(部分的)으로 뿌리부분(部分)만 형질전환(形質轉換) 시킴으로써 보다 많은 뿌리를 가진 개체(個體)로 만들 수 있었고 이는 임목(林木)의 지상부(地下部) 형질개량(形質改良)에 유리(有利)한 것으로 나타났다.

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Agrobacterium rhizogenes를 이용한 까마중의 형질전환(形質轉換)과 모상근(毛狀根) 배양(培養) (Transformation and Hairy Root Culture in Solanum nigrum by Agrobacterium rhizogenes)

  • 고경수;허인옥;양관팔;이운진;김창민;조필형
    • 생약학회지
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    • 제22권1호
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    • pp.26-32
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    • 1991
  • The study aimed to confirm transformation, morphology, steroid alkaloidal TLC pattern and growth rate of hairy roots. The Solanum nigrum plantlets were inoculated with Agrobacterium rhizogenes strain 15834. Hairy roots were induced by plasmid. Agropine and mannopine were detected in the hairy roots. The organization of hairy roots on the transactional morphology was undifferentiated. Culture on the medium containing hormone(IBA 2, kinetin 0.1mg/l) altered hairy roots into callus. The growth rate of hairy roots on the NN30 liquid medium was 52 times heavier than in the original state and this was higher than on the other media. The results of TLC analysis indicated that the hairy roots produced steroidal alkaloids resembling those of normal roots.

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Simple Detection of Opines by Paper Electrophoresis for Hairy Roots Transformed with Agrobacterium rhizogenes Strains

  • Cho, Hyeon-Je;Ha, Hyo-Cheol;Lee, Jae-Sung;Widholm, Jack M.
    • Journal of Applied Biological Chemistry
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    • 제44권2호
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    • pp.92-94
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    • 2001
  • A simple protocol for the detection of opines, cucumopines and mikimopines using a general horizontal or vertical get electrophoresis system for protein or DNA separation in the laboratory are demonstrated. This electrophoresis method can also be applied to other opines as long as correct detection reagent and buffer system are used.

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