Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Transformation of A Plant by Ascorbate Peroxidase Gene using Agrobacterium tumefaciens

Ascorbate Peroxidase 유전자의 도입에 의한 식물의 형질전환

  • 이인애 (경북대학교 농생명과학대학) ;
  • 이효신 (임목육종연구소) ;
  • 배은경 (경북대학교 농생명과학대학) ;
  • 김기용 (축산기술연구소) ;
  • 이병현 (경상대학교 축산과학부) ;
  • 손대영 (경상대학교 대학원 분자생물학과) ;
  • 조진기 (경북대학교 농생명과학대학)
  • Published : 2002.06.01
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Abstract

This study was conducted to obtain the transformed tobacco (Nicotiana tubacum) plants with cytosolic ascorbate peroxidase gene(ApxSC7) using Agrobacterium tumefaciens LBA4404. A cDNA encoding the cytosolic ascorbate peroxidase of strawberry, ApxSC7, was introduced into tobacco plants via Agrobacterium-mediated gene transfer system. The expression vector, pIG-AP8, harboring ApxSC7 gene was used for production of transgenic tobacco plants. A large number of transgenic plants were regenerated on a medium containing hygromycin. Integration of ApxSC7 gene was confirmed by PCR and Southern blot analyses with genomic DNA. Northern blot analyses revealed that the pIGap8 gene was constitutively expressed.

환경 스트레스에 의해 야기되는 활성 산소종에 의한 피해에 내성을 가지는 식물의 개발을 위하여 딸기 유래의 cytosolic ascorbate peroxidase 유전자(ApxSC7)를 Agrobacterium tume-faciens LBA4404를 매개로 형질전환 시켰다. Hygromycin으로 선발된 캘러스로부터 재분화 된 식물체는 야생형과 비교하여 형태적으로 차이를 나타내지 않았다. PCR 및 Southern blot 분석을 통하여 형질전환 식물체의 염색체 내에 ApxSC7 유전자가 integration 되었음을 확인하였다. 담배 잎으로부터 total RNA를 분리하여 Northern blot 분석을 실시한 결과, 도입된 유전자가 형질전환 식물체 내에서 지속적으로 발현된다는 것을 확인하였다.

Keywords

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