과수 형질전환 국내 연구 동향 및 전망
Current status and outlook on genetic transformation of fruit trees in Korea
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초록
국내 과수분야의 형질전환 연구동향과 전망에 대해 살펴보았다. 과수에서 형질전환 기술은 교배육종의 한계를극복하고 보완할 수 있는 기술의 하나로 여겨지고 있고1990년 초반 이래 기술개발에 대한 연구가 수행되어 오고 있다. 사과에서는 후지, 감홍 등의 주요 재배품종에대한 형질전환 기술이 확립되어 있고, 포장 발현분석 단계로 진입하고 있는 중이다. 감귤과 참다래는 형질전환기술이 일부 개발되었으나, 다양한 품종으로 확대하여적용하는 단계까지는 이르지 못한 상태이다. 포도 등의타 과수에서는 형질전환 성공사례가 보고된 바 없으며, 현재 기술개발 연구단계에 머물러 있는 것으로 판단된다. 또한 항생제 선발 대체, 형질전환 대목, 부위 및 생육시기에 따른 조절 기술 개발 등은 실용화를 조기에 앞당기기 위한 선결조건으로 여겨지고 있다.
Abstract
The paper reviewed research status and outlook of genetic transformation in fruit trees in Korea. Genetic transformation has been long considered as an alternative technique overcoming limitation of conventional breeding and conducted since early 1990’s. An efficient genetic transformation was established with major cultivars of apple, even in Fuji and Gamhong, and some transgenic apple plants have been transferred into the greenhouse for further analysis of gene expression. A few successes of genetic transformation have been reported and application to a variety of cultivars tried in citrus and kiwifruit. Successful genetic transformation has not been reported in the other fruit trees including grapevine, yet and it is considered being at the level of research. Those factors including replacement of antibiotics as a selective agent, use of transgenic rootstocks and manipulation of gene expression at proper parts and developmental stages have been prerequisites for the rapid commercialization of transgenic fruit plants.
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