Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Development of DNA Markers for Trehalose Synthesis Genes in Brassica rapa L.

배추 trehalose 합성 유전자와 연관된 DNA 마커 개발

  • Published : 2009.05.30
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Abstract

High temperature stress might affect the yield and quality of Chinese cabbage. In order to develop cultivars resistant to high temperature stress, we developed polymorphic DNA markers for trehalose synthesis genes related to abiotic stress resistance. A total of 28 Brassica rapa ESTs homologous to trehalose synthesis genes of Arabidopsis were found from the NCBI database. The polymorphic DNA sequences were searched between Chinese cabbages - Chiifu, which is relatively susceptible to high temperature stress, and Kenshin, which is tolerant to high temperature stress. Among the 28 ESTs, we found 10 ESTs that have either insertion/deletion and/or single nucleotide polymorphism between the two cultivars. Those polymorphic sites were then targeted for the development of 10 PCR based markers. These molecular markers related to trehalose genes could be used not only to test their relationship with abiotic stress resistance in Chinese cabbage, but also the development of abiotic stress resistant cultivars using MAS.

배추는 재배 온도에 따라 수확량과 품질에 많은 영향을 받을 수 있다. 고온 스트레스 저항성 배추품종 육성을 위해 본 연구는 스트레스 저항성에 관련이 있다고 알려진 trehalose 유전자 관련 다형성 마커를 개발하였다. 아라비돕시스 trehalose 합성 유전자와 유사한 총 28개의 배추 EST를 NCBI database에서 찾고 고온에 상대적으로 약한 지부품종과 고온에 잘 견디는 품종인 권심을 대상으로 다형성을 조사하였다. 이 중 10개의 EST에서 insertion/deletion 또는 single nucleotide polymorphism을 발견하여 이를 바탕으로 쉽게 이용이 가능한 10개의 다형성 PCR 마커를 개발하였다. 본 연구에서 개발된 trehalose 분자마커는 앞으로 배추 작물에서 환경 스트레스 저항성과 유전적 연관성을 확인하는데 이용될 수 있고 MAS를 이용한 품종육성에 이용될 수 있다고 기대된다.

Keywords

References

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