Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Construction of DNA Profile Data Base of Strawberry Cultivars Using Microsatellite Markers

Microsatellite 마커를 이용한 딸기 품종의 DNA Profile Database 구축

  • Hong, Jee-Hwa (Variety Testing Division, Korea Seed and Variety Service, Ministry for Agriculture, Food and Rural Affairs) ;
  • Choi, Keun-Jin (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Kwon, Yong-Sham (Department of Genetic Engineering, College of Natural Resources and Life Science, Dong-A University)
  • 홍지화 (농림축산식품부 국립종자원 종자검정연구센터) ;
  • 최근진 (국립원예특작과학원 채소과) ;
  • 권용삼 (동아대학교 생명자원과학대학 유전공학과)
  • Received : 2014.05.22
  • Accepted : 2014.07.14
  • Published : 2014.12.31
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Abstract

This study was carried out to construct a DNA profile database of 100 strawberry cultivars using microsatellite markers. Two hundred seventy four microsatellite primer pairs were screened with a set of 21 strawberry cultivars with different morphological traits. Twenty five primer pairs were selected because they produced reliable and reproducible fingerprints. These primer pairs were used to develop DNA profiles of 100 strawberry cultivars. Three to thirteen alleles were detected by each marker with an average of 7.50. The average polymorphism information content varied from 0.331 to 841 (average 0.706). Cluster analysis showed that the 100 cultivars were divided into 7 major groups reflecting geographic origin and pedigree information. Moreover, most of the cultivars could be discriminated by marker genotypes. These markers will be useful as a tool for the protection of plant breeders' intellectual property rights in addition to providing the means to intervene seed disputes relating to variety authentication.

국내외에서 재배되고 있는 딸기 100품종의 DNA profile 데이터베이스를 구축하기 위하여 다형성이 높은 microsatellite 마커의 선정과 유전적 유사도 분석을 통한 품종식별력 검정 등에 대한 연구를 수행하였다. 딸기 21품종을 274개의 microsatellite 마커로 검정하여 반복 재현성이 높은 25개의 다형성이 높은 마커를 선정하였다. 이들 마커와 국내외에서 재배되고 있는 딸기 100품종을 검정하였을 때 마커당 평균 대립유전자수는 7.50개로 나타났고, 3-13개까지 다양한 분포를 나타내었다. PIC 값은 마커의 유전자형에 따라 0.333-0.841 범위에 속하였으며 평균값도 0.706으로 높게 나타났다. Microsatellite 마커의 대립유전자를 이용하여 딸기 100 품종에 대한 계통도를 작성하였을 때 품종 육성의 계보 및 육성 지역에 따라 7개의 그룹으로 크게 나누어졌으며 2품종을 제외한 98품종이 microsatellite 마커의 유전자형에 의해 식별이 되는 것으로 나타났다. 본 연구에서 얻어진 딸기 품종별 DNA profile 데이터베이스는 품종보호 출원 품종의 재배심사 및 품종진위성과 관련된 종자분쟁을 해결하는 수단으로 유용하게 활용될 수 있을 것이다.

Keywords

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