한국약용작물학회지 (Korean Journal of Medicinal Crop Science)

  • 제18권3호
  • /
  • Pages.186-190
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  • 2010
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  • 1225-9306(pISSN)
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  • 2288-0186(eISSN)
한국약용작물학회 (The Korean Society of Medicinal Crop Science)
권호 표지

5S와 45S rDNA 유전자를 이용한 제주도산 애기더덕 (Codonopsis minima)과 더덕 (C. lanceolata)의 FISH 패턴 분석

Analysis of FISH patterns using 5S and 45S rDNAs in Codonopsis minima and C. lanceolata from Jeju Island

  • 김수영 (국립생물자원관 야생생물유전자원센터) ;
  • 김찬수 (국립산림과학원 난대산림연구소)
  • Kim, Soo-Young (Wildlife Genetic Resources Center, National Institute of Biological Resources) ;
  • Kim, Chan-Soo (Warm-Temperate Forest Research Center, Korea Forest Research Institute)
  • 투고 : 2010.04.26
  • 심사 : 2010.06.14
  • 발행 : 2010.06.30
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초록

The chromosome number was identified and fluorescence in situ hybridization(FISH) mapping of 5S and 45S rDNAs were conducted for C. minima and C. lanceolata in the genus Codonopsis from Jeju island. In this study, we have confirmed that the somatic metaphase chromosome number determined as 2n=2x=16 was the same as the findings from the previous studies. While the conventional staining method makes it rather difficult to distinguish satellite chromosomes due to high degree of variability, FISH analysis produced the exact number and location of 5S and 45S rDNAs. Both species in the genus Codonopsis have a pair of 5S rDNA and their gene loci were observed on chromosome 3. Although two pairs of 45S rDNAs (one on chromosome 1 and the other on chromosome 8) were identified in both species, the 45S rDNA signals on chromosome 8 in C. minima were significantly weaker than those on chromosome 1. In addition, the 45S rDNA signals on chromosome 1 in C. lanceolata showed that the chromosome is non-homologus. In this study, we have determined cytogenetic characteristics of C. minima and C. lanceolata according to their gene replication patterns.

키워드

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