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논문 기본 정보

자료유형
학술저널
저자정보
이성일 (한국원자력연구소) Truong Xuan Nguyen (Vietnam National University of Agriculture) 김종화 (강원대학교) 김남수 (강원대학교)
저널정보
한국유전학회 Genes & Genomics Genes & Genomics Vol.41 No.8
발행연도
2019.1
수록면
941 - 950 (10page)

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Background B chromosomes are supernumerary chromosomes found in numerous plant species, including in the genus Lilium. Lilium amabile, an endemic Korean Lilium species, carries B chromosomes which are highly variable in terms of numbers and shape among the accessions collected throughout the Korea. Class 1 retrotransposons are highly abundant in the genome of Lilium species, but their biological functions are still obscure. Lilium species were known to hold high diversities derived from retrotransposons. Objective In this study, genetic diversities among the L. amabile accessions were analyzed to better understand relationships between genetic variations and cytological diversities. Methods Chromosomes were prepared from 95 L. amabile accessions for cytological identification. Genetic variations were analyzed by inter-retrotransposon amplified polymorphism (IRAP), and genetic differentiation was evaluated via Tajima’s D neutrality and FST analyses. Population structure and phylogenetic analyses were also carried out. Results The L. amabile accessions were classified into 11 cytotypes by the chromosome constitutions. Genetic diversity measured by IRAP analysis revealed high genetic diversity among the accessions. In the joint analysis of cytological variation with genetical variation, IRAP diversity was not related to the cytological diversities of diploid and aneuploids among L. amabile accessions, and genetic differentiation was not obvious. Moreover, the geographical distribution of L. amabile was not related to either IRAP diversity or cytological diversity. Conclusion The B chromosome-carrying aneuploids occurred randomly among diploids throughout Korea, and IRAP diversification predated L. amabile dispersion in Korea without genetic differentiation.

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