Genetic diversity among cultivated and wild Panax ginseng populations revealed by high-resolution microsatellite markers

Journal of Ginseng Research

Young Chang Kim¹  Nomar Espinosa Waminal²  Woojong Jang²  Yeeun Jang²  Jung Woo Lee³  Tae-Jin Yang³  Nam-Hoon Kim⁴ 

[1] Chromosome Research Institute, Department of Life Science, Sahmyook University, Seoul, Republic of Korea;Department of Plant Science, Plant Genomics and Breeding Institute, and Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea;Ginseng Research Division, National Institution of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Republic of Korea;Phyzen Genomics Institute, Seongnam, Republic of Korea;

关键词: Breeding;    Genetic diversity;    Heterozygosity;    Microsatellite markers;    Panax ginseng;   

DOI  :  

来源: DOAJ

【 摘 要 】

Background: Ginseng (Panax ginseng Meyer) is one of the world's most valuable medicinal plants with numerous pharmacological effects. Ginseng has been cultivated from wild mountain ginseng collections for a few hundred years. However, the genetic diversity of cultivated and wild ginseng populations is not fully understood. Methods: We developed 92 polymorphic microsatellite markers based on whole-genome sequence data. We selected five markers that represent clear allele diversity for each of their corresponding loci to elucidate genetic diversity. These markers were applied to 147 individual plants, including cultivars, breeding lines, and wild populations in Korea and neighboring countries. Results: Most of the 92 markers displayed multiple-band patterns, resulting from genome duplication, which causes confusion in interpretation of their target locus. The five high-resolution markers revealed 3 to 8 alleles from each single locus. The proportion of heterozygosity (He) ranged from 0.027 to 0.190, with an average of 0.132, which is notably lower than that of previous studies. Polymorphism information content of the markers ranged from 0.199 to 0.701, with an average of 0.454. There was no statistically significant difference in genetic diversity between cultivated and wild ginseng groups, and they showed intermingled positioning in the phylogenetic relationship. Conclusion: Ginseng has a relatively high level of genetic diversity, and cultivated and wild groups have similar levels of genetic diversity. Collectively, our data demonstrate that current breeding populations have abundant genetic diversity for breeding of elite ginseng cultivars.

【 授权许可】

Unknown