Mycobiology.  2020 Apr;48(2):115-121. 10.1080/12298093.2020.1727401.

Analysis of Genetic Diversity and Population Structure of Wild Strains and Cultivars Using Genomic SSR Markers in Lentinula edodes

Affiliations
  • 1Department of Forest Science, Chungbuk National University, Cheongju, Republic of Korea
  • 2Department of Biology, Chungbuk National University, Cheongju, Republic of Korea
  • 3Division of Applied Life Science and Research Institute of Life Science, Gyeongsang National University, Jinju, Republic of Korea
  • 4Department of Industrial Plant Science and Technology, Chungbuk National University, Cheongju, Republic of Korea

Abstract

In this study, the genetic diversity and the population structure of 77 wild strains and 23 cultivars of Lentinula edodes from Korea were analyzed using 20 genomic SSRs, and their genetic relationship was investigated. The tested strains of L. edodes were divided into three sub-groups consisting of only wild strains, mainly wild strains and several cultivars, and mainly cultivars and several wild strains by distance-based analysis. Using model-based analysis, L. edodes strains were divided into two subpopulations; the first one consisting of only wild strains and the second one with mainly cultivars and several wild strains. Moreover, AMOVA analysis revealed that the genetic variation in the cultivars was higher than that in the wild strains. The expected and observed heterozygosity and values indicating the polymorphic information content of L. edodes cultivars from Korea were also higher than that of the wild strains. Based on these results, we presume that the cultivars in Korea have developed by using numerous strains from other countries. In conclusion, the usage of wild strains for the development of new cultivars could improve the adaptability of L. edodes to biotic and abiotic stress.

Keyword

Lentinula edodes; genetic diversity; population structure
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