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http://dx.doi.org/10.5352/JLS.2012.22.1.62

A Phylogenetic Relationship between Foreign and Korean Strains of Flammulina velutipes Identified by rDNA-ITS Sequence Analysis  

Hwang, Gwang-Rip (Department of Life Sciences and Biotechnology, Kyungpook National University)
Woo, Ju-Ri (Department of Life Sciences and Biotechnology, Kyungpook National University)
Yoon, Hyeok-Jun (Department of Life Sciences and Biotechnology, Kyungpook National University)
Lee, Chang-Yun (Greenpeace Mushroom Co.)
Lee, Sang-Han (Food & Bio-Industry Research Institute and Department of Food Science & Technology)
Kong, Won-Sik (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA)
Kim, Jong-Guk (Department of Life Sciences and Biotechnology, Kyungpook National University)
Publication Information
Journal of Life Science / v.22, no.1, 2012 , pp. 62-73 More about this Journal
Abstract
This study was carried out to investigate the genetic relationship of Flammulina velutipes with other species. The ribosomal DNA cluster containing 4 rRNA genes from F. velutipes 4154 were sequenced. The length of the rDNA cluster sequence was estimated at 7,403 bp long and consisted of 1,806 bp of SSU rDNA, 245 bp of ITS 1 region, 159 bp of 5.8S rDNA, 308 bp of ITS 2 region, 3,402 bp of LSU rDNA, 1,400 bp of IGS 1 region, and 83 bp of 5S rDNA. The F. velutipes 4154 genes were contained in the rDNA cluster of F. velutipes in the order of SSU rDNA - ITS 1 - 5.8S rDNA - ITS 2 - LSU rDNA - IGS 1 - 5S rDNA. The phylogenetic relationships of 20 strains of Tricholomataceae and Physalacriaceae were analyzed by conducting distance analysis using the Neighbor-joining (NJ) method. The 20 strains used in this study were divided into three groups and the strains of the genus Flammulina were related very closely to strains of Physalacria bambusae.
Keywords
Flammulina velutipes; rDNA cluster; ITS region; phylogenetic relationships;
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