Cell line authentication and genetic relatedness of lines of the shiitake mushroom, Lentinus edodes.

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Abstract
Forty-five isolates of the shiitake mushroom, L. edodes were partitioned into 24 genotypic classes based on isozyme variability at 11 marker loci. A conservative calculation indicates that over 200,000 genotypic classes of L. edodes could now be recognized and authenticated based on this genetic variability. Coefficients of genetic relatedness between genotypic classes were determined. Comparisons of relatedness included mean, highest and lowest coefficients of genetic similarity. A dendrogram was constructed from similarity coefficients to provide further insights into the relationships of the shiitake lines examined. Applications of this genetic information for commercial breeding of this fungus are discussed.