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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.431 SNIP: 0.716 CiteScore™: 2.6

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018026535
pages 677-683

Ultra-Low Freezing to Preserve the Lingzhi or Reishi Medicinal Mushroom Ganoderma lucidum (Agaricomycetes)

Pamela Leonardi
Department of Agricultural Sciences, University of Bologna, Bologna, Italy
Federico Puliga
Department of Agricultural Sciences, University of Bologna, Bologna, Italy
Mirco Iotti
Department of Life, Health and Environmental Science, University of L'Aquila, L'Aquila, Italy
Federica Piattoni
Department of Agricultural Sciences, University of Bologna, Bologna, Italy
Alessandra Zambonelli
Department of Agricultural Sciences, University of Bologna, Bologna, Italy

ABSTRACT

Ganoderma lucidum (Curtis) P. Karst., commonly used in traditional Chinese medicine, is characterized by strong genetic and phenotypic variability that reflects its active components. To preserve such a source of pharmacologically active metabolites, specimens must be collected from different geographic regions and their genetic integrity ensured during storage. To this aim, we tested the effect of ultra-low freezing (ULF) at -120°C on the vitality, mycelial growth rate, and fruiting ability of 3 Italian strains of G. lucidum. Results showed that all strains reacted positively to ULF, demonstrating an ability to recover after 3 months of storage without morphological or physiological changes occurring, regardless of treatment. The successful storage of G. lucidum at -120°C opens up the possibility to create a germplasm bank to collect strains of this medicinal fungus from throughout Europe, thereby contributing to the maintenance of its diversity.


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