Journal
INTERNATIONAL JOURNAL OF MEDICINAL MUSHROOMS
Volume 17, Issue 5, Pages 481-489Publisher
BEGELL HOUSE INC
DOI: 10.1615/IntJMedMushrooms.v17.i5.80
Keywords
medicinal mushrooms; growth rate; species of genus Lentinus; Lentinula; Lentinus edodes; Shiitake mushroom
Funding
- University of South Alabama Research Council
- University of South Alabama Undergraduate Research Program
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Species of mushroom genus Lentinus (=Lentinula) are best known for the commercially important and extensively studied culinary-medicinal shiitake, L. edodes. A few mycelium growth studies have focused on Lentinus boryana, but information is lacking for L. raphanica and L. aciculospora, endemic to the Americas. In this study, 14 dikaryon strains representing 5 Lentinus species were grown on 5 nutritive agar media at increments of 5 degrees C. Growth for each species was significantly slower on corn meal agar, but no differences were found among malt extract, potato dextrose, malt peptone, and yeast malt extract agars. Lentinus aciculospora and L. boryana consistently exhibited the slowest mycelium growth rates among all species and across all temperatures tested, with optima at 15 degrees C and 20 degrees C. The fastest mycelium growth rates for L. edodes, L. novaezelandiae, and L. raphanica occurred at 25 degrees C. Strains of the latter continued to grow well at 30 degrees C, whereas growth of the other 2 species declined significantly. Differences in mycelium growth rates for American strains could be partially explained by their geographic locations, indicating that understanding this physiological parameter has important ramifications for the edible mushroom industry.
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