Zn2+, a key factor of colony morphogenesis of Tricholoma matsutake
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Abstract
Tricholoma matsutake is a basidiomycete producing edible fruiting bodies known as matsutake in Japanese. Matsutake is one of the most valuable edible mushrooms in Japan. Colony morphology on agar plates of T. matsutake is known to vary depending on compositions of media used, while the mechanism is still unknown. In our present work, we have found Zn2+ affects colony morphology of T. matsutake. When Zn2+ was added at concentration more than 1 µM, colony got wrinkled and aerial hyphae formation was activated. No such morphological changes have been confirmed without Zn2+ addition or at concentration less than 1 µM, even when other nutritional ingredients are provided sufficiently. None of the Zn2+ concentrations examined present has affected colony diameter, dry weight, and water content. These findings imply Zn2+ is a key factor involved in colony morphogenesis of T. matsutake such as colony wrinkling and aerial hyphae formation. Metabolomic information obtained with gas chromatography–mass spectrometry has indicated that Zn2+ deficiency has influences on carbohydrate and l-serine metabolisms.
Keywords
Tricholoma matsutake Colony morphology Zinc Aerial hyphae MetabolomicsNotes
Acknowledgments
GC/MS data were acquired with equipment in the Laboratory of Systematic Forest and Forest Products Sciences in the Graduate School of Kyushu University. We’d appreciate kindness of Dr. Shimizu, an associate professor of the laboratory.
Compliance with ethical standards
Conflict of interest
The authors declare no conflicts of interest. All the experiments undertaken in this study comply with the current laws of the country where they were performed.
Funding
This work was supported by JSPS Grant-in-Aid for Challenging Exploratory Research Number 24658155.
Supplementary material
References
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