Vaario , L-M , Sah , S P , Norisada , M , Narimatsu , M & Matsushita , N 2019 , ' Tricholoma matsutake may take more nitrogen in the organic form than other ectomycorrhizal fungi for its sporocarp development : the isotopic evidence ' , Mycorrhiza , vol. 29 , no. 1 , pp. 51-59 . https://doi.org/10.1007/s00572-018-0870-8
Title: | Tricholoma matsutake may take more nitrogen in the organic form than other ectomycorrhizal fungi for its sporocarp development : the isotopic evidence |
Author: | Vaario, Lu-Min; Sah, Shambhu Prasad; Norisada, Mariko; Narimatsu, Maki; Matsushita, Norihisa |
Contributor organization: | Department of Forest Sciences Staff Services Helsinki Institute of Sustainability Science (HELSUS) University Management |
Date: | 2019-01 |
Language: | eng |
Number of pages: | 9 |
Belongs to series: | Mycorrhiza |
ISSN: | 1432-1890 |
DOI: | https://doi.org/10.1007/s00572-018-0870-8 |
URI: | http://hdl.handle.net/10138/298425 |
Abstract: | Tricholoma matsutake is an ectomycorrhizal (ECM) fungus capable of in vitro saprotrophic growth, but the sources of C and N used to generate sporocarps in vivo are not well understood. We examined natural abundance isotope data to investigate this phenomenon. For this purpose, C, N and their stable isotopes (13C, 15N) content of fungal sporocarps and their potential nutrient sources (i.e., foliage, litter, fine roots, wood, and soil) were investigated from two well-studied sites in Finland and Japan. Our results show that δ13C values of T. matsutake and other fungal groups are consistent with those of most studies, but a very high δ15N value (16.8‰ ± 2.3) is observed in T. matsutake. Such isotopic pattern of fungal δ15N suggests that matsutake has a greater proteolytic potential to digest chemically complex 15N-enriched organic matter and hydrophobic hyphae. This assumption is further supported by a significant and positive correlation between δ13Ccap–stipe and δ15Ncap–stipe exclusively in T. matsutake, which suggests common C and N sources (protein) possible for isotopically enriched cap. The 13C increase of caps relative to stipe presumably reflects greater contents of 13C-enriched protein than 13C-depleted chitin. We conclude that T. matsutake is a typical ECM fungus which obtains for its sporocarp development for both C and N from a common protein source (vs. photosynthetic carbon) present in soil organic matter. |
Subject: |
1171 Geosciences
Stable isotope Ectomycorrhizal fungi Source Sporocarps Tricholoma matsutake PINUS-DENSIFLORA FOREST NATURAL N-15 ABUNDANCE MYCORRHIZAL FUNGI FRUIT BODIES IN-VITRO CARBON PATTERNS PLANTS C-13 CULTIVATION |
Peer reviewed: | Yes |
Rights: | cc_by |
Usage restriction: | openAccess |
Self-archived version: | publishedVersion |
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