Tricholoma matsutake may take more nitrogen in the organic form than other ectomycorrhizal fungi for its sporocarp development: the isotopic evidence.
Identifieur interne : 000291 ( Main/Exploration ); précédent : 000290; suivant : 000292Tricholoma matsutake may take more nitrogen in the organic form than other ectomycorrhizal fungi for its sporocarp development: the isotopic evidence.
Auteurs : Lu-Min Vaario [Finlande, Japon] ; Shambhu Prasad Sah [Finlande] ; Mariko Norisada [Japon] ; Maki Narimatsu [Japon] ; Norihisa Matsushita [Japon]Source :
- Mycorrhiza [ 1432-1890 ] ; 2019.
Descripteurs français
- KwdFr :
- MESH :
- analyse : Isotopes de l'azote, Isotopes du carbone.
- croissance et développement : Tricholoma.
- métabolisme : Azote, Carbone, Composés chimiques organiques, Tricholoma.
- physiologie : Mycorhizes.
- Finlande, Japon.
- Wicri :
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Carbon Isotopes, Nitrogen Isotopes.
- chemical , metabolism : Carbon, Nitrogen, Organic Chemicals.
- geographic : Finland, Japan.
- growth & development : Tricholoma.
- metabolism : Tricholoma.
- physiology : Mycorrhizae.
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.
DOI: 10.1007/s00572-018-0870-8
PubMed: 30406843
PubMed Central: PMC6311186
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<term>Carbon Isotopes (analysis)</term>
<term>Finland (MeSH)</term>
<term>Japan (MeSH)</term>
<term>Mycorrhizae (physiology)</term>
<term>Nitrogen (metabolism)</term>
<term>Nitrogen Isotopes (analysis)</term>
<term>Organic Chemicals (metabolism)</term>
<term>Tricholoma (growth & development)</term>
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<term>Finlande (MeSH)</term>
<term>Isotopes de l'azote (analyse)</term>
<term>Isotopes du carbone (analyse)</term>
<term>Japon (MeSH)</term>
<term>Mycorhizes (physiologie)</term>
<term>Tricholoma (croissance et développement)</term>
<term>Tricholoma (métabolisme)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Carbon Isotopes</term>
<term>Nitrogen Isotopes</term>
</keywords>
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<term>Nitrogen</term>
<term>Organic Chemicals</term>
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<term>Japan</term>
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<term>Isotopes du carbone</term>
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</keywords>
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<term>Carbone</term>
<term>Composés chimiques organiques</term>
<term>Tricholoma</term>
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<front><div type="abstract" xml:lang="en">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 (<sup>13</sup>
C, <sup>15</sup>
N) 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 δ<sup>13</sup>
C values of T. matsutake and other fungal groups are consistent with those of most studies, but a very high δ<sup>15</sup>
N value (16.8‰ ± 2.3) is observed in T. matsutake. Such isotopic pattern of fungal δ<sup>15</sup>
N suggests that matsutake has a greater proteolytic potential to digest chemically complex <sup>15</sup>
N-enriched organic matter and hydrophobic hyphae. This assumption is further supported by a significant and positive correlation between δ<sup>13</sup>
C<sub>cap-stipe</sub>
and δ<sup>15</sup>
N<sub>cap-stipe</sub>
exclusively in T. matsutake, which suggests common C and N sources (protein) possible for isotopically enriched cap. The <sup>13</sup>
C increase of caps relative to stipe presumably reflects greater contents of <sup>13</sup>
C-enriched protein than <sup>13</sup>
C-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.</div>
</front>
</TEI>
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<ArticleTitle>Tricholoma matsutake may take more nitrogen in the organic form than other ectomycorrhizal fungi for its sporocarp development: the isotopic evidence.</ArticleTitle>
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<Abstract><AbstractText>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 (<sup>13</sup>
C, <sup>15</sup>
N) 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 δ<sup>13</sup>
C values of T. matsutake and other fungal groups are consistent with those of most studies, but a very high δ<sup>15</sup>
N value (16.8‰ ± 2.3) is observed in T. matsutake. Such isotopic pattern of fungal δ<sup>15</sup>
N suggests that matsutake has a greater proteolytic potential to digest chemically complex <sup>15</sup>
N-enriched organic matter and hydrophobic hyphae. This assumption is further supported by a significant and positive correlation between δ<sup>13</sup>
C<sub>cap-stipe</sub>
and δ<sup>15</sup>
N<sub>cap-stipe</sub>
exclusively in T. matsutake, which suggests common C and N sources (protein) possible for isotopically enriched cap. The <sup>13</sup>
C increase of caps relative to stipe presumably reflects greater contents of <sup>13</sup>
C-enriched protein than <sup>13</sup>
C-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.</AbstractText>
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<Day>9</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
</History>
<PublicationStatus>ppublish</PublicationStatus>
<ArticleIdList><ArticleId IdType="pubmed">30406843</ArticleId>
<ArticleId IdType="doi">10.1007/s00572-018-0870-8</ArticleId>
<ArticleId IdType="pii">10.1007/s00572-018-0870-8</ArticleId>
<ArticleId IdType="pmc">PMC6311186</ArticleId>
</ArticleIdList>
</PubmedData>
</pubmed>
<affiliations><list><country><li>Finlande</li>
<li>Japon</li>
</country>
<region><li>Région de Kantō</li>
<li>Uusimaa</li>
</region>
<settlement><li>Helsinki</li>
<li>Tokyo</li>
</settlement>
<orgName><li>Université d'Helsinki</li>
<li>Université de Tokyo</li>
</orgName>
</list>
<tree><country name="Finlande"><region name="Uusimaa"><name sortKey="Vaario, Lu Min" sort="Vaario, Lu Min" uniqKey="Vaario L" first="Lu-Min" last="Vaario">Lu-Min Vaario</name>
</region>
<name sortKey="Sah, Shambhu Prasad" sort="Sah, Shambhu Prasad" uniqKey="Sah S" first="Shambhu Prasad" last="Sah">Shambhu Prasad Sah</name>
</country>
<country name="Japon"><region name="Région de Kantō"><name sortKey="Vaario, Lu Min" sort="Vaario, Lu Min" uniqKey="Vaario L" first="Lu-Min" last="Vaario">Lu-Min Vaario</name>
</region>
<name sortKey="Matsushita, Norihisa" sort="Matsushita, Norihisa" uniqKey="Matsushita N" first="Norihisa" last="Matsushita">Norihisa Matsushita</name>
<name sortKey="Narimatsu, Maki" sort="Narimatsu, Maki" uniqKey="Narimatsu M" first="Maki" last="Narimatsu">Maki Narimatsu</name>
<name sortKey="Norisada, Mariko" sort="Norisada, Mariko" uniqKey="Norisada M" first="Mariko" last="Norisada">Mariko Norisada</name>
</country>
</tree>
</affiliations>
</record>
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