Wide geographical and ecological distribution of nitrogen and carbon gains from fungi in pyroloids and monotropoids (Ericaceae) and in orchids

* Stable isotope abundance analyses recently revealed that some European green orchids and pyroloids (Ericaceae) are partially myco-heterotrophic, exploiting mycorrhizal fungi for organic carbon and nitrogen. Here we investigate related species to assess their nutritional mode across various forest...

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Veröffentlicht in:The New phytologist. - 1979. - 175(2007), 1 vom: 15., Seite 166-175
1. Verfasser: Zimmer, Katja (VerfasserIn)
Weitere Verfasser: Hynson, Nicole A, Gebauer, Gerhard, Allen, Edith B, Allen, Michael F, Read, David J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Anthracyclines ericamycin 11052-01-0 Carbon 7440-44-0 Nitrogen N762921K75
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245 1 0 |a Wide geographical and ecological distribution of nitrogen and carbon gains from fungi in pyroloids and monotropoids (Ericaceae) and in orchids 
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520 |a * Stable isotope abundance analyses recently revealed that some European green orchids and pyroloids (Ericaceae) are partially myco-heterotrophic, exploiting mycorrhizal fungi for organic carbon and nitrogen. Here we investigate related species to assess their nutritional mode across various forest and climate types in Germany and California. * C- and N-isotope signatures of five green pyroloids, three green orchids and several obligate myco-heterotrophic species (including the putatively fully myco-heterotrophic Pyrola aphylla) were analysed to quantify the green plants' nutrient gain from their fungal partners and to investigate the constancy of enrichment in (13)C and (15)N of fully myco-heterotrophic plants from diverse taxa and locations relative to neighbouring autotrophic plants. * All green pyroloid and one orchid species showed significant (15)N enrichment, confirming incorporation of fungi-derived N compounds while heterotrophic C gain was detected only under low irradiance in Orthilia secunda. Pyrola aphylla had an isotope signature equivalent to those of fully myco-heterotrophic plants. * It is demonstrated that primarily N gain from mycorrhizal fungi occurred in all taxonomic groups investigated across a wide range of geographical and ecological contexts. The (13)C and (15)N enrichment of obligate myco-heterotrophic plants relative to accompanying autotrophic plants turned out as a fairly constant parameter 
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700 1 |a Hynson, Nicole A  |e verfasserin  |4 aut 
700 1 |a Gebauer, Gerhard  |e verfasserin  |4 aut 
700 1 |a Allen, Edith B  |e verfasserin  |4 aut 
700 1 |a Allen, Michael F  |e verfasserin  |4 aut 
700 1 |a Read, David J  |e verfasserin  |4 aut 
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