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

Title data

Preiß, Katja ; Hynson, Nicole A. ; Gebauer, Gerhard ; Allen, Edith B. ; Allen, Michael F. ; Read, David J.:
Wide geographical and ecological distribution of nitrogen and carbon gains from fungi in pyroloids and monotropoids (Ericaceae) and in orchids.
In: New Phytologist. Vol. 175 (2007) Issue 1 . - pp. 166-175.
ISSN 1469-8137
DOI: https://doi.org/10.1111/j.1469-8137.2007.02065.x

Abstract in another language

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 C-13 and N-15 of fully myco-heterotrophic plants from diverse taxa and locations relative to neighbouring autotrophic plants.All green pyroloid and one orchid species showed significant N-15 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 C-13 and N-15 enrichment of obligate myco-heterotrophic plants relative to accompanying autotrophic plants turned out as a fairly constant parameter.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER47684
Institutions of the University: Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 07 Aug 2015 06:59
Last Modified: 07 Aug 2015 06:59
URI: https://eref.uni-bayreuth.de/id/eprint/17786