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The ectomycorrhizal specialist orchid Corallorhiza trifida is a partial myco-heterotroph

Title data

Preiß, Katja ; Meyer, Cornelia ; Gebauer, Gerhard:
The ectomycorrhizal specialist orchid Corallorhiza trifida is a partial myco-heterotroph.
In: New Phytologist. Vol. 178 (2008) Issue 2 . - pp. 395-400.
ISSN 1469-8137
DOI: https://doi.org/10.1111/j.1469-8137.2007.02362.x

Abstract in another language

The leafless, circumboreal orchid Corallorhiza trifida is often assumed to be fully myco-heterotrophic despite contrary evidence concerning its ability to photosynthesize. Here, its level of myco-heterotrophy is assessed by analysing the natural abundance of the stable nitrogen and carbon isotopes 15N and 13C, respectively.The mycorrhizal associates and chlorophyll contents of C. trifida were investigated and the C and N isotope signatures of nine C. trifida individuals from Central Europe were compared with those of neighbouring obligate autotrophic and myco-heterotrophic reference plants.The results show that C. trifida only gains c. 52 ± 5% of its total nitrogen and 77 ± 10% of the carbon derived from fungi even though it has been shown to specialize on one specific complex of ectomycorrhizal fungi similar to fully myco-heterotrophic orchids. Concurrently, compared with other Corallorhiza species, C. trifida contains a remarkable amount of chlorophyll.Since C. trifida is able to supply significant proportions of its nitrogen and carbon demands through the same processes as autotrophic plants, this species should be referred to as partially myco-heterotrophic.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER55829
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/17762