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The degree of mycoheterotrophic carbon gain in green, variegated and vegetative albino individuals of Cephalanthera damasonium is related to leaf chlorophyll concentrations

Title data

Stöckel, Marcus ; Meyer, Cornelia ; Gebauer, Gerhard:
The degree of mycoheterotrophic carbon gain in green, variegated and vegetative albino individuals of Cephalanthera damasonium is related to leaf chlorophyll concentrations.
In: New Phytologist. Vol. 189 (2011) Issue 3 . - pp. 790-796.
ISSN 1469-8137
DOI: https://doi.org/10.1111/j.1469-8137.2010.03510.x

Abstract in another language

• Achlorophyllous variants of some forest orchids are known to reach almost the same size as their green forms. These vegetative albino forms cover their entire carbon (C) demand through fungi that simultaneously form ectomycorrhizae with trees, while green variants partially draw on C from photosynthesis and C from fungal hosts. Here, we investigate whether the amount of C derived from either source is proportional to leaf chlorophyll concentration. The discovery of two Cephalanthera damasonium populations with variegated leaves enabled a continuous bridging of leaf chlorophyll concentrations between green and albino forms. • Leaves of 27 green, variegated and albino individuals of C. damasonium were compared for chlorophyll concentrations, C sources (as characterized by 13C abundances) and total C and nitrogen (N) concentrations. • We found a linear relationship between leaf chlorophyll concentrations and the proportional reliance on fungi as a C source. Furthermore, we show that the shift in C gain through mycoheterotrophic means significantly changes leaf total C and N concentrations. • Our results document that partial mycoheterotrophy in C. damasonium is not a static nutritional mode but a flexible mechanism related inter alia to leaf chlorophyll concentrations. The change in proportional reliance on fungi as a C source affects leaf chemical composition.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER88112
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: 29 Jul 2015 05:53
Last Modified: 29 Jul 2015 05:53
URI: https://eref.uni-bayreuth.de/id/eprint/17354