Photosynthesis in perennial mixotrophic Epipactis spp. (Orchidaceae) contributes more to shoot and fruit biomass than to hypogeous survival

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F14%3A43887146" target="_blank" >RIV/60076658:12310/14:43887146 - isvavai.cz</a>
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12274/pdf" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12274/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/1365-2745.12274" target="_blank" >10.1111/1365-2745.12274</a>

Result language
angličtina
Original language name
Photosynthesis in perennial mixotrophic Epipactis spp. (Orchidaceae) contributes more to shoot and fruit biomass than to hypogeous survival
Original language description
We investigated C sources and allocation in mixotrophic perennial orchids from the genus Epipactis. Based on the assumption that fungal biomass has high delta C-13 and N content, while photosynthetic biomass has lower delta C-13 and N content, we indirectly estimated the respective contributions of these two resources to various organs, at various times over the growth season. Fully heterotrophic and fully autotrophic plants from the same sites were used as references for delta C-13 and N content of biomass purely issuing from fungi and photosynthesis, respectively. In four investigated populations, the biomass shifted from fully heterotrophic in young spring shoots to 80-100% autotrophic in leaves and fruits at fruiting time, suggesting that photosynthesis supported mostly fruiting costs. In addition, fungal colonization decreased in roots over this period. We propose a falsifiable model of C resource allocation in mixotrophic orchids, where mycorrhizal fungi mostly support below-grou
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EH - Ecology - communities
OECD FORD branch
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Project
<a href="/en/project/GA14-21432S" target="_blank" >GA14-21432S: Untangling factors underlying distribution of forest mycoheterotrophic species: combining theoretical and experimental approaches</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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