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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-21432S" target="_blank" >GA14-21432S: Rozklíčování faktorů určujících rozšíření lesních mykoheteretrofních rostlin: kombinace teoretického a experimentálního přístupu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Ecology

ISSN

0022-0477

e-ISSN

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Svazek periodika

102

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1183-1194

Kód UT WoS článku

000340681300009

EID výsledku v databázi Scopus

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