Monitoring CO2 emissions to gain a dynamic view of carbon allocation to arbuscular mycorrhizal fungi

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F17%3A00482810" target="_blank" >RIV/61388971:_____/17:00482810 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/17:00480661 RIV/00216208:11310/17:10372921

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00572-016-0731-2" target="_blank" >http://dx.doi.org/10.1007/s00572-016-0731-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00572-016-0731-2" target="_blank" >10.1007/s00572-016-0731-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Monitoring CO2 emissions to gain a dynamic view of carbon allocation to arbuscular mycorrhizal fungi

Popis výsledku v původním jazyce

Quantification of carbon (C) fluxes in mycorrhizal plants is one of the important yet little explored tasks of mycorrhizal physiology and ecology. (CO2)-C-13 pulse-chase labelling experiments are increasingly being used to track the fate of C in these plant-microbial symbioses. Nevertheless, continuous monitoring of both the below- and aboveground CO2 emissions remains a challenge, although it is necessary to establish the full C budget of mycorrhizal plants. Here, a novel CO2 collection system is presented which allows assessment of gaseous CO2 emissions (including isotopic composition of their C) from both belowground and shoot compartments. This system then is used to quantify the allocation of recently fixed C in mycorrhizal versus nonmycorrhizal Medicago truncatula plants with comparable biomass and mineral nutrition. Using this system, we confirmed substantially greater belowground C drain in mycorrhizal versus nonmycorrhizal plants, with the belowground CO2 emissions showing large variation because of fluctuating environmental conditions in the glasshouse. Based on the assembled C-13 budget, the C allocation to the mycorrhizal fungus was between 2.3% (increased C-13 allocation to mycorrhizal substrate) and 2.9% (reduction of C-13 allocation to mycorrhizal shoots) of the plant gross photosynthetic production. Although the C allocation to shoot respiration (measured during one night only) did not differ between the mycorrhizal and nonmycorrhizal plants under our experimental conditions, it presented a substantial part (similar to 10%) of the plant C budget, comparable to the amount of CO2 released belowground. These results advocate quantification of both above- and belowground CO2 emissions in future studies.

Název v anglickém jazyce

Monitoring CO2 emissions to gain a dynamic view of carbon allocation to arbuscular mycorrhizal fungi

Popis výsledku anglicky

Quantification of carbon (C) fluxes in mycorrhizal plants is one of the important yet little explored tasks of mycorrhizal physiology and ecology. (CO2)-C-13 pulse-chase labelling experiments are increasingly being used to track the fate of C in these plant-microbial symbioses. Nevertheless, continuous monitoring of both the below- and aboveground CO2 emissions remains a challenge, although it is necessary to establish the full C budget of mycorrhizal plants. Here, a novel CO2 collection system is presented which allows assessment of gaseous CO2 emissions (including isotopic composition of their C) from both belowground and shoot compartments. This system then is used to quantify the allocation of recently fixed C in mycorrhizal versus nonmycorrhizal Medicago truncatula plants with comparable biomass and mineral nutrition. Using this system, we confirmed substantially greater belowground C drain in mycorrhizal versus nonmycorrhizal plants, with the belowground CO2 emissions showing large variation because of fluctuating environmental conditions in the glasshouse. Based on the assembled C-13 budget, the C allocation to the mycorrhizal fungus was between 2.3% (increased C-13 allocation to mycorrhizal substrate) and 2.9% (reduction of C-13 allocation to mycorrhizal shoots) of the plant gross photosynthetic production. Although the C allocation to shoot respiration (measured during one night only) did not differ between the mycorrhizal and nonmycorrhizal plants under our experimental conditions, it presented a substantial part (similar to 10%) of the plant C budget, comparable to the amount of CO2 released belowground. These results advocate quantification of both above- and belowground CO2 emissions in future studies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10606 - Microbiology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Mycorrhiza

ISSN

0940-6360

e-ISSN

—

Svazek periodika

27

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

17

Strana od-do

35-51

Kód UT WoS článku

000391391300004

EID výsledku v databázi Scopus

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