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Monitoring CO2 emissions to gain a dynamic view of carbon allocation to arbuscular mycorrhizal fungi
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SYSNO ASEP 0482810 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Monitoring CO2 emissions to gain a dynamic view of carbon allocation to arbuscular mycorrhizal fungi Tvůrce(i) Slavíková, Renata (MBU-M) RID
Püschel, David (MBU-M) RID, ORCID
Janoušková, Martina (MBU-M) RID, ORCID
Hujslová, Martina (MBU-M) RID, ORCID
Konvalinková, Tereza (MBU-M) RID, ORCID
Gryndlerová, Hana (MBU-M) ORCID
Gryndler, Milan (MBU-M) RID, ORCID
Weiser, M. (CZ)
Jansa, Jan (MBU-M) RID, ORCIDZdroj.dok. Mycorrhiza. - : Springer - ISSN 0940-6360
Roč. 27, č. 1 (2017), s. 35-51Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Belowground carbon (C) allocation ; C-13 isotope labelling ; Glomeromycota Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Microbiology CEP LK11224 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA14-19191S GA ČR - Grantová agentura ČR Fellowship J. E. Purkyně GA AV ČR - Akademie věd Institucionální podpora MBU-M - RVO:61388971 UT WOS 000391391300004 DOI 10.1007/s00572-016-0731-2 Anotace 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. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2018
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