Fungal contribution to nitrous oxide emissions from cattle impacted soils

0394888 - BC 2014 RIV GB eng J - Článek v odborném periodiku
Jirout, Jiří - Šimek, Miloslav - Elhottová, Dana
Fungal contribution to nitrous oxide emissions from cattle impacted soils.
Chemosphere. Roč. 90, č. 2 (2013), s. 565-572. ISSN 0045-6535. E-ISSN 1879-1298
Grant CEP: GA ČR GPP504/12/P752; GA MŠMT LC06066
Grant ostatní: GAJU(CZ) 04-142/2010/P
Výzkumný záměr: CEZ:AV0Z60660521
Institucionální podpora: RVO:60077344
Klíčová slova: nitrous oxide * soil fungi * upland pasture * cattle * outdoor husbandry
Kód oboru RIV: EE - Mikrobiologie, virologie
Impakt faktor: 3.499, rok: 2013

Microscopic soil fungi isolated from arable, grassland and forest soils have been suggested as producers of nitrous oxide (N₂O). The aim of this work was to screen the capabilities for N₂O production of microscopic fungi originating in the pasture soils of a cattle overwintering area with three levels of cattle impact intensity. In total, 36 fungal species from 11 genera were isolated during a 2-year study, and production of N₂O under laboratory conditions was confirmed in 23 species (64%). Species belonging to the genera Fusarium, Penicillium, Monographella, Acremonium, Gibberella, Eurotium, Pseudallescheria were found to be the most potent N₂O-producers. Different N₂O production patterns and wide variations in production rates, ranging from 1 to 150 µg N₂O-N d^-1, were observed, resulting in the transformation of 0.2-18.4% of the initial NO₂^--N present in the cultivation medium. The data revealed distinct soil fungal communities in the different sections of the cattle overwintering area, and indicate a significant effect of cattle overwintering on the composition of soil fungal consortia. These observations confirm the importance of soil fungi in total N₂O fluxes from grazed grassland ecosystems.
Trvalý link: http://hdl.handle.net/11104/0226375