Nitrous oxide release by soil fungi |
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| Affiliation: | 1. Department of Botany, Faculty of Science, Palacký University in Olomouc, Olomouc, Czech Republic;4. Department of Biochemistry, Faculty of Science, Palacký University in Olomouc, Olomouc, Czech Republic;1. Athlone Institute of Technology, Materials Research Institute, Athlone, Co. Westmeath, Ireland;2. Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre – UFCSPA, Porto Alegre, Rio Grande do Sul, Brazil;3. Athlone Institute of Technology, Biosciences Research Institute, Athlone, Co. Westmeath, Ireland |
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| Abstract: | Fusarium oxysporum and F. solani reduced nitrite in growing cultures and in resting cell experiments at low oxygen tensions with the simultaneous release of nitrous oxide. Nitrate, however, was not transformed during growth under aerobic or partially anaerobic conditions. No nitrous oxide was generated from nitrate, ammonium or hydroxylamine by resting cells. There are no plausible explanations for the physiological reaction involved in the release of nitrous oxide, but the finding that soil fungi are able to volatilize nitrogen implies a new factor in the disappearance of nitrogen from soil. |
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