caa a22 4500 397552858 CHVBK 20180308164755.0 cr unu---uuuuu 161202e199610 xx s 000 0 eng 10.1111/j.1574-6941.1996.tb00340.x doi (NATIONALLICENCE)oxford-10.1111/j.1574-6941.1996.tb00340.x Sulfide-induced dissimilatory nitrate reduction to ammonia in anaerobic freshwater sediments [Elektronische Daten] [R.C. Brunet, L.J. Garcia-Gil] Different reduced sulfur compounds (H2S, FeS, S2O32−) were tested as electron donors for dissimilatory nitrate reduction in nitrate-amended sediment slurries. Only in the free sulfide-enriched slurries was nitrate appreciably reduced to ammonia (), with concomitant oxidation of sulfide to S0 (). The initial concentration of free sulfide appears as a factor determining the type of nitrate reduction. At extremely low concentrations of free S2− (metal sulfides) nitrate was reduced via denitrification whereas at higher S2− concentrations, dissimilatory nitrate reduction to ammonia (DNRA) and incomplete denitrification to gaseous nitrogen oxides took place. Sulfide inhibition of NO- and N2O- reductases is proposed as being responsible for the driving part of the electron flow from S2− to NH4+. © 1996 Federation of European Microbiological Societies. Published by Elsevier Science B.V. Sediment nationallicence Denitrification nationallicence Dissimilatory nitrate reduction to ammonia nationallicence Sulfide nationallicence Ferrous sulfide nationallicence Thiosulfate nationallicence Brunet R.C. Institute of Aquatic Ecology, University of Girona, Hospital 6, E-17071 Girona, Spain aut Garcia-Gil L.J. Institute of Aquatic Ecology, University of Girona, Hospital 6, E-17071 Girona, Spain aut FEMS Microbiology Ecology Blackwell Publishing Ltd 21/2(1996-10), 131-138 21:2<131 1996 21 femsec https://doi.org/10.1111/j.1574-6941.1996.tb00340.x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1111/j.1574-6941.1996.tb00340.x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brunet R.C. Institute of Aquatic Ecology, University of Girona, Hospital 6, E-17071 Girona, Spain aut NATIONALLICENCE 700 1- Garcia-Gil L.J. Institute of Aquatic Ecology, University of Girona, Hospital 6, E-17071 Girona, Spain aut NATIONALLICENCE 773 0- FEMS Microbiology Ecology Blackwell Publishing Ltd 21/2(1996-10), 131-138 21:2<131 1996 21 femsec Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford