The contribution of Rhizobium meliloti to soil denitrification |
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Authors: | J. I. Garcia-Plazaola J. M. Becerril C. Arrese-Igor C. Gonzalez-Murua P. M. Aparicio-Tejo |
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Affiliation: | (1) Department of Plant Biology and Ecology, University of the Basque Country/EHU, Aptd. 644, 48080 Bilbao, Spain;(2) Department of Agronomy, Public University of Navarra, Campus de Arrosadía, 31006 Pamplona, Spain |
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Abstract: | The ability of Rhizobium meliloti cells to denitrify in soils under several conditions was tested. All the strains tested were able to remove large amounts of N-NO3- from soils. Both water filled pore space above 36% and temperatures above 20°C greatly increased nitrogen losses. However, even with optimal conditions for denitrification and the highest rhizobial populations found in agricultural soils, the contribution of Rhizobium to the total denitrification was virtually negligible as compared to other soil microorganisms.To whom correspondence should be addressed |
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Keywords: | anaerobic soil denitrification nitrous oxide respiration Rhizobium meliloti |
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