Biological nitrification inhibition by rice root exudates in two different soils of Uruguay
Rice root exudates can control nitrification by releasing biological nitrification inhibitors (BNIs), reducing nitrogen losses in agricultural soils. However, the inhibitory effect on nitrification and the abundance of ammonia oxidisers in different soil types remain unclear. Two temperate paddy soi...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Informa UK Limited
2021
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/116005 |
| _version_ | 1855515667302711296 |
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| author | Illarze, Gabriela Arango, Jacobo Nuñez, Jonathan Irisarri, Pilar |
| author_browse | Arango, Jacobo Illarze, Gabriela Irisarri, Pilar Nuñez, Jonathan |
| author_facet | Illarze, Gabriela Arango, Jacobo Nuñez, Jonathan Irisarri, Pilar |
| author_sort | Illarze, Gabriela |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rice root exudates can control nitrification by releasing biological nitrification inhibitors (BNIs), reducing nitrogen losses in agricultural soils. However, the inhibitory effect on nitrification and the abundance of ammonia oxidisers in different soil types remain unclear. Two temperate paddy soils with different organic matter contents were collected to investigate the impact on nitrification rates of two rice cultivar root exudates, El Paso 144 (O. sativa ssp. indica) and Tacuarí (O. sativa spp. japonica). Root exudates were extracted before the tillering growth stage, and their BNI potential was evaluated in a bioassay with luminescent Nitrosomonas europaea and in a 12-day soil microcosm incubation. While exudates from Tacuarí showed stronger BNI activity in the bioassay, its nitrification inhibition in both soils was similar to that of DCD. El Paso did not show BNI activity in Salto whose organic matter content was higher. The abundance of ammonia oxidisers was not affected by root exudates or DCD, but only ammonia-oxidising bacteria had a significant positive relationship with soil nitrate. Our results demonstrated that although the bioassay showed high BNI activity, its expression in soils varied depending on the rice cultivar and the type of soil, particularly with its organic matter content. |
| format | Journal Article |
| id | CGSpace116005 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace1160052025-11-11T17:41:40Z Biological nitrification inhibition by rice root exudates in two different soils of Uruguay Illarze, Gabriela Arango, Jacobo Nuñez, Jonathan Irisarri, Pilar nitrification inhibitors ammonia oxidants soil analysis root exudates inhibidores de la nitrificación amoníaco oxidantes análisis del suelo exudados radiculares Rice root exudates can control nitrification by releasing biological nitrification inhibitors (BNIs), reducing nitrogen losses in agricultural soils. However, the inhibitory effect on nitrification and the abundance of ammonia oxidisers in different soil types remain unclear. Two temperate paddy soils with different organic matter contents were collected to investigate the impact on nitrification rates of two rice cultivar root exudates, El Paso 144 (O. sativa ssp. indica) and Tacuarí (O. sativa spp. japonica). Root exudates were extracted before the tillering growth stage, and their BNI potential was evaluated in a bioassay with luminescent Nitrosomonas europaea and in a 12-day soil microcosm incubation. While exudates from Tacuarí showed stronger BNI activity in the bioassay, its nitrification inhibition in both soils was similar to that of DCD. El Paso did not show BNI activity in Salto whose organic matter content was higher. The abundance of ammonia oxidisers was not affected by root exudates or DCD, but only ammonia-oxidising bacteria had a significant positive relationship with soil nitrate. Our results demonstrated that although the bioassay showed high BNI activity, its expression in soils varied depending on the rice cultivar and the type of soil, particularly with its organic matter content. 2021-08-31 2021-11-11T15:04:15Z 2021-11-11T15:04:15Z Journal Article https://hdl.handle.net/10568/116005 en Open Access application/pdf Informa UK Limited Illarze, G.; Arango, J.; Nuñez, J.; Irisarri, P. (2021) Biological nitrification inhibition by rice root exudates in two different soils of Uruguay. Acta Agriculturae Scandinavica, Section B — Soil & Plant Science, Online first paper (16 Jul 2021). ISSN: 0906-4710 |
| spellingShingle | nitrification inhibitors ammonia oxidants soil analysis root exudates inhibidores de la nitrificación amoníaco oxidantes análisis del suelo exudados radiculares Illarze, Gabriela Arango, Jacobo Nuñez, Jonathan Irisarri, Pilar Biological nitrification inhibition by rice root exudates in two different soils of Uruguay |
| title | Biological nitrification inhibition by rice root exudates in two different soils of Uruguay |
| title_full | Biological nitrification inhibition by rice root exudates in two different soils of Uruguay |
| title_fullStr | Biological nitrification inhibition by rice root exudates in two different soils of Uruguay |
| title_full_unstemmed | Biological nitrification inhibition by rice root exudates in two different soils of Uruguay |
| title_short | Biological nitrification inhibition by rice root exudates in two different soils of Uruguay |
| title_sort | biological nitrification inhibition by rice root exudates in two different soils of uruguay |
| topic | nitrification inhibitors ammonia oxidants soil analysis root exudates inhibidores de la nitrificación amoníaco oxidantes análisis del suelo exudados radiculares |
| url | https://hdl.handle.net/10568/116005 |
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