Nutritional and environmental effects on biological nitrogen fixation in soybean: a meta-analysis
Biological N2 fixation (BNF) and mineral soil absorption are complementary N sources for soybean growth. BNF is sensitive to nutrient and environmental conditions, though a comprehensive synthesis of the studies underlying these conclusions is currently lacking. Our objective was to conduct a meta-a...
| Autores principales: | , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Elsevier
2019
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| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0378429018316757 http://hdl.handle.net/20.500.12123/5384 https://doi.org/10.1016/j.fcr.2019.05.006 |
| _version_ | 1855483612740190208 |
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| author | Santachiara, Gabriel Salvagiotti, Fernando Rotundo, José Luis |
| author_browse | Rotundo, José Luis Salvagiotti, Fernando Santachiara, Gabriel |
| author_facet | Santachiara, Gabriel Salvagiotti, Fernando Rotundo, José Luis |
| author_sort | Santachiara, Gabriel |
| collection | INTA Digital |
| description | Biological N2 fixation (BNF) and mineral soil absorption are complementary N sources for soybean growth. BNF is sensitive to nutrient and environmental conditions, though a comprehensive synthesis of the studies underlying these conclusions is currently lacking. Our objective was to conduct a meta-analysis of nutrient and environmental effects on BFN. Articles reporting manipulative treatments and BNF estimations were compiled, and data and metadata were extracted. N fertilization reduced BNF ∼70% relative to the unfertilized control in greenhouse experiments and ∼44% in field experiments. This effect was higher for vegetative than for reproductive stage applications. Fertilization with other nutrients stimulated BNF relative to the unfertilized treatments. Water stress reduced BNF 40% relative to the unstressed control. The negative impact of water stress was larger when stress was applied at vegetative (-70%) compared to reproductive (-30%) stages. Flooding reduced BNF by 40% relative to the non-flooded control with highest effect when applied during vegetative stage (-82%). Increased temperature reduced BNF nitrogenase activity. Carbon dioxide enrichment has a stimulatory effect on BNF. With the exception of N fertilization, soybean and Rhizobium fitness showed a high positive correlation across nutrients and environmental factors. This work summarizes for the first time the impact and relative response of BNF to different nutrient and environmental factors. Results showed an initial critical stage (i.e. vegetative stage) for BNF that is common to most environmental factors negatively affecting BNF. This suggests that common strategies might exist to increase BNF that are independent of the specific identity of the stressor. Also, the positive correlation between host and Rhizobium fitness suggest that strategies to increase BNF potential are the same that those required to increase crop performance. We observed publication bias for some variables, suggesting that effect sizes might be inflated compared to true effect sizes. The only way to solve this problem is to find venues for publication of no significant results when sound experimental approaches and reasonable statistical power can be proved. |
| format | Artículo |
| id | INTA5384 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA53842019-06-28T11:29:46Z Nutritional and environmental effects on biological nitrogen fixation in soybean: a meta-analysis Santachiara, Gabriel Salvagiotti, Fernando Rotundo, José Luis Soja Fijación Biológica del Nitrógeno Medio Ambiente Rhizobium Nutrientes Aplicación de Abonos Soybeans Biological Nitrogen Fixation Environment Nutrients Fertilizer Application Biological N2 fixation (BNF) and mineral soil absorption are complementary N sources for soybean growth. BNF is sensitive to nutrient and environmental conditions, though a comprehensive synthesis of the studies underlying these conclusions is currently lacking. Our objective was to conduct a meta-analysis of nutrient and environmental effects on BFN. Articles reporting manipulative treatments and BNF estimations were compiled, and data and metadata were extracted. N fertilization reduced BNF ∼70% relative to the unfertilized control in greenhouse experiments and ∼44% in field experiments. This effect was higher for vegetative than for reproductive stage applications. Fertilization with other nutrients stimulated BNF relative to the unfertilized treatments. Water stress reduced BNF 40% relative to the unstressed control. The negative impact of water stress was larger when stress was applied at vegetative (-70%) compared to reproductive (-30%) stages. Flooding reduced BNF by 40% relative to the non-flooded control with highest effect when applied during vegetative stage (-82%). Increased temperature reduced BNF nitrogenase activity. Carbon dioxide enrichment has a stimulatory effect on BNF. With the exception of N fertilization, soybean and Rhizobium fitness showed a high positive correlation across nutrients and environmental factors. This work summarizes for the first time the impact and relative response of BNF to different nutrient and environmental factors. Results showed an initial critical stage (i.e. vegetative stage) for BNF that is common to most environmental factors negatively affecting BNF. This suggests that common strategies might exist to increase BNF that are independent of the specific identity of the stressor. Also, the positive correlation between host and Rhizobium fitness suggest that strategies to increase BNF potential are the same that those required to increase crop performance. We observed publication bias for some variables, suggesting that effect sizes might be inflated compared to true effect sizes. The only way to solve this problem is to find venues for publication of no significant results when sound experimental approaches and reasonable statistical power can be proved. EEA Oliveros Fil: Santachiara, Gabriel. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina. Fil: Salvagiotti, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; Argentina Fil: Rotundo, José Luis. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina. 2019-06-28T11:27:33Z 2019-06-28T11:27:33Z 2019-07 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0378429018316757 http://hdl.handle.net/20.500.12123/5384 0378-4290 https://doi.org/10.1016/j.fcr.2019.05.006 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Field Crops Research 240 : 106-115 (July 2019) |
| spellingShingle | Soja Fijación Biológica del Nitrógeno Medio Ambiente Rhizobium Nutrientes Aplicación de Abonos Soybeans Biological Nitrogen Fixation Environment Nutrients Fertilizer Application Santachiara, Gabriel Salvagiotti, Fernando Rotundo, José Luis Nutritional and environmental effects on biological nitrogen fixation in soybean: a meta-analysis |
| title | Nutritional and environmental effects on biological nitrogen fixation in soybean: a meta-analysis |
| title_full | Nutritional and environmental effects on biological nitrogen fixation in soybean: a meta-analysis |
| title_fullStr | Nutritional and environmental effects on biological nitrogen fixation in soybean: a meta-analysis |
| title_full_unstemmed | Nutritional and environmental effects on biological nitrogen fixation in soybean: a meta-analysis |
| title_short | Nutritional and environmental effects on biological nitrogen fixation in soybean: a meta-analysis |
| title_sort | nutritional and environmental effects on biological nitrogen fixation in soybean a meta analysis |
| topic | Soja Fijación Biológica del Nitrógeno Medio Ambiente Rhizobium Nutrientes Aplicación de Abonos Soybeans Biological Nitrogen Fixation Environment Nutrients Fertilizer Application |
| url | https://www.sciencedirect.com/science/article/pii/S0378429018316757 http://hdl.handle.net/20.500.12123/5384 https://doi.org/10.1016/j.fcr.2019.05.006 |
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