Will crops with biological nitrification inhibition capacity be favored under future atmospheric CO2?

Vega-Mas, Izargi; Ascencio-Medina, Estefanía; Bozal-Leorri, Adrián; González-Murua, Carmen; Marino, Daniel; González-Moro, María Begoña

doi:10.3389/fpls.2023.1245427

Cited by 1 publication

(1 citation statement)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We, therefore, encourage more experiments examining the role of plant‐derived metabolites in different soil types and under varying N fertilization regimes and in different crop systems. Climate factors, such as CO 2 concentration, temperature, and rainfall, should also be considered, for example, plant BNI synthesis may be promoted under predicted climate‐change scenarios, as elevated eCO 2 can boost both N assimilation and production of C‐rich secondary metabolites (Vega‐Mas et al., 2023), thereby affecting soil nitrification and N 2 O emissions. Despite the current limitations, we here demonstrate that plant secondary metabolites can be considered an effective approach toward a reduction of N 2 O emissions and an improvement in environmental sustainability.…”

Section: Discussionmentioning

confidence: 99%

Biological mitigation of soil nitrous oxide emissions by plant metabolites

Lu,

Wang,

Min

et al. 2024

Global Change Biology

View full text Add to dashboard Cite

Plant metabolites significantly affect soil nitrogen (N) cycling, but their influence on nitrous oxide (N2O) emissions has not been quantitatively analyzed on a global scale. We conduct a comprehensive meta‐analysis of 173 observations from 42 articles to evaluate global patterns of and principal factors controlling N2O emissions in the presence of root exudates and extracts. Overall, plant metabolites promoted soil N2O emissions by about 10%. However, the effects of plant metabolites on N2O emissions from soils varied with experimental conditions and properties of both metabolites and soils. Primary metabolites, such as sugars, amino acids, and organic acids, strongly stimulated soil N2O emissions, by an average of 79%, while secondary metabolites, such as phenolics, terpenoids, and flavonoids, often characterized as both biological nitrification inhibitors (BNIs) and biological denitrification inhibitors (BDIs), reduced soil N2O emissions by an average of 41%. The emission mitigation effects of BNIs/BDIs were closely associated with soil texture and pH, increasing with increasing soil clay content and soil pH on acidic and neutral soils, and with decreasing soil pH on alkaline soils. We furthermore present soil incubation experiments that show that three secondary metabolite types act as BNIs to reduce N2O emissions by 32%–45%, while three primary metabolite classes possess a stimulatory effect of 56%–63%, confirming the results of the meta‐analysis. Our results highlight the potential role and application range of specific secondary metabolites in biomitigation of global N2O emissions and provide new biological parameters for N2O emission models that should help improve the accuracy of model predictions.

show abstract

Section: Discussionmentioning

confidence: 99%