Evaluation of nitrous oxide emission by soybean inoculated with Bradyrhizobium strains commonly used as inoculants in South America

Obando, Melissa; Cristian, Antonelli; Sheila, Casanave; Maguire, Vanina G; Torres, Daniela; Gabriela, Pérez; Matías, Bailleres; Donadío, Florencia; Cecilia, Creus; Cecilia, Videla; Mariana, Puente; Jerri, Zilli; Bruno, Alves; Oscar, Ruiz; Eulogio, Bedmar; Cassán, Fabricio

doi:10.1007/s11104-021-05242-y

Cited by 7 publications

(5 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A possible strategy involving soybean to reduce N 2 O emissions during crop maturity has been proposed by Akiyama et al (2016) and Obando et al (2019) who found that N 2 O emissions during soybean production could be reduced using an inoculant with the nosZ gene that leads to the formation of N 2 as the main product of denitrification. A field experiment with soybean inoculated with strains of Bradyrhizobium containing the nosZ gene reduced N 2 O emissions but resulted in lower soybean crop yields (Obando et al, 2022). Another alternative for reducing N 2 O emissions might be sowing the SC before soybean maturity, pre-harvest so that the SC can capture excess soil nitrogen from the decomposition of soybean nodules and residues.…”

Section: Discussionmentioning

confidence: 99%

Are service crops an alternative for mitigating N₂O emissions in soybean crops in the Argentinian Pampas?

et al. 2023

View full text Add to dashboard Cite

Service crops (or cover crops) play an important role in simplified agricultural systems. Service crops reduce agricultural external inputs and increase ecosystem services but their ability to mitigate nitrous oxide (N2O) emissions is still uncertain. The main objective of this study was to evaluate N2O emissions in soybean–soybean (Glycine max [L.] Merr) rotations that included different service crops. Treatments included continuous soybean with winter fallow and soybean with three service crops: oat (Avena sativa L.), vetch (Vicia villosa Roth.), and a mixture of oat and vetch in a randomized complete block design. Service crops were sown 2 months after soybean harvest and were terminated 2 months before soybean planting. Nitrous oxide emissions were determined during the fourth year of the field experiment. We found that service crops did not significantly affect overall mean N2O emission rates, with mean emission rates from the fallow, oat, vetch, and oat‐vetch treatments of 1.82 ± 0.35, 1.95 ± 0.34, 2.71 ± 0.43, and 2.42 ± 0.42 kg N2O‐N ha−1 per year, respectively. Service crops with low C/N ratios (vetch and oat‐vetch mixtures) significantly increased N2O emissions in spring, after their termination. Overall, soil inorganic N content (NO3− or NH4+) was the main driver that explained the N2O emissions from different treatments, whereas water‐filled pore space controlled the temporal variability of emissions. Our results suggest that service crops with a very short growing season may increase soil N availability for cash crops, but do not reduce N2O emissions due to long periods of high N availability without crops.

show abstract

Section: Discussionmentioning

confidence: 99%

Are service crops an alternative for mitigating N₂O emissions in soybean crops in the Argentinian Pampas?

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Moreover, N 2 O fluxes from soybean fields have been mitigated by inoculation with B. diazoefficiens mutants with high N 2 O reductase activity ( nos ++ mutants) 11 . The utility of B. diazoefficiens in N 2 O mitigation has also been verified in soybean ecosystems in Japan 12 , France 13 , and South America 14 .…”

Section: Introductionmentioning

confidence: 90%

“…* email: yshimoda@affrc.go.jp; kiwamu.minamisawa.e6@tohoku.ac.jp high N 2 O reductase activity (nos ++ mutants) 11 . The utility of B. diazoefficiens in N 2 O mitigation has also been verified in soybean ecosystems in Japan 12 , France 13 , and South America 14 .…”

mentioning

confidence: 90%

Bradyrhizobium ottawaense efficiently reduces nitrous oxide through high nosZ gene expression

Wasai-Hara,

Itakura,

Fernandes Siqueira

et al. 2023

Sci Rep

View full text Add to dashboard Cite

N2O is an important greenhouse gas influencing global warming, and agricultural land is the predominant (anthropogenic) source of N2O emissions. Here, we report the high N2O-reducing activity of Bradyrhizobium ottawaense, suggesting the potential for efficiently mitigating N2O emission from agricultural lands. Among the 15 B. ottawaense isolates examined, the N2O-reducing activities of most (13) strains were approximately five-fold higher than that of Bradyrhizobium diazoefficiens USDA110T under anaerobic conditions. This robust N2O-reducing activity of B. ottawaense was confirmed by N2O reductase (NosZ) protein levels and by mitigation of N2O emitted by nodule decomposition in laboratory system. While the NosZ of B. ottawaense and B. diazoefficiens showed high homology, nosZ gene expression in B. ottawaense was over 150-fold higher than that in B. diazoefficiens USDA110T, suggesting the high N2O-reducing activity of B. ottawaense is achieved by high nos expression. Furthermore, we examined the nos operon transcription start sites and found that, unlike B. diazoefficiens, B. ottawaense has two transcription start sites under N2O-respiring conditions, which may contribute to the high nosZ expression. Our study indicates the potential of B. ottawaense for effective N2O reduction and unique regulation of nos gene expression towards the high performance of N2O mitigation in the soil.

show abstract

“…A common example of the bacteria is Bradyrhizobium japonicum mostly employed as a result of its effectiveness and is the leading bacterium in the market (Krutyakov et al, 2022). Some studies have presented how Bradyrhizobium has been used in the USA and Argentina and showed how the production of soybeans was increased as a result of microbial inoculation (Liebrenz et al, 2022;Melissa et al, 2022;Fadel Sartori et al, 2023). Other microbes reportedly used are Azospirillum spp., which were introduced to crop plants through the co-inoculation method.…”

Section: Nitrogen-fixing Bacteriamentioning

confidence: 99%

The potential of biostimulants on soil microbial community: a review

Adedayo,

Babalola

2023

Front. Ind. Microbiol.

View full text Add to dashboard Cite

To improve agricultural sustainability, an agriculturally productive system is required to maintain soil fertility and reduce the loss of soil biodiversity. One of the modern technologies employs microbial biostimulants that create abundant agricultural yield with high nutritional values, controlling disadvantages obtained from environmental changes. This review aimed to provide knowledge on the effects of biostimulants on microbial communities’ potential to promote agricultural production. Plant biostimulants are novel materials applied in the farming sector nowadays to improve crop yield and commonly occur in plant seeds and as an alternative to chemical derivative application on crop plants. Microbial biostimulants function as biological inputs to increase crop production and reduce the decomposition of soil. In conclusion, the application of biostimulants necessitates the accomplishment of an absolute choice of beneficial microbes as well as the potential to combat problems that will be encountered later in the agricultural sector.

show abstract

Evaluation of nitrous oxide emission by soybean inoculated with Bradyrhizobium strains commonly used as inoculants in South America

Cited by 7 publications

References 77 publications

Are service crops an alternative for mitigating N₂O emissions in soybean crops in the Argentinian Pampas?

Are service crops an alternative for mitigating N₂O emissions in soybean crops in the Argentinian Pampas?

Bradyrhizobium ottawaense efficiently reduces nitrous oxide through high nosZ gene expression

The potential of biostimulants on soil microbial community: a review

Contact Info

Product

Resources

About

Evaluation of nitrous oxide emission by soybean inoculated with Bradyrhizobium strains commonly used as inoculants in South America

Cited by 7 publications

References 77 publications

Are service crops an alternative for mitigating N2O emissions in soybean crops in the Argentinian Pampas?

Are service crops an alternative for mitigating N2O emissions in soybean crops in the Argentinian Pampas?

Bradyrhizobium ottawaense efficiently reduces nitrous oxide through high nosZ gene expression

The potential of biostimulants on soil microbial community: a review

Contact Info

Product

Resources

About

Are service crops an alternative for mitigating N₂O emissions in soybean crops in the Argentinian Pampas?

Are service crops an alternative for mitigating N₂O emissions in soybean crops in the Argentinian Pampas?