Isolation and Characterization of a N2O-Reducing Rhizobacterium, Pseudomonas sp. M23 from Maize Rhizosphere Soil
2023
Kim, J.Y. | Lee, S.Y. | Cho, K.S.
The N₂O-reducing rhizobacterium, Pseudomonas sp. M23, was isolated from maize rhizosphere soil. The maximum N₂O reduction rate of the strain M23 was 15.6 mmol·g-dry cell weight⁻¹·h⁻¹. Its N₂O reduction activity was not inhibited by diesel contaminant, and it was enhanced by the addition of the root exudates of maize and tall fescue. The remediation efficiency of diesel-contaminated soil planted with maize or tall fescue was not inhibited by inoculating with the strain M23. Root weights in the soil inoculated with the strain M23 were greater than those in the non-inoculated soil. These results suggest that Pseudomonas sp. M23 is a promising bacterium to mitigate N2O emissions during the remediation of diesel-contaminated soil.
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