Short Communication
Kinetics of Nitrous Oxide (N2O)-reducing Activity of Bradyrhizobium ottawaense by an Automated Analysis
2026 年 41 巻 1 号 論文ID: ME25070
詳細
2026 年 41 巻 1 号 論文ID: ME25070
The biological reduction of N2O, a potent greenhouse gas, is crucial for environmental sustainability. We developed an automated system for continuous N2O monitoring in the gas phase of a flask containing an anaerobic bradyrhizobial culture, and then examined the kinetic parameters of bacterial N2O reduction. The maximum reaction rate (Vmax) was approximately 61-fold higher for Bradyrhizobium ottawaense SG09 (1,471 nmol h–1 109 cells–1) than for B. diazoefficiens USDA110 (24 nmol h–1 109 cells–1). Our kinetics analysis confirmed that SG09 maintained higher N2O-reducing activity than USDA110 even at the atmospheric concentration of N2O (0.34 ppm).
