Method for improving viability by cold adaptation of Bradyrhizobium japonicum

摘要

PURPOSE: A method for improving viability of Bradyrhizobium japonicum by cold adaptation thereof is provided, thereby effectively improving tolerance of Bradyrhizobium japonicum to various environmental stresses. CONSTITUTION: A method for improving viability of Bradyrhizobium japonicum comprises cold adaptation of Bradyrhizobium japonicum at 4 to 15 deg. C, preferably 4 deg. C for 6 to 24 hours, preferably 16 hours, wherein the improvement of viability of Bradyrhizobium japonicum is accomplished by improving tolerance of Bradyrhizobium japonicum to various environmental stresses; and the environmental stress includes high temperature, drying and oxidation.