General Information: This strain (A1501; CGMCC 0351) was isolated from rice roots that had been inoculated with strain A15 in a rice paddy in China. It is considered wild-type and has been studied for the nitrogen-fixation process and is used as an inoculant during rice cultivation. Bacteria belonging to the Pseudomonas group are common inhabitants of soil and water and can also be found on the surfaces of plants and animals. Pseudomonas bacteria are found in nature in a biofilm or in planktonic form. Pseudomonas bacteria are renowned for their metabolic versatility as they can grow under a variety of growth conditions and do not need any organic growth factors. Pseudomonas stutzeri is a nonfluorescent denitrifying bacterium widely distributed in the environment.