Sinorhizobium fredii USDA 257 str. USDA257

Sinorhizobium fredii USDA 257, designated as USDA257, is a Gram-negative bacterium notable for its role in symbiotic nitrogen fixation. This organism is classified under the bacilli shape, indicative of its rod-like appearance. USDA257 exhibits aerobic oxygen requirements, thriving in environments where oxygen is present. The bacterium possesses flagella, which contribute to its mobility, allowing it to navigate through its habitat effectively. This strain is mesophilic, meaning it prefers moderate temperature ranges for optimal growth and metabolic activity. Sinorhizobium fredii USDA 257 is characterized by having a single replicon, which is significant for its genetic stability and replication processes. The accession number for this strain is NC_018000.1, which is used for reference in genomic studies and data repositories. The ecological role of Sinorhizobium fredii USDA 257 extends beyond its basic biological traits. As a nitrogen-fixing symbiont, it forms beneficial relationships with leguminous plants, aiding in the conversion of atmospheric nitrogen into a form that plants can utilize. This symbiosis not only enhances soil fertility but also contributes to sustainable agricultural practices by reducing the need for synthetic fertilizers. Thus, USDA257 plays a critical part in both plant health and soil ecosystem dynamics, highlighting the importance of microbial interactions in agricultural systems.