Nitrogen Fixation

Rhizobium japonicum forms a symbiotic relationship with leguminous plants, particularly soybeans, to fix atmospheric nitrogen into ammonium (NH₄⁺). This process significantly enhances soil fertility and supports plant growth by providing a sustainable source of nitrogen, crucial for protein synthesis and overall plant health​

Soil Improvement

In addition to nitrogen fixation, R. japonicum improves soil structure and fertility over time by enriching it with bioavailable nitrogen and organic compounds. These contributions, facilitated by root exudates and nodulation, enhance nutrient cycling within the rhizosphere​

Nodulation

This bacterium induces the formation of nodules on the roots of leguminous plants. Within these nodules, nitrogenase enzymes convert atmospheric nitrogen into usable forms, ensuring an optimal environment for nitrogen fixation​

Increased Crop Yield

By supplying fixed nitrogen directly to the host plant, R. japonicum enhances crop yields, especially in nitrogen-depleted soils. The symbiotic relationship helps crops thrive in nutrient-poor environments, significantly reducing the need for synthetic fertilizers