legume plants and soil-dwelling, nitrogen-fixing bacteria, called rhizobia. The rhizobia are
housed in newly formed structures on the host roots, called nodules. Within nodules, the
rhizobia fix atmospheric N2 into useable forms of nitrogen for the plant. This process is
highly important to agriculture, as nitrogen is critical for plant growth and development and is
typically the main component of fertilizers. Although fertilizers are effective, they are …