Buchnera

Buchnera is a type of bacteria that lives inside aphids, tiny plant-eating insects. It forms a mutualistic relationship, meaning both benefit—Buchnera provides aphids with essential nutrients, like amino acids, that are scarce in their diet of plant sap. In return, aphids offer a protective environment and nutrients for the bacteria to thrive. This partnership is crucial for aphids’ survival, allowing them to feed on nutrient-poor plants, and highlights how microorganisms can evolve to work closely with larger organisms to ensure mutual benefit.