Acetobacter diazotrophicus a biological fertilizer & is believed to be responsible for biological nitrogen fixation. Owing to their unique metabolism they can actively fix atmospheric nitrogen aerobically. It is found in symbiotic relationship with plants (such as sugar cane and coffee) as an endophyte and gets associated with plants by colonizing their internal tissues.
Acetobacter is an obligatory aerobic, Nitrogen-fixing bacteria that is known for producing acid as a result of metabolic processes. G. Diazotrophicus has been called interesting because it carries out nitrogen fixation under aerobic conditions. G. Diazotrophicus is a plant endophyte and has been said to be capable of excreting about half of its fixed nitrogen in a form that plants can use. Acetobacter bacteria is found in symbiotic relationships with many different plants, such as sugarcane and coffee plants as endophytes that associate with plants by colonizing their internal tissues. Gucanoacetobacter is the only bio inoculant able to survive in high sugar concentration conditions (able to survive in 10% sugar concentrations).
The inoculated strain was detected inside low N-fertilized sugarcane plants by histochemical staining of ?-glucuronidase and scanning electron microscopy. A. Diazotrophicus was found mainly inside cortical cells of stems and inside xylem vessels