Inorganic nitrogen compounds are a vital part for the biosynthesis or organic compounds such as amino acids, proteins, nucleic acids etc. Thus, nitrogen fixation is essential for all life to exist, grow and thrive.
The nitrogen fixing bateria that exist withing the roots, stems and leaves of sugar cane give these plants an extraordinarily evolutionary advantage. Due to this mutualistic relationship, the plants are no longer dependent on solely the soil nitrogen content, which in some areas may be low. This increases the plants' survival chances by allowing them to grow in areas where other plants may not survive.