Endophytic bacteria are those that live inside of plants for at least some of the plant's life cycle but do not cause any outwardly apparent symptoms of the disease. In light of the fact that endophytes are a source of phytochemicals of high value, it is essential to bioprospect these microorganisms in order to find a wide variety of related phytochemicals that have some sort of therapeutic effect. Plant endophytes can stimulate plant growth in a number of different ways, including fixing atmospheric nitrogen, creating phytohormones, preventing the spread of phytopathogens, and improving mineral uptake. Endophytes possess different types of bioactivity, such as antibacterial, anticancer, antifungul and antiviral agents.