Antimicrobial and antioxidant activities of endophytes from Citrus Limon
L Nivetha and RN Kharwar
Citrus limon is native to Asia and are used routinely by people for various purpose to make medicine. It also used to treat scurvy as it is rich in vitamin C. The antibacterial activity, antioxidant activity and extracellular hydrolytic enzymes of endophytic fungi associated with this plant were studied. Plant samples which included leaves, stems and roots were used. 24 morphotypes were isolated from the 97 segements 27 root samples, 42 leaf samples and 28 stem samples). Fusarium sp showed the greatest antibacterial activity against Staphylococcus aureus and antioxidant activity. Twelve species showed proteolytic activity, particularly Fusarium sp. Ten species showed positive for lipase activity and three species showed positive in cellulase and all the isolates were showed negative in amylase activity. It is clear that the endophytic fungi from Citrus limon have potential for the production of bioactive compounds and may be a sources of new therapeutic agents for the effective treatment of diseases in humans. To our knowledge, this is the first study of endophytic fungi from different tissues of C.limon and their biotechnological potential.