Isolation of Endophytic Microbes Producing Antibiotics and Antifungals from Leaf Onion (Allium fistulosum L.)
Keywords:
Endophilic microbes, leaf onions, antibiotic, antifungalAbstract
Endophytic microbes are microorganisms that live within plant tissues without harming their hosts. Some endophytic microbes, including bacteria and fungi, are known to produce bioactive compounds such as antibiotics and antifungals that have the potential to address antimicrobial resistance. The objective of this research is to determine the antibiotic and antifungal potential of endophytic bacteria and fungi isolated from the stems and roots of leeks from Parongpong, West Bandung Regency. This study employs an experimental descriptive design using the disk diffusion method (modified Kirby & Bauer test). Several endophytic microbial isolates from leek stems exhibited antibiotic and antifungal activities, with several isolates exhibiting significant activity. The BB 2 isolate showed an inhibition zone of 17 mm against Salmonella typhimurium and 13.5 mm against Staphylococcus aureus, along with antifungal activity, demonstrating a 10 mm inhibition zone against Candida albicans. Additionally, JB 2 and JB 4 isolates, also from leek stems, exhibited antibiotic potential with an 11 mm inhibition zone against Salmonella typhimurium. In conclusion, endophytic microbes from leek stems demonstrate greater potential as antibiotic and antifungal agents with stronger activity compared to those from
the roots.
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