ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
Mohammed Alorabi
Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia.
Article Number: 8520 | © The Author(s). 2024
J Pure Appl Microbiol. 2024;18(2):1110-1120.
Received: 21 February 2023 | Accepted: 18 March 2024 | Published online: 27 May 2024
Issue online: June 2024

The use of antibiotics against a range of pathogenic bacteria has increased in recent years, leading to the development of drug resistance, which makes disease control challenging. Thus, the need for the development of new antibacterial medications is critical. Natural resources, such as entomopathogenic bacteria (EPB), provide a rich source of metabolites with well-known antibacterial properties. The present study aimed to investigate the antibacterial activity of symbiotic (n = 1) and non-symbiotic (n = 8) entomopathogenic bacterial species associated with the entomopathogenic nematode (EPN) Steinernema feltiae against four multidrug-resistant bacterial species. Bacterial cells and filtrates from Xenorhabdus bovienii strongly inhibited the growth of Staphylococcus aureus (33.3 and 28.9 mm) and Escherichia coli (24.6 and 21.6 mm) in disk diffusion, minimum inhibitory concentration (MIC) (2 and 8 µl/ml) and minimal bactericidal concentration (MBC) (4 and 12.5 µl/ml) assays. In conclusion, the direct application of endogenous S. feltiae-associated EPB, especially X. bovienii, appears promising as an antibacterial agent against multidrug-resistant bacteria (MRBs).


Symbiotic and Non-symbiotic Entomopathogenic Bacteria, Multidrug-resistant Bacteria, Antibacterial Activity

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© The Author(s) 2024. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.