- Title
- Australian bush medicines harbour diverse microbial endophytes with broad-spectrum antibacterial activity
- Creator
- Ingrey, S. D.; Pearson, L. A.; Kalaitzis, J. A.; Neilan, B. A.
- Relation
- Journal of Applied Microbiology Vol. 131, Issue 5, p. 2244-2256
- Publisher Link
- http://dx.doi.org/10.1111/jam.15122
- Publisher
- Wiley-Blackwell Publishing
- Resource Type
- journal article
- Date
- 2021
- Description
- Aims: Microbial endophytes produce specialized metabolites, including antibiotics and other compounds of pharmaceutical and agricultural value. This study aimed to investigate the diversity and bioactivity of endophytes from medicinal plants used by the Dharawal People of Gamay (Botany Bay), Australia. Methods and Results: Of the 48 endophytes isolated, 19 tested positive for polyketide synthase or non-ribosomal peptide synthetase genes via a PCR incorporating degenerate primers. The biosynthetically talented endophytes were identified by 16S rRNA gene sequencing and included 4 bacteria species belonging to the orders Bacillales, Rhizobiales and Burkholderiales and 15 Ascomycota fungi species belonging to the orders Botryosphaeriales, Cladosporiales, Glomerellales, Microascales and Eurotiales. Antimicrobial testing using the disc diffusion assay demonstrated that 15 of the 19 isolates had broad-spectrum activity against a range of Gram-positive and Gram-negative bacteria. Conclusions: Taken together, these results suggest that Australian bush medicines harbour diverse biosynthetically talented microbial endophytes capable of producing broad-spectrum antibacterial compounds. Significance and Impact of the Study: This study suggests that compounds produced by microbial endophytes likely contribute to the collective medicinal properties of Australian bush medicines. Significantly, it highlights that Indigenous botanical knowledge and modern molecular approaches can be used in tandem to prioritize microorganisms that produce pharmaceutically relevant compounds.
- Subject
- antibacterial activity; bush medicine; Dharawa; endophyte; ethnobotany; medicinal plants; NRPS; PKS
- Identifier
- http://hdl.handle.net/1959.13/1446790
- Identifier
- uon:42969
- Identifier
- ISSN:1364-5072
- Rights
- Ingrey, S. D.; Pearson, L. A.; Kalaitzis, J. A.; Neilan, B. A. “Australian bush medicines harbour diverse microbial endophytes with broad-spectrum antibacterial activity”. Journal of Applied Microbiology Vol. 131, Issue 5, p. 2244-2256 (2021), which has been published in final form at http://dx.doi.org/10.1111/add.15516. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
- Language
- eng
- Full Text
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