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Rammali S, Rahim A, El Aalaoui M, Bencharki B, Dari K, Habach A, Abdeslam L, Khattabi A. Antimicrobial potential of Streptomyces coeruleofuscus SCJ isolated from microbiologically unexplored garden soil in Northwest Morocco. Sci Rep 2024; 14:3359. [PMID: 38336871 PMCID: PMC10858231 DOI: 10.1038/s41598-024-53801-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 02/05/2024] [Indexed: 02/12/2024] Open
Abstract
Research on microorganisms in various biotopes is required to identify new, natural potent molecules. These molecules are essential to control the development of multi-drug resistance (MDR). In the present study, a Streptomyces sp., namely SCJ, was isolated from a soil sample collected from a Moroccan garden. SCJ isolate was identified on the basis of a polyphasic approach, which included cultural, micro-morphological, biochemical, and physiological characteristics. The sequence of the 16S rRNA gene of the SCJ strain showed 99.78% similarity to strains of Streptomyces coeruleofuscus YR-T (KY753282.1). The preliminary screening indicated that the SCJ isolate exhibited activity against Candida albicans ATCC 60,193, Escherichia coli ATCC 25,922, Staphylococcus aureus CECT 976, Staphylococcus aureus ATCC 25,923, Bacillus cereus ATCC 14,579, Pseudomonas aeruginosa ATCC 27,853, as well as various other clinical MDR bacteria and five phytopathogenic fungi. The ethyl acetate extract of the isolated strain demonstrated highly significant (p < 0.05) antimicrobial activity against multi-resistant bacteria and phytopathogenic fungi. The absorption spectral analysis of the ethyl acetate extract of the SCJ isolate obtained showed no absorption peaks characteristic of polyene molecules. Moreover, no hemolytic activity against erythrocytes was observed in this extract. GC-MS analysis of the ethyl acetate extract of the SCJ isolate revealed the presence of 9 volatile compounds including 3,5-Dimethylpyrazole, and pyrrolizidine derivatives (Pyrrolo[1,2-a]pyrazine 1,4-dione, hexahydro-3-(2-methylpropyl)), which could potentially explain the antimicrobial activity demonstrated in this study.
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Affiliation(s)
- Said Rammali
- Laboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco.
| | - Abdellatif Rahim
- Laboratory of Biochemistry, Neurosciences, Natural Ressources and Environment, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
| | - Mohamed El Aalaoui
- Regional Center of Agronomic Research of Settat, Tertiary Road 1406, At 5 Km From Settat, 26400, Settat, Morocco
| | - Bouchaib Bencharki
- Laboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
| | - Khadija Dari
- Laboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
| | - Aicha Habach
- Biotechnology Unit, National Institute of Agronomic Research of Rabat, Av. Annasr, 10000, Rabat, Morocco
| | - Lamiri Abdeslam
- Applied Chemistry & Environment Laboratory, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
| | - Abdelkrim Khattabi
- Laboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
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Rammali S, Hilali L, Dari K, Bencharki B, Rahim A, Timinouni M, Gaboune F, El Aalaoui M, Khattabi A. Antimicrobial and antioxidant activities of Streptomyces species from soils of three different cold sites in the Fez-Meknes region Morocco. Sci Rep 2022; 12:17233. [PMID: 36241756 PMCID: PMC9568536 DOI: 10.1038/s41598-022-21644-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/29/2022] [Indexed: 01/06/2023] Open
Abstract
The increasing demand for new bioactive compounds to combat the evolution of multi-drug resistance (MDR) requires research on microorganisms in different environments in order to identify new potent molecules. In this study, initial screening regarding the antimicrobial activity of 44 Actinomycetes isolates isolated from three soil samples from three different extremely cold sites in Morocco was carried out. Primary and secondary screening were performed against Candida albicans ATCC 60,193, Escherichia coli ATCC 25,922, Staphylococcus aureus ATCC 25,923, Bacillus cereus ATCC 14,579, other clinical MDR bacteria, and thirteen phytopathogenic fungi. Based on the results obtained, 11 active isolates were selected for further study. The 11microbial isolates were identified based on morphological and biochemical characters and their molecular identification was performed using 16S rRNA sequence homology. The UV-visible analysis of dichloromethane extracts of the five Streptomyces sp. Strains that showed high antimicrobial and antioxidant (ABTS 35.8% and DPPH 25.6%) activities revealed the absence of polyene molecules. GC-MS analysis of the dichloromethane extract of E23-4 as the most active strain revealed the presence of 21 volatile compounds including Pyrrolopyrazine (98%) and Benzeneacetic acid (90%). In conclusion, we studied the isolation of new Streptomyces strains to produce new compounds with antimicrobial and antioxidant activities in a cold and microbiologically unexplored region of Morocco. Furthermore, this study has demonstrated a significant (P < 0.0001) positive correlation between total phenolic and flavonoid contents and antioxidant capacity, paving the way for the further characterization of these Streptomyces sp. isolates for their optimal use for anticancer, antioxidant, and antimicrobial purposes.
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Affiliation(s)
- Said Rammali
- Agri-food and Health Laboratory, Faculty of Sciences and Techniques, Hassan First University of Settat, Km 3, B.P. : 577 Route de Casablanca, 26000, Settat, Morocco.
| | - Lahoucine Hilali
- Agri-food and Health Laboratory, Faculty of Sciences and Techniques, Hassan First University of Settat, Km 3, B.P. : 577 Route de Casablanca, 26000, Settat, Morocco
| | - Khadija Dari
- Agri-food and Health Laboratory, Faculty of Sciences and Techniques, Hassan First University of Settat, Km 3, B.P. : 577 Route de Casablanca, 26000, Settat, Morocco
| | - Bouchaib Bencharki
- Agri-food and Health Laboratory, Faculty of Sciences and Techniques, Hassan First University of Settat, Km 3, B.P. : 577 Route de Casablanca, 26000, Settat, Morocco
| | - Abdellatif Rahim
- Laboratory of Biochemistry, Neurosciences, Natural Ressources and Environment, Faculty of Sciences and Techniques, Hassan First University of Settat, Km 3, B.P. : 577 Route de Casablanca, 26000, Settat, Morocco, Settat
| | - Mohammed Timinouni
- Molecular Bacteriology Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco, Place Louis Pasteur, 20100
| | - Fatima Gaboune
- Biotechnology Unit, National Institute of Agronomic Research of Rabat, Rabat, Morocco, Av. Annasr, Rabat, 10000
| | - Mohamed El Aalaoui
- Department of plant protection, Regional Center of Agronomic Research of Settat, Tertiary Road 1406, At 5 Km from Settat, 26400, Settat, Morocco, Settat
| | - Abdelkrim Khattabi
- Agri-food and Health Laboratory, Faculty of Sciences and Techniques, Hassan First University of Settat, Km 3, B.P. : 577 Route de Casablanca, 26000, Settat, Morocco
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