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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] [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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Chakraborty B, Shashiraj KN, Kumar RS, Bhat MP, Basavarajappa DS, Almansour AI, Perumal K, Nayaka S. Unveiling the Pharmacological Significance of Marine Streptomyces violaceusniger KS20: Isolation, Characterization, and Assessment of Its Biomedical Applications. Metabolites 2023; 13:1022. [PMID: 37755302 PMCID: PMC10536031 DOI: 10.3390/metabo13091022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/11/2023] [Accepted: 09/17/2023] [Indexed: 09/28/2023] Open
Abstract
Marine actinomycetes represent a highly favorable source of bioactive compounds and have been the mainstay of much research in recent years. Recent reports have shown that marine Streptomyces sp. can produce compounds with diverse and potent biological activities. Therefore, the key objective of the study was to isolate and screen a potential actinomycete from marine ecosystems of Devbagh and Tilmati beaches, Karwar. Streptomyces sp. KS20 was characterized and the ethyl acetate extract (EtOAc-Ex) was screened for biomedical applications. Streptomyces sp. KS20 produced grayish-white aerial and pale-yellow substrate mycelia and revealed an ancestral relationship with Streptomyces violaceusniger. Optimum growth of the organism was recorded at 30 °C and pH 7.0. The metabolite profiling of EtOAc-Ex expressed the existence of several bioactive metabolites, whereas the functional groups were indicated by Fourier transform infrared (FTIR) spectroscopy. A considerable antioxidant activity was shown for EtOAc-Ex with IC50 of 92.56 μg/mL. In addition to this, Streptomyces sp. KS20 exhibited significant antimicrobial properties, particularly against Escherichia coli, where a zone of inhibition measuring 36 ± 0.83 mm and a minimum inhibitory concentration (MIC) of 3.12 µg/mL were observed. The EtOAc-Ex even revealed significant antimycobacterial potency with IC50 of 6.25 μg/mL. Finally, the antiproliferative potentiality of EtOAc-Ex against A549 and PC-3 cell lines revealed a constant decline in cell viability while raising the concentration of EtOAc-Ex from 12.5 to 200 μg/mL. The IC50 values were determined as 94.73 μg/mL and 121.12 μg/mL for A549 and PC-3 cell lines, respectively. Overall, the exploration of secondary metabolites from marine Streptomyces sp. KS20 represents an exciting area of further research with the potential to discover novel bioactive compounds that could be developed into therapeutics for various medical applications.
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Affiliation(s)
- Bidhayak Chakraborty
- P.G. Department of Studies in Botany, Karnatak University, Dharwad 580003, India; (B.C.); (K.N.S.); (M.P.B.); (D.S.B.)
| | | | - Raju Suresh Kumar
- Department of Chemistry, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia; (R.S.K.); (A.I.A.)
| | - Meghashyama Prabhakara Bhat
- P.G. Department of Studies in Botany, Karnatak University, Dharwad 580003, India; (B.C.); (K.N.S.); (M.P.B.); (D.S.B.)
| | | | - Abdulrahman I. Almansour
- Department of Chemistry, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia; (R.S.K.); (A.I.A.)
| | - Karthikeyan Perumal
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Ave, Columbus, OH 43210, USA;
| | - Sreenivasa Nayaka
- P.G. Department of Studies in Botany, Karnatak University, Dharwad 580003, India; (B.C.); (K.N.S.); (M.P.B.); (D.S.B.)
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Math HH, Nayaka S, Rudrappa M, Kumar RS, Almansour AI, Perumal K, Kantli GB. Isolation, Characterization of Pyraclostrobin Derived from Soil Actinomycete Streptomyces sp. HSN-01 and Its Antimicrobial and Anticancer Activity. Antibiotics (Basel) 2023; 12:1211. [PMID: 37508307 PMCID: PMC10376734 DOI: 10.3390/antibiotics12071211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/13/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
The present study demonstrated the isolation, characterization, and antimicrobial and anticancer activity of active metabolite produced from mining-soil-derived actinomycetes. Among the 21 actinomycete isolates, the isolate HSN-01 exhibited significant antimicrobial activity in primary screening and was identified as Streptomyces sp. through 16S rRNA gene sequencing. The active metabolite was separated, purified, and confirmed through UV-Vis spectroscopy, FTIR, HR-ESI-MS, and NMR analysis and identified as pyraclostrobin. Further, the active metabolite pyraclostrobin was tested for antimicrobial and anticancer activity against the hepatocellular carcinoma (HepG2) cell line. The metabolite exhibited maximum antimicrobial potential with 17.0, 13.33, 17.66, 15.66, 14.66, and 14.0 mm of inhibition against B. cereus, S. aureus, E. coli, P. aeruginosa, S. flexneri, and C. glabrata. The active metabolite exhibited dose-dependent anticancer potential against the hepatocellular carcinoma (HepG2) cell line with the IC50 56.76 µg/mL. This study suggests that Streptomyces sp. HSN-01 is an excellent source of active secondary metabolites with various biological activities.
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Affiliation(s)
- Halaswamy Hire Math
- Post Graduate Department of Studies in Botany, Karnatak University, Dharwad 580003, Karnataka, India
| | - Sreenivasa Nayaka
- Post Graduate Department of Studies in Botany, Karnatak University, Dharwad 580003, Karnataka, India
| | - Muthuraj Rudrappa
- Post Graduate Department of Studies in Botany, Karnatak University, Dharwad 580003, Karnataka, India
| | - Raju Suresh Kumar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdulrahman I Almansour
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Karthikeyan Perumal
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Ave, Columbus, OH 43210, USA
| | - Girish Babu Kantli
- Department of Life Sciences, PIAS, Parul University, Vadodara 391760, Gujarat, India
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Math HH, Kumar RS, Chakraborty B, Almansour AI, Perumal K, Kantli GB, Nayaka S. Antimicrobial Efficacy of 7-Hydroxyflavone Derived from Amycolatopsis sp. HSN-02 and Its Biocontrol Potential on Cercospora Leaf Spot Disease in Tomato Plants. Antibiotics (Basel) 2023; 12:1175. [PMID: 37508271 PMCID: PMC10376496 DOI: 10.3390/antibiotics12071175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/04/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023] Open
Abstract
The actinomycete strain HSN-02 was isolated from the soil of a mining field in the Sandur region, Bellary, Karnataka, India. According to the morphological, cultural, physiological, and biochemical characteristics and the 16S rDNA sequence analysis, the strain HSN-02 was identified as Amycolatopsis sp. The antimicrobial activity strain HSN-02 presented stable and moderate inhibitory activity against human pathogens. In pot experiments in the greenhouse, the development of Cercospora leaf spot was markedly suppressed by treatment with the purified compound from the strain HSN-02, and the control efficacy was 45.04 ± 1.30% in Septoria lycopersici-infected tomato plants. A prominent compound was obtained from the fermentation broth of the strain HSN-02 using column chromatography and HPLC. The chemical structural analyses using UV, FTIR, HR-ESI-MS, and NMR confirmed that the compound produced by the strain HSN-02 is 7-hydroxyflavone. This investigation showed the role which the actinomycete strain can play in controlling leaf spots caused by S. lycopersici to reduce treatments with chemical fungicides.
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Affiliation(s)
- Halaswamy Hire Math
- P.G. Department of Studies in Botany, Karnatak University, Dharwad 580003, Karnataka, India
| | - Raju Suresh Kumar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Bidhayak Chakraborty
- P.G. Department of Studies in Botany, Karnatak University, Dharwad 580003, Karnataka, India
| | - Abdulrahman I Almansour
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Karthikeyan Perumal
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Ave, Columbus, OH 43210, USA
| | - Girish Babu Kantli
- Department of Life Sciences, PIAS, Parul University, Vadodara 391760, Gujarat, India
| | - Sreenivasa Nayaka
- P.G. Department of Studies in Botany, Karnatak University, Dharwad 580003, Karnataka, India
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Konwar AN, Basak S, Devi SG, Borah JC, Thakur D. Streptomyces sp. MNP32, a forest-dwelling Actinomycetia endowed with potent antibacterial metabolites. 3 Biotech 2023; 13:257. [PMID: 37405270 PMCID: PMC10314884 DOI: 10.1007/s13205-023-03670-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 06/12/2023] [Indexed: 07/06/2023] Open
Abstract
The Actinomycetia isolate, MNP32 was isolated from the Manas National Park of Assam, India, located in the Indo-Burma biodiversity hotspot region of Northeast India. Morphological observations and molecular characterization revealed its identity to be Streptomyces sp. with a 99.86% similar to Streptomyces camponoticapitis strain I4-30 through 16S rRNA gene sequencing. The strain exhibited broad-spectrum antimicrobial activity against a wide range of bacterial human pathogens including WHO-listed critical priority pathogens such as methicillin-resistant Staphylococcus aureus (MRSA) and Acinetobacter baumannii. The ethyl acetate extract was found to disrupt the membrane of the test pathogens which was evidenced through scanning electron microscopy, membrane disruption assay and confocal microscopy. Cytotoxicity studies against CC1 hepatocytes demonstrated that EA-MNP32 had a negligible effect on cell viability. Chemical analysis of the bioactive fraction using gas chromatography-mass spectrometry (GC-MS) showed the presence of 2 major chemical compounds that include Phenol, 3,5-bis(1,1-dimethylethyl)- and [1,1'-Biphenyl]-2,3'-diol, 3,4',5,6'-tetrakis(1,1-dimethylethyl)- which have been reported to possess antimicrobial activity. The phenolic hydroxyl groups of these compounds were proposed to interact with the carbonyl group of the cytoplasmic proteins and lipids leading to destabilization and rupture of the cell membrane. These findings highlight the potential of exploring culturable actinobacteria from the microbiologically under-explored forest ecosystem of Northeast India and bioactive compounds from MNP32 which can be beneficial for future antibacterial drug development.
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Affiliation(s)
- Aditya Narayan Konwar
- Microbial Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Studies in Science and Technology, Guwahati, Assam 781035 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Surajit Basak
- Microbial Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Studies in Science and Technology, Guwahati, Assam 781035 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Shalini Gurumayum Devi
- Chemical Biology Laboratory-1, Life Sciences Division, Institute of Advanced Studies in Science and Technology, Guwahati, Assam 781035 India
| | - Jagat Chandra Borah
- Chemical Biology Laboratory-1, Life Sciences Division, Institute of Advanced Studies in Science and Technology, Guwahati, Assam 781035 India
| | - Debajit Thakur
- Microbial Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Studies in Science and Technology, Guwahati, Assam 781035 India
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Rudrappa M, Kumar M S, Kumar RS, Almansour AI, Perumal K, Nayaka S. Bioproduction, purification and physicochemical characterization of melanin from Streptomyces sp. strain MR28. Microbiol Res 2022; 263:127130. [PMID: 35870343 DOI: 10.1016/j.micres.2022.127130] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/28/2022] [Accepted: 07/12/2022] [Indexed: 11/24/2022]
Abstract
Melanin has been produced and extracted from various microorganisms because of its therapeutic nature and diverse applications in various fields. Hence we isolated actinomycetes from soil which is capable of producing melanin pigment from L-tyrosine and it was identified as Streptomyces sp. strain MR28 on the basis of biochemical, morphological characterization, and 16S rRNA gene sequencing. Production of melanin pigment was achieved by using standardized tyrosine broth. The melanin pigment was purified, and characterized by using various techniques such as Ultraviolet-Visible spectroscopy (UV-Vis), Fourier Transform Infrared spectroscopy (FTIR), Thin Layer Chromatography (TLC), 1H NMR spectroscopy, Scanning Electron Microscopy (SEM), Elemental analysis (EDX), and Thermogravimetric analysis (TGA). The pigment exhibit maximum UV-Vis absorption spectrum at 299 nm, FTIR peaks confirm the occurrence of C-H, C-N, C-O, and CC functional groups which are key functional groups in indole/pyrrole structure. TLC analysis showed a single band with a significant Retardation factor (Rf) of 0.68, Resonance peaks at 6.66, 7.18, and 7.28 ppm exhibit aromatic hydrogen in the indole/pyrole system in 1H NMR. The EDX reports the presence of carbon, nitrogen, oxygen, and sulfur which are key elements in melanin structure, and TGA exhibits the thermal stability of the melanin. Overall, the successful production and extraction of melanin was achieved by using soil actinomycetes Streptomyces sp. strain MR28, and its characterization confirms the nature of the melanin pigment which has significant value in the industrial and biomedical field.
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Affiliation(s)
- Muthuraj Rudrappa
- P.G. Department of Studies in Botany, Karnatak University, Dharwad 580003, Karnataka, India
| | - Santosh Kumar M
- Department of Biochemistry, Davanagere University, 577007 Karnataka, India
| | - Raju Suresh Kumar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdulrahman I Almansour
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Karthikeyan Perumal
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Ave, Columbus, OH 43210, USA
| | - Sreenivasa Nayaka
- P.G. Department of Studies in Botany, Karnatak University, Dharwad 580003, Karnataka, India.
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Nabi M, Tabassum N, Ganai BA. Phytochemical screening and antibacterial activity of Skimmia anquetilia N.P. Taylor and Airy Shaw: A first study from Kashmir Himalaya. FRONTIERS IN PLANT SCIENCE 2022; 13:937946. [PMID: 36035710 PMCID: PMC9412939 DOI: 10.3389/fpls.2022.937946] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/11/2022] [Indexed: 05/07/2023]
Abstract
The present study aimed to explore the antibacterial activity of various organic root extracts of Skimmia anquetilia N.P. Taylor and Airy Shaw and the identification of major functional groups and phytoconstituents through fourier transform infrared spectrometer (FTIR) and gas chromatography-mass spectrometer (GC-MS). The extracts were evaluated for antibacterial activity against multidrug-resistant (MDR) strains viz., Pseudomonas aeruginosa (MTCC424), Escherichia coli (MTCC739), Klebsiella pneumoniae (MTCC139), Salmonella typhi (MTCC3224), and Staphylococcus aureus (MTCC96). ESKAPE pathogens such as S. aureus, K. pneumoniae, and P. aeruginosa are responsible for a majority of all healthcare acquired infections. The ethyl acetate extract showed the highest zone of inhibition against P. aeruginosa (18 mm) followed by S. aureus (17 mm). The minimum inhibitory concentration (MIC) of ethyl acetate extract against strain of S. aureus (4 mg mL-1) demonstrated therapeutically significant antibacterial activity. The FTIR spectra of root extracts revealed the occurrence of functional characteristic peaks of alcohols, carboxylic acids, aromatic compounds, alkanes, alkenes, and amines that indicates the presence of various metabolites in the extracts. The GC-MS investigation led to the identification of diverse phytoconstituents in each of the extracts with varying concentrations and molecular masses. The highest number of compounds were identified from the methanol extract (112), followed by n-hexane extract (88) and ethyl acetate extract (74). The most predominant compounds were 5, 10-pentadecadien-1-ol, (Z,Z)-(33.94%), n-hexadecanoic acid (13.41%) in n-hexane extract, 5,10-pentadecadien-1-ol, (Z,Z)-(10.48%), 1-hexyl-2-nitrocyclohexane (7.94%) in ethyl acetate extract, and 1-hexyl-2-nitrocyclohexane (15.43%), cis,cis,cis-7,10,13-hexadecatrienal (13.29%) in methanol extract. The results of the present study will create a way for the invention of plant-based medicines for various life-threatening microbial infections using S. anquetilia, which may lead to the development of novel drugs against drug-resistant microbial infections.
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Affiliation(s)
- Masarat Nabi
- Department of Environmental Science, University of Kashmir, Srinagar, Jammu and Kashmir, India
| | - Nahida Tabassum
- Department of Pharmaceutical Sciences, University of Kashmir, Srinagar, Jammu and Kashmir, India
| | - Bashir Ahmad Ganai
- Centre of Research for Development, University of Kashmir, Srinagar, Jammu and Kashmir, India
- *Correspondence: Bashir Ahmad Ganai,
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