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Moussa AY. Streptomyces Endophytes in Edible Plants: New Insights into their Chemistry and Health Benefits. Chem Biodivers 2024:e202400888. [PMID: 38884446 DOI: 10.1002/cbdv.202400888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/16/2024] [Accepted: 06/17/2024] [Indexed: 06/18/2024]
Abstract
Streptomyces is the largest source of microbial antibiotics with about 50 % of marketed antimicrobial drugs originating from this genus. Endophytic streptomyces are the link between medicinal plants and the microbial world. Endophytic Streptomyces in edible plants were not targeted before despite their uniqueness and importance. In this review, we analyzed the chemical diversity of more than 150 compounds belonging to endophytic Streptomyces chemical classes such as alkaloids, polyketides, peptides, macrolides and terpenes and their biological activities. This analysis showed a dominant antimicrobial effect for most of the isolated compounds and highlighted an underestimated diversity to be studied or repurposed for other biological activities. Return to edible plants use and conducting toxicity studies to rationalize their nutraceutical potential based on their beneficial endophytes is urged. Although there are many studies for non-vertebrates, the nutraceutical potential of these plants is expected to improve the gut microbiota since they are enriched with bioactive compounds from streptomyces species. This is the first review to discuss edible plants associated streptomyces, and we prospect that many studies will follow to unravel the mysterious health benefits of streptomyces in the human microbiome and encourage the revival of a correct lifestyle for the sake of a healthier microbiome.
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Affiliation(s)
- Ashaimaa Y Moussa
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Cairo, 11566, Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University Postal address, 11566, African Union Organization Street, Abbassia, Cairo, Egypt
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Maimone NM, Apaza-Castillo GA, Quecine MC, de Lira SP. Accessing the specialized metabolome of actinobacteria from the bulk soil of Paullinia cupana Mart. on the Brazilian Amazon: a promising source of bioactive compounds against soybean phytopathogens. Braz J Microbiol 2024; 55:1863-1882. [PMID: 38421597 PMCID: PMC11153476 DOI: 10.1007/s42770-024-01286-1] [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: 11/24/2023] [Accepted: 02/10/2024] [Indexed: 03/02/2024] Open
Abstract
The Amazon rainforest, an incredibly biodiverse ecosystem, has been increasingly vulnerable to deforestation. Despite its undeniable importance and potential, the Amazonian microbiome has historically received limited study, particularly in relation to its unique arsenal of specialized metabolites. Therefore, in this study our aim was to assess the metabolic diversity and the antifungal activity of actinobacterial strains isolated from the bulk soil of Paullinia cupana, a native crop, in the Brazilian Amazon Rainforest. Extracts from 24 strains were subjected to UPLC-MS/MS analysis using an integrative approach that relied on the Chemical Structural and Compositional Similarity (CSCS) metric, GNPS molecular networking, and in silico dereplication tools. This procedure allowed the comprehensive understanding of the chemical space encompassed by these actinobacteria, which consists of features belonging to known bioactive metabolite classes and several unannotated molecular families. Among the evaluated strains, five isolates exhibited bioactivity against a panel of soybean fungal phytopathogens (Rhizoctonia solani, Macrophomina phaseolina, and Sclerotinia sclerotiorum). A focused inspection led to the annotation of pepstatins, oligomycins, hydroxamate siderophores and dorrigocins as metabolites produced by these bioactive strains, with potentially unknown compounds also comprising their metabolomes. This study introduces a pragmatic protocol grounded in established and readily available tools for the annotation of metabolites and the prioritization of strains to optimize further isolation of specialized metabolites. Conclusively, we demonstrate the relevance of the Amazonian actinobacteria as sources for bioactive metabolites useful for agriculture. We also emphasize the importance of preserving this biome and conducting more in-depth studies on its microbiota.
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Affiliation(s)
- Naydja Moralles Maimone
- College of Agriculture "Luiz de Queiroz", Department of Exact Sciences, University of São Paulo, Piracicaba, SP, 13418-900, Brazil
| | - Gladys Angélica Apaza-Castillo
- College of Agriculture "Luiz de Queiroz", Department of Genetics, University of São Paulo, Piracicaba, SP, 13418-900, Brazil
| | - Maria Carolina Quecine
- College of Agriculture "Luiz de Queiroz", Department of Genetics, University of São Paulo, Piracicaba, SP, 13418-900, Brazil
| | - Simone Possedente de Lira
- College of Agriculture "Luiz de Queiroz", Department of Exact Sciences, University of São Paulo, Piracicaba, SP, 13418-900, Brazil.
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Pereira ÉJMC, Amorim ÉADF, Aragão FMM, Câmara WDS, Araújo MC, Pereira CDDS, Dias LRL, Gomes WC, Aliança ASDS, Souza JCDS, da Silva LCN, de Miranda RDCM. Biocontrol Potential of Serratia Marcescens (B8) and Bacillus sp. (B13) Isolated from Urban Mangroves in Raposa, Brazil. Life (Basel) 2023; 13:2036. [PMID: 37895418 PMCID: PMC10607943 DOI: 10.3390/life13102036] [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: 08/01/2023] [Revised: 08/28/2023] [Accepted: 09/04/2023] [Indexed: 10/29/2023] Open
Abstract
This study analyzed the antifungal potential of 16 bacterial strains isolated from mangrove sediment. Bacterial selection was conducted in a solid medium. This was followed by the production and extraction of metabolites using ethyl acetate to evaluate chitinase production, antifungal activity, and toxicity toward Allium cepa and Tenebrio molitor. Bacterial strains B8, B11, and B13 produced the largest inhibition halos (>30 mm) toward Fusarium solani, Fusarium oxysporum, and Rhizoctonia solani fungi. Strains B1, B3, B6, B8, B11, B13, B14, and B16 produced chitinases. In assays using liquid media, B8 and B13 produced the largest inhibition halos. Exposing the fungal inocula to metabolic extracts of strains B6, B8, B11, B13, B14, B15, and B16 caused micromorphological alterations in the inocula, culminating in the inhibition of R. solani sporulation and spore germination. Toxicity tests using Allium cepa and Tenebrio molitor revealed that the metabolites showed low toxicity. Six of the bacterial strains were molecularly identified to species levels, and a further two to genus level. These included Serratia marcescens (B8), which exhibited activity in all tests. Mangroves provide a useful resource for the isolation of microorganisms for biocontrol. Among the isolates, Serratia marcescens and Bacillus spp. showed the greatest potential to produce metabolites for use as biocontrol agents in agriculture.
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Affiliation(s)
- Érima Jôyssielly Mendonça Castro Pereira
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
| | - Érika Alves da Fonsêca Amorim
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
- Programa de Pós-Graduação em Odontologia, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Felicia Maria Melo Aragão
- Programa de Pós-Graduação em Meio Ambiente, Universidade Ceuma, São Luís 65075-120, Brazil; (F.M.M.A.); (W.d.S.C.)
| | - Wallison de Souza Câmara
- Programa de Pós-Graduação em Meio Ambiente, Universidade Ceuma, São Luís 65075-120, Brazil; (F.M.M.A.); (W.d.S.C.)
| | - Maria Carvalho Araújo
- Programa de Pós-Graduação em Gestão de Programas e Serviços de Saúde, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Carlos Drielson da Silva Pereira
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
| | - Leo Ruben Lopes Dias
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
| | - Wolia Costa Gomes
- Programa de Pós-Graduação em Meio Ambiente, Universidade Ceuma, São Luís 65075-120, Brazil; (F.M.M.A.); (W.d.S.C.)
| | - Amanda Silva dos Santos Aliança
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Gestão de Programas e Serviços de Saúde, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Joicy Cortez de Sá Souza
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Luís Cláudio Nascimento da Silva
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
- Programa de Pós-Graduação em Odontologia, Universidade Ceuma, São Luís 65075-120, Brazil
| | - Rita de Cássia Mendonça de Miranda
- Programa de Pós-Graduação em Biologia Microbiana, Universidade Ceuma, São Luís 65075-120, Brazil
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Amazônia, Universidade CEUMA, São Luís 65075-120, Brazil; (É.A.d.F.A.)
- Programa de Pós-Graduação em Meio Ambiente, Universidade Ceuma, São Luís 65075-120, Brazil; (F.M.M.A.); (W.d.S.C.)
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Willian de Alencar Pereira E, Fontes VC, da Fonseca Amorim EA, de Miranda RDCM, Carvalho RC, de Sousa EM, Cutrim SCPF, Alves Lima CZGP, de Souza Monteiro A, Neto LGL. Antimicrobial effect of quercetin against Streptococcus pneumoniae. Microb Pathog 2023; 180:106119. [PMID: 37098385 DOI: 10.1016/j.micpath.2023.106119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/16/2023] [Accepted: 04/17/2023] [Indexed: 04/27/2023]
Abstract
Streptococcus pneumoniae is a bacterium that causes serious infections, including pneumonia. The limited range of available vaccines and the rise of antibiotic-resistant bacteria mean that new treatments are needed. This study looked at the potential of quercetin as an antimicrobial agent against S. pneumoniae in both isolation and in biofilms. The researchers used microdilution tests, checkerboard assays, and death curve assays, as well as in silico and in vitro cytotoxicity evaluations. They found that quercetin at a concentration of 125.0 μg/mL had both inhibitory and bactericidal effects against S. pneumoniae, and these effects were increased when quercetin was combined with ampicillin. Quercetin also reduced the growth of pneumococcal biofilms. In addition, quercetin (absence or in combination with ampicillin) reduced the death time of Tenebrio molitor larvae compared to the infection control. The study also demonstrated that quercetin had low toxicity in both in silico and in vivo assays, suggesting that it could be a promising treatment for infections caused by S. pneumoniae.
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Development and Physicochemical Characterization of Eugenia brejoensis Essential Oil-Doped Dental Adhesives with Antimicrobial Action towards Streptococcus mutans. J Funct Biomater 2022; 13:jfb13030149. [PMID: 36135584 PMCID: PMC9502856 DOI: 10.3390/jfb13030149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/26/2022] [Accepted: 08/27/2022] [Indexed: 11/16/2022] Open
Abstract
Dental caries is a multifactorial, biofilm-dependent infectious disease that develops when detrimental changes occur in the oral cavity microenvironment. The antimicrobial and antivirulence properties of the essential oil obtained from the leaves of Eugenia brejoensis Mazine (EBEO) have been reported against Gram-positive and Gram-negative bacteria. Herein, the antimicrobial action of EBEO towards Streptococcus mutans is reported, along with the development and characterization of dental adhesives doped with. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of EBEO were determined against S. mutans, while its toxicity was analyze using Tenebrio molitor larvae. EBEO (MIC and 10×MIC) was incorporated into the Ambar Advanced Polymerization System® (Ambar APS), a two-step total-etch adhesive system (FGM Dental Group), and the antibiofilm action was evaluated. The reflective strength, modulus of elasticity, degree of conversion, and maximum rate of polymerization of each adhesive were also determined. The MIC and MBC values of EBEO against S. mutans were 62.5 µg/mL. The tested concentrations of EBEO were non-toxic to T. molitor larvae. The formation of S. mutans biofilms was significantly inhibited by EBEO and EBEO-coated resin discs (p < 0.05). Importantly, EBEO incorporation did not affect the mechanical and physicochemical properties in relation to oil-free adhesive version. EBEO showed strong antibacterial and antibiofilm activity against S. mutans, no toxicity effect against T. molitor larvae, and did not jeopardize the physical-chemical properties tested.
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Ethyl Acetate Fraction of Bixa orellana and Its Component Ellagic Acid Exert Antibacterial and Anti-Inflammatory Properties against Mycobacterium abscessus subsp. massiliense. Antibiotics (Basel) 2022; 11:antibiotics11060817. [PMID: 35740223 PMCID: PMC9220277 DOI: 10.3390/antibiotics11060817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022] Open
Abstract
Mycobacterium abscessus subsp. massiliense (Mabs) causes chronic infections, which has led to the need for new antimycobacterial agents. In this study, we investigated the antimycobacterial and anti-inflammatory activities of the ethyl acetate fraction of Bixa orellana leaves (BoEA) and ellagic acid (ElAc). In silico analysis predicted that ElAc had low toxicity, was not mutagenic or carcinogenic, and had antimicrobial and anti-inflammatory activities. Apparently, ElAc can interact with COX2 and Dihydrofolate reductase (DHFR) enzymes, which could explain both activities. In vitro analysis showed that BoEA and ElAc exerted antimicrobial activity against Mabs (minimum inhibitory concentration of 1.56, 1.56 mg/mL and bactericidal concentration of 6.25, 3.12 mg/mL, respectively. Clarithromycin showed MIC and MBC of 1 and 6 µg/mL). Treatment with BoEA or ElAc increased survival of Tenebrio molitor larvae after lethal infection with Mabs and reduced carrageenan-induced paw edema in mice, around 40% of edema volume after the fourth hour, similarly to diclofenac. In conclusion, BoEA and ElAc exert antimicrobial effects against Mabs and have anti-inflammatory effects, making them potential sources of antimycobacterial drugs. The biological activities of ElAc may be due to its high binding affinities predicted for COX2 and DHFR enzymes.
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Dias EDJS, Cantanhede Filho AJ, Carneiro FJC, da Rocha CQ, da Silva LCN, Santos JCB, Barros TF, Santos DM. Antimicrobial Activity of Extracts from the Humiria balsamifera (Aubl). PLANTS (BASEL, SWITZERLAND) 2021; 10:1479. [PMID: 34371681 PMCID: PMC8309364 DOI: 10.3390/plants10071479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 11/20/2022]
Abstract
Humiria balsamifera (Aubl), commonly known as "mirim", is a plant of the Humiriaceae family, which consists of 39 species divided between eight genera: Duckesia, Endopleura, Humiria, Humiriastrum, Hylocara, Sacoglottis, Schistostemon, and Vantenea. This study aimed to characterize H. balsamifera extracts by LC-MS/MS and evaluate their antimicrobial potential through in vitro and in vivo assays. The leaves and stem bark of H. balsamifera were collected and dried at room temperature and then ground in a knife mill. The extracts were prepared with organic solvents in order to increase the polarity index (hexane, ethyl acetate, and methanol). The antimicrobial effects of these extracts were evaluated against the following bacterial strains: Escherichia coli ATCC 25922, Listeria monocytogenes ATCC 15313, Salmonella enterica Typhimurium ATCC 14028, and Staphylococcus aureus ATCC 6538. The best activity was observed in the ethyl acetate (EALE = 780 µg/mL), methanol (MLE = 780 µg/mL), and hexane (HLE = 1560 µg/mL) leaf extracts against S. aureus. Considering the results for both antimicrobial and antibiofilm activities, the EALE extract was chosen to proceed to the infection assays, which used Tenebrio molitor larvae. The EALE treatment was able to extend the average lifespan of the larvae (6.5 days) in comparison to S. aureus-infected larvae (1 day). Next, the samples were characterized by High-Performance Liquid Chromatography coupled to a mass spectrometer, allowing the identification of 11 substances, including seven flavonoids, substances whose antimicrobial activity is already well-reported in the literature. The number of bioactive compounds found in the chemical composition of H. balsamifera emphasizes its significance in both traditional medicine and scientific research that studies new treatments based on substances from the Brazilian flora.
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Affiliation(s)
- Edelson de J. S. Dias
- Chemistry Graduate Program, Federal Institute of Education, Science and Technology of Maranhão, Avenida Getúlio Vargas 04, Monte Castelo, São Luís 65030-005, MA, Brazil; (A.J.C.F.); (F.J.C.C.)
| | - Antônio J. Cantanhede Filho
- Chemistry Graduate Program, Federal Institute of Education, Science and Technology of Maranhão, Avenida Getúlio Vargas 04, Monte Castelo, São Luís 65030-005, MA, Brazil; (A.J.C.F.); (F.J.C.C.)
| | - Fernando J. C. Carneiro
- Chemistry Graduate Program, Federal Institute of Education, Science and Technology of Maranhão, Avenida Getúlio Vargas 04, Monte Castelo, São Luís 65030-005, MA, Brazil; (A.J.C.F.); (F.J.C.C.)
| | - Cláudia Q. da Rocha
- Chemistry Graduate Program, Federal University of Maranhão, Av. dos Portugueses, 1966—Vila Bacanga, São Luís 65080-805, MA, Brazil;
| | - Luís Cláudio N. da Silva
- Graduate Program in Microbial Biology, CEUMA University, Rua Josué Montello, 1—Renascença II, São Luís 65075-120, MA, Brazil; (L.C.N.d.S.); (J.C.B.S.); (T.F.B.); (D.M.S.)
| | - Joice C. B. Santos
- Graduate Program in Microbial Biology, CEUMA University, Rua Josué Montello, 1—Renascença II, São Luís 65075-120, MA, Brazil; (L.C.N.d.S.); (J.C.B.S.); (T.F.B.); (D.M.S.)
| | - Thayná F. Barros
- Graduate Program in Microbial Biology, CEUMA University, Rua Josué Montello, 1—Renascença II, São Luís 65075-120, MA, Brazil; (L.C.N.d.S.); (J.C.B.S.); (T.F.B.); (D.M.S.)
| | - Deivid M. Santos
- Graduate Program in Microbial Biology, CEUMA University, Rua Josué Montello, 1—Renascença II, São Luís 65075-120, MA, Brazil; (L.C.N.d.S.); (J.C.B.S.); (T.F.B.); (D.M.S.)
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