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Bhairamkar S, Kadam P, Anjulal H, Joshi A, Chaudhari R, Bagul D, Javdekar V, Zinjarde S. Comprehensive updates on the biological features and metabolic potential of the versatile extremophilic actinomycete Nocardiopsis dassonvillei. Res Microbiol 2024; 175:104171. [PMID: 37995890 DOI: 10.1016/j.resmic.2023.104171] [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: 09/15/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 11/25/2023]
Abstract
Nocardiopsis dassonvillei prevails under harsh environmental conditions and the purpose of this review is to highlight its biological features and recent biotechnological applications. The organism prevails in salt-rich soils/marine systems and some strains endure extreme temperatures and pH. A few isolates are associated with marine organisms and others cause human diseases. Comparative genomic analysis indicates its versatility in producing biotechnologically relevant metabolites. Antimicrobial, cytotoxic, anticancer and growth promoting biomolecules are obtained from this organism. It also synthesizes biotechnologically important enzymes. Bioactive compounds and enzymes obtained from this actinomycete provide evidence regarding its metabolic competence and its potential economic value.
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Affiliation(s)
- Shivani Bhairamkar
- Department of Biotechnology (With Jointly Merged Institute of Bioinformatics and Biotechnology), Savitribai Phule Pune University, Pune, 411007, India
| | - Pratik Kadam
- Department of Biotechnology (With Jointly Merged Institute of Bioinformatics and Biotechnology), Savitribai Phule Pune University, Pune, 411007, India
| | - H Anjulal
- Department of Biotechnology (With Jointly Merged Institute of Bioinformatics and Biotechnology), Savitribai Phule Pune University, Pune, 411007, India
| | - Avani Joshi
- Department of Biotechnology (With Jointly Merged Institute of Bioinformatics and Biotechnology), Savitribai Phule Pune University, Pune, 411007, India
| | - Riddhi Chaudhari
- Department of Biotechnology (With Jointly Merged Institute of Bioinformatics and Biotechnology), Savitribai Phule Pune University, Pune, 411007, India
| | - Dimpal Bagul
- Department of Biotechnology (With Jointly Merged Institute of Bioinformatics and Biotechnology), Savitribai Phule Pune University, Pune, 411007, India
| | - Vaishali Javdekar
- Department of Biotechnology (With Jointly Merged Institute of Bioinformatics and Biotechnology), Savitribai Phule Pune University, Pune, 411007, India
| | - Smita Zinjarde
- Department of Biotechnology (With Jointly Merged Institute of Bioinformatics and Biotechnology), Savitribai Phule Pune University, Pune, 411007, India.
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Pedretti N, Iseppi R, Condò C, Spaggiari L, Messi P, Pericolini E, Di Cerbo A, Ardizzoni A, Sabia C. Cell-Free Supernatant from a Strain of Bacillus siamensis Isolated from the Skin Showed a Broad Spectrum of Antimicrobial Activity. Microorganisms 2024; 12:718. [PMID: 38674662 PMCID: PMC11052359 DOI: 10.3390/microorganisms12040718] [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: 03/07/2024] [Revised: 03/28/2024] [Accepted: 03/31/2024] [Indexed: 04/28/2024] Open
Abstract
In recent years, the search for new compounds with antibacterial activity has drastically increased due to the spread of antibiotic-resistant microorganisms. In this study, we analyzed Cell-Free Supernatant (CFS) from Bacillus siamensis, assessing its potential antimicrobial activity against some of the main pathogenic microorganisms of human interest. To achieve this goal, we exploited the natural antagonism of skin-colonizing bacteria and their ability to produce compounds with antimicrobial activity. Biochemical and molecular methods were used to identify 247 strains isolated from the skin. Among these, we found that CFS from a strain of Bacillus siamensis (that we named CPAY1) showed significant antimicrobial activity against Staphylococcus aureus, Enterococcus faecalis, Streptococcus agalactiae, and Candida spp. In this study, we gathered information on CFS's antimicrobial activity and on its sensitivity to chemical-physical parameters. Time-kill studies were performed; anti-biofilm activity, antibiotic resistance, and plasmid presence were also investigated. The antimicrobial compounds included in the CFS showed resistance to the proteolytic enzymes and were heat stable. The production of antimicrobial compounds started after 4 h of culture (20 AU/mL). CPAY1 CFS showed antimicrobial activity after 7 h of bacteria co-culture. The anti-biofilm activity of the CPAY1 CFS against all the tested strains was also remarkable. B. siamensis CPAY1 did not reveal the presence of a plasmid and showed susceptibility to all the antibiotics tested.
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Affiliation(s)
- Natalia Pedretti
- Department of Surgical, Medical, Dental and Morphological Sciences with Interest in Transplant, Oncological and Regenerative Medicine, University of Modena and Reggio Emilia, 41125 Modena, Italy; (N.P.); (E.P.); (A.A.)
| | - Ramona Iseppi
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (R.I.); (C.C.); (P.M.)
| | - Carla Condò
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (R.I.); (C.C.); (P.M.)
| | - Luca Spaggiari
- Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, 41125 Modena, Italy;
| | - Patrizia Messi
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (R.I.); (C.C.); (P.M.)
| | - Eva Pericolini
- Department of Surgical, Medical, Dental and Morphological Sciences with Interest in Transplant, Oncological and Regenerative Medicine, University of Modena and Reggio Emilia, 41125 Modena, Italy; (N.P.); (E.P.); (A.A.)
| | - Alessandro Di Cerbo
- School of Biosciences and Veterinary Medicine, University of Camerino, 62024 Matelica, Italy
| | - Andrea Ardizzoni
- Department of Surgical, Medical, Dental and Morphological Sciences with Interest in Transplant, Oncological and Regenerative Medicine, University of Modena and Reggio Emilia, 41125 Modena, Italy; (N.P.); (E.P.); (A.A.)
| | - Carla Sabia
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (R.I.); (C.C.); (P.M.)
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Hibbert T, Krpetic Z, Latimer J, Leighton H, McHugh R, Pottenger S, Wragg C, James CE. Antimicrobials: An update on new strategies to diversify treatment for bacterial infections. Adv Microb Physiol 2024; 84:135-241. [PMID: 38821632 DOI: 10.1016/bs.ampbs.2023.12.002] [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] [Indexed: 06/02/2024]
Abstract
Ninety-five years after Fleming's discovery of penicillin, a bounty of antibiotic compounds have been discovered, modified, or synthesised. Diversification of target sites, improved stability and altered activity spectra have enabled continued antibiotic efficacy, but overwhelming reliance and misuse has fuelled the global spread of antimicrobial resistance (AMR). An estimated 1.27 million deaths were attributable to antibiotic resistant bacteria in 2019, representing a major threat to modern medicine. Although antibiotics remain at the heart of strategies for treatment and control of bacterial diseases, the threat of AMR has reached catastrophic proportions urgently calling for fresh innovation. The last decade has been peppered with ground-breaking developments in genome sequencing, high throughput screening technologies and machine learning. These advances have opened new doors for bioprospecting for novel antimicrobials. They have also enabled more thorough exploration of complex and polymicrobial infections and interactions with the healthy microbiome. Using models of infection that more closely resemble the infection state in vivo, we are now beginning to measure the impacts of antimicrobial therapy on host/microbiota/pathogen interactions. However new approaches are needed for developing and standardising appropriate methods to measure efficacy of novel antimicrobial combinations in these contexts. A battery of promising new antimicrobials is now in various stages of development including co-administered inhibitors, phages, nanoparticles, immunotherapy, anti-biofilm and anti-virulence agents. These novel therapeutics need multidisciplinary collaboration and new ways of thinking to bring them into large scale clinical use.
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Affiliation(s)
- Tegan Hibbert
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Zeljka Krpetic
- School of Science, Engineering, and Environment, University of Salford, Salford, UK
| | - Joe Latimer
- School of Science, Engineering, and Environment, University of Salford, Salford, UK
| | - Hollie Leighton
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Rebecca McHugh
- School of Infection and Immunity, University of Glasgow, Glasgow, UK
| | - Sian Pottenger
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Charlotte Wragg
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Chloë E James
- School of Science, Engineering, and Environment, University of Salford, Salford, UK.
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Berdejo D, García-Gonzalo D, Oulahal N, Denkova-Kostova R, Shopska V, Kostov G, Degraeve P, Pagan R. Minimal Processing Technologies for Production and Preservation of Tailor-Made Foods §. Food Technol Biotechnol 2023; 61:357-377. [PMID: 38022877 PMCID: PMC10666941 DOI: 10.17113/ftb.61.03.23.8013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 09/06/2023] [Indexed: 12/01/2023] Open
Abstract
Tailor-made foods, also known as foods with programmable properties, are specialised systems with unique composition prepared by different methods, using the known mechanisms of action of their bioactive ingredients. The development of tailor-made foods involves the evaluation of individual components, including bioactive substances derived from waste products of other productions, such as essential oils. These components are evaluated both individually and in combination within food compositions to achieve specific functionalities. This review focuses on the application of minimal processing technologies for the production and preservation of tailor-made foods. It examines a range of approaches, including traditional and emerging technologies, as well as novel ingredients such as biomolecules from various sources and microorganisms. These approaches are combined according to the principles of hurdle technology to achieve effective synergistic effects that enhance food safety and extend the shelf life of tailor-made foods, while maintaining their functional properties.
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Affiliation(s)
- Daniel Berdejo
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza-CITA (UNIZAR), C. de Pedro Cerbuna, 12, 50009 Zaragoza, Spain
| | - Diego García-Gonzalo
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza-CITA (UNIZAR), C. de Pedro Cerbuna, 12, 50009 Zaragoza, Spain
| | - Nadia Oulahal
- Université de Lyon, Université Claude Bernard Lyon 1 (UCBL), ISARA Lyon, BioDyMIA Research Unit, Technopole Alimentec, 155 rue Henri de Boissieu, 01000 Bourg en Bresse, France
| | | | - Vesela Shopska
- University of Food Technologies (UFT), 26 Maritza boulevard, Plovdiv, Bulgaria
| | - Georgi Kostov
- University of Food Technologies (UFT), 26 Maritza boulevard, Plovdiv, Bulgaria
| | - Pascal Degraeve
- Université de Lyon, Université Claude Bernard Lyon 1 (UCBL), ISARA Lyon, BioDyMIA Research Unit, Technopole Alimentec, 155 rue Henri de Boissieu, 01000 Bourg en Bresse, France
| | - Rafael Pagan
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza-CITA (UNIZAR), C. de Pedro Cerbuna, 12, 50009 Zaragoza, Spain
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Corbu VM, Gheorghe-Barbu I, Dumbravă AȘ, Vrâncianu CO, Șesan TE. Current Insights in Fungal Importance-A Comprehensive Review. Microorganisms 2023; 11:1384. [PMID: 37374886 DOI: 10.3390/microorganisms11061384] [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: 05/07/2023] [Revised: 05/20/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
Besides plants and animals, the Fungi kingdom describes several species characterized by various forms and applications. They can be found in all habitats and play an essential role in the excellent functioning of the ecosystem, for example, as decomposers of plant material for the cycling of carbon and nutrients or as symbionts of plants. Furthermore, fungi have been used in many sectors for centuries, from producing food, beverages, and medications. Recently, they have gained significant recognition for protecting the environment, agriculture, and several industrial applications. The current article intends to review the beneficial roles of fungi used for a vast range of applications, such as the production of several enzymes and pigments, applications regarding food and pharmaceutical industries, the environment, and research domains, as well as the negative impacts of fungi (secondary metabolites production, etiological agents of diseases in plants, animals, and humans, as well as deteriogenic agents).
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Affiliation(s)
- Viorica Maria Corbu
- Genetics Department, Faculty of Biology, University of Bucharest, 060101 Bucharest, Romania
- Research Institute of the University of Bucharest-ICUB, 91-95 Spl. Independentei, 050095 Bucharest, Romania
| | - Irina Gheorghe-Barbu
- Research Institute of the University of Bucharest-ICUB, 91-95 Spl. Independentei, 050095 Bucharest, Romania
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 060101 Bucharest, Romania
| | - Andreea Ștefania Dumbravă
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 060101 Bucharest, Romania
| | - Corneliu Ovidiu Vrâncianu
- Research Institute of the University of Bucharest-ICUB, 91-95 Spl. Independentei, 050095 Bucharest, Romania
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 060101 Bucharest, Romania
| | - Tatiana Eugenia Șesan
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 060101 Bucharest, Romania
- Academy of Agricultural Sciences and Forestry, 61 Bd. Mărăşti, District 1, 011464 Bucharest, Romania
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Mulani N, Fulke AB, D'Souza E, Monga A, Nageswar Rao M, Maloo A, Ram A. Ecobiology and distribution of Streptomyces species from distinctive metal polluted sediment of tropical estuary, Northwest coast of India. MARINE POLLUTION BULLETIN 2023; 192:114955. [PMID: 37178642 DOI: 10.1016/j.marpolbul.2023.114955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 01/25/2023] [Accepted: 04/13/2023] [Indexed: 05/15/2023]
Abstract
The present study aims to isolate diverse actinomycetes communities from the estuarine sediments of Patalganga located at Northwest coast of India. Total 40 actinomycetes were isolated from 24 sediment samples by dilution plating on six different isolation media. Among them, morphologically 18 distinct selected isolates of actinomycetes were verified by 16S rRNA gene sequencing and identified as Streptomyces spp. The relationship between diversity of total actinomycetes population (TAP) and its antagonistic behaviour with the physico-chemical characteristics of sediment samples were investigated. Multiple regression analysis revealed that the influencing physico-chemical factors comprises of sediment temperature, sediment pH, organic carbon and heavy metals. The results of statistical analysis showed that TAP is positively correlated (p < 0.01) with sediment organic carbon whereas, negatively correlated with Cr (p < 0.05) and Mn (p < 0.01). Based on Principle component Analysis (PCA) and cluster analysis results, the obtained six stations can be divided into three groups. Among them mobile fraction of metals, TAP could be the main factor reflecting the lower and middle estuary. The recovery of large number of actinomycete isolates suggests that Patalganga Estuary could be potential source of bioactive compounds with biosynthetic capabilities.
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Affiliation(s)
- Najmuddin Mulani
- CSIR-National Institute of Oceanography (NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai 400053, Maharashtra, India
| | - Abhay B Fulke
- CSIR-National Institute of Oceanography (NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai 400053, Maharashtra, India.
| | - Edna D'Souza
- CSIR-National Institute of Oceanography (NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai 400053, Maharashtra, India
| | - Aashna Monga
- CSIR-National Institute of Oceanography (NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai 400053, Maharashtra, India
| | - M Nageswar Rao
- CSIR-National Institute of Oceanography (NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai 400053, Maharashtra, India
| | - Aayushi Maloo
- CSIR-National Institute of Oceanography (NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai 400053, Maharashtra, India
| | - Anirudh Ram
- CSIR-National Institute of Oceanography (NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai 400053, Maharashtra, India
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Ayon NJ. High-Throughput Screening of Natural Product and Synthetic Molecule Libraries for Antibacterial Drug Discovery. Metabolites 2023; 13:625. [PMID: 37233666 PMCID: PMC10220967 DOI: 10.3390/metabo13050625] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/29/2023] [Accepted: 05/01/2023] [Indexed: 05/27/2023] Open
Abstract
Due to the continued emergence of resistance and a lack of new and promising antibiotics, bacterial infection has become a major public threat. High-throughput screening (HTS) allows rapid screening of a large collection of molecules for bioactivity testing and holds promise in antibacterial drug discovery. More than 50% of the antibiotics that are currently available on the market are derived from natural products. However, with the easily discoverable antibiotics being found, finding new antibiotics from natural sources has seen limited success. Finding new natural sources for antibacterial activity testing has also proven to be challenging. In addition to exploring new sources of natural products and synthetic biology, omics technology helped to study the biosynthetic machinery of existing natural sources enabling the construction of unnatural synthesizers of bioactive molecules and the identification of molecular targets of antibacterial agents. On the other hand, newer and smarter strategies have been continuously pursued to screen synthetic molecule libraries for new antibiotics and new druggable targets. Biomimetic conditions are explored to mimic the real infection model to better study the ligand-target interaction to enable the designing of more effective antibacterial drugs. This narrative review describes various traditional and contemporaneous approaches of high-throughput screening of natural products and synthetic molecule libraries for antibacterial drug discovery. It further discusses critical factors for HTS assay design, makes a general recommendation, and discusses possible alternatives to traditional HTS of natural products and synthetic molecule libraries for antibacterial drug discovery.
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Affiliation(s)
- Navid J Ayon
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA
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Li H, Fu Y, Song F. Marine Aspergillus: A Treasure Trove of Antimicrobial Compounds. Mar Drugs 2023; 21:md21050277. [PMID: 37233471 DOI: 10.3390/md21050277] [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: 03/31/2023] [Revised: 04/22/2023] [Accepted: 04/25/2023] [Indexed: 05/27/2023] Open
Abstract
Secondary metabolites from marine organisms are diverse in structure and function. Marine Aspergillus is an important source of bioactive natural products. We reviewed the structures and antimicrobial activities of compounds isolated from different marine Aspergillus over the past two years (January 2021-March 2023). Ninety-eight compounds derived from Aspergillus species were described. The chemical diversity and antimicrobial activities of these metabolites will provide a large number of promising lead compounds for the development of antimicrobial agents.
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Affiliation(s)
- Honghua Li
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education of China, School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Yanqi Fu
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education of China, School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Fuhang Song
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education of China, School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
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Martins R, Sales H, Pontes R, Nunes J, Gouveia I. Food Wastes and Microalgae as Sources of Bioactive Compounds and Pigments in a Modern Biorefinery: A Review. Antioxidants (Basel) 2023; 12:antiox12020328. [PMID: 36829887 PMCID: PMC9952682 DOI: 10.3390/antiox12020328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/18/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
The United Nations 2030 Agenda for Sustainable Development has created more pressure on countries and society at large for the development of alternative solutions for synthetic and fossil fuel derived products, thus mitigating climate change and environmental hazards. Food wastes and microalgae have been studied for decades as potential sources of several compounds that could be employed in various fields of application from pharmaceutical to textile and packaging. Although multiple research efforts have been put towards extracting rich compounds (i.e., phenolic compounds, tocopherols, and tocotrienols) from these sources, they still remain overlooked as two major sources of bioactive compounds and pigments, mainly due to inefficient extraction processes. Hence, there is a growing need for the development of optimized extraction methods while employing non-organic solvent options following the main principles of green chemistry. This review will focus on delivering a clear and deep analysis on the existing procedures for obtaining bioactive compounds and pigments from food wastes derived from the most consumed and produced fruit crops in the world such as apples, oranges, cherries, almonds, and mangoes, and microalgal biomass, while giving light to the existing drawbacks in need to be solved in order to take full advantage of the rich properties present in these two major biorefinery sources.
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Affiliation(s)
- Rodrigo Martins
- Association BLC3—Technology and Innovation Campus, Centre Bio R&D Unit, Oliveira do Hospital, 3405-155 Coimbra, Portugal
- FibEnTech Research Unit, Faculty of Engineering, University of Beira Interior, 6200-001 Covilhã, Portugal
| | - Hélia Sales
- Association BLC3—Technology and Innovation Campus, Centre Bio R&D Unit, Oliveira do Hospital, 3405-155 Coimbra, Portugal
| | - Rita Pontes
- Association BLC3—Technology and Innovation Campus, Centre Bio R&D Unit, Oliveira do Hospital, 3405-155 Coimbra, Portugal
| | - João Nunes
- Association BLC3—Technology and Innovation Campus, Centre Bio R&D Unit, Oliveira do Hospital, 3405-155 Coimbra, Portugal
- BLC3 Evolution Lda, Oliveira do Hospital, 3405-155 Coimbra, Portugal
| | - Isabel Gouveia
- FibEnTech Research Unit, Faculty of Engineering, University of Beira Interior, 6200-001 Covilhã, Portugal
- Correspondence: ; Tel.: +35-127-531-9825
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Citizen Contribution for Searching for Alternative Antimicrobial Activity Substances in Soil. Antibiotics (Basel) 2022; 12:antibiotics12010057. [PMID: 36671258 PMCID: PMC9854653 DOI: 10.3390/antibiotics12010057] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022] Open
Abstract
Antimicrobial resistance (AMR) is problematic worldwide, and due to the loss of efficiency of many antibiotics, the pressure to discover alternative antimicrobial molecules has increased. Soil harbors a great biodiversity and biomass of microorganisms, and many antibiotics are produced by soil microbiota. Therefore, soil is a promising reservoir to find new antimicrobial agents. In this respect, novel pedagogical strategies regarding the AMR global crisis have recently been developed in different countries worldwide. Highlighted is the service-learning project "MicroMundo" integrated in a global Citizen Science project called "Tiny Earth". Hence, the present work aimed at determining the antimicrobial activity of soil bacteria, the biodiversity of the selected isolates as putative antimicrobial producers, and their antibiotic resistance profile. Moreover, through the MicroMundo project, we tried to illustrate the relevant link between science and education and the benefits of implementing service-learning methodologies to raise awareness of the AMR problem and to contribute to the search for new alternatives. A total of 16 teachers, 25 university students and 300 secondary school students participated in the search for antimicrobial activity on a collection of 2600 isolates obtained from a total of 130 soil samples analysed. In total, 132 isolates (5% of total tested) were selected as potential antimicrobial producers when two indicator bacteria were used (Escherichia coli and Staphylococcus epidermidis); the most frequent genus among these isolates was Bacillus, followed by Pseudomonas, Paenibacillus and Serratia. The antimicrobial activity (AA) of the 132 potential antimicrobial producers was studied in a second step against 15 indicator bacteria (of six genera and thirteen species, including relevant pathogens). Of the 132 potentially producing bacteria, 32 were selected for further characterization. In this respect, 18 isolates showed low AA, 12 isolates were considered as medium producers, and 2 highly antimicrobial-producing isolates were found (Brevibacillus laterosporus X7262 and Staphylococcus hominis X7276) showing AA against 80% of the 15 indicators tested. Moreover, 48% of the antimicrobial-producing bacteria were susceptible to all antibiotics tested. Due to citizen science, antimicrobial-producing bacteria of great interest have been isolated, managing to raise awareness about the problem of AMR.
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Bertuzzi T, Leni G, Bulla G, Giorni P. Reduction of Mycotoxigenic Fungi Growth and Their Mycotoxin Production by Bacillus subtilis QST 713. Toxins (Basel) 2022; 14:toxins14110797. [PMID: 36422971 PMCID: PMC9694810 DOI: 10.3390/toxins14110797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/12/2022] [Accepted: 11/16/2022] [Indexed: 11/19/2022] Open
Abstract
The use of chemical pesticides to control the occurrence of mycotoxigenic fungi in crops has led to environmental and human health issues, driving the agriculture sector to a more sustainable system. Biocontrol agents such as Bacillus strains and their antimicrobial metabolites have been proposed as alternatives to chemical pesticides. In the present work, a broth obtained from a commercial product containing Bacillus subtilis QST 713 was tested for its ability to inhibit the growth of mycotoxigenic fungi as well as reduce their mycotoxin production. Mass spectrometry analysis of Bacillus subtilis broth allowed to detect the presence of 14 different lipopeptides, belonging to the iturin, fengycin, and surfactin families, already known for their antifungal properties. Bacillus subtilis broth demonstrated to be a useful tool to inhibit the growth of some of the most important mycotoxigenic fungi such as Aspergillus flavus, Fusarium verticillioides, Fusarium graminearum, Aspergillus carbonarius, and Alternaria alternata. In addition, cell-free Bacillus subtilis broth provided the most promising results against the growth of Fusarium graminearum and Alternaria alternata, where the radial growth was reduced up to 86% with respect to the untreated test. With regard to the mycotoxin reduction, raw Bacillus subtilis broth completely inhibited the production of aflatoxin B1, deoxynivalenol, zearalenone, and tenuazonic acid. Cell-free broth provided promising inhibitory properties toward all of the target mycotoxins, even if the results were less promising than the corresponding raw broth. In conclusion, this work showed that a commercial Bacillus subtilis, characterized by the presence of different lipopeptides, was able to reduce the growth of the main mycotoxigenic fungi and inhibit the production of related mycotoxins.
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Affiliation(s)
- Terenzio Bertuzzi
- Department of Animal Science, Food and Nutrition, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy
| | - Giulia Leni
- Department of Animal Science, Food and Nutrition, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy
- Correspondence:
| | - Giulia Bulla
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy
| | - Paola Giorni
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy
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Malatinský T, Valachová D, Pinčeková L, Scherhaufer D, Olejníková P, Májeková M, Vargová J, Gaálová-Radochová B, Bujdáková H, Nováčiková J, Farley AJM, Berkeš D, Jakubec P, Kolarovič A, Caletková O. Synthesis and structure-activity relationship of berkeleylactone A-derived antibiotics. Org Biomol Chem 2022; 20:7821-7832. [PMID: 36169622 DOI: 10.1039/d2ob01452a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Berkeleylactone A is a potent 16-membered macrolactone antibiotic, recently isolated from a coculture of Berkeley Pit Lake fungi. Although its antimicrobial activity has already been investigated, little is known about the structure-activity relationship. Based on our previous synthetic studies, a series of berkeleylactone A derivatives were synthesized and evaluated for their in vitro antimicrobial activities against methicillin-sensitive and methicillin-resistant Staphylococcus aureus (MRSA) strains. Our data confirmed the essential role of the embedded conjugated system and suggest a reversible sulfa-protection of the Michael acceptor as a viable option. Structurally simplified achiral macrolactam 8 showed the best inhibitory activity against S. aureus L12 (MRSA) with MIC50 values of 0.39 μg mL-1, 8-fold lower than those of berkeleylactone A. These studies may be of value in the development of more advanced candidates for antibiotic applications.
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Affiliation(s)
- Tomáš Malatinský
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Dominika Valachová
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Lucia Pinčeková
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - David Scherhaufer
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Magdaléna Májeková
- Institute of Experimental Pharmacology & Toxicology, Centre of Experimental Medicine SAS, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Jarmila Vargová
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Barbora Gaálová-Radochová
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Helena Bujdáková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Jana Nováčiková
- Central Laboratories, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Alistair J M Farley
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
| | - Dušan Berkeš
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Pavol Jakubec
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Andrej Kolarovič
- Department of Chemistry, Faculty of Education, Trnava University, Priemyselná 4, 918 43 Trnava, Slovakia
| | - Oľga Caletková
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
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Zhou J, Xie Y, Liao Y, Li X, Li Y, Li S, Ma X, Lei S, Lin F, Jiang W, He YQ. Characterization of a Bacillus velezensis strain isolated from Bolbostemmatis Rhizoma displaying strong antagonistic activities against a variety of rice pathogens. Front Microbiol 2022; 13:983781. [PMID: 36246295 PMCID: PMC9555170 DOI: 10.3389/fmicb.2022.983781] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/30/2022] [Indexed: 11/25/2022] Open
Abstract
Biological control is an effective measure in the green control of rice diseases. To search for biocontrol agents with broad-spectrum and high efficiency against rice diseases, in this study, a strain of antagonistic bacterium BR-01 with strong inhibitory effect against various rice diseases was isolated from Bolbostemmatis Rhizoma by plate confrontation method. The strain was identified as Bacillus velezensis by morphological observation, physiological and biochemical identification, and molecular characterization by 16S rDNA and gyrB gene sequencing analysis. The confrontation test (dual culture) and Oxford cup assays demonstrated that B. velezensis BR-01 had strong antagonistic effects on Magnaporthe oryzae, Ustilaginoidea virens, Fusarium fujikuroi, Xanthomonas oryzae pv. Oryzicola, and Xanthomonas oryzae pv. oryzae, the major rice pathogens. The genes encoding antimicrobial peptides (ituA, ituD, bmyB, bmyC, srfAA, fenB, fenD, bacA, and bacD) were found in B. velezensis BR-01 by PCR amplification with specific primers. B. velezensis BR-01 could produce protease, cellulase, β-1,3-glucanase, chitinase, indoleacetic acid, siderophore, and 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and might produce three lipopeptide antibiotics, surfactin, iturin, and fengycin based on Liquid chromatography–mass spectrometry (LC-MS) results. Furthermore, the plant assays showed that B. velezensis BR-01 had significant control effects on rice bacterial blight and bacterial leaf streak by pot experiments in greenhouse. In conclusion, B. velezensis BR-01 is a broad-spectrum antagonistic bacterium and has the potential as the ideal biocontrol agent in controlling multiple rice diseases with high efficiency.
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Affiliation(s)
- Jianping Zhou
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
| | - Yunqiao Xie
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Yuhong Liao
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Xinyang Li
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Yiming Li
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
| | - Shuping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
| | - Xiuguo Ma
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Shimin Lei
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Fei Lin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Wei Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
- *Correspondence: Wei Jiang,
| | - Yong-Qiang He
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
- Yong-Qiang He,
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14
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Li HY, Yang WQ, Zhou XZ, Shao F, Shen T, Guan HY, Zheng J, Zhang LM. Antibacterial and Antifungal Sesquiterpenoids: Chemistry, Resource, and Activity. Biomolecules 2022; 12:1271. [PMID: 36139108 PMCID: PMC9496053 DOI: 10.3390/biom12091271] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/06/2022] [Accepted: 09/06/2022] [Indexed: 11/29/2022] Open
Abstract
Infectious diseases caused by bacteria and fungi are threatening human health all over the world. It is an increasingly serious problem that the efficacies of some antibacterial and antifungal agents have been weakened by the drug resistance of some bacteria and fungi, which makes a great need for new antibiotics. Sesquiterpenoids, with abundant structural skeleton types and a wide range of bioactivities, are considered as good candidates to be antibacterial and antifungal agents. In the past decades, many sesquiterpenoids were isolated from plants and fungi that exhibited good antibacterial and antifungal activities. In this review, the names, source, structures, antibacterial and antifungal degrees, and mechanisms of sesquiterpenoids with antibacterial and antifungal activity from 2012 to 2022 are summarized, and the structure-activity relationship of these sesquiterpenoids against bacteria and fungi is also discussed.
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Affiliation(s)
- Hang-Ying Li
- College of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
- Ningxia Research Center of Modern Hui Medicine Engineering and Technology, Ningxia Medical University, Yinchuan 750004, China
- Key Laboratory of Ningxia Ethnomedicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan 750004, China
| | - Wen-Qian Yang
- College of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Xin-Zhu Zhou
- College of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Fei Shao
- College of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Tong Shen
- College of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Hui-Ying Guan
- College of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Jie Zheng
- College of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
- Ningxia Research Center of Modern Hui Medicine Engineering and Technology, Ningxia Medical University, Yinchuan 750004, China
- Key Laboratory of Ningxia Ethnomedicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan 750004, China
| | - Li-Ming Zhang
- College of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
- Ningxia Research Center of Modern Hui Medicine Engineering and Technology, Ningxia Medical University, Yinchuan 750004, China
- Key Laboratory of Ningxia Ethnomedicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan 750004, China
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Polonio JC, Ribeiro MADS, Fávaro-Polonio CZ, Meurer EC, Azevedo JL, Golias HC, Pamphile JA. Differential Chemical Profile of Metabolite Extracts Produced by the Diaporthe citri (G-01) Endophyte Mediated by Varying the Fermented Broth pH. Metabolites 2022; 12:metabo12080692. [PMID: 35893260 PMCID: PMC9330126 DOI: 10.3390/metabo12080692] [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: 06/04/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 11/16/2022] Open
Abstract
Endophytic microorganisms show great potential for biotechnological exploitation because they are able to produce a wide range of secondary compounds involved in endophyte−plant adaptation, and their interactions with other living organisms that share the same microhabitat. Techniques used to chemically extract these compounds often neglect the intrinsic chemical characteristics of the molecules involved, such as the ability to form conjugate acids or bases and how they influence the solubilities of these molecules in organic solvents. Therefore, in this study, we aimed to evaluate how the pH of the fermented broth affects the process used to extract the secondary metabolites of the Diaporthe citri strain G-01 endophyte with ethyl acetate as the organic solvent. The analyzed samples, conducted by direct-infusion electrospray-ionization mass spectrometry, were grouped according to the pH of the fermented broth (i.e., <7 and ≥7). A more extreme pH (i.e., 2 or 12) was found to affect the chemical profile of the sample. Moreover, statistical analysis enabled us to determine the presence or absence of ions of high importance; for example, ions at 390.7 and 456.5 m/z were observed mainly at acidic pH, while 226.5, 298.3, and 430.1 m/z ions were observed at pH ≥ 7. Extraction at a pH between 4 and 9 may be of interest for exploring the differential secondary metabolites produced by endophytes. Furthermore, pH influences the chemical phenotype of the fungal metabolic extract.
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Affiliation(s)
- Julio Cesar Polonio
- Laboratory of Microbial Biotechnology LBIOMIC/UEM, Departamento de Biotecnologia Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil; (M.A.d.S.R.); (C.Z.F.-P.); (H.C.G.)
- Correspondence: ; Tel.: +55-44-3011-4683 or +55-44-99848-1990
| | - Marcos Alessandro dos Santos Ribeiro
- Laboratory of Microbial Biotechnology LBIOMIC/UEM, Departamento de Biotecnologia Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil; (M.A.d.S.R.); (C.Z.F.-P.); (H.C.G.)
- Laboratory of Mass Spectrometry “LabFenn”, Campus de Jandaia do Sul, Universidade Federal do Paraná, Jandaia do Sul 86900-000, Paraná, Brazil;
| | - Cintia Zani Fávaro-Polonio
- Laboratory of Microbial Biotechnology LBIOMIC/UEM, Departamento de Biotecnologia Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil; (M.A.d.S.R.); (C.Z.F.-P.); (H.C.G.)
| | - Eduardo Cesar Meurer
- Laboratory of Mass Spectrometry “LabFenn”, Campus de Jandaia do Sul, Universidade Federal do Paraná, Jandaia do Sul 86900-000, Paraná, Brazil;
| | - João Lúcio Azevedo
- Departamento de Genética, Escola Superior de Agricultura “Luiz de Queiroz”—USP, Piracicaba 13418-900, São Paulo, Brazil;
| | - Halison Correia Golias
- Laboratory of Microbial Biotechnology LBIOMIC/UEM, Departamento de Biotecnologia Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil; (M.A.d.S.R.); (C.Z.F.-P.); (H.C.G.)
| | - João Alencar Pamphile
- Laboratory of Microbial Biotechnology LBIOMIC/UEM, Departamento de Biotecnologia Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil; (M.A.d.S.R.); (C.Z.F.-P.); (H.C.G.)
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Leng J, Yu L, Dai Y, Leng Y, Wang C, Chen Z, Wisniewski M, Wu X, Liu J, Sui Y. Recent advances in research on biocontrol of postharvest fungal decay in apples. Crit Rev Food Sci Nutr 2022; 63:10607-10620. [PMID: 35608023 DOI: 10.1080/10408398.2022.2080638] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Apple is the largest fruit crop produced in temperate regions and is a popular fruit worldwide. It is, however, susceptible to a variety of postharvest fungal pathogens, including Penicillium expansum, Botrytis cinerea, Botryosphaeria dothidea, Monilia spp., and Alternaria spp. Decays resulting from fungal infections severely reduce apple quality and marketable yield. Biological control utilizing bacterial and fungal antagonists is an eco-friendly and effective method of managing postharvest decay in horticultural crops. In the current review, research on the pathogenesis of major decay fungi and isolation of antagonists used to manage postharvest decay in apple is presented. The mode of action of postharvest biocontrol agents (BCAs), including recent molecular and genomic studies, is also discussed. Recent research on the apple microbiome and its relationship to disease management is highlighted, and the use of additives and physical treatments to enhance biocontrol efficacy of BCAs is reviewed. Biological control is a critical component of an integrated management system for the sustainable approaches to apple production. Additional research will be required to explore the feasibility of developing beneficial microbial consortia and novel antimicrobial compounds derived from BCAs for postharvest disease management, as well as genetic approaches, such as the use of CRISPR/Cas9 technology.
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Affiliation(s)
- Jinsong Leng
- Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| | - Longfeng Yu
- School of Biotechnology and Bioengineering, West Yunnan University, Lincang, Yunan, China
| | - Yuan Dai
- Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| | - Yan Leng
- School of Biotechnology and Bioengineering, West Yunnan University, Lincang, Yunan, China
| | - Chaowen Wang
- School of Biotechnology and Bioengineering, West Yunnan University, Lincang, Yunan, China
| | - Zhuo Chen
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou, China
| | - Michael Wisniewski
- Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Xuehong Wu
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Jia Liu
- Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| | - Yuan Sui
- Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
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Ma K, Chen W, Yan SQ, Liu ZZ, Lin XQ, Zhang JB, Gao Y, Wang T, Zhang JG, Yang YJ. Purification, Characterization, Mode of Action, and Application of Jileicin, a Novel Antimicrobial from Paenibacillus jilinensis YPG26. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5570-5578. [PMID: 35499918 PMCID: PMC9104118 DOI: 10.1021/acs.jafc.2c01458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Antimicrobial compounds from the commensal gut microbiota have gained much attention due to their multifunctionality in maintaining good health in the host and killing multidrug-resistant bacteria. Our previous study showed that Paenibacillus jilinensis YPG26 isolated from chicken intestine can antagonize multiple pathogens. Herein, we characterized a bacteriocin-like inhibitory substance, jileicin, purified from P. jilinensis YPG26. Mass spectrometry analysis revealed that jileicin was a protein consisting of 211 amino acids, which showed 88.98% identity to the SIMPL domain-containing protein. The jileicin showed a relatively broad-spectrum antibacterial ability, especially against enterococci. Additionally, the jileicin exhibited good stability after various treatments, no detectable resistance, no significant cytotoxicity, and very low levels of hemolytic activity. The mode of action against Enterococcus faecium demonstrated that jileicin could destroy cell membrane integrity, increase cell membrane permeability, and eventually lead to cell death. Furthermore, jileicin was efficient in controlling the growth of E. faecium in milk. In conclusion, jileicin, as a newly identified antibacterial agent, is expected to be a promising candidate for application in the food, pharmaceutical, and biomedical industries.
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Bellotto O, Semeraro S, Bandiera A, Tramer F, Pavan N, Marchesan S. Polymer Conjugates of Antimicrobial Peptides (AMPs) with d-Amino Acids (d-aa): State of the Art and Future Opportunities. Pharmaceutics 2022; 14:pharmaceutics14020446. [PMID: 35214178 PMCID: PMC8879212 DOI: 10.3390/pharmaceutics14020446] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/11/2022] [Accepted: 02/14/2022] [Indexed: 12/15/2022] Open
Abstract
In recent years, antimicrobial peptides (AMPs) have enjoyed a renaissance, as the world is currently facing an emergency in terms of severe infections that evade antibiotics’ treatment. This is due to the increasing emergence and spread of resistance mechanisms. Covalent conjugation with polymers is an interesting strategy to modulate the pharmacokinetic profile of AMPs and enhance their biocompatibility profile. It can also be an effective approach to develop active coatings for medical implants and devices, and to avoid biofilm formation on their surface. In this concise review, we focus on the last 5 years’ progress in this area, pertaining in particular to AMPs that contain d-amino acids, as well as their role, and the advantages that may arise from their introduction into AMPs.
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Affiliation(s)
- Ottavia Bellotto
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy; (O.B.); (S.S.)
| | - Sabrina Semeraro
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy; (O.B.); (S.S.)
| | - Antonella Bandiera
- Life Sciences Department, University of Trieste, 34127 Trieste, Italy; (A.B.); (F.T.)
| | - Federica Tramer
- Life Sciences Department, University of Trieste, 34127 Trieste, Italy; (A.B.); (F.T.)
| | - Nicola Pavan
- Medical, Surgical and Health Sciences Department, University of Trieste, 34127 Trieste, Italy;
| | - Silvia Marchesan
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy; (O.B.); (S.S.)
- Correspondence:
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