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Hirozawa MT, Ono MA, de Souza Suguiura IM, Bordini JG, Hirooka EY, Ono EYS. Antifungal effect and some properties of cell-free supernatants of two Bacillus subtilis isolates against Fusarium verticillioides. Braz J Microbiol 2024:10.1007/s42770-024-01414-x. [PMID: 38862737 DOI: 10.1007/s42770-024-01414-x] [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: 02/15/2024] [Accepted: 06/03/2024] [Indexed: 06/13/2024] Open
Abstract
Fusarium verticillioides causes significant decrease in corn yield and quality, and produces fumonisins, which represent a serious risk to human and animal health. Bacillus species can be an effective and environmentally friendly alternative for F. verticillioides biological control. In this study, some properties of cell-free supernatants (CFSs) of two Bacillus spp. identified as Bacillus subtilis (NT1, NT2) as well as the antifungal effect against F. verticillioides 97L were evaluated. B. subtilis NT1 and NT2 were isolated from commercially available fermented whole soybeans (Nattō). Antifungal activity was observed in both CFSs of B. subtilis isolates (50-59 mm) obtained by co-culture suggesting that antifungal compound production depends on interaction between bacteria and fungi. Cell-free supernatants from the two B. subtilis isolates inhibited mycelial growth (77%-94%) and conidial germination (22%-74%) of F. verticillioides 97L. In addition, CFSs caused significant morphological changes such as distorted and collapsed hyphae with wrinkled surfaces and the presence of a large amount of extracellular material compared to the control without CFSs. Both B. subtilis isolates (NT1 and NT2) produced extracellular proteases, biosurfactants and polar low molecular weight compounds that probably act synergistically and may contribute to the antifungal activity. Antifungal compounds showed heat and pH stability and resistance to proteolytic enzymes. Furthermore, antifungal compounds showed high polarity, high affinity to water and a molecular weight less than 10 kDa. These results indicated that the two B. subtilis (NT1 and NT2) have potential as biocontrol agents for F. verticillioides.
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Affiliation(s)
- Melissa Tiemi Hirozawa
- Department of Biochemistry and Biotechnology, State University of Londrina, P.O. box 10.011, Londrina, Paraná, 86057-970, Brazil
| | - Mario Augusto Ono
- Department of Immunology, Parasitology and General Pathology, P.O. box 10.011, Londrina, Paraná, 86057-970, Brazil
| | | | - Jaqueline Gozzi Bordini
- Department of Biochemistry and Biotechnology, State University of Londrina, P.O. box 10.011, Londrina, Paraná, 86057-970, Brazil
| | - Elisa Yoko Hirooka
- Department of Food Science and Technology, State University of Londrina, P.O. box 10.011, Londrina, Paraná, 86057-970, Brazil
| | - Elisabete Yurie Sataque Ono
- Department of Biochemistry and Biotechnology, State University of Londrina, P.O. box 10.011, Londrina, Paraná, 86057-970, Brazil.
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2
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Ali AO, Awla HK, Rashid TS. Investigating the in vivo biocontrol and growth-promoting efficacy of Bacillus sp. and Pseudomonas fluorescens against olive knot disease. Microb Pathog 2024; 191:106645. [PMID: 38631412 DOI: 10.1016/j.micpath.2024.106645] [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: 02/02/2024] [Revised: 04/04/2024] [Accepted: 04/11/2024] [Indexed: 04/19/2024]
Abstract
Olive knot disease, caused by Pseudomonas savastanoi, poses a significant threat to olive cultivation, necessitating sustainable alternatives to conventional chemical control. This study investigates the biocontrol effectiveness of Bacillus sp. (Og2) and Pseudomonas fluorescens (Oq5), alone and combined, against olive knot disease. Olive plants were sprayed with 5 ml of the bacteria until uniformly wet, with additional application to the soil surface. Pathogen injection occurred 24 h later. The results revealed that treating plants with a combination of both bacteria provided the highest reduction in disease severity (89.58 %), followed by P. fluorescens alone (69.38 %). Significant improvements were observed in shoot height, particularly with the combination of Bacillus sp. and P. fluorescens. The root length of olive seedlings treated with P. fluorescens and Bacillus sp., either alone or in combination, was significantly longer compared to the control and pathogen-treated seedlings. In terms of root dry weight, the most effective treatments were treated with P. fluorescens was the highest (82.94 g) among all treatments followed by the combination of both isolates with seedlings inoculated with P. savastanoi. These findings underscore the potential of Bacillus sp. and Pseudomonas fluorescens as effective biocontrol agents against olive knot disease and promoting olive seedlings growth, providing a sustainable and environmentally friendly approach to disease management.
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Affiliation(s)
- Avin Omer Ali
- Department of Plant Protection, College of Agricultural Engineering Sciences, Salahaddin University, Erbil, Iraq
| | | | - Tavga Sulaiman Rashid
- Department of Plant Protection, College of Agricultural Engineering Sciences, Salahaddin University, Erbil, Iraq.
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3
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Lagzian A, Riseh RS, Sarikhan S, Ghorbani A, Khodaygan P, Borriss R, Guzzi PH, Veltri P. Genome mining conformance to metabolite profile of Bacillus strains to control potato pathogens. Sci Rep 2023; 13:19095. [PMID: 37925555 PMCID: PMC10625545 DOI: 10.1038/s41598-023-46672-1] [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: 04/27/2023] [Accepted: 11/03/2023] [Indexed: 11/06/2023] Open
Abstract
Biocontrol agents are safe and effective methods for controlling plant disease pathogens, such as Fusarium solani, which causes dry wilt, and Pectobacterium spp., responsible for potato soft rot disease. Discovering agents that can effectively control both fungal and bacterial pathogens in potatoes has always presented a challenge. Biological controls were investigated using 500 bacterial strains isolated from rhizospheric microbial communities, along with two promising biocontrol strains: Pseudomonas (T17-4 and VUPf5). Bacillus velezensis (Q12 and US1) and Pseudomonas chlororaphis VUPf5 exhibited the highest inhibition of fungal growth and pathogenicity in both laboratory (48%, 48%, 38%) and greenhouse (100%, 85%, 90%) settings. Q12 demonstrated better control against bacterial pathogens in vivo (approximately 50%). Whole-genome sequencing of Q12 and US1 revealed a genome size of approximately 4.1 Mb. Q12 had 4413 gene IDs and 4300 coding sequences, while US1 had 4369 gene IDs and 4255 coding sequences. Q12 exhibited a higher number of genes classified under functional subcategories related to stress response, cell wall, capsule, levansucrase synthesis, and polysaccharide metabolism. Both Q12 and US1 contained eleven secondary metabolite gene clusters as identified by the antiSMASH and RAST servers. Notably, Q12 possessed the antibacterial locillomycin and iturin A gene clusters, which were absent in US1. This genetic information suggests that Q12 may have a more pronounced control over bacterial pathogens compared to US1. Metabolic profiling of the superior strains, as determined by LC/MS/MS, validated our genetic findings. The investigated strains produced compounds such as iturin A, bacillomycin D, surfactin, fengycin, phenazine derivatives, etc. These compounds reduced spore production and caused deformation of the hyphae in F. solani. In contrast, B. velezensis UR1, which lacked the production of surfactin, fengycin, and iturin, did not affect these structures and failed to inhibit the growth of any pathogens. Our findings suggest that locillomycin and iturin A may contribute to the enhanced control of bacterial pectolytic rot by Q12.
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Affiliation(s)
- Arezoo Lagzian
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Roohallah Saberi Riseh
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Sajjad Sarikhan
- Molecular Bank, Iranian Biological Resource Center (IBRC), ACECR, Tehran, Iran
| | - Abozar Ghorbani
- Nuclear Agriculture Research School, Nuclear Science and Technology Research Institute, Karaj, Iran.
| | - Pejman Khodaygan
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Rainer Borriss
- Institute of Biology, Humboldt University Berlin, Berlin, Germany
| | - Pietro Hiram Guzzi
- Department of Surgical and Medical Sciences, University of Catanzaro, Catanzaro, Italy.
| | - Pierangelo Veltri
- Department of Informatics Modeling Electronics and System Engineering, University of Calabria, Calabria, Italy
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Etemadzadeh SS, Emtiazi G, Soltanian S. Production of biosurfactant by salt-resistant Bacillus in lead-supplemented media: application and toxicity. Int Microbiol 2023; 26:869-880. [PMID: 36810942 DOI: 10.1007/s10123-023-00334-4] [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: 09/13/2022] [Revised: 01/29/2023] [Accepted: 02/02/2023] [Indexed: 02/24/2023]
Abstract
A group of biosurfactants are lipopeptides that are produced by some microorganisms, especially Bacillus strains. They are new bioactive agents with anticancer, antibacterial, antifungal, and antiviral activities. Also, they are used in sanitation industries. In this study, a lead-resistant strain of Bacillus halotolerans was isolated for lipopeptide production. This isolate exhibited metal resistance (lead, calcium, chromium, nickel, copper, manganese, and mercury), salt tolerance (12%), and antimicrobial activities against Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Saccharomyces cerevisiae. The production of lipopeptide was optimized, concentrated, and then extracted from the polyacrylamide gel in a simple way for the first time. The nature of the purified lipopeptide was determined by FTIR, GC/MS, and HPLC analyses. The purified lipopeptide indicated significant antioxidant properties (90.38% at a concentration of 0.8 mg ml-1). Also, it had anticancer activity by apoptosis (flow cytometry analysis) in MCF-7 cells, while it had no cytotoxicity on HEK-293 normal cells. Therefore, Bacillus halotolerans lipopeptide has the potential to be used as an antioxidant, antimicrobial, or anticancer agent in the medical and food industries.
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Affiliation(s)
- Shekoofeh Sadat Etemadzadeh
- Department of Cellular and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.
| | - Giti Emtiazi
- Department of Cellular and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Sara Soltanian
- Department of Biology, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran
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Puan SL, Erriah P, Baharudin MMAA, Yahaya NM, Kamil WNIWA, Ali MSM, Ahmad SA, Oslan SN, Lim S, Sabri S. Antimicrobial peptides from Bacillus spp. and strategies to enhance their yield. Appl Microbiol Biotechnol 2023; 107:5569-5593. [PMID: 37450018 DOI: 10.1007/s00253-023-12651-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023]
Abstract
Antibiotic resistance is a growing concern that is affecting public health globally. The search for alternative antimicrobial agents has become increasingly important. Antimicrobial peptides (AMPs) produced by Bacillus spp. have emerged as a promising alternative to antibiotics, due to their broad-spectrum antimicrobial activity against resistant pathogens. In this review, we provide an overview of Bacillus-derived AMPs, including their classification into ribosomal (bacteriocins) and non-ribosomal peptides (lipopeptides and polyketides). Additionally, we delve into the molecular mechanisms of AMP production and describe the key biosynthetic gene clusters involved. Despite their potential, the low yield of AMPs produced under normal laboratory conditions remains a challenge to large-scale production. This review thus concludes with a comprehensive summary of recent studies aimed at enhancing the productivity of Bacillus-derived AMPs. In addition to medium optimization and genetic manipulation, various molecular strategies have been explored to increase the production of recombinant antimicrobial peptides (AMPs). These include the selection of appropriate expression systems, the engineering of expression promoters, and metabolic engineering. Bacillus-derived AMPs offer great potential as alternative antimicrobial agents, and this review provides valuable insights on the strategies to enhance their production yield, which may have significant implications for combating antibiotic resistance. KEY POINTS: • Bacillus-derived AMP is a potential alternative therapy for resistant pathogens • Bacillus produces two main classes of AMPs: ribosomal and non-ribosomal peptides • AMP yield can be enhanced using culture optimization and molecular approaches.
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Affiliation(s)
- Sheau Ling Puan
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Pirasannah Erriah
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Mohamad Malik Al-Adil Baharudin
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Normi Mohd Yahaya
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Wan Nur Ismah Wan Ahmad Kamil
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Mohd Shukuri Mohamad Ali
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Siti Aqlima Ahmad
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Siti Nurbaya Oslan
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Sooa Lim
- Department of Pharmaceutical Engineering, Hoseo University, 31499, Asan-Si, Chungnam, Republic of Korea
| | - Suriana Sabri
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia.
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia.
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Salazar B, Ortiz A, Keswani C, Minkina T, Mandzhieva S, Pratap Singh S, Rekadwad B, Borriss R, Jain A, Singh HB, Sansinenea E. Bacillus spp. as Bio-factories for Antifungal Secondary Metabolites: Innovation Beyond Whole Organism Formulations. MICROBIAL ECOLOGY 2023; 86:1-24. [PMID: 35604432 DOI: 10.1007/s00248-022-02044-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
Several fungi act as parasites for crops causing huge annual crop losses at both pre- and post-harvest stages. For years, chemical fungicides were the solution; however, their wide use has caused environmental contamination and human health problems. For this reason, the use of biofungicides has been in practice as a green solution against fungal phytopathogens. In the context of a more sustainable agriculture, microbial biofungicides have the largest share among the commercial biocontrol products that are available in the market. Precisely, the genus Bacillus has been largely studied for the management of plant pathogenic fungi because they offer a chemically diverse arsenal of antifungal secondary metabolites, which have spawned a heightened industrial engrossment of it as a biopesticide. In this sense, it is indispensable to know the wide arsenal that Bacillus genus has to apply these products for sustainable agriculture. Having this idea in our minds, in this review, secondary metabolites from Bacillus having antifungal activity are chemically and structurally described giving details of their action against several phytopathogens. Knowing the current status of Bacillus secreted antifungals is the base for the goal to apply these in agriculture and it is addressed in depth in the second part of this review.
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Affiliation(s)
- Bruno Salazar
- Facultad De Ciencias Químicas, Benemérita Universidad Autónoma De Puebla, 72590, Puebla, Pue, México
| | - Aurelio Ortiz
- Facultad De Ciencias Químicas, Benemérita Universidad Autónoma De Puebla, 72590, Puebla, Pue, México
| | - Chetan Keswani
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, 344006, Russia
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, 344006, Russia
| | - Saglara Mandzhieva
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, 344006, Russia
| | - Satyendra Pratap Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Bhagwan Rekadwad
- Division of Microbiology and Biotechnology, Yenepoya Research Centre, Yenepoya (Deemed to Be University), Mangalore, 575018, Karnataka, India
| | - Rainer Borriss
- Institut Für Agrar- Und Gartenbauwissenschaften, Fachgebiet Phytomedizin, Humboldt-Universität Zu Berlin, Lentze-Allee 55-57, 14195, Berlin, Germany
| | - Akansha Jain
- Division of Plant Biology, Bose Institute, CIT Road, Kankurgachi, Kolkata, India
| | - Harikesh B Singh
- Department of Biotechnology, GLA University, Mathura, 281406, India
| | - Estibaliz Sansinenea
- Facultad De Ciencias Químicas, Benemérita Universidad Autónoma De Puebla, 72590, Puebla, Pue, México.
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Rosić I, Nikolić I, Ranković T, Anteljević M, Medić O, Berić T, Stanković S. Genotyping-driven diversity assessment of biocontrol potent Bacillus spp. strain collection as a potential method for the development of strain-specific biomarkers. Arch Microbiol 2023; 205:114. [PMID: 36907935 DOI: 10.1007/s00203-023-03460-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 02/01/2023] [Accepted: 03/01/2023] [Indexed: 03/14/2023]
Abstract
Bacillus species are among the most researched and frequently applied biocontrol agents. To estimate their potential as environmentally friendly microbial-based products, reliable and rapid plant colonization monitoring methods are essential. We evaluated repetitive element-based (rep) and Random Amplified Polymorphic DNA (RAPD) PCR (Polymerase Chain Reaction) genotyping in a diversity assessment of 251 strains from bulk soil, straw, and manure samples across Serbia, highlighting their discriminative force and the presence of unique bands. RAPD 272, OPG 5, and (GTG)5 primers were most potent in revealing the high diversity of a sizable environmental Bacillus spp. collection. RAPD 272 also amplified a unique band for a proven biocontrol strain, opening the possibility of Sequence Characterized Amplified Region (SCAR) marker design. That will enable colonization studies using the SCAR marker for its specific detection. This study provides a guide for primer selection for diversity and monitoring studies of environmental Bacillus spp. isolates.
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Affiliation(s)
- Iva Rosić
- University of Belgrade - Faculty of Biology, Center for Biological Control and Plant Growth Promotion, University of Belgrade, Studentski Trg 16, 11000, Belgrade, Serbia.
| | - Ivan Nikolić
- University of Belgrade - Faculty of Biology, Center for Biological Control and Plant Growth Promotion, University of Belgrade, Studentski Trg 16, 11000, Belgrade, Serbia
| | - Tamara Ranković
- University of Belgrade - Faculty of Biology, Center for Biological Control and Plant Growth Promotion, University of Belgrade, Studentski Trg 16, 11000, Belgrade, Serbia
| | - Marina Anteljević
- University of Belgrade - Faculty of Biology, Center for Biological Control and Plant Growth Promotion, University of Belgrade, Studentski Trg 16, 11000, Belgrade, Serbia
| | - Olja Medić
- University of Belgrade - Faculty of Biology, Center for Biological Control and Plant Growth Promotion, University of Belgrade, Studentski Trg 16, 11000, Belgrade, Serbia
| | - Tanja Berić
- University of Belgrade - Faculty of Biology, Center for Biological Control and Plant Growth Promotion, University of Belgrade, Studentski Trg 16, 11000, Belgrade, Serbia
| | - Slaviša Stanković
- University of Belgrade - Faculty of Biology, Center for Biological Control and Plant Growth Promotion, University of Belgrade, Studentski Trg 16, 11000, Belgrade, Serbia
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Cui Z, Hu L, Zeng L, Meng W, Guo D, Sun L. Isolation and characterization of Priestia megaterium KD7 for the biological control of pear fire blight. Front Microbiol 2023; 14:1099664. [PMID: 36970697 PMCID: PMC10033528 DOI: 10.3389/fmicb.2023.1099664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/21/2023] [Indexed: 03/11/2023] Open
Abstract
Erwinia amylovora is a plant pathogen that causes fire blight disease in Rosaceous plants, such as pear and apple. To develop an effective biocontrol method to suppress E. amylovora, a total of 16 bacteria were isolated from pear orchard soil in China and screened for antagonistic activity in vitro. Among them, 9 isolates that exhibited antagonistic activity against E. amylovora were identified, including Bacillus atrophaeus, Priestia megaterium (previously known as Bacillus megaterium) and Serratia marcescens based on the partial 16S rDNA sequence analysis and similarity search. The plate confrontation experiments showed that strain 8 (P. megaterium strain KD7) had strong antagonistic activity against E. amylovora. The methanolic extract from cell-free supernatant of strain KD7 displayed high antibacterial activities against E. amylovora. Furthermore, the active compounds of strain KD7 were separated by thin layer chromatography (TLC) and the amino acids were detected by the presence of a spot with retention factor (Rf) of 0.71. Next, three lipopeptides were identified with high-resolution mass spectrometry (HRMS), including C13-surfactin [M+H]+ at m/z 1008.14, C15-surfactin [M+H]+ at m/z 1036.50, and C14-iturin A [M+H]+ at m/z 1043.17. Strain KD7 showed multiple antibiotic resistance, such as ampicillin, erythromycin, penicillin and tetracycline. The detached pear leaves, twigs and fruits assay showed that both protective and curative action with strain KD7 had the ability to decrease the development of fire blight. Taken together, P. megaterium strain KD7 is a potential effective biocontrol agent against fire blight.
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Suppression of Fusarium Wilt in Watermelon by Bacillus amyloliquefaciens DHA55 through Extracellular Production of Antifungal Lipopeptides. J Fungi (Basel) 2023; 9:jof9030336. [PMID: 36983504 PMCID: PMC10053319 DOI: 10.3390/jof9030336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Fusarium wilt caused by Fusarium oxysporum f. sp. niveum is one of the most devastating fungal diseases affecting watermelon (Citrullus lanatus L.). The present study aimed to identify potent antagonistic bacterial strains with substantial antifungal activity against F. oxysporum f. sp. niveum and to explore their potential for biocontrol of Fusarium wilt in watermelon. Out of 77 isolates from watermelon rhizosphere, six bacterial strains—namely, DHA4, DHA6, DHA10, DHA12, DHA41, and DHA55—exhibited significant antifungal activity against F. oxysporum f. sp. niveum, as well as other phytopathogenic fungi, including Didymella bryoniae, Sclerotinia sclerotiorum, Fusarium graminearum, and Rhizoctonia solani. These Gram-positive, rod-shaped, antagonistic bacterial strains were able to produce exo-enzymes (e.g., catalase, protease, and cellulase), siderophore, and indole-3-acetic acid and had the ability to solubilize phosphate. In greenhouse experiments, these antagonistic bacterial strains not only promoted plant growth but also suppressed Fusarium wilt in watermelon. Among these strains, DHA55 was the most effective, achieving the highest disease suppression of 74.9%. Strain DHA55 was identified as Bacillus amyloliquefaciens based on physiological, biochemical, and molecular characterization. B. amyloliquefaciens DHA55 produced various antifungal lipopeptides, including iturin, surfactin, and fengycin, that showed significant antifungal activities against F. oxysporum f. sp. niveum. Microscopic observations revealed that B. amyloliquefaciens DHA55 exhibited an inhibitory effect against F. oxysporum f. sp. niveum on the root surface of watermelon plants. These results demonstrate that B. amyloliquefaciens DHA55 can effectively promote plant growth and suppress the development of watermelon Fusarium wilt, providing a promising agent for the biocontrol of Fusarium wilt in watermelon.
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Rosier A, Pomerleau M, Beauregard PB, Samac DA, Bais HP. Surfactin and Spo0A-Dependent Antagonism by Bacillus subtilis Strain UD1022 against Medicago sativa Phytopathogens. PLANTS (BASEL, SWITZERLAND) 2023; 12:1007. [PMID: 36903868 PMCID: PMC10005099 DOI: 10.3390/plants12051007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/13/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Plant growth-promoting rhizobacteria (PGPR) such as the root colonizers Bacillus spp. may be ideal alternatives to chemical crop treatments. This work sought to extend the application of the broadly active PGPR UD1022 to Medicago sativa (alfalfa). Alfalfa is susceptible to many phytopathogens resulting in losses of crop yield and nutrient value. UD1022 was cocultured with four alfalfa pathogen strains to test antagonism. We found UD1022 to be directly antagonistic toward Collectotrichum trifolii, Ascochyta medicaginicola (formerly Phoma medicaginis), and Phytophthora medicaginis, and not toward Fusarium oxysporum f. sp. medicaginis. Using mutant UD1022 strains lacking genes in the nonribosomal peptide (NRP) and biofilm pathways, we tested antagonism against A. medicaginicola StC 306-5 and P. medicaginis A2A1. The NRP surfactin may have a role in the antagonism toward the ascomycete StC 306-5. Antagonism toward A2A1 may be influenced by B. subtilis biofilm pathway components. The B. subtilis central regulator of both surfactin and biofilm pathways Spo0A was required for the antagonism of both phytopathogens. The results of this study indicate that the PGPR UD1022 would be a good candidate for further investigations into its antagonistic activities against C. trifolii, A. medicaginicola, and P. medicaginis in plant and field studies.
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Affiliation(s)
- Amanda Rosier
- Department of Plant and Soil Sciences, University of Delaware, 311 AP Biopharma, 590 Avenue 1743, Newark, DE 19713, USA
| | - Maude Pomerleau
- Département de Biologie, Bureau D8-1014, Université de Sherbrooke, 2500 boul. Université Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Pascale B. Beauregard
- Département de Biologie, Bureau D8-1014, Université de Sherbrooke, 2500 boul. Université Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Deborah A. Samac
- USDA-ARS Plant Science Research Unit, 1991 Upper Buford Circle, St. Paul, MN 55108, USA
| | - Harsh P. Bais
- Department of Plant and Soil Sciences, University of Delaware, 311 AP Biopharma, 590 Avenue 1743, Newark, DE 19713, USA
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Tsalgatidou PC, Thomloudi EE, Nifakos K, Delis C, Venieraki A, Katinakis P. Calendula officinalis-A Great Source of Plant Growth Promoting Endophytic Bacteria (PGPEB) and Biological Control Agents (BCA). Microorganisms 2023; 11:microorganisms11010206. [PMID: 36677498 PMCID: PMC9865722 DOI: 10.3390/microorganisms11010206] [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: 12/26/2022] [Revised: 01/08/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
The application of beneficial bacteria may present an alternative approach to chemical plant protection and fertilization products as they enhance growth and resistance to biotic and abiotic stresses. Plant growth-promoting bacteria are found in the rhizosphere, epiphytically or endophytically (Plant Growth Promoting Endophytic Bacteria, PGPEB). In the present study, 36 out of 119 isolated endophytic bacterial strains from roots, leaves and flowers of the pharmaceutical plant Calendula officinalis were further identified and classified into Bacillus, Pseudomonas, Pantoea, Stenotrophomonas and Rhizobium genera. Selected endophytes were evaluated depending on positive reaction to different plant growth promoting (PGP) traits, motility, survival rate and inhibition of phytopathogenic fungi in vitro and ex vivo (tomato fruit). Bacteria were further assessed for their plant growth effect on Arabidopsis thaliana seedlings and on seed bio-primed tomato plantlets, in vitro. Our results indicated that many bacterial endophytes increased seed germination, promoted plant growth and changed root structure by increasing lateral root density and length and root hair formation. The most promising antagonistic PGPEB strains (Cal.r.29, Cal.l.30, Cal.f.4, Cal.l.11, Cal.f.2.1, Cal.r.19 and Cal.r.11) are indicated as effective biological control agents (BCA) against Botrytis cinerea on detached tomato fruits. Results underlie the utility of beneficial endophytic bacteria for sustainable and efficient crop production and disease control.
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Affiliation(s)
- Polina C. Tsalgatidou
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
- Department of Agriculture, University of the Peloponnese, 24100 Kalamata, Greece
- Correspondence: (P.C.T.); (A.V.)
| | - Eirini-Evangelia Thomloudi
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
| | - Kallimachos Nifakos
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
- Department of Agriculture, University of the Peloponnese, 24100 Kalamata, Greece
| | - Costas Delis
- Department of Agriculture, University of the Peloponnese, 24100 Kalamata, Greece
| | - Anastasia Venieraki
- Laboratory of Plant Pathology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
- Correspondence: (P.C.T.); (A.V.)
| | - Panagiotis Katinakis
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
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12
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Cortazar-Murillo EM, Méndez-Bravo A, Monribot-Villanueva JL, Garay-Serrano E, Kiel-Martínez AL, Ramírez-Vázquez M, Guevara-Avendaño E, Méndez-Bravo A, Guerrero-Analco JA, Reverchon F. Biocontrol and plant growth promoting traits of two avocado rhizobacteria are orchestrated by the emission of diffusible and volatile compounds. Front Microbiol 2023; 14:1152597. [PMID: 37206331 PMCID: PMC10189041 DOI: 10.3389/fmicb.2023.1152597] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 04/10/2023] [Indexed: 05/21/2023] Open
Abstract
Avocado (Persea americana Mill.) is a tree crop of great social and economic importance. However, the crop productivity is hindered by fast-spreading diseases, which calls for the search of new biocontrol alternatives to mitigate the impact of avocado phytopathogens. Our objectives were to evaluate the antimicrobial activity of diffusible and volatile organic compounds (VOCs) produced by two avocado rhizobacteria (Bacillus A8a and HA) against phytopathogens Fusarium solani, Fusarium kuroshium, and Phytophthora cinnamomi, and assess their plant growth promoting effect in Arabidopsis thaliana. We found that, in vitro, VOCs emitted by both bacterial strains inhibited mycelial growth of the tested pathogens by at least 20%. Identification of bacterial VOCs by gas chromatography coupled to mass spectrometry (GC-MS) showed a predominance of ketones, alcohols and nitrogenous compounds, previously reported for their antimicrobial activity. Bacterial organic extracts obtained with ethyl acetate significantly reduced mycelial growth of F. solani, F. kuroshium, and P. cinnamomi, the highest inhibition being displayed by those from strain A8a (32, 77, and 100% inhibition, respectively). Tentative identifications carried out by liquid chromatography coupled to accurate mass spectrometry of diffusible metabolites in the bacterial extracts, evidenced the presence of some polyketides such as macrolactins and difficidin, hybrid peptides including bacillaene, and non-ribosomal peptides such as bacilysin, which have also been described in Bacillus spp. for antimicrobial activities. The plant growth regulator indole-3-acetic acid was also identified in the bacterial extracts. In vitro assays showed that VOCs from strain HA and diffusible compounds from strain A8a modified root development and increased fresh weight of A. thaliana. These compounds differentially activated several hormonal signaling pathways involved in development and defense responses in A. thaliana, such as auxin, jasmonic acid (JA) and salicylic acid (SA); genetic analyses suggested that developmental stimulation of the root system architecture by strain A8a was mediated by the auxin signaling pathway. Furthermore, both strains were able to enhance plant growth and decreased the symptoms of Fusarium wilt in A. thaliana when soil-inoculated. Collectively, our results evidence the potential of these two rhizobacterial strains and their metabolites as biocontrol agents of avocado pathogens and as biofertilizers.
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Affiliation(s)
| | - Alfonso Méndez-Bravo
- CONACyT – Escuela Nacional de Estudios Superiores, Unidad Morelia, Laboratorio Nacional de Análisis y Síntesis Ecológica, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico
| | | | - Edith Garay-Serrano
- CONACyT – Red de Diversidad Biológica del Occidente Mexicano, Centro Regional del Bajío, Instituto de Ecología, A.C., Pátzcuaro, Michoacán, Mexico
| | - Ana L. Kiel-Martínez
- Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C., Xalapa, Veracruz, Mexico
| | - Mónica Ramírez-Vázquez
- Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C., Xalapa, Veracruz, Mexico
- Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Edgar Guevara-Avendaño
- Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C., Xalapa, Veracruz, Mexico
| | - Alejandro Méndez-Bravo
- Escuela Nacional de Estudios Superiores Unidad Morelia, Laboratorio Nacional de Análisis y Síntesis Ecológica, Universidad Nacional Autónoma de México, Morelia, Mexico
| | - José A. Guerrero-Analco
- Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C., Xalapa, Veracruz, Mexico
- *Correspondence: José A. Guerrero-Analco,
| | - Frédérique Reverchon
- Red de Diversidad Biológica del Occidente Mexicano, Centro Regional del Bajío, Instituto de Ecología, A.C., Pátzcuaro, Michoacán, Mexico
- Frédérique Reverchon,
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13
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Sinha T, Malakar C, Talukdar NC. Mustard seed–associated endophytes suppress Sclerotinia sclerotiorum causing Sclerotinia rot in mustard crop. Int Microbiol 2022:10.1007/s10123-022-00314-0. [PMID: 36542232 DOI: 10.1007/s10123-022-00314-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/08/2022] [Accepted: 12/11/2022] [Indexed: 12/24/2022]
Abstract
Mustard-rapeseed cultivation is affected by Sclerotinia sclerotiorum resulting in loss of oil yield and degradation of crop quality. This study adopted an environment friendly biocontrol approach of screening mustard endophytes against the pathogen. Two bacterial isolates, Bacillus safensis (TS46 bac4) and Bacillus australimaris (SM2) showed potential biocontrol activity under both in vitro and in vivo conditions. Dual culture assay reported 90% inhibition of fungal growth. The bacterial cell free supernatant of isolate SM2 showed 52.89% inhibition and the other isolate TS46 bac4 showed 57.97% inhibition. The crude (10 mg/ml) and purified (10 mg/ml) metabolite extract of SM2 showed 100% and 97% inhibition respectively. Both crude (10 mg/ml) and purified (7.5 mg/ml) metabolite extract of TS46 bac4 exhibited 99% inhibition of the pathogen. Antifungal lipopeptides: surfactin, iturin and fengycin were identified in bacterial metabolite extract of the isolates. Both strains promoted healthy germination and prevented the formation of any disease symptoms in seedling. The selected Bacillus strains applied by spray method showed better results against fungal infection on mustard leaf and stem. Microscopic studies revealed degradation of fungal mycelial growth by both isolates. These findings support the employment of the bacterial strains as potential biocontrol agents to reduce the effects of S. sclerotiorum in mustard-rapeseed.
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Yu R, Zhang M, Ahmed T, Wu Z, Lv L, Zhou G, Li B. Metabolic and Proteomic Profiles Reveal the Response of the ASD-Associated Resistant Strain 6-1 of Lactobacillus plantarum to Propionic Acid. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:17020. [PMID: 36554909 PMCID: PMC9779356 DOI: 10.3390/ijerph192417020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/26/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Autism spectrum disorder (ASD) seriously affects children's health. In our previous study, we isolated and identified a bacterium (Lactobacillus plantarum strain 6-1) that is resistant to propionic acid (PA), which has been reported to play a significant role in the formation of ASD. In order to elucidate the mechanism of the resistance to PA, this study investigated the change in the metabolic and proteomic profile of L. plantarum strain 6-1 in the presence and absence of PA. The results show that 967 and 1078 proteins were specifically identified in the absence and the presence of PA, respectively, while 616 proteins were found under both conditions. Gene ontology enrichment analysis of 130 differentially expressed proteins accumulated in the presence and absence of PA indicated that most of the proteins belong to biological processes, cellular components, and molecular functions. Pathway enrichment analysis showed a great reduction in the metabolic pathway-related proteins when this resistant bacterium was exposed to PA compared to the control. Furthermore, there was an obvious difference in protein-protein interaction networks in the presence and the absence of propionic acid. In addition, there was a change in the metabolic profile of L. plantarum strain 6-1 when this bacterium was exposed to PA compared to the control, while six peaks at 696.46, 1543.022, 1905.241, 2004.277, 2037.374, and 2069.348 m/z disappeared. Overall, the results could help us to understand the mechanism of the resistance of gut bacteria to PA, which will provide a new insight for us to use PA-resistant bacteria to prevent the development of ASD in children.
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Affiliation(s)
- Rongrong Yu
- College of Education, Zhejiang University of Technology, Hangzhou 310032, China
| | - Muchen Zhang
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Temoor Ahmed
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zhifeng Wu
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Luqiong Lv
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Guoling Zhou
- Hangzhou Seventh People’s Hospital (HSPH), Hangzhou 310013, China
| | - Bin Li
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
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15
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Huarachi SF, Petroselli G, Erra-Balsells R, Audisio MC. Antibacterial activity against enterovirulent Escherichia coli strains from Bacillus amyloliquefaciens B31 and Bacillus subtilis subsp. subtilis C4: MALDI-TOF MS profiling and MALDI TOF/TOF MS structural analysis on lipopeptides mixtures. JOURNAL OF MASS SPECTROMETRY : JMS 2022; 57:e4896. [PMID: 36426779 DOI: 10.1002/jms.4896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 11/05/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
In this work, two Bacillus strains isolated from honey (Bacillus subtilis subsp. subtilis C4; access code HQ828992) and from a waste of an artisanal tannery (Bacillus amyloliquefaciens B31; access code KP893752) were evaluated in order to determine their antibacterial activity against five enteropathogenic Escherichia coli strains. The number of viable cultivable cells of the different strains of E. coli analyzed was determined by plate count. The crude cell-free supernatants of both Bacillus strains exerted anti-E. coli activities, whereas only the lipopeptide fraction of B31 had significant E. coli inhibition. The lipopeptides produced by the Bacillus were analyzed using matrix-assisted laser desorption-ionization mass spectrometry (MALDI MS). The analysis was conducted combining the profiles (fingerprints) of the lipopeptides mixture and the individual lipopeptide fragmentation (tandem mass spectrometry [MS/MS] mode), both obtained from the same lipopeptides mixture sample, for higher output. Data obtained from C4 and B31 revealed that surfactin homologues were the most abundant lipopeptides produced by both strains studied. Additionally, kurstakin, iturin, and fengycin homologues were detected. Using the MS/MS mode, it was demonstrated that isobar compounds belonging to different families were produced by each Bacillus strain (e.g., C-16 bacillomycin D was detected in B31 samples, meanwhile C-15 iturin C was detected in C4). MS/MS analysis contributed with relevant information about the type of lipopeptides synthesized by Bacillus strains studied in this work.
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Affiliation(s)
- Sergio Fernando Huarachi
- Facultad de Ciencias Agrarias, Universidad Nacional de Jujuy, Juan Bautista Alberdi 47, San Salvador de Jujuy, 4600, Argentina
| | - Gabriela Petroselli
- Facultad de Ciencias Exactas y Naturales, Centro de Investigación en Hidratos de Carbono (CIHIDECAR), CONICET, Universidad de Buenos Aires, Pabellón II, 3er P., Ciudad Universitaria, Buenos Aires, 1428, Argentina
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 3er P., Ciudad Universitaria, Buenos Aires, 1428, Argentina
| | - Rosa Erra-Balsells
- Facultad de Ciencias Exactas y Naturales, Centro de Investigación en Hidratos de Carbono (CIHIDECAR), CONICET, Universidad de Buenos Aires, Pabellón II, 3er P., Ciudad Universitaria, Buenos Aires, 1428, Argentina
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 3er P., Ciudad Universitaria, Buenos Aires, 1428, Argentina
| | - Marcela Carina Audisio
- Instituto de Investigaciones para la Industria Química (INIQUI), CONICET, Universidad Nacional de Salta, Av. Bolivia 5150, Salta, 4400, Argentina
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16
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Fanaei M, Emtiazi G. Entrapment and Delivery of Doxorubicin: Employing a Permeable Lipopeptide-Based Hydrogel as an Efficient Cationic Binder. Appl Biochem Biotechnol 2022; 195:3733-3746. [PMID: 35895252 DOI: 10.1007/s12010-022-04068-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2022] [Indexed: 11/30/2022]
Abstract
Lipopeptides have been the subject of great interest as vehicles for drug delivery, but the potential usage of their biological composites has not been extensively studied. Here, the extracellular lipopeptide composite (ELC) of a lipopeptide-producing bacterium was extracted and examined to deliver doxorubicin (DOX) as a cationic drug. MALDI-TOF mass spectrometry analysis on the lipopeptide moiety of ELC revealed that this hydrogel consists of 13 lipopeptide isomers. Furthermore, scanning electron microscope (SEM) studies showed that the permeability of ELC in acidic pH was significantly more than basic condition. In this study, 81% of DOX was successfully entrapped in ELC and the release of the drug was measured in acidic, neutral, and basic conditions. The results indicated that the release profile of the drug in acidic pH was about 10 and 16 fold more than neutral and basic conditions, respectively. Besides, the toxicity of DOX-conjugated ELC against PBMC cells was more than free DOX, suggesting the adequate drug release from ELC. Since the surrounding environment of tumor cells is often acidic, this pH-sensitive carrier could be a candidate for cancer therapy to improve the exposure of tumor cells to the drugs.
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Affiliation(s)
- Maryam Fanaei
- Faculty of Biological Science and Technology, Department of Cellular and Molecular Biology and Microbiology, University of Isfahan, Isfahan, Iran
| | - Giti Emtiazi
- Faculty of Biological Science and Technology, Department of Cellular and Molecular Biology and Microbiology, University of Isfahan, Isfahan, Iran. .,Faculty of Biological Science and Technology, Department of Biotechnology, Shahid Ashrafi Esfahani University, Isfahan, Iran.
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17
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Fungal control in foods through biopreservation. Curr Opin Food Sci 2022. [DOI: 10.1016/j.cofs.2022.100904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Banerjee S, Sen S, Bhakat A, Bhowmick A, Sarkar K. The lipopeptides Fengycin and Iturin are involved in the anticandidal activity of endophytic Bacillus sp. as determined by experimental and in-silico analysis. Lett Appl Microbiol 2022; 75:450-459. [PMID: 35620862 DOI: 10.1111/lam.13750] [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: 03/01/2022] [Revised: 04/28/2022] [Accepted: 05/21/2022] [Indexed: 11/28/2022]
Abstract
In this study, an endophytic Bacillus sp. strain (K7) was isolated from the medicinally important ornamental plant, Jasminum officinale. Biochemical analyses were conducted to evaluate the nature of the extracted product, which displayed strong anticandidal activity against Candida albicans SC5314, as evident from the results obtained in agar-cup diffusion tests, phase contrast microscopy, scanning electron microscopy, and minimum inhibitory concentration assays. After confirming the presence of the gene clusters encoding the lipopeptides iturins and fengycin in the genome of K7, their corresponding molecular ions were identified using MALDI-TOF-MS. 3D structures of the lipopeptides were downloaded from specific databases and molecular docking was performed against a vital C. albicans enzyme, Exo 1, 3- beta-glucanase, involved in cell wall remodeling, adhesion to polymer materials, and biofilm formation. The docking score of iturins was found to be -8.6 and -8.2 kcal mol-1 and for fengycin it was -9.4 kcal mol-1 , indicating a strong affinity of these cyclic lipopeptides towards Exo 1, 3- beta-glucanase. The combined in vitro and in-silico anticandidal studies suggested that these secreted lipopeptides from Bacillus sp. may be used as potential therapeutics against opportunistic and complicated infections of Candida albicans.
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Affiliation(s)
- Saikat Banerjee
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India
| | - Samya Sen
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India.,Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, Rajasthan, India
| | - Ankika Bhakat
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India
| | - Arpita Bhowmick
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India
| | - Keka Sarkar
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India
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19
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Lipopeptide Biosurfactants from Bacillus spp.: Types, Production, Biological Activities, and Applications in Food. J FOOD QUALITY 2022. [DOI: 10.1155/2022/3930112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Biosurfactants are a functionally and structurally heterogeneous group of biomolecules produced by multiple filamentous fungi, yeast, and bacteria, and characterized by their distinct surface and emulsifying ability. The genus Bacillus is well studied for biosurfactant production as it produces various types of lipopeptides, for example, lichenysins, bacillomycin, fengycins, and surfactins. Bacillus lipopeptides possess a broad spectrum of biological activities such as antimicrobial, antitumor, immunosuppressant, and antidiabetic, in addition to their use in skincare. Moreover, Bacillus lipopeptides are also involved in various food products to increase the antimicrobial, surfactant, and emulsification impact. From the previously published articles, it can be concluded that biosurfactants have strong potential to be used in food, healthcare, and agriculture. In this review article, we discuss the versatile functions of lipopeptide Bacillus species with particular emphasis on the biological activities and their applications in food.
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Zargar AN, Lymperatou A, Skiadas I, Kumar M, Srivastava P. Structural and functional characterization of a novel biosurfactant from Bacillus sp. IITD106. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127201. [PMID: 34560483 DOI: 10.1016/j.jhazmat.2021.127201] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 08/29/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Plant saponins are attractive biosurfactants and have been used to enhance phytoremediation. There are only limited reports on saponins produced by bacteria. Here, we report structural and functional characterization of a novel saponin produced by Bacillus sp. IITD106. Biosurfactant production was determined by emulsion index, drop collapse, oil displacement and hemolytic assays. The biosurfactant was stable over a range of temperature (30 °C to 70 °C), salinity (0-150 g liter-1) and pH (4-10). The surface tension of the medium reduced from 58.89 mN/m to 27.29 mN/m using the isolated biosurfactant. Chromatographic analysis revealed the biosurfactant to be a glycolipid. LCMS, FT-IR and NMR analysis identified the biosurfactant to be a saponin containing two sugar groups and a 5 ringed triterpene sapogenin unit. Genome sequencing of the strain revealed the presence of genes responsible for biosynthesis of saponin. Statistical optimization of culture medium resulted in 9.3-fold increase in biosurfactant production. Kinetics study of biosurfactant production performed in a stirred tank batch bioreactor resulted in 6.04 g liter-1 and 6.9 g liter-1 biomass and biosurfactant concentration, respectively. The biosurfactant was found to solubilize polycyclic aromatic hydrocarbons. The potential of cell free biosurfactant containing broth to enhance oil recovery was tested in a sand pack column and recovery of 63% of residual oil was observed. To our knowledge this is the first report of saponin production by any of the strains of Bacillus.
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Affiliation(s)
- Arif Nissar Zargar
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India; Indian Oil Corporation, R&D Centre, Sector-13, Faridabad 121007, India; Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby 2800, Denmark
| | - Anna Lymperatou
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby 2800, Denmark
| | - Ioannis Skiadas
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby 2800, Denmark
| | - Manoj Kumar
- Indian Oil Corporation, R&D Centre, Sector-13, Faridabad 121007, India
| | - Preeti Srivastava
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India.
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21
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Kamali M, Guo D, Naeimi S, Ahmadi J. Perception of Biocontrol Potential of Bacillus inaquosorum KR2-7 against Tomato Fusarium Wilt through Merging Genome Mining with Chemical Analysis. BIOLOGY 2022; 11:biology11010137. [PMID: 35053135 PMCID: PMC8773019 DOI: 10.3390/biology11010137] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/10/2022] [Accepted: 01/10/2022] [Indexed: 12/31/2022]
Abstract
Simple Summary Bacillus is a bacterial genus that is widely used as a promising alternative to chemical pesticides due to its protective activity toward economically important plant pathogens. Fusarium wilt of tomato is a serious fungal disease limiting tomato production worldwide. Recently, the newly isolated B. inaquosorum strain KR2-7 considerably suppressed Fusarium wilt of tomato plants. The present study was performed to perceive potential direct and indirect biocontrol mechanisms implemented by KR2-7 against this disease through genome and chemical analysis. The potential direct biocontrol mechanisms of KR2-7 were determined through the identification of genes involved in the synthesis of antibiotically active compounds suppressing tomato Fusarium wilt. Furthermore, the indirect mechanisms of this bacterium were perceived through recognizing genes that contributed to the resource acquisition or modulation of plant hormone levels. This is the first study that aimed at the modes of actions of B. inaquosorum against Fusarium wilt of tomatoes and the results strongly indicate that strain KR2-7 could be a good candidate for microbial biopesticide formulations to be used for biological control of plant diseases and plant growth promotion. Abstract Tomato Fusarium wilt, caused by Fusarium oxysporum f. sp. lycopersici (Fol), is a destructive disease that threatens the agricultural production of tomatoes. In the present study, the biocontrol potential of strain KR2-7 against Fol was investigated through integrated genome mining and chemical analysis. Strain KR2-7 was identified as B. inaquosorum based on phylogenetic analysis. Through the genome mining of strain KR2-7, we identified nine antifungal and antibacterial compound biosynthetic gene clusters (BGCs) including fengycin, surfactin and Bacillomycin F, bacillaene, macrolactin, sporulation killing factor (skf), subtilosin A, bacilysin, and bacillibactin. The corresponding compounds were confirmed through MALDI-TOF-MS chemical analysis. The gene/gene clusters involved in plant colonization, plant growth promotion, and induced systemic resistance were also identified in the KR2-7 genome, and their related secondary metabolites were detected. In light of these results, the biocontrol potential of strain KR2-7 against tomato Fusarium wilt was identified. This study highlights the potential to use strain KR2-7 as a plant-growth promotion agent.
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Affiliation(s)
- Maedeh Kamali
- College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, China;
| | - Dianjing Guo
- State Key Laboratory of Agrobiotechnology and School of Life Sciences, Chinese University of Hong Kong, Hong Kong, China
- Correspondence: ; Tel.: +852-3943-6298
| | - Shahram Naeimi
- Department of Biological Control Research, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran 19858-13111, Iran;
| | - Jafar Ahmadi
- Department of Genetics and Plant Breeding, Imam Khomeini International University, Qazvin 34149-16818, Iran;
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22
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Abstract
The aim of this work was to investigate the most promising natural antimicrobials effective for the growth suppression of Xanthomonas spp. bacteria. The research objects were Xanthomonas spp. strains isolated from tubers and stem of plants growing in Lithuania: Xanthomonas translucens NRCIB X6, X. arboricola NRCIB X7, NRCIB X8, NRCIB X9, and NRCIB X10; the supernatants of lactic acid bacteria Lactococcus lactis strains 140/2, 57, and 768/5, Lactobacillus helveticus strains 14, 148/3, R, and 3, Lb. reuteri 3 and 7, Streptococcus thermophilus 43, Enterococcus faecium 59-30 and 41-2; endophytic bacterial strains Bacillus, Pseudomonas, and Paenibacillus spp.; and essential oils of lavender (Lavandula angustifolia), grapefruit (Citrus paradisi), pine (Pinus sylvestris), thyme (Thymus vulgaris), rosemary (Rosmarinus officinalis), peppermint (Mentha piperita), lemon (Citrus limetta), aqueous extracts of blueberries (Vaccinium myrtillus), and cranberries (Vaccinium vitis-idaea). The antimicrobial activity of tested substances was determined by agar diffusion method. Supernatants of Lb. reuteri strain 7 and Lb. helveticus strains 14, R, 3, and 148/3 were found to have a high antimicrobial activity against Xanthomonas spp. bacteria strains when compared to the positive control—1.0% copper sulfate (diameter of inhibition zones was 28.8 ± 0.7 mm). The diameter of inhibition zones of supernatants ranged from 23.3 ± 0.6 mm to 32.0 ± 0.1 mm. Thyme (2.0%) and lavender (2.0%) essential oils inhibited the growth of Xanthomonas spp. strains. The diameter of the inhibition zones was from 14.7 ± 0.8 mm to 22.8 ± 0.9 mm. The aqueous extracts of blueberries had a weak antimicrobial activity. The diameter of inhibition zones ranged from 11.0 ± 0.2 mm to 13.0 ± 0.2 mm.
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Rungsirivanich P, Parlindungan E, O'Connor PM, Field D, Mahony J, Thongwai N, van Sinderen D. Simultaneous Production of Multiple Antimicrobial Compounds by Bacillus velezensis ML122-2 Isolated From Assam Tea Leaf [ Camellia sinensis var. assamica (J.W.Mast.) Kitam.]. Front Microbiol 2021; 12:789362. [PMID: 34899671 PMCID: PMC8653701 DOI: 10.3389/fmicb.2021.789362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 10/29/2021] [Indexed: 12/25/2022] Open
Abstract
Bacillus velezensis ML122-2 is an antimicrobial-producing strain isolated from the leaf of Assam tea or Miang [Camellia sinensis var. assamica (J.W.Mast.) Kitam.]. The cell-free supernatant (CFS) of strain ML122-2 exhibits a broad-spectrum antimicrobial activity against various Gram-positive and Gram-negative bacteria as well as the mold Penicillium expansum. The genome of B. velezensis ML122-2 was sequenced and in silico analysis identified three potential bacteriocin-associated gene clusters, that is, those involved in the production of mersacidin, amylocyclicin, and LCI. Furthermore, six gene clusters exhibiting homology (75–100% DNA sequence identity) to those associated with the secondary metabolites bacilysin, bacillibactin, surfactin, macrolactin H, bacillaene, and plipastatin were identified. Individual antimicrobial activities produced by B. velezensis ML122-2 were purified and characterized by Matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry analysis, revealing three antimicrobial peptides with molecular masses corresponding to surfactin, plipastatin, and amylocyclicin. Transcriptional analysis of specific genes associated with mersacidin (mrsA), amylocyclicin (acnA), plipastatin (ppsA), and surfactin (srfAA) production by B. velezensis ML122-2 showed that the first was not transcribed under the conditions tested, while the latter three were consistent with the presence of the associated peptides as determined by mass spectrometry analysis. These findings demonstrate that B. velezensis ML122-2 has the genetic capacity to produce a wide range of antimicrobial activities that may support a specific community structure and highlight the biotechnological properties of Assam tea.
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Affiliation(s)
- Patthanasak Rungsirivanich
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.,Graduate School, Chiang Mai University, Chiang Mai, Thailand
| | - Elvina Parlindungan
- School of Microbiology, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Paula M O'Connor
- APC Microbiome Ireland, University College Cork, Cork, Ireland.,Teagasc Food Research Centre, Moorepark, Fermoy, Ireland
| | - Des Field
- School of Microbiology, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Jennifer Mahony
- School of Microbiology, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Narumol Thongwai
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.,Research Center in Bioresources for Agriculture, Industry and Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Douwe van Sinderen
- School of Microbiology, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
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Genomic and Metabolomic Insights into Secondary Metabolites of the Novel Bacillus halotolerans Hil4, an Endophyte with Promising Antagonistic Activity against Gray Mold and Plant Growth Promoting Potential. Microorganisms 2021; 9:microorganisms9122508. [PMID: 34946110 PMCID: PMC8704346 DOI: 10.3390/microorganisms9122508] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 12/28/2022] Open
Abstract
The endophytic bacterial strain Hil4 was isolated from leaves of the medicinal plant Hypericum hircinum. It exhibited antifungal activity against Botrytis cinerea and a plethora of plant growth promoting traits in vitro. Whole genome sequencing revealed that it belongs to Bacillus halotolerans and possesses numerous secondary metabolite biosynthetic gene clusters and genes involved in plant growth promotion, colonization, and plant defense elicitation. The Mojavensin cluster was present in the genome, making this strain novel among plant-associated B. halotolerans strains. Extracts of secreted agar-diffusible compounds from single culture secretome extracts and dual cultures with B. cinerea were bioactive and had the same antifungal pattern on TLC plates after bioautography. UHPLC-HRMS analysis of the single culture secretome extract putatively annotated the consecutively produced antimicrobial substances and ISR elicitors. The isolate also proved efficient in minimizing the severity of gray mold post-harvest disease on table grape berries, as well as cherry tomatoes. Finally, it positively influenced the growth of Arabidopsis thaliana Col-0 and Solanum lycopersicum var. Chondrokatsari Messinias after seed biopriming in vitro. Overall, these results indicate that the B. halotolerans strain Hil4 is a promising novel plant growth promoting and biocontrol agent, and can be used in future research for the development of biostimulants and/or biological control agents.
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Papadopoulou EA, Angelis A, Antoniadi L, Aliferis KA, Skaltsounis AL. Discovering the Next-Generation Plant Protection Products: A Proof-of-Concept via the Isolation and Bioactivity Assessment of the Olive Tree Endophyte Bacillus sp. PTA13 Lipopeptides. Metabolites 2021; 11:metabo11120833. [PMID: 34940591 PMCID: PMC8705366 DOI: 10.3390/metabo11120833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/24/2021] [Accepted: 11/30/2021] [Indexed: 11/16/2022] Open
Abstract
Endophytic microorganisms (EMs) have recently attracted interest for applications in plant protection, mainly due to their bioactive compound-producing capacity. Therefore, we underwent the task of isolating olive tree EMs and investigating their bioactivity against the devastating pathogen Colletotrichum acutatum. Several EMs were isolated; however, the Bacillus sp. PTA13 isolate exhibited the highest toxicity to the phytopathogen. Bacteria of the genus Bacillus exhibit superior bioactive metabolite-producing capacity, with the lipopeptides (LPs) of surfactin, iturin, and fengycin groups being the most studied. A total LP extract and several fractions were obtained, and their bioactivity was assessed against C. acutatum strains. LPs of the major surfactin, iturin, and fengycin groups and the minor gageotetrin and bacilotetrin groups were annotated. The results confirmed the bioactivity of the major LPs, with fengycins being the most fungitoxic. Interestingly, the minor LP fraction exhibited selective toxicity to the fungicide-resistant C. acutatum isolate, an observation that highlights the significance of our approach to comprehensively mine the total LP extract. This work represents a proof of concept of the exploitation of EMs in customized olive tree plant protection and aligns well with strategies that focus on the sustainability and safety of food production via the development of next-generation plant protection products.
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Affiliation(s)
- Evgenia-Anna Papadopoulou
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece;
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece; (A.A.); (L.A.)
| | - Apostolis Angelis
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece; (A.A.); (L.A.)
| | - Lemonia Antoniadi
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece; (A.A.); (L.A.)
| | - Konstantinos A. Aliferis
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece;
- Department of Plant Science, McGill University, Macdonald Campus, Ste-Anne-de-Bellevue, QC H9X 3V9, Canada
- Correspondence: (K.A.A.); (A.-L.S.); Tel.: +30-210-5294541 (K.A.A.); +30-210-7274598 (A.-L.S.)
| | - Alexios-Leandros Skaltsounis
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece; (A.A.); (L.A.)
- Correspondence: (K.A.A.); (A.-L.S.); Tel.: +30-210-5294541 (K.A.A.); +30-210-7274598 (A.-L.S.)
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Soussi S, Essid R, Karkouch I, Saad H, Bachkouel S, Aouani E, Limam F, Tabbene O. Effect of Lipopeptide-Loaded Chitosan Nanoparticles on Candida albicans Adhesion and on the Growth of Leishmania major. Appl Biochem Biotechnol 2021; 193:3732-3752. [PMID: 34398423 DOI: 10.1007/s12010-021-03621-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 07/12/2021] [Indexed: 01/12/2023]
Abstract
Cyclic lipopeptides produced by Bacillus species exhibit interesting therapeutic potential. However, their clinical use remains limited due to their low stability, undesirable interactions with host macromolecules, and their potential toxicity to mammalian cells. The present work aims to develop suitable lipopeptide-loaded chitosan nanoparticles with improved biological properties and reduced toxicity. Surfactin and bacillomycin D lipopeptides produced by Bacillus amyloliquefaciens B84 strain were loaded onto chitosan nanoparticles by ionotropic gelation process. Nanoformulated lipopeptides exhibit an average size of 569 nm, a zeta potential range of 38.8 mV, and encapsulation efficiency (EE) of 85.58%. Treatment of Candida (C.) albicans cells with encapsulated lipopeptides induced anti-adhesive activity of 81.17% and decreased cell surface hydrophobicity (CSH) by 25.53% at 2000 µg/mL. Nanoformulated lipopeptides also induced antileishmanial activity against Leishmania (L.) major promastigote and amastigote forms at respective IC50 values of 14.37 µg/mL and 22.45 µg/mL. Nanoencapsulated lipopeptides exerted low cytotoxicity towards human erythrocytes and Raw 264.7 macrophage cell line with respective HC50 and LC50 values of 770 µg/mL and 234.56 µg/mL. Nanoencapsulated lipopeptides could be used as a potential delivery system of lipopeptides to improve their anti-adhesive effect against C. albicans cells colonizing medical devices and their anti-infectious activity against leishmania.
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Affiliation(s)
- Siwar Soussi
- Laboratoire Des Substances Bioactives, Centre de Biotechnologie de Borj-Cedria (CBBC), BP-901, 2050, Hammam-lif, Tunisia.,Faculté Des Sciences de Bizerte, Université de Carthage, Tunis, Tunisia
| | - Rym Essid
- Laboratoire Des Substances Bioactives, Centre de Biotechnologie de Borj-Cedria (CBBC), BP-901, 2050, Hammam-lif, Tunisia
| | - Ines Karkouch
- Laboratoire Des Substances Bioactives, Centre de Biotechnologie de Borj-Cedria (CBBC), BP-901, 2050, Hammam-lif, Tunisia
| | - Houda Saad
- Laboratoire Des Matériaux Composites Et Minéraux Argileux, Centre National Des Recherches en Sciences Des Matériaux, BP-73, 8027, Soliman, Tunisia
| | - Sarra Bachkouel
- Centre de Biotechnologie de Borj-Cedria (CBBC), Espace D'Appui À La Recherche Et de Transfert Technologique, BP-901, 2050, Hammam-lif, Tunisia
| | - Ezzedine Aouani
- Laboratoire Des Substances Bioactives, Centre de Biotechnologie de Borj-Cedria (CBBC), BP-901, 2050, Hammam-lif, Tunisia
| | - Ferid Limam
- Laboratoire Des Substances Bioactives, Centre de Biotechnologie de Borj-Cedria (CBBC), BP-901, 2050, Hammam-lif, Tunisia
| | - Olfa Tabbene
- Laboratoire Des Substances Bioactives, Centre de Biotechnologie de Borj-Cedria (CBBC), BP-901, 2050, Hammam-lif, Tunisia.
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A low-cost brewery waste as a carbon source in bio-surfactant production. Bioprocess Biosyst Eng 2021; 44:2269-2276. [PMID: 34155546 DOI: 10.1007/s00449-021-02602-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/11/2021] [Indexed: 10/21/2022]
Abstract
This work aims to produce bio-surfactant using a brewery waste (trub) as a strategy to reduce production costs related to the substrate, as well as to provide an eco-friendly destination for this residue. Trub is obtained during the boiling of the wort, being mainly composed of proteins and reducing sugars. To evaluate important process parameters on bio-surfactant production, a full factorial design (24) was elaborated, having agitation rate and concentrations of trub, yeast extract, and peptone as independent variables. The highest bio-surfactant concentration achieved was 100.76 mg L-1, where FTIR and Maldi-ToF-MS confirmed functional groups characteristic of peptides and isomers of surfactin in the bio-surfactant extract. Trub, agitation and yeast extract showed statistically significant effects on the response variable (surface tension), where an increase in the agitation rate and in the concentration of yeast extract demonstrated a positive impact on the production of bio-surfactant.
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Detection of simultaneous production of kurstakin, fengycin and surfactin lipopeptides in Bacillus mojavensis using a novel gel-based method and MALDI-TOF spectrometry. World J Microbiol Biotechnol 2021; 37:97. [PMID: 33969441 DOI: 10.1007/s11274-021-03064-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 04/23/2021] [Indexed: 10/21/2022]
Abstract
Bacterial lipopeptides have become a research focus of many studies owing to their industrial and pharmaceutical importance. Although such studies focused on researching purification procedures and qualitative analysis, much remains to be explored and developed to improve the current methods. To enable thorough studies of lipopeptides, this paper describes a new method for purification and characterization of in-gel anionic lipopeptides. Specifically, lipopeptides attributed to the anti-staphylococcal activity of Bacillus mojavensis HF were separated using SDS-PAGE (sodium dodecyl sulphate-polyacrylamide gel electrophoresis) and subsequently characterized using mass spectrometry. Lipopeptide band obtained by gel electrophoresis was first visualized using three different staining methods. Next, the lipopeptide isomers were efficiently recovered from the gel band and structural characterization of the extracted lipopeptides was carried out by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). MS analysis revealed that Bacillus mojavensis HF produced three types of lipopeptides including surfactin, fengycin, and kurstakin. 14 clusters of ion peaks were identified as fengycin A with fatty acid of C15-C17, fengycin B (C16, C17), surfactin (C13-C16), and kurstakin (C9-C12). Moreover, tandem mass spectrometric analysis (MS/MS) revealed the sequences of fengycin A and surfactin. In this study, we identified a high variety and number of surfactin and fengycin isomers, which previous reports lacked. To the best of our knowledge, we are the first to report the presence of kurstakin in Bacillus mojavensis species. Finally, we demonstrated that our gel-based study of lipopeptides allowed for a precise and reproducible investigation of these molecules.
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Etemadzadeh SS, Emtiazi G. In vitro identification of antimicrobial hemolytic lipopeptide from halotolerant Bacillus by Zymogram, FTIR, and GC mass analysis. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2021; 24:666-674. [PMID: 34249269 PMCID: PMC8244604 DOI: 10.22038/ijbms.2021.53419.12022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 04/13/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVES The multi-drug resistant bacteria and clinical infections are some of the biggest global concerns, so new drugs are needed. Antimicrobial peptides and lipopeptides are new bioactive agents with great potential that can become a new strategy for clinical applications. MATERIALS AND METHODS Some Bacillus strains were isolated based on hemolytic antimicrobial production from the soil. The extracellular proteins were extracted by acidic precipitation and chloroform/methanol method and analyzed by SDS-PAGE electrophoresis and stained with Sudan black. The black fragment was purified and characterized by FTIR, GC/MS, and HPLC analysis to demonstrate the presence of lipids and proteins. The anti-microbial ability and stability of the purified lipopeptide were assayed by the Kirby-Bauer method. Also, it was examined for metal removal. RESULTS A new Bacillus halotolerans strain SCM 034 with hemolytic antimicrobial production was isolated. According to GC/MS (detecting C16, C17) and HPLC (detecting leucine, glutamic acid, valine, arginine, glycine, and aspartic acid) data, the black fragment was lipopeptide. Polyacrylamide hydrogel containing lipopeptide and gel purified lipopeptide showed anti-microbial activities against S. aureus and S. cerevisiae that were stable for a few months. Also, the lipopeptide was useful for cation removal and decreased cobalt, nickel, and calcium by 10.81 %, 24.39 %, and 34 %, respectively. CONCLUSION Production of antibacterial lipopeptide hemolysin from this strain is reported for the first time and according to the results, lipopeptides have unique properties with biomedical and pharmaceutical applications. Also, polyacrylamide hydrogel lipopeptide is a promising candidate for wound healing.
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Affiliation(s)
- Shekoofeh Sadat Etemadzadeh
- Department of Cellular and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Giti Emtiazi
- Department of Cellular and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
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30
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Diallo MM, Vural C, Şahar U, Ozdemir G. Kurstakin molecules facilitate diesel oil assimilation by Acinetobacter haemolyticus strain 2SA through overexpression of alkane hydroxylase genes. ENVIRONMENTAL TECHNOLOGY 2021; 42:2031-2045. [PMID: 31752596 DOI: 10.1080/09593330.2019.1689301] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 10/30/2019] [Indexed: 06/10/2023]
Abstract
Biodegradation is a cost-effective process commonly used to eliminate many xenobiotic hydrocarbons such as diesel oils. However, their hydrophobic character reduces the biodegradation efficiency. In order to overcome this hurdle, kurstakins isolated from Bacillus thuringiensis strain 7SA were used as emulsifying agents. The influence of kurstakin molecules on diesel oil degradation by Acinetobacter haemolyticus strain 2SA was evaluated in the presence and absence of the aforementioned lipopeptide. The degradation rates and gene expressions of alkane hydroxylases were evaluated at days 4, 10, 14 and 21. Results showed that kurstakin molecules increased the hydrophobicity of 2SA. Moreover, diesel oil degradation activities were higher in the presence of kurstakin with 29%, 35%, 29% and 23% improvement at 4th, 10th, 14th and 21st day respectively. Statistical analysis indicated that the difference between the degradation rates in the presence and absence of kurstakin was significant with p = 0.03. The detection of three different hydroxylase genes namely alkB, almA and cyp153 in 2SA genome, might have allowed more efficient degradability of alkanes. According to the real-time PCR results, cyp153 was the most induced gene during diesel oil degradation in the presence and absence of kurstakin. Yet, the three genes demonstrated higher levels of expression in the presence of kurstakin when compared to its absence. This study showed that kurstakins enhance the diesel oil biodegradation rate by increasing the hydrophobicity of 2SA. In addition to their anti-fungal activities, kurstakins can be used as biosurfactant to increase biodegradation of diesel oil.
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Affiliation(s)
- Mamadou Malick Diallo
- Department of Biology, Basic and Industrial Microbiology Section, Ege University, Izmir, Turkey
| | - Caner Vural
- Department of Biology, Basic and Industrial Microbiology Section, Ege University, Izmir, Turkey
| | - Umut Şahar
- Department of Biology, Molecular Biology Section, Ege University, Izmir, Turkey
| | - Guven Ozdemir
- Department of Biology, Basic and Industrial Microbiology Section, Ege University, Izmir, Turkey
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Prathiviraj R, Rajeev R, Fernandes H, Rathna K, Lipton AN, Selvin J, Kiran GS. A gelatinized lipopeptide diet effectively modulates immune response, disease resistance and gut microbiome in Penaeus vannamei challenged with Vibrio parahaemolyticus. FISH & SHELLFISH IMMUNOLOGY 2021; 112:92-107. [PMID: 33675990 DOI: 10.1016/j.fsi.2021.02.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 02/28/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Penaeus vannamei is one of the most economically vital shrimp globally, but infectious diseases have hampered its proper production and supply. As antibiotics pose a huge threat to the environment and humankind, it is essential to seek an alternative strategy to overcome infection and ensure proper culture and production. The present study investigates the effect of an anti-infective biosurfactant derivative lipopeptide MSA31 produced by a marine bacterium on the growth performance, disease resistance, and the gut microbiome of P. vannamei when challenged with pathogenic Vibrio parahaemolyticus SF14. The shrimp were fed with a commercial and lipopeptide formulated diet for 60 days and the growth performance was analyzed. The lipopeptide fed shrimp group showed enhanced growth performance and specific growth rate with improved weight gain than the control group. The challenge experiment showed that the survival rate was significant in the lipopeptide fed group compared to the control group. The results revealed 100% mortality in the control group at the end of 12 h of challenge, while 50% of the lipopeptide diet-fed group survived 24 h, which indicates the enhanced disease resistance in shrimp fed with a lipopeptide diet. The test group also showed higher levels of digestive and immune enzymes, which suggests that the lipopeptide diet could positively modulate the digestive and immune activity of the shrimp. The gut microbiome profiling by Illumina high-throughput sequencing revealed that the most abundant genera in the lipopeptide diet-fed group were Adhaeribacter, Acidothermus, Brevibacillus, Candidatus, Mycobacterium, Rodopila, and Streptomyces, while opportunistic pathogens such as Streptococcus, Escherichia, Klebsiella, Neisseria, Rhizobium, and Salmonella were abundant in the control diet-fed shrimp. Also, lipopeptide diet-fed shrimp were found to have a high abundance of ammonia and nitrogen oxidizing bacteria, which are essential pollutant degraders. Therefore, the study reveals that the dietary supplementation of lipopeptide in shrimp aquaculture could positively modulate the gut microbiome and enhance the shrimp's overall health and immunity in an eco-friendly manner.
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Affiliation(s)
- R Prathiviraj
- Department of Microbiology, Pondicherry University, Puducherry, 605014, India
| | - Riya Rajeev
- Department of Microbiology, Pondicherry University, Puducherry, 605014, India
| | - Henrietta Fernandes
- Department of Microbiology, Pondicherry University, Puducherry, 605014, India
| | - K Rathna
- Department of Microbiology, Pondicherry University, Puducherry, 605014, India
| | - Anuj Nishanth Lipton
- Curtin Malaysia Research Institute, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Joseph Selvin
- Department of Microbiology, Pondicherry University, Puducherry, 605014, India
| | - George Seghal Kiran
- Department of Food Science and Technology, Pondicherry University, Puducherry, 605014, India.
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Ezrari S, Mhidra O, Radouane N, Tahiri A, Polizzi G, Lazraq A, Lahlali R. Potential Role of Rhizobacteria Isolated from Citrus Rhizosphere for Biological Control of Citrus Dry Root Rot. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10050872. [PMID: 33926049 PMCID: PMC8145030 DOI: 10.3390/plants10050872] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 04/21/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
Citrus trees face threats from several diseases that affect its production, in particular dry root rot (DRR). DRR is a multifactorial disease mainly attributed to Neocosmospora (Fusarium) solani and other several species of Neocosmospora and Fusarium spp. Nowadays, biological control holds a promising control strategy that showed its great potential as a reliable eco-friendly method for managing DRR disease. In the present study, antagonist rhizobacteria isolates were screened based on in vitro dual culture bioassay with N. solani. Out of 210 bacterial isolates collected from citrus rhizosphere, twenty isolates were selected and identified to the species level based on the 16S rRNA gene. Molecular identification based on 16S rRNA gene revealed nine species belonging to Bacillus, Stenotrophomonas, and Sphingobacterium genus. In addition, their possible mechanisms involved in biocontrol and plant growth promoting traits were also investigated. Results showed that pectinase, cellulose, and chitinase were produced by eighteen, sixteen, and eight bacterial isolates, respectively. All twenty isolates were able to produce amylase and protease, only four isolates produced hydrogen cyanide, fourteen isolates have solubilized tricalcium phosphate, and ten had the ability to produce indole-3-acetic acid (IAA). Surprisingly, antagonist bacteria differed substantially in their ability to produce antimicrobial substances such as bacillomycin (five isolates), iturin (ten isolates), fengycin (six isolates), surfactin (fourteen isolates), and bacteriocin (subtilosin A (six isolates)). Regarding the PGPR capabilities, an increase in the growth of the bacterial treated canola plants, used as a model plant, was observed. Interestingly, both bacterial isolates Bacillus subtilis K4-4 and GH3-8 appear to be more promising as biocontrol agents, since they completely suppressed the disease in greenhouse trials. Moreover, these antagonist bacteria could be used as bio-fertilizer for sustainable agriculture.
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Affiliation(s)
- Said Ezrari
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (S.E.); (O.M.); (N.R.); (A.T.)
- Laboratory of Functional Ecology and Engineering Environment, Department of Biology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d’Imouzzer, Fez 30000, Morocco;
| | - Oumayma Mhidra
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (S.E.); (O.M.); (N.R.); (A.T.)
| | - Nabil Radouane
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (S.E.); (O.M.); (N.R.); (A.T.)
- Laboratory of Functional Ecology and Engineering Environment, Department of Biology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d’Imouzzer, Fez 30000, Morocco;
| | - Abdessalem Tahiri
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (S.E.); (O.M.); (N.R.); (A.T.)
| | - Giancarlo Polizzi
- Dipartimento di Agricoltura, Alimentazione e Ambiente, sez. Patologia Vegetale, University of Catania, Via S. Sofia 100, 95123 Catania, Italy
| | - Abderrahim Lazraq
- Laboratory of Functional Ecology and Engineering Environment, Department of Biology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d’Imouzzer, Fez 30000, Morocco;
| | - Rachid Lahlali
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (S.E.); (O.M.); (N.R.); (A.T.)
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Nan J, Zhang S, Jiang L. Antibacterial Potential of Bacillus amyloliquefaciens GJ1 against Citrus Huanglongbing. PLANTS 2021; 10:plants10020261. [PMID: 33572917 PMCID: PMC7910844 DOI: 10.3390/plants10020261] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 01/13/2023]
Abstract
Citrus huanglongbing (HLB) is a destructive disease caused by Candidatus Liberibacter species and is a serious global concern for the citrus industry. To date, there is no established strategy for control of this disease. Previously, Bacillus amyloliquefaciens GJ1 was screened as the biocontrol agent against HLB. In this study, two-year-old citrus infected by Ca. L. asiaticus were treated with B. amyloliquefaciens GJ1 solution via root irrigation. In these plants, after seven irrigation treatments, the results indicated that the photosynthetic parameters, chlorophyll content, resistance-associated enzyme content and the expression of defense-related genes were significantly higher than for the plants treated with the same volume water. The content of starch and soluble sugar were significantly lower, compared to the control treatment. The parallel reaction monitoring (PRM) results revealed that treatment with B. amyloliquefaciens GJ1 solution, the expression levels of 3 proteins with photosynthetic function were upregulated in citrus leaves. The accumulation of reactive oxygen species (ROS) in citrus leaves treated with B. amyloliquefaciens GJ1 flag22 was significantly higher than untreated plants and induced the defense-related gene expression in citrus. Finally, surfactin was identified from the fermentation broth of B. amyloliquefaciens GJ1 by high-performance liquid chromatography. These results indicate that B. amyloliquefaciens GJ1 may improve the immunity of citrus by increasing the photosynthesis and enhancing the expression of the resistance-related genes.
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Affiliation(s)
- Jing Nan
- College of Horticulture and Forestry, Ministry of Education Key Laboratory of Plant Biology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Shaoran Zhang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Ling Jiang
- College of Horticulture and Forestry, Ministry of Education Key Laboratory of Plant Biology, Huazhong Agricultural University, Wuhan 430070, China;
- Correspondence:
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Lin LZ, Zheng QW, Wei T, Zhang ZQ, Zhao CF, Zhong H, Xu QY, Lin JF, Guo LQ. Isolation and Characterization of Fengycins Produced by Bacillus amyloliquefaciens JFL21 and Its Broad-Spectrum Antimicrobial Potential Against Multidrug-Resistant Foodborne Pathogens. Front Microbiol 2021; 11:579621. [PMID: 33391199 PMCID: PMC7775374 DOI: 10.3389/fmicb.2020.579621] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 12/02/2020] [Indexed: 11/24/2022] Open
Abstract
The continuing emergence and development of pathogenic microorganisms that are resistant to antibiotics constitute an increasing global concern, and the effort in new antimicrobials discovery will remain relevant until a lasting solution is found. A new bacterial strain, designated JFL21, was isolated from seafood and identified as B. amyloliquefaciens. The antimicrobial substance produced by B. amyloliquefaciens JFL21 showed low toxicity to most probiotics but exhibited strong antimicrobial activities against multidrug-resistant foodborne pathogens. The partially purified antimicrobial substance, Anti-JFL21, was characterized to be a multiple lipopeptides mixture comprising the families of surfactin, fengycin, and iturin. Compared with commercially available polymyxin B and Nisin, Anti-JFL21 not only could exhibit a wider and stronger antibacterial activity toward Gram-positive pathogens but also inhibit the growth of a majority of fungal pathogens. After further separation through gel filtration chromatography (GFC), the family of surfactin, fengycin, and iturin were obtained, respectively. The results of the antimicrobial test pointed out that only fengycin family presented marked antimicrobial properties against the indicators of L. monocytogenes, A. hydrophila, and C. gloeosporioides, which demonstrated that fengycins might play a major role in the antibacterial and antifungal activity of Anti-JFL21. Additionally, the current study also showed that the fengycins produced by B. amyloliquefaciens JFL21 not only maintained stable anti-Listeria activity over a broad pH and temperature range, but also remained active after treatment with ultraviolet sterilization, chemical reagents, and proteolytic enzymes. Therefore, the results of this study suggest the new strain and its antimicrobials are potentially useful in food preservation for the biological control of the multidrug-resistant foodborne pathogens.
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Affiliation(s)
- Long-Zhen Lin
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Qian-Wang Zheng
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Tao Wei
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Zi-Qian Zhang
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Chao-Fan Zhao
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Han Zhong
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Qing-Yuan Xu
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Jun-Fang Lin
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Li-Qiong Guo
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
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35
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Natural bacterial isolates as an inexhaustible source of new bacteriocins. Appl Microbiol Biotechnol 2021; 105:477-492. [PMID: 33394148 DOI: 10.1007/s00253-020-11063-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/10/2020] [Accepted: 12/15/2020] [Indexed: 12/12/2022]
Abstract
Microorganisms isolated from various traditionally fermented food products prepared in households without commercial starter cultures are designated as natural isolates. In addition, this term is also used for microorganisms collected from various natural habitats or products (silage, soil, manure, plant and animal material, etc.) that do not contain any commercial starters or bacterial formulations. They are characterized by unique traits that are the result of the selective pressure of environmental conditions, as well as interactions with other organisms. The synthesis of antimicrobial molecules, including bacteriocins, is an evolutionary advantage and an adaptive feature that sets them apart from other microorganisms from a common environment. This review aims to underline the knowledge of bacteriocins produced by natural isolates, with a particular emphasis on the most common location of their genes and operons, plasmids, and the importance of the relationship between the plasmidome and the adaptive potential of the isolate. Applications of bacteriocins, ranging from natural food preservatives to supplements and drugs in pharmacology and medicine, will also be addressed. The latest challenges faced by researchers in isolating new natural isolates with desired characteristics will be discussed, as well as the production of new antimicrobials, nearly one century since the first discovery of colicins in 1925. KEY POINTS: • Natural bacterial isolates harbor unique properties shaped by diverse interactions. • Horizontal gene transfer enables constant engineering of new antimicrobials. • Fermented food products are important source of bacteriocin-producing natural isolates.
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Rodríguez-López L, López-Prieto A, Lopez-Álvarez M, Pérez-Davila S, Serra J, González P, Cruz JM, Moldes AB. Characterization and Cytotoxic Effect of Biosurfactants Obtained from Different Sources. ACS OMEGA 2020; 5:31381-31390. [PMID: 33324849 PMCID: PMC7726928 DOI: 10.1021/acsomega.0c04933] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/12/2020] [Indexed: 05/04/2023]
Abstract
In this work, five biosurfactant extracts, obtained from different sources, all of them with demonstrated antimicrobial properties, were characterized and subjected to a cytotoxic study using mouse fibroblast cells (NCTC clone 929). Biosurfactant extracts obtained directly from corn steep water (CSW) showed similar surfactant characteristics to those of the extracellular biosurfactant extract produced by Bacillus isolated from CSW and grown in tryptic soy broth, observing that they are amphoteric, consisting of viscous and yellowish liquid with no foaming capacity. Contrarily, cell-bound biosurfactant extracts produced from Lactobacillus pentosus or produced by Bacillus sp isolated from CSW are nonionic, consisting of a white powder with foaming capacity. All the biosurfactants possess a similar fatty acid composition. The cytotoxic test revealed that the extracts under evaluation, at a concentration of 1 g/L, were not cytotoxic for fibroblasts (fibroblast growth > 90%). The biosurfactant extract obtained from CSW with ethyl acetate, at 1 g/L, showed the highest cytotoxic effect but above the cytotoxicity limit established by the UNE-EN-ISO10993-5. It is remarkable that the cell-bound biosurfactant produced by L. pentosus, at a concentration of 1 g/L, promoted the growth of the fibroblast up to 113%.
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Affiliation(s)
- Lorena Rodríguez-López
- EQ10 Group, CINTECX,
Department Chemical Engineering, Universidade
de Vigo-University of Vigo, Campus As Lagoas-Marcosende, 36310 Vigo, Spain
| | - Alejandro López-Prieto
- EQ10 Group, CINTECX,
Department Chemical Engineering, Universidade
de Vigo-University of Vigo, Campus As Lagoas-Marcosende, 36310 Vigo, Spain
| | - Miriam Lopez-Álvarez
- New Materials Group,
CINTECX, IISGS, Department Applied Physics, University of Vigo, Campus Lagoas-Marcosende, Vigo 36310, Spain
| | - Sara Pérez-Davila
- New Materials Group,
CINTECX, IISGS, Department Applied Physics, University of Vigo, Campus Lagoas-Marcosende, Vigo 36310, Spain
| | - Julia Serra
- New Materials Group,
CINTECX, IISGS, Department Applied Physics, University of Vigo, Campus Lagoas-Marcosende, Vigo 36310, Spain
| | - Pío González
- New Materials Group,
CINTECX, IISGS, Department Applied Physics, University of Vigo, Campus Lagoas-Marcosende, Vigo 36310, Spain
| | - José Manuel Cruz
- EQ10 Group, CINTECX,
Department Chemical Engineering, Universidade
de Vigo-University of Vigo, Campus As Lagoas-Marcosende, 36310 Vigo, Spain
| | - Ana B. Moldes
- EQ10 Group, CINTECX,
Department Chemical Engineering, Universidade
de Vigo-University of Vigo, Campus As Lagoas-Marcosende, 36310 Vigo, Spain
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Selection of sponge-associated bacteria with high potential for the production of antibacterial compounds. Sci Rep 2020; 10:19614. [PMID: 33184304 PMCID: PMC7665026 DOI: 10.1038/s41598-020-76256-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 10/18/2020] [Indexed: 01/18/2023] Open
Abstract
The potential of sponge-associated bacteria for the biosynthesis of natural products with antibacterial activity was evaluated. In a preliminary screening 108 of 835 axenic isolates showed antibacterial activity. Active isolates were identified by 16S rRNA gene sequencing and selection of the most promising strains was done in a championship like approach, which can be done in every lab and field station without expensive equipment. In a competition assay, strains that inhibited most of the other strains were selected. In a second round, the strongest competitors from each host sponge competed against each other. To rule out that the best competitors selected in that way represent similar strains with the same metabolic profile, BOX PCR experiments were performed, and extracts of these strains were analysed using metabolic fingerprinting. This proved that the strains are different and have various metabolic profiles, even though belonging to the same genus, i.e. Bacillus. Furthermore, it was shown that co-culture experiments triggered the production of compounds with antibiotic activity, i.e. surfactins and macrolactin A. Since many members of the genus Bacillus possess the genetic equipment for the biosynthesis of these compounds, a potential synergism was analysed, showing synergistic effects between C14-surfactin and macrolactin A against methicillin-resistant Staphylococcus aureus (MRSA).
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Chaurasia LK, Tamang B, Tirwa RK, Lepcha PL. Influence of biosurfactant producing Bacillus tequilensis LK5.4 isolate of kinema, a fermented soybean, on seed germination and growth of maize ( Zea mays L.). 3 Biotech 2020; 10:297. [PMID: 32550114 DOI: 10.1007/s13205-020-02281-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 05/29/2020] [Indexed: 11/28/2022] Open
Abstract
In this study, the lipopeptide biosurfactant was extracted, purified and characterized from the Bacillus isolate LK5.4 obtained from kinema samples of Sikkim. Plant growth-promoting property of the biosurfactant producing bacterium was also evaluated. Out of fifty-seven isolates, only ten were biosurfactant producer as determined by the oil displacement test. Bacillus isolate LK5.4 showed the maximum emulsification index (52.3 ± 0.02), reduced surface tension up to 40% and produced 754 mgL-1 biosurfactant in the nutrient broth. Based on 16S rRNA gene sequencing, the isolate LK5.4 was identified as B. tequilensis. Biosurfactant was purified by Thin Layer Chromatography (TLC). Evaluation of the chemical characteristics by TLC, Liquid Chromatography-Mass Spectrometry, Fourier Transform Infrared Spectroscopy and Nuclear Magnetic Resonance Spectroscopy identified the biosurfactant as surfactin. The effect of different concentration of biosurfactant in maize seed germination was evaluated under in vitro condition. It showed the fastest growth of seedlings at 300 µg/ml biosurfactant solution. Similar results were shown by the potted plant experiment, where the soil was directly treated with biosurfactant producing bacterium LK5.4. The LK5.4 treated plants showed a mean height of 29.17 ± 0.47 cm and mean leaf length of 18.42 ± 0.17 cm while the mean height and mean length of the leaf were 15.48 ± 0.98 cm and 11.12 ± 0.40 cm respectively in the control plants. The treated plants had higher moisture content (68.48 ± 2.79%) than the control plants (50.53 ± 1.63%), which is because of higher bioadsorption in the treated plants. These results provided indirect evidence of plant growth-promoting property of the biosurfactant.
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Affiliation(s)
- Lalit K Chaurasia
- Department of Microbiology, Sikkim University, 6th Mile, Samdur, Tadong, Sikkim India
| | - Buddhiman Tamang
- Department of Microbiology, Sikkim University, 6th Mile, Samdur, Tadong, Sikkim India
| | - Ranjan K Tirwa
- Department of Microbiology, Sikkim University, 6th Mile, Samdur, Tadong, Sikkim India
| | - Pinkey L Lepcha
- Department of Microbiology, Sikkim University, 6th Mile, Samdur, Tadong, Sikkim India
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Maksimov IV, Singh BP, Cherepanova EA, Burkhanova GF, Khairullin RM. Prospects and Applications of Lipopeptide-Producing Bacteria for Plant Protection (Review). APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820010135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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40
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Mechanism of Antibacterial Activity of Bacillus amyloliquefaciens C-1 Lipopeptide toward Anaerobic Clostridium difficile. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3104613. [PMID: 32190658 PMCID: PMC7073505 DOI: 10.1155/2020/3104613] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 01/13/2020] [Accepted: 02/04/2020] [Indexed: 02/06/2023]
Abstract
Probiotics may offer an attractive alternative for standard antibiotic therapy to treat Clostridium difficile infections (CDI). In this study, the antibacterial mechanism in vitro of newly isolated B. amyloliquefaciens C-1 against C. difficile was investigated. The lipopeptides surfactin, iturin, and fengycin produced by C-1 strongly inhibited C. difficile growth and viability. Systematic research of the bacteriostatic mechanism showed that the C-1 lipopeptides damage the integrity of the C. difficile cell wall and cell membrane. In addition, the lipopeptide binds to C. difficile genomic DNA, leading to cell death. Genome resequencing revealed many important antimicrobial compound-encoding clusters, including six nonribosomal peptides (surfactins (srfABCD), iturins (ituABCD), fengycins (fenABCDE), bacillibactin (bmyABC), teichuronic, and bacilysin) and three polyketides (bacillaene (baeEDLMNJRS), difficidin (difABCDEFGHIJ), and macrolactin (mlnABCDEFGHI)). In addition, there were other beneficial genes, such as phospholipase and seven siderophore biosynthesis gene clusters, which may contribute synergistically to the antibacterial activity of B. amyloliquefaciens C-1. We suggest that proper application of antimicrobial peptides may be effective in C. difficile control.
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Penha RO, Vandenberghe LPS, Faulds C, Soccol VT, Soccol CR. Bacillus lipopeptides as powerful pest control agents for a more sustainable and healthy agriculture: recent studies and innovations. PLANTA 2020; 251:70. [PMID: 32086615 DOI: 10.1007/s00425-020-03357-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 02/05/2020] [Indexed: 05/27/2023]
Abstract
Lipopeptides could help to overcome a large concern in agriculture: resistance against chemical pesticides. These molecules have activity against various phytopathogens and a potential to be transformed by genetic engineering. The exponential rise of pest resistances to different chemical pesticides and the global appeal of consumers for a sustainable agriculture and healthy nutrition have led to the search of new solutions for pest control. Furthermore, new laws require a different stance of producers. Based on that, bacteria of the genus Bacillus present a great agricultural potential, producing lipopeptides (LPs) that have high activity against insects, mites, nematodes, and/or phytopathogens that are harmful to plant cultures. Biopesticide activity can be found mainly in three families of Bacillus lipopeptides: surfactin, iturin, and fengycin. These molecules have an amphiphilic nature, interfering with biological membrane structures. Their antimicrobial properties include activity against bacteria, fungi, oomycetes, and viruses. Recent studies also highlight the ability of these compounds to stimulate defense mechanisms of plants and biofilm formation, which is a key factor for the successful colonization of biocontrol organisms. The use of molecular biology has also recently been researched for continuous advances and discoveries of new LPs, avoiding possible future problems of resistance against these molecules. As a consequence of the properties and possibilities of LPs, numerous studies and developments as well as the attention of large companies in the field is expected in the near future.
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Affiliation(s)
- Rafaela O Penha
- Bioprocess Engineering and Biotechnology Department, Federal University of Paraná, Centro Politécnico, CP 19011, Curitiba, PR, 81531-908, Brazil
| | - Luciana P S Vandenberghe
- Bioprocess Engineering and Biotechnology Department, Federal University of Paraná, Centro Politécnico, CP 19011, Curitiba, PR, 81531-908, Brazil
| | - Craig Faulds
- Aix-Marseille Université, POLYTECH Marseille, UMR 1163 Biotechnologie Des Champignons Filamenteux, 163 Avenue de Luminy, 13288, Marseille Cedex 09, France
| | - Vanete T Soccol
- Bioprocess Engineering and Biotechnology Department, Federal University of Paraná, Centro Politécnico, CP 19011, Curitiba, PR, 81531-908, Brazil
| | - Carlos R Soccol
- Bioprocess Engineering and Biotechnology Department, Federal University of Paraná, Centro Politécnico, CP 19011, Curitiba, PR, 81531-908, Brazil.
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Farzand A, Moosa A, Zubair M, Khan AR, Ayaz M, Massawe VC, Gao X. Transcriptional Profiling of Diffusible Lipopeptides and Fungal Virulence Genes During Bacillus amyloliquefaciens EZ1509-Mediated Suppression of Sclerotinia sclerotiorum. PHYTOPATHOLOGY 2020; 110:317-326. [PMID: 31322486 DOI: 10.1094/phyto-05-19-0156-r] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sclerotinia sclerotiorum is a devastating necrotrophic pathogen that infects multiple crops, and its control is an unremitting challenge. In this work, we attempted to gain insights into the pivotal role of lipopeptides (LPs) in the antifungal activity of Bacillus amyloliquefaciens EZ1509. In a comparative study involving five Bacillus strains, B. amyloliquefaciens EZ1509 harboring four LPs biosynthetic genes (viz. surfactin, iturin, fengycin, and bacilysin) exhibited promising antifungal activity against S. sclerotiorum in a dual-culture assay. Our data demonstrated a remarkable upsurge in LPs biosynthetic gene expression through quantitative reverse transcription PCR during in vitro interaction assay with S. sclerotiorum. Maximum upregulation in LPs biosynthetic genes was observed on the second and third days of in vitro interaction, with iturin and fengycin being the highly expressed genes. Subsequently, Matrix-assisted laser desorption/ionization-time of flight-mass spectrometry analysis confirmed the presence of LPs in the inhibition zone. Scanning electron microscope analysis showed disintegration, shrinkage, plasmolysis, and breakdown of fungal hyphae. During in planta evaluation, S. sclerotiorum previously challenged with EZ1509 showed significant suppression in pathogenicity on detached leaves of tobacco and rapeseed. The oxalic acid synthesis was also significantly reduced in S. sclerotiorum previously confronted with antagonistic bacterium. The expression of major virulence genes of S. sclerotiorum, including endopolygalacturonase-3, oxalic acid hydrolase, and endopolygalacturonase-6, was significantly downregulated during in vitro confrontation with EZ1509.
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Affiliation(s)
- Ayaz Farzand
- College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Disease and Pest Insects, Ministry of Agriculture, Nanjing 210095, China
- Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan
| | - Anam Moosa
- Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Zubair
- College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Disease and Pest Insects, Ministry of Agriculture, Nanjing 210095, China
| | - Abdur Rashid Khan
- College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Disease and Pest Insects, Ministry of Agriculture, Nanjing 210095, China
| | - Muhammad Ayaz
- College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Disease and Pest Insects, Ministry of Agriculture, Nanjing 210095, China
| | - Venance Colman Massawe
- College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Disease and Pest Insects, Ministry of Agriculture, Nanjing 210095, China
| | - Xuewen Gao
- College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Disease and Pest Insects, Ministry of Agriculture, Nanjing 210095, China
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Effect-directed screening of Bacillus lipopeptide extracts via hyphenated high-performance thin-layer chromatography. J Chromatogr A 2019; 1605:460366. [DOI: 10.1016/j.chroma.2019.460366] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/10/2019] [Accepted: 07/12/2019] [Indexed: 12/25/2022]
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Pires MEE, Parreira AG, Silva TNL, Colares HC, da Silva JA, de Magalhães JT, Galdino AS, Gonçalves DB, Granjeiro JM, Granjeiro PA. Recent Patents on Impact of Lipopeptide on the Biofilm Formation onto Titanium and Stainless Steel Surfaces. Recent Pat Biotechnol 2019; 14:49-62. [PMID: 31438836 DOI: 10.2174/1872208313666190822150323] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 07/12/2019] [Accepted: 07/23/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Numerous causes of infection in arthroplasties are related to biofilm formation on implant surfaces. In order to circumvent this problem, new alternatives to prevent bacterial adhesion biosurfactants-based are emerging due to low toxicity, biodegradability and antimicrobial activity of several biosurfactants. We revised all patents relating to biosurfactants of applicability in orthopedic implants. METHODS This work aims to evaluate the capability of a lipopeptide produced by Bacillus subtilis ATCC 19659 isolates acting as inhibitors of the adhesion of Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 29213 onto titanium and stainless steel surfaces and its antimicrobial activity. RESULTS The adhesion of the strains to the stainless-steel surface was higher than that of titanium. Preconditioning of titanium and stainless-steel surfaces with 10 mg mL-1 lipopeptide reduced the adhesion of E. coli by up to 93% and the adhesion of S. aureus by up to 99.9%, suggesting the strong potential of lipopeptides in the control of orthopedic infections. The minimal inhibitory concentration and minimum bactericidal concentration were 10 and 240 µg mL-1 for E. coli and S. aureus, respectively. CONCLUSION The lipopeptide produced by Bacillus subtilis ATCC 19659 presented high biotechnological application in human health against orthopedic implants infections.
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Affiliation(s)
- Mauro Ezio Eustáquio Pires
- Biotechnology Process and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinopolis, MG, Zip Code: 35501296, Brazil
| | - Adriano Guimarães Parreira
- Biotechnology Process and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinopolis, MG, Zip Code: 35501296, Brazil
| | - Tuânia Natacha Lopes Silva
- Biotechnology Process and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinopolis, MG, Zip Code: 35501296, Brazil
| | - Heloísa Carneiro Colares
- Biotechnology Process and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinopolis, MG, Zip Code: 35501296, Brazil
| | - José Antonio da Silva
- Biotechnology Process and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinopolis, MG, Zip Code: 35501296, Brazil
| | - Juliana Teixeira de Magalhães
- Microbiology Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinópolis, MG, 35501296, Brazil
| | - Alexsandro Sobreira Galdino
- Microbial Biotechnology Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinopolis, MG, 35501296, Brazil
| | - Daniel Bonoto Gonçalves
- Biotechnology Process and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinopolis, MG, Zip Code: 35501296, Brazil
| | - José Mauro Granjeiro
- Bioengineering Laboratory, National Institute of Metrology, Quality and Technology, Xerem, Duque de Caxias, RJ, 25250-020, Brazil.,Dental Clinical Research, Dentistry School, Fluminense Federal University, Niteroi, Rio de Janeiro, 24020-140, Brazil
| | - Paulo Afonso Granjeiro
- Biotechnology Process and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of Sao Joao Del-Rei, Divinopolis, MG, Zip Code: 35501296, Brazil
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45
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Rodríguez‐López L, Rincón‐Fontán M, Vecino X, Moldes AB, Cruz JM. Biodegradability Study of the Biosurfactant Contained in a Crude Extract from Corn Steep Water. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12338] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Lorena Rodríguez‐López
- Chemical Engineering Department, School of Industrial Engineering – Módulo Tecnológico Industrial (MTI)University of Vigo Campus As Lagoas‐Marcosende, 36310 Vigo Spain
| | - Myriam Rincón‐Fontán
- Chemical Engineering Department, School of Industrial Engineering – Módulo Tecnológico Industrial (MTI)University of Vigo Campus As Lagoas‐Marcosende, 36310 Vigo Spain
| | - Xanel Vecino
- Chemical Engineering Department, Barcelona East School of Engineering (EEBE)Polytechnic University of Catalonia (UPC)‐Barcelona TECH Campus Diagonal‐Besòs, 08930 Barcelona Spain
- Barcelona Research Center for Multiscale Science and Engineering Campus Diagonal‐Besòs, 08930 Barcelona Spain
| | - Ana B. Moldes
- Chemical Engineering Department, School of Industrial Engineering – Módulo Tecnológico Industrial (MTI)University of Vigo Campus As Lagoas‐Marcosende, 36310 Vigo Spain
| | - Jose M. Cruz
- Chemical Engineering Department, School of Industrial Engineering – Módulo Tecnológico Industrial (MTI)University of Vigo Campus As Lagoas‐Marcosende, 36310 Vigo Spain
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46
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Azeem M, Barba-Aliaga M, Borg-Karlson AK, Terenius O, Broberg A, Rajarao GK. Heterobasidion-growth inhibiting Bacillus subtilis A18 exhibits medium- and age-dependent production of lipopeptides. Microbiol Res 2019; 223-225:129-136. [DOI: 10.1016/j.micres.2019.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 04/14/2019] [Accepted: 04/20/2019] [Indexed: 10/27/2022]
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47
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Soussi S, Essid R, Hardouin J, Gharbi D, Elkahoui S, Tabbene O, Cosette P, Jouenne T, Limam F. Utilization of Grape Seed Flour for Antimicrobial Lipopeptide Production by Bacillus amyloliquefaciens C5 Strain. Appl Biochem Biotechnol 2019; 187:1460-1474. [PMID: 30251231 DOI: 10.1007/s12010-018-2885-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 09/10/2018] [Indexed: 10/28/2022]
Abstract
An endophytic Bacillus amyloliquefaciens strain called C5, able to produce biosurfactant lipopeptides with a broad antibacterial activity spectrum, has been isolated from the roots of olive tree. Optimization of antibacterial activity was undertaken using grape seed flour (GSF) substrate at 0.02, 0.2, and 2% (w/v) in M9 medium. Strain C5 exhibited optimal growth and antimicrobial activity (MIC value of 60 μg/ml) when incubated in the presence of 0.2% GSF while lipopeptide production culminated at 2% GSF. Thin layer chromatography analysis of lipopeptide extract revealed the presence of at least three active spots at Rf 0.35, 0.59, and 0.72 at 0.2% GSF. Data were similar to those obtained in LB-rich medium. MALDI-TOF/MS analysis of lipopeptide extract obtained from 0.2% GSF substrate revealed the presence of surfactin and bacillomycin D. These results show that GSF could be used as a low-cost culture medium supplement for optimizing the production of biosurfactants by strain C5.
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Affiliation(s)
- Siwar Soussi
- Laboratory of Bioactive Substances, Center of Biotechnology of Borj Cedria, BP-901, 2050, Hammam-lif, Tunisia.,University of Carthage, Avenue de la République, BP-77, 1054, Amilcar, Tunisia
| | - Rym Essid
- Laboratory of Bioactive Substances, Center of Biotechnology of Borj Cedria, BP-901, 2050, Hammam-lif, Tunisia
| | - Julie Hardouin
- Polymers, Biopolymers, Surface Laboratory, UMR 6270 CNRS, Normandie University, Mont-Saint-Aignan, France.,Proteomic Platform PISSARO, 76821, Mont-Saint-Aignan, France
| | - Dorra Gharbi
- Laboratory of Bioactive Substances, Center of Biotechnology of Borj Cedria, BP-901, 2050, Hammam-lif, Tunisia.,University of Carthage, Avenue de la République, BP-77, 1054, Amilcar, Tunisia
| | - Salem Elkahoui
- Laboratory of Bioactive Substances, Center of Biotechnology of Borj Cedria, BP-901, 2050, Hammam-lif, Tunisia
| | - Olfa Tabbene
- Laboratory of Bioactive Substances, Center of Biotechnology of Borj Cedria, BP-901, 2050, Hammam-lif, Tunisia
| | - Pascal Cosette
- Polymers, Biopolymers, Surface Laboratory, UMR 6270 CNRS, Normandie University, Mont-Saint-Aignan, France.,Proteomic Platform PISSARO, 76821, Mont-Saint-Aignan, France
| | - Thierry Jouenne
- Polymers, Biopolymers, Surface Laboratory, UMR 6270 CNRS, Normandie University, Mont-Saint-Aignan, France.,Proteomic Platform PISSARO, 76821, Mont-Saint-Aignan, France
| | - Ferid Limam
- Laboratory of Bioactive Substances, Center of Biotechnology of Borj Cedria, BP-901, 2050, Hammam-lif, Tunisia.
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48
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Jemil N, Hmidet N, Manresa A, Rabanal F, Nasri M. Isolation and characterization of kurstakin and surfactin isoforms produced by Enterobacter cloacae C3 strain. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:7-18. [PMID: 30324699 DOI: 10.1002/jms.4302] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 10/08/2018] [Accepted: 10/09/2018] [Indexed: 06/08/2023]
Abstract
In this work, the extraction, structural analysis, and identification as well as antimicrobial, anti-adhesive, and antibiofilm activities of lipopeptides produced by Enterobacter cloacae C3 strain were studied. A combination of chromatographic and spectroscopic techniques offers opportunities for a better characterization of the biosurfactant structure. Thin layer chromatography (TLC) and HPLC for amino acid composition determination are used. Efficient spectroscopic techniques have been utilized for investigations on the biochemical structure of biosurfactants, such as Fourier transform infrared (FT-IR) spectroscopy and mass spectrometry analysis. This is the first work describing the production of different isoforms belonging to kurstakin and surfactin families by E cloacae strain. Three kurstakin homologues differing by the fatty acid chain length from C10 to C12 were detected. The spectrum of lipopeptides belonging to surfactin family contains various isoforms differing by the fatty acid chain length as well as the amino acids at positions four and seven. Lipopeptide C3 extract exhibited important antibacterial activity against Gram-positive and Gram-negative bacteria, antifungal activity, and interesting anti-adhesive and disruptive properties against biofilm formation by human pathogenic bacterial strains: Salmonella typhimurium, Klebsiella pneumoniae, Staphylococcus aureus, Bacillus cereus, and Candida albicans.
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Affiliation(s)
- Nawel Jemil
- Laboratoire de Génie Enzymatique et de Microbiologie, Université de Sfax, Ecole Nationale d'Ingénieurs de Sfax, Sfax, Tunisia
| | - Noomen Hmidet
- Laboratoire de Génie Enzymatique et de Microbiologie, Université de Sfax, Ecole Nationale d'Ingénieurs de Sfax, Sfax, Tunisia
| | - Angeles Manresa
- Section of Microbiology, Department of Biology, Health and Environment, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Francesc Rabanal
- Section of Organic Chemistry, Department of Inorganic and Organic Chemistry, Faculty of Chemistry, University of Barcelona, Barcelona, Spain
| | - Moncef Nasri
- Laboratoire de Génie Enzymatique et de Microbiologie, Université de Sfax, Ecole Nationale d'Ingénieurs de Sfax, Sfax, Tunisia
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49
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Jamshidi-Aidji M, Morlock GE. Fast Equivalency Estimation of Unknown Enzyme Inhibitors in Situ the Effect-Directed Fingerprint, Shown for Bacillus Lipopeptide Extracts. Anal Chem 2018; 90:14260-14268. [DOI: 10.1021/acs.analchem.8b03407] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Maryam Jamshidi-Aidji
- Chair of Food Science, Institute of Nutritional Science, and Interdisciplinary Research Center, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
| | - Gertrud E. Morlock
- Chair of Food Science, Institute of Nutritional Science, and Interdisciplinary Research Center, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
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50
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Fira D, Dimkić I, Berić T, Lozo J, Stanković S. Biological control of plant pathogens by Bacillus species. J Biotechnol 2018; 285:44-55. [DOI: 10.1016/j.jbiotec.2018.07.044] [Citation(s) in RCA: 228] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 07/20/2018] [Accepted: 07/31/2018] [Indexed: 11/16/2022]
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