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Ferroni Passos T, Nitschke M. The combined effect of pH and NaCl on the susceptibility of Listeria monocytogenes to rhamnolipids. Food Res Int 2024; 192:114744. [PMID: 39147550 DOI: 10.1016/j.foodres.2024.114744] [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: 06/10/2024] [Revised: 07/09/2024] [Accepted: 07/10/2024] [Indexed: 08/17/2024]
Abstract
The use of natural and sustainable additives, that are less aggressive to the environment, is a trend in the food industry. Rhamnolipids (RL) biosurfactants have shown potential for controlling food pathogens however, due to the presence of free carboxyl groups, the pH and ionic strength may influence the properties of such surfactants. In this study, we describe the antimicrobial activity of RL under different pH values and NaCl concentrations, towards both planktonic and biofilms of Listeria monocytogenes. RL were effective at pH 5.0 and the addition of 5 % NaCl improved the bactericidal efficacy for planktonic and sessile cells. The effect of NaCl was more pronounced at pH above 6 showing a significant increase in RL antimicrobial activity. At pH 7.0 planktonic population was eradicated by RL only when salt was present whereas biofilm viability was decreased by 5 log with MBIC varying from > 2500.0 mg/L (RL) to 39.0 mg/L (RL + 5 % NaCl). Larger vesicular and lamellar RL self-assembly structures were predominant when NaCl was present, suggesting their association with the antimicrobial activity observed. The pH and ionic strength of the medium are important parameters to be considered for the development of RL-based strategies to control L. monocytogenes.
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Affiliation(s)
- Tathiane Ferroni Passos
- University of São Paulo (USP), São Carlos Institute of Chemistry (IQSC), Av. Trabalhador São Carlense, 400, CP-780, São Carlos, SP - CEP 13566-590, Brazil
| | - Marcia Nitschke
- University of São Paulo (USP), São Carlos Institute of Chemistry (IQSC), Av. Trabalhador São Carlense, 400, CP-780, São Carlos, SP - CEP 13566-590, Brazil.
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Botcazon C, Ramos-Martín F, Rodríguez-Moraga N, Bergia T, Acket S, Sarazin C, Rippa S. Rhamnolipids and fengycins interact differently with biomimetic lipid membrane models of Botrytis cinerea and Sclerotinia sclerotiorum: Lipidomics profiles and biophysical studies. Biophys Chem 2024; 314:107305. [PMID: 39154582 DOI: 10.1016/j.bpc.2024.107305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 07/03/2024] [Accepted: 07/25/2024] [Indexed: 08/20/2024]
Abstract
Rhamnolipids (RLs) and Fengycins (FGs) are biosurfactants with very promising antifungal properties proposed to reduce the use of synthetic pesticides in crops. They are amphiphilic molecules, both known to target the plasma membrane. They act differently on Botrytis cinerea and Sclerotinia sclerotiorum, two close Sclerotiniaceae phytopathogenic fungi. RLs are more efficient at permeabilizing S. sclerotiorum, and FGs are more efficient at permeabilizing B. cinerea mycelial cells. To study the link between the lipid membrane composition and the activity of RLs and FGs, we analyzed the lipid profiles of B. cinerea and S. sclerotiorum. We determined that unsaturated or saturated C18 and saturated C16 fatty acids are predominant in both fungi. We also showed that phosphatidylethanolamine (PE), phosphatidic acid (PA), and phosphatidylcholine (PC) are the main phospholipids (in this order) in both fungi, with more PA and less PC in S. sclerotiorum. The results were used to build biomimetic lipid membrane models of B. cinerea and S. sclerotiorum for all-atom molecular dynamic simulations and solid-state NMR experiments to more deeply study the interactions between RLs or FGs with different compositions of lipid bilayers. Distinctive effects are exerted by both compounds. RLs completely insert in all the studied model membranes with a fluidification effect. FGs tend to form aggregates out of the bilayer and insert individually more easily into the models representative of B. cinerea than those of S. sclerotiorum, with a higher fluidification effect. These results provide new insights into the lipid composition of closely related fungi and its impact on the mode of action of very promising membranotropic antifungal molecules for agricultural applications.
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Affiliation(s)
- Camille Botcazon
- Unité Génie Enzymatique et Cellulaire, CNRS, UMR 7025, Alliance Sorbonne Université, Université de technologie de Compiègne, Compiègne, France
| | - Francisco Ramos-Martín
- Unité Génie Enzymatique et Cellulaire, CNRS, UMR 7025, Université de Picardie Jules Verne, Amiens, France
| | - Nely Rodríguez-Moraga
- Unité Génie Enzymatique et Cellulaire, CNRS, UMR 7025, Université de Picardie Jules Verne, Amiens, France
| | - Thomas Bergia
- Unité Génie Enzymatique et Cellulaire, CNRS, UMR 7025, Alliance Sorbonne Université, Université de technologie de Compiègne, Compiègne, France
| | - Sébastien Acket
- Unité Génie Enzymatique et Cellulaire, CNRS, UMR 7025, Alliance Sorbonne Université, Université de technologie de Compiègne, Compiègne, France
| | - Catherine Sarazin
- Unité Génie Enzymatique et Cellulaire, CNRS, UMR 7025, Université de Picardie Jules Verne, Amiens, France.
| | - Sonia Rippa
- Unité Génie Enzymatique et Cellulaire, CNRS, UMR 7025, Alliance Sorbonne Université, Université de technologie de Compiègne, Compiègne, France.
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Ma Y, Li Y, Yang S, Li Y, Zhu Z. Biocontrol Potential of Trichoderma asperellum Strain 576 against Exserohilum turcicum in Zea mays. J Fungi (Basel) 2023; 9:936. [PMID: 37755043 PMCID: PMC10532967 DOI: 10.3390/jof9090936] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
Maize is a crucial cereal crop in China, serving both as a staple food and an essential industrial resource. Northern corn leaf blight (NCLB) is a disease of corn caused by a fungus, Exserohilum turcicum (sexual stage Setosphaeria turcica). This study aimed to assess the biocontrol potential of various Trichoderma strains against Exserohilum turcicum 101 in Jilin, China. Through dual culture tests, the Trichoderma strains were categorized into four groups based on their antagonistic abilities. Eleven Trichoderma strains exhibited strong antagonistic behavior, with comparable or faster growth rates than E. turcicum 101. Microscopic observations confirmed that T. asperellum 576 hyphae effectively encircled E. turcicum 101 hyphae, reinforcing their antagonistic behavior. The production of non-volatile and volatile substances by the Trichoderma strains was evaluated, with T. asperellum 576 showing the highest potency in producing non-volatile and volatile substances, leading to an impressive 80.81% and 65.86% inhibition of E. turcicum 101 growth. Remarkably, co-culture suspensions of T. asperellum 576 + E. turcicum 101 and T. atroviride 393 + E. turcicum 101 exhibited strong antifungal activity. Furthermore, the activities of chitinase, β-1.3-glucanase, and cellulase were evaluated using the 3, 5-dinitrosalicylic acid (DNS) method. T. asperellum 576 + E. turcicum 101 displayed stronger cell wall degradation enzyme activity compared to T. atroviride 393 + E. turcicum 101, with values of 8.34 U/mL, 3.42 U/mL, and 7.75 U/mL, respectively. In greenhouse conditions, the application of a 107 spores/mL conidia suspension of T. asperellum 576 significantly enhanced maize seed germination and plant growth while effectively suppressing E. turcicum 101 infection. Maize seedlings inoculated/treated with both E. turcicum 101 and T. asperellum 576 demonstrated substantial improvements compared to those inoculated solely with E. turcicum 101. The T. asperellum 576 treatment involved a 107 spores/mL conidia suspension applied through a combination of foliar spray and soil drench. These findings highlight T. asperellum 576 as a promising biocontrol candidate against northern leaf blight in maize. Its antagonistic behavior, production of inhibitory compounds, and promotion of plant growth all contribute to its potential as an effective biocontrol agent for disease management.
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Affiliation(s)
| | | | | | | | - Zhaoxiang Zhu
- Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun 130118, China; (Y.M.); (Y.L.); (S.Y.); (Y.L.)
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Mehmood N, Saeed M, Zafarullah S, Hyder S, Rizvi ZF, Gondal AS, Jamil N, Iqbal R, Ali B, Ercisli S, Kupe M. Multifaceted Impacts of Plant-Beneficial Pseudomonas spp. in Managing Various Plant Diseases and Crop Yield Improvement. ACS OMEGA 2023; 8:22296-22315. [PMID: 37396244 PMCID: PMC10308577 DOI: 10.1021/acsomega.3c00870] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/18/2023] [Indexed: 07/04/2023]
Abstract
The modern agricultural system has issues with the reduction of agricultural productivity due to a wide range of abiotic and biotic stresses. It is also expected that in the future the entire world population may rapidly increase and will surely demand more food. Farmers now utilize a massive quantity of synthetic fertilizers and pesticides for disease management and to increase food production. These synthetic fertilizers badly affect the environment, the texture of the soil, plant productivity, and human health. However, agricultural safety and sustainability depend on an ecofriendly and inexpensive biological application. In contrast to synthetic fertilizers, soil inoculation with plant-growth-promoting rhizobacteria (PGPR) is one of the excellent alternative options. In this regard, we focused on the best PGPR genera, Pseudomonas, which exists in the rhizosphere as well as inside the plant's body and plays a role in sustainable agriculture. Many Pseudomonas spp. control plant pathogens and play an effective role in disease management through direct and indirect mechanisms. Pseudomonas spp. fix the amount of atmospheric nitrogen, solubilize phosphorus and potassium, and also produce phytohormones, lytic enzymes, volatile organic compounds, antibiotics, and secondary metabolites during stress conditions. These compounds stimulate plant growth by inducing systemic resistance and by inhibiting the growth of pathogens. Furthermore, pseudomonads also protect plants during different stress conditions like heavy metal pollution, osmosis, temperature, oxidative stress, etc. Now, several Pseudomonas-based commercial biological control products have been promoted and marketed, but there are a few limitations that hinder the development of this technology for extensive usage in agricultural systems. The variability among the members of Pseudomonas spp. draws attention to the huge research interest in this genus. There is a need to explore the potential of native Pseudomonas spp. as biocontrol agents and to use them in biopesticide development to support sustainable agriculture.
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Affiliation(s)
- Najaf Mehmood
- Department
of Botany, Government College Women University
Sialkot, Sialkot 51310, Pakistan
| | - Mahnoor Saeed
- Department
of Botany, Government College Women University
Sialkot, Sialkot 51310, Pakistan
| | - Sana Zafarullah
- Department
of Botany, Government College Women University
Sialkot, Sialkot 51310, Pakistan
| | - Sajjad Hyder
- Department
of Botany, Government College Women University
Sialkot, Sialkot 51310, Pakistan
| | - Zarrin Fatima Rizvi
- Department
of Botany, Government College Women University
Sialkot, Sialkot 51310, Pakistan
| | - Amjad Shahzad Gondal
- Department
of Plant Pathology, Bahauddin Zakariya University, Multan 60000, Pakistan
| | - Nuzhat Jamil
- Department
of Botany, University of the Punjab, Quaid-i-Azam Campus, Lahore 54590, Pakistan
| | - Rashid Iqbal
- Department
of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur Pakistan, Bahawalpur 63100, Pakistan
| | - Baber Ali
- Department
of Plant Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Sezai Ercisli
- Department
of Horticulture, Faculty of Agriculture, Ataturk University, Erzurum 25240, Türkiye
- HGF
Agro, Ata Teknokent, Erzurum TR-25240, Türkiye
| | - Muhammed Kupe
- Department
of Horticulture, Faculty of Agriculture, Ataturk University, Erzurum 25240, Türkiye
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Zhao F, Wang B, Yuan M, Ren S. Comparative study on antimicrobial activity of mono-rhamnolipid and di-rhamnolipid and exploration of cost-effective antimicrobial agents for agricultural applications. Microb Cell Fact 2022; 21:221. [PMID: 36274139 PMCID: PMC9590131 DOI: 10.1186/s12934-022-01950-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 10/13/2022] [Indexed: 11/28/2022] Open
Abstract
Background Chemical pesticides have defects in crop diseases control, such as narrow antimicrobial spectrum, chemicals residue risk and harm to farmland ecosystem. Antimicrobial agents from microbial sources are highly interested in agriculture. Studies showed that rhamnolipid biosurfactants possessed certain antimicrobial activity. The structural differences in rhamnolipid inevitably affect their activities. But the antimicrobial effect of mono-rhamnolipid and di-rhamnolipid is unknown. Rhamnolipid with unique structure can be produced using specific microbial cell factory. Results Different types of rhamnolipid were produced from different Pseudomonas aeruginosa strains. Rha-C10-C10 and Rha-Rha-C10-C10 were the main homologues in the separated mono-rhamnolipid and di-rhamnolipid, respectively. Both mono-rhamnolipid and di-rhamnolipid exhibited certain antimicrobial activity against the tested microbial strains, especially the fungi and Gram-positive bacteria. But mono-rhamnolipid was superior to di-rhamnolipid, with inhibition zone diameters larger than 25 mm and inhibition rate higher than 90%. The IC50 values of mono-rhamnolipid were lower than 5 mg/L against the tested bacterium and fungus, whereas the IC50 values of di-rhamnolipid were ranged from 10 mg/L to 20 mg/L. Mono-rhamnolipid stimulated the tested strains to generate higher level of intracellular ROS. Mono-rhamnolipid exhibited better antimicrobial activity to the potential agricultural pathogens, such as Alternaria alternata, Pantoea agglomerans and Cladosporium sp. The mono-rhamnolipid crude extract of strain P. aeruginosa SGΔrhlC can replace the separated mono-rhamnolipid. After 50 times dilution, the fermentation broth of the mono-rhamnolipid producing strain SGΔrhlC exhibited equal antimicrobial effect to mono-rhamnolipid (200 mg/L). Prospects of mono-rhamnolipid were also discussed for antimicrobial applications in agriculture. Conclusions This work discovered that mono-rhamnolipid was superior to di-rhamnolipid on antimicrobial activity for agricultural applications. Mono-rhamnolipid is an excellent candidate for agricultural biocontrol. The knockout strain P. aeruginosa SGΔrhlC is an excellent microbial cell factory for high producing mono-rhamnolipid. Its mono-rhamnolipid crude extract and its diluted fermentation broth are cost-effective antimicrobial agents. This work provided new insights to develop green and efficient antimicrobial agents for agricultural applications.
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Raouani NEH, Claverie E, Randoux B, Chaveriat L, Yaseen Y, Yada B, Martin P, Cabrera JC, Jacques P, Reignault P, Magnin-Robert M, Lounès-Hadj Sahraoui A. Bio-Inspired Rhamnolipids, Cyclic Lipopeptides and a Chito-Oligosaccharide Confer Protection against Wheat Powdery Mildew and Inhibit Conidia Germination. Molecules 2022; 27:molecules27196672. [PMID: 36235207 PMCID: PMC9571057 DOI: 10.3390/molecules27196672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 11/06/2022] Open
Abstract
Plant protection is mainly based on the application of synthetic pesticides to limit yield losses resulting from diseases. However, the use of more eco-friendly strategies for sustainable plant protection has become a necessity that could contribute to controlling pathogens through a direct antimicrobial effect and/or an induction of plant resistance. Three different families of natural or bioinspired compounds originated from bacterial or fungal strains have been evaluated to protect wheat against powdery mildew, caused by the biotrophic Blumeria graminis f.sp. tritici (Bgt). Thus, three bio-inspired mono-rhamnolipids (smRLs), three cyclic lipopeptides (CLPs, mycosubtilin (M), fengycin (F), surfactin (S)) applied individually and in mixtures (M + F and M + F + S), as well as a chitosan oligosaccharide (COS) BioA187 were tested against Bgt, in planta and in vitro. Only the three smRLs (Rh-Eth-C12, Rh-Est-C12 and Rh-Succ-C12), the two CLP mixtures and the BioA187 led to a partial protection of wheat against Bgt. The higher inhibitor effects on the germination of Bgt spores in vitro were observed from smRLs Rh-Eth-C12 and Rh-Succ-C12, mycosubtilin and the two CLP mixtures. Taking together, these results revealed that such molecules could constitute promising tools for a more eco-friendly agriculture.
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Affiliation(s)
- Nour El Houda Raouani
- Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), Université Littoral Côte d’Opale, CEDEX CS 80699, 62228 Calais, France
| | - Elodie Claverie
- Materia Nova ASBL, Avenue du Champ de Mars 6, 7000 Mons, Belgium
| | - Béatrice Randoux
- Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), Université Littoral Côte d’Opale, CEDEX CS 80699, 62228 Calais, France
| | - Ludovic Chaveriat
- ULR 7519—Unité Transformations & Agroressources, Université d’Artois, UnilaSalle, CEDEX CS 20819, 62408 Béthune, France
| | - Yazen Yaseen
- Lipofabrik, Parc d’Activités du Mélantois, 917 Rue des Saules, 59810 Lesquin, France
| | - Bopha Yada
- Materia Nova ASBL, Avenue du Champ de Mars 6, 7000 Mons, Belgium
| | - Patrick Martin
- ULR 7519—Unité Transformations & Agroressources, Université d’Artois, UnilaSalle, CEDEX CS 20819, 62408 Béthune, France
| | | | - Philippe Jacques
- JUNIA, Joint Research Unit UMRt 1158-INRAE, BioEcoAgro, Équipe Métabolites Spécialisés d’Origine Végétale, University Lille, INRAE, University Liège, UPJV, University Artois, ULCO, 48, Boulevard Vauban, CEDEX BP 41290, 59014 Lille, France
- Joint Research Unit 1158 BioEcoAgro, Équipe Métabolites Spécialisés d’Origine Végétale, Microbial Processes and Interactions, TERRA Research Centre, Gembloux Agro-Bio Tech, Université de Liège, 5030 Gembloux, Belgium
| | - Philippe Reignault
- Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), Université Littoral Côte d’Opale, CEDEX CS 80699, 62228 Calais, France
| | - Maryline Magnin-Robert
- Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), Université Littoral Côte d’Opale, CEDEX CS 80699, 62228 Calais, France
- Correspondence: (M.M.-R.); (A.L.-H.S.)
| | - Anissa Lounès-Hadj Sahraoui
- Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), Université Littoral Côte d’Opale, CEDEX CS 80699, 62228 Calais, France
- Correspondence: (M.M.-R.); (A.L.-H.S.)
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Botcazon C, Bergia T, Lecouturier D, Dupuis C, Rochex A, Acket S, Nicot P, Leclère V, Sarazin C, Rippa S. Rhamnolipids and fengycins, very promising amphiphilic antifungal compounds from bacteria secretomes, act on Sclerotiniaceae fungi through different mechanisms. Front Microbiol 2022; 13:977633. [PMID: 36246282 PMCID: PMC9557291 DOI: 10.3389/fmicb.2022.977633] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
Rhamnolipids (RLs) and fengycins (FGs) are amphiphilic lipid compounds from bacteria secretomes proposed to replace synthetic pesticides for crop protection. They both display plant defense triggering properties and direct antimicrobial activities. In particular, they have well reported antifungal effects against phytopathogenic fungi. RLs and FGs are considered to act through a direct interaction with membrane lipids and a destabilization of microorganism plasma membrane, thereby limiting the risk of resistance emergence. The main objective of this work was to gain insights in the antimycelial mode of action of these metabolites to promote them as environment and human health friendly biocontrol solutions. Their biocidal effects were studied on two Sclerotiniaceae fungi responsible for diseases in numerous plant species worldwide. We show here that different strains of Botrytis cinerea and Sclerotinia sclerotiorum have opposite sensitivities to RLs and FGs on plate experiments. Overall, B. cinerea is more sensitive to FGs while S. sclerotiorum is more sensitive to RLs. Electron microscopy observations demonstrated that RLs induce mycelial destructuring by asperities emergence and hyphal fusions whereas FGs promote swelling and formation of vesicle-like structures due to vacuole fusions and autophagy. Permeability studies, phosphatidylserine externalization and reactive oxygen species production assessments showed a programmed cell death triggering by RLs at medium concentrations (until 50 μg mL−1) and necrosis characteristics at higher concentration. Programmed cell death was always observed on hyphae treated with FGs. Quantifications of mycelial ergosterol content indicated that a higher ergosterol rate in S. sclerotiorum correlates with increasing sensitivity to RLs. Oppositely, a lower ergosterol rate in B. cinerea correlates with increasing sensitivity to FGs, which was confirmed by ergosterol biosynthesis inhibition with tebuconazole. This gain of knowledge will help to better understand the mode of action of RLs and FGs to fight specific plant fungal diseases.
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Affiliation(s)
- Camille Botcazon
- Unité de Génie Enzymatique et Cellulaire, CNRS UMR 7025, Sorbonne Universités, Université de Technologie de Compiègne, Compiègne, France
| | - Thomas Bergia
- Unité de Génie Enzymatique et Cellulaire, CNRS UMR 7025, Sorbonne Universités, Université de Technologie de Compiègne, Compiègne, France
| | - Didier Lecouturier
- Charles Viollette Institute, UMRt BioEcoAgro 1158-INRAe, Métabolites Secondaires d’Origine Microbienne, Université de Lille, Université de Liège, Lille, France
| | - Chloé Dupuis
- Charles Viollette Institute, UMRt BioEcoAgro 1158-INRAe, Métabolites Secondaires d’Origine Microbienne, Université de Lille, Université de Liège, Lille, France
| | - Alice Rochex
- Charles Viollette Institute, UMRt BioEcoAgro 1158-INRAe, Métabolites Secondaires d’Origine Microbienne, Université de Lille, Université de Liège, Lille, France
| | - Sébastien Acket
- Unité de Génie Enzymatique et Cellulaire, CNRS UMR 7025, Sorbonne Universités, Université de Technologie de Compiègne, Compiègne, France
| | - Philippe Nicot
- Centre de Recherche PACA, Domaine Saint Maurice, Unité de Pathologie Végétale, INRAe, Avignon, France
| | - Valérie Leclère
- Charles Viollette Institute, UMRt BioEcoAgro 1158-INRAe, Métabolites Secondaires d’Origine Microbienne, Université de Lille, Université de Liège, Lille, France
| | - Catherine Sarazin
- Unité de Génie Enzymatique et Cellulaire, CNRS UMR 7025, Université de Picardie Jules Verne, Amiens, France
| | - Sonia Rippa
- Unité de Génie Enzymatique et Cellulaire, CNRS UMR 7025, Sorbonne Universités, Université de Technologie de Compiègne, Compiègne, France
- *Correspondence: Sonia Rippa,
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Zhang B, Qin S, Wu Y, Zhang R, Xu Y, Yang C. Rhamnolipids Regulate Lipid Metabolism, Immune Response, and Gut Microbiota in Rats. Front Nutr 2022; 9:886256. [PMID: 35571898 PMCID: PMC9096903 DOI: 10.3389/fnut.2022.886256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/11/2022] [Indexed: 11/13/2022] Open
Abstract
Objectives Gut microbes influence lipid metabolism and immune responses that are key features of metabolic disorders. This study examined effects of bacterial rhamnolipids (RLS) on lipid metabolism, immune response, and gut microbiota in rats. Methods Twenty-four Sprague-Dawley rats were randomly divided into three groups and gavage-fed for seven weeks with normal saline (NCO group), 50 mg/kg bw RLS (RLS1 group), and 100 mg/kg bw RLS (RLS2 group). Results Compared with those of the NCO group, the RLS1 and RLS2 groups showed significantly decreased fat weight, relative fat weight, and adipocyte size (P < 0.05). Furthermore, RLS1 and RLS2 significantly decreased concentrations of triglycerides, low-density lipoprotein-cholesterol, and non-esterified fatty acids and increased high-density lipoprotein-cholesterol levels (P < 0.05). However, the total cholesterol content among the three groups (P > 0.05) were not significantly different. Serum concentrations of interleukin-1β, interleukin-6, and tumor necrosis factor-α were significantly lower in the RLS2 group than those in the NCO group (P < 0.05). The relative mRNA expression of fatty acid synthase was significantly decreased, while those of carnitine palmitoyltransferase-1, carnitine palmitoyltransferase-2, and peroxisome proliferator-activated receptor-gamma coactivator-1α were significantly increased in the RLS2 group compared with those in the NCO group (P < 0.05). Moreover, the relative abundances of Lactobacillus, Roseburia, Ruminococcus-1, and Parabacteroides were significantly higher in the RLS2 group than those in the NCO group (P < 0.05). Conclusion Our findings suggest that RLS reduces fat deposition, inhibits inflammation, regulates intestinal flora, and promotes the proliferation of beneficial bacteria in rats.
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Affiliation(s)
- Bing Zhang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Songke Qin
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Yanping Wu
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Ruiqiang Zhang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Yinglei Xu
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Caimei Yang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agriculture and Forestry University, Hangzhou, China
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Antimicrobial Weapons of Pseudomonas aeruginosa. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1386:223-256. [DOI: 10.1007/978-3-031-08491-1_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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10
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Sass G, Nazik H, Chatterjee P, Shrestha P, Groleau MC, Déziel E, Stevens DA. Altered Pseudomonas Strategies to Inhibit Surface Aspergillus Colonies. Front Cell Infect Microbiol 2021; 11:734296. [PMID: 34746024 PMCID: PMC8570168 DOI: 10.3389/fcimb.2021.734296] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/17/2021] [Indexed: 01/23/2023] Open
Abstract
Pseudomonas aeruginosa and Aspergillus fumigatus infections frequently co-localize in lungs of immunocompromised patients and individuals with cystic fibrosis (CF). The antifungal activity of P. aeruginosa has been described for its filtrates. Pyoverdine and pyocyanin are the principal antifungal P. aeruginosa molecules active against A. fumigatus biofilm metabolism present in iron-limited or iron-replete planktonic P. aeruginosa culture filtrates, respectively. Using various P. aeruginosa laboratory wild-type strains (PA14, PAO1, PAK), we found antifungal activity against Aspergillus colonies on agar. Comparing 36 PA14 and 7 PAO1 mutants, we found that mutants lacking both major siderophores, pyoverdine and pyochelin, display higher antifungal activity on agar than their wild types, while quorum sensing mutants lost antifungal activity. Addition of ferric iron, but not calcium or magnesium, reduced the antifungal effects of P. aeruginosa on agar, whereas iron-poor agar enhanced antifungal effects. Antifungal activity on agar was mediated by PQS and HHQ, via MvfR. Among the MvfR downstream factors, rhamnolipids and elastase were produced in larger quantities by pyoverdine–pyochelin double mutants and showed antifungal activity on agar. In summary, antifungal factors produced by P. aeruginosa on agar differ from those produced by bacteria grown in liquid cultures, are dependent on quorum sensing, and are downregulated by the availability of ferric iron. Rhamnolipids and elastase seem to be major mediators of Pseudomonas’ antifungal activity on a solid surface.
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Affiliation(s)
- Gabriele Sass
- Infectious Disease Research Laboratory, San Jose, CA, United States
| | - Hasan Nazik
- Infectious Disease Research Laboratory, San Jose, CA, United States
| | | | - Pallabi Shrestha
- Infectious Disease Research Laboratory, San Jose, CA, United States
| | - Marie-Christine Groleau
- Centre Armand-Frappier Santé Biotechnologie, Institute National de la Recherche Scientifique (INRS), Laval, QC, Canada
| | - Eric Déziel
- Centre Armand-Frappier Santé Biotechnologie, Institute National de la Recherche Scientifique (INRS), Laval, QC, Canada
| | - David A Stevens
- Infectious Disease Research Laboratory, San Jose, CA, United States.,Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
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11
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Effects of Rhamnolipids on Growth Performance, Immune Function, and Cecal Microflora in Linnan Yellow Broilers Challenged with Lipopolysaccharides. Antibiotics (Basel) 2021; 10:antibiotics10080905. [PMID: 34438955 PMCID: PMC8388811 DOI: 10.3390/antibiotics10080905] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 11/17/2022] Open
Abstract
This present study aimed to investigate the effects of rhamnolipids (RLS) on the growth performance, intestinal morphology, immune function, short-chain fatty acid content, and microflora community in broiler chickens challenged with lipopolysaccharides (LPS). A total of 450 broiler chickens were randomly allocated into three groups: basal diet with no supplement (NCO), basal diet with bacitracin (ANT), and basal diet with rhamnolipids (RLS). After 56 d of feeding, 20 healthy broilers were selected from each group, with half being intraperitoneally injected with lipopolysaccharides (LPS) and the other half with normal saline. Treatments with LPS were labelled LPS-NCO, LPS-ANT, and LPS-RLS, whereas treatments with normal saline were labelled NS-NCO, NS-ANT, and NS-RLS. LPS-challenged birds had lower jejunal villus height and higher crypt depth than unchallenged birds. LPS-RLS broilers had increased jejunal villus height and villus height/crypt depth ratio (V/C) but lower crypt depth than LPS-NCO. Dietary supplementation with RLS reduced the LPS-induced immunological stress. Compared with LPS-NCO, birds in LPS-RLS had lower concentrations of IL-1β, IL-6, and TNF-α. In LPS-challenged broilers, RLS and ANT increased the concentrations of IgA, IgM, and IgY compared with LPS-NCO. In LPS treatments, RLS enhanced the contents of acetic acid, butyrate, isobutyric acid, isovalerate, and valerate more than LPS-NCO birds. High-throughput sequencing indicated that RLS supplementation led to changes in the cecal microbial community of broilers. At the species level, Clostridium-sp-Marseille-p3244 was more abundant in NS-RLS than in NS-NCO broilers. In summary, RLS improved the growth performance and relative abundance of cecal microbiota and reduced the LPS-induced immunological stress in broiler chickens.
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12
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Cloutier M, Prévost MJ, Lavoie S, Feroldi T, Piochon M, Groleau MC, Legault J, Villaume S, Crouzet J, Dorey S, Dìaz De Rienzo MA, Déziel E, Gauthier C. Total synthesis, isolation, surfactant properties, and biological evaluation of ananatosides and related macrodilactone-containing rhamnolipids. Chem Sci 2021; 12:7533-7546. [PMID: 34163844 PMCID: PMC8171317 DOI: 10.1039/d1sc01146d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/22/2021] [Indexed: 01/20/2023] Open
Abstract
Rhamnolipids are a specific class of microbial surfactants, which hold great biotechnological and therapeutic potential. However, their exploitation at the industrial level is hampered because they are mainly produced by the opportunistic pathogen Pseudomonas aeruginosa. The non-human pathogenic bacterium Pantoea ananatis is an alternative producer of rhamnolipid-like metabolites containing glucose instead of rhamnose residues. Herein, we present the isolation, structural characterization, and total synthesis of ananatoside A, a 15-membered macrodilactone-containing glucolipid, and ananatoside B, its open-chain congener, from organic extracts of P. ananatis. Ananatoside A was synthesized through three alternative pathways involving either an intramolecular glycosylation, a chemical macrolactonization or a direct enzymatic transformation from ananatoside B. A series of diasteroisomerically pure (1→2), (1→3), and (1→4)-macrolactonized rhamnolipids were also synthesized through intramolecular glycosylation and their anomeric configurations as well as ring conformations were solved using molecular modeling in tandem with NMR studies. We show that ananatoside B is a more potent surfactant than its macrolide counterpart. We present evidence that macrolactonization of rhamnolipids enhances their cytotoxic and hemolytic potential, pointing towards a mechanism involving the formation of pores into the lipidic cell membrane. Lastly, we demonstrate that ananatoside A and ananatoside B as well as synthetic macrolactonized rhamnolipids can be perceived by the plant immune system, and that this sensing is more pronounced for a macrolide featuring a rhamnose moiety in its native 1 C 4 conformation. Altogether our results suggest that macrolactonization of glycolipids can dramatically interfere with their surfactant properties and biological activity.
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Affiliation(s)
- Maude Cloutier
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS) 531, Boulevard des Prairies Laval (Québec) H7V 1B7 Canada
| | - Marie-Joëlle Prévost
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS) 531, Boulevard des Prairies Laval (Québec) H7V 1B7 Canada
| | - Serge Lavoie
- Laboratoire d'Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, Université du Québec à Chicoutimi 555, Boulevard de l'Université Chicoutimi (Québec) G7H 2B1 Canada
| | - Thomas Feroldi
- Laboratoire d'Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, Université du Québec à Chicoutimi 555, Boulevard de l'Université Chicoutimi (Québec) G7H 2B1 Canada
| | - Marianne Piochon
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS) 531, Boulevard des Prairies Laval (Québec) H7V 1B7 Canada
| | - Marie-Christine Groleau
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS) 531, Boulevard des Prairies Laval (Québec) H7V 1B7 Canada
| | - Jean Legault
- Laboratoire d'Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, Université du Québec à Chicoutimi 555, Boulevard de l'Université Chicoutimi (Québec) G7H 2B1 Canada
| | - Sandra Villaume
- Université de Reims Champagne-Ardenne, INRAE, USC RIBP 1488, SFR Condorcet-FR CNRS 3417 51100 Reims France
| | - Jérôme Crouzet
- Université de Reims Champagne-Ardenne, INRAE, USC RIBP 1488, SFR Condorcet-FR CNRS 3417 51100 Reims France
| | - Stéphan Dorey
- Université de Reims Champagne-Ardenne, INRAE, USC RIBP 1488, SFR Condorcet-FR CNRS 3417 51100 Reims France
| | - Mayri Alejandra Dìaz De Rienzo
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS) 531, Boulevard des Prairies Laval (Québec) H7V 1B7 Canada
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University L3 3AF Liverpool UK
| | - Eric Déziel
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS) 531, Boulevard des Prairies Laval (Québec) H7V 1B7 Canada
| | - Charles Gauthier
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS) 531, Boulevard des Prairies Laval (Québec) H7V 1B7 Canada
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Baskaran SM, Zakaria MR, Mukhlis Ahmad Sabri AS, Mohamed MS, Wasoh H, Toshinari M, Hassan MA, Banat IM. Valorization of biodiesel side stream waste glycerol for rhamnolipids production by Pseudomonas aeruginosa RS6. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 276:116742. [PMID: 33621735 DOI: 10.1016/j.envpol.2021.116742] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 02/06/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Biodiesel side stream waste glycerol was identified as a cheap carbon source for rhamnolipids (RLs) production which at the same time could improve the management of waste. The present study aimed to produce RLs by using Pseudomonas aeruginosa RS6 utilizing waste glycerol as a substrate and to evaluate their physico-chemicals properties. Fermentation conditions such as temperature, initial medium pH, waste glycerol concentration, nitrogen sources and concentrations resulted in different compositions of the mono- and di-RLs produced. The maximum RLs production of 2.73 g/L was obtained when P. aeruginosa RS6 was grown in a basal salt medium supplemented with 1% waste glycerol and 0.2 M sodium nitrate at 35 °C and pH 6.5. At optimal fermentation conditions, the emulsification index (E24) values of cooking oil, diesel oil, benzene, olive oil, petroleum, and kerosene were all above E24=50%. The surface tension reduction obtained from 72.13 mN/m to 29.4-30.4 mN/m was better than the surface activity of some chemical-based surfactants. The RLs produced possessed antimicrobial activities against Gram-negative and Gram-positive bacteria with values ranging from 37% to 77% of growth inhibition when 1 mg/mL of RLs was used. Concentrations of RLs below 1500 μg/mL did not induce phytotoxicity effects on the tested seeds (Vigna radiata) compared to the chemical-based- surfactant, SDS. Furthermore, RLs tested on zebrafish (Danio rerio) embryos only exhibited low acute toxicity with an LC50 value of 72.97 μg/mL at 48 h of exposure suggesting a green and eco-biochemical worthy of future applications to replace chemical-based surfactants.
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Affiliation(s)
- Shobanah Menon Baskaran
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Mohd Rafein Zakaria
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Laboratory of Processing and Product Development, Institute of Plantation Studies, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
| | - Ahmad Syafiq Mukhlis Ahmad Sabri
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Mohd Shamzi Mohamed
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Helmi Wasoh
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Maeda Toshinari
- Department of Biological Functions Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, 808-0196, Japan
| | - Mohd Ali Hassan
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Laboratory of Processing and Product Development, Institute of Plantation Studies, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Ibrahim M Banat
- School of Biomedical Sciences, Faculty of Life and Health Sciences, University of Ulster, Coleraine BT52 1SA, Northern Ireland, UK
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14
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Rodrigues AI, Gudiña EJ, Abrunhosa L, Malheiro AR, Fernandes R, Teixeira JA, Rodrigues LR. Rhamnolipids inhibit aflatoxins production in Aspergillus flavus by causing structural damages in the fungal hyphae and down-regulating the expression of their biosynthetic genes. Int J Food Microbiol 2021; 348:109207. [PMID: 33930837 DOI: 10.1016/j.ijfoodmicro.2021.109207] [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: 11/06/2020] [Revised: 04/05/2021] [Accepted: 04/16/2021] [Indexed: 11/28/2022]
Abstract
Aflatoxins are hepatotoxic and carcinogenic fungal secondary metabolites that usually contaminate crops and represent a serious health hazard for humans and animals worldwide. In this work, the effect of rhamnolipids (RLs) produced by Pseudomonas aeruginosa #112 on the growth and aflatoxins production by Aspergillus flavus MUM 17.14 was studied in vitro. At concentrations between 45 and 1500 mg/L, RLs reduced the mycelial growth of A. flavus by 23-40% and the production of aflatoxins by 93.9-99.5%. Purified mono-RLs and di-RLs exhibited a similar inhibitory activity on fungal growth. However, the RL mixture had a stronger inhibitory effect on aflatoxins production at concentrations up to 190 mg/L, probably due to a synergistic effect resulting from the combination of both congeners. Using transmission electron microscopy, it was demonstrated that RLs damaged the cell wall and the cytoplasmic membrane of the fungus, leading to the loss of intracellular content. This disruptive phenomenon explains the growth inhibition observed. Furthermore, RLs down-regulated the expression of genes aflC, aflE, aflP and aflQ involved in the aflatoxins biosynthetic pathway (6.4, 44.3, 38.1 and 2.0-fold, respectively), which is in agreement with the almost complete inhibition of aflatoxins production. Overall, the results herein gathered demonstrate for the first time that RLs could be used against aflatoxigenic fungi to attenuate the production of aflatoxins, and unraveled some of their mechanisms of action.
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Affiliation(s)
- Ana I Rodrigues
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Eduardo J Gudiña
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
| | - Luís Abrunhosa
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Ana R Malheiro
- Instituto de Investigação e Inovação em Saúde (I3S), Universidade do Porto, 4200-135 Porto, Portugal
| | - Rui Fernandes
- Instituto de Investigação e Inovação em Saúde (I3S), Universidade do Porto, 4200-135 Porto, Portugal
| | - José A Teixeira
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Lígia R Rodrigues
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
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15
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Rhamnolipid the Glycolipid Biosurfactant: Emerging trends and promising strategies in the field of biotechnology and biomedicine. Microb Cell Fact 2021; 20:1. [PMID: 33397389 PMCID: PMC7784359 DOI: 10.1186/s12934-020-01497-9] [Citation(s) in RCA: 102] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/15/2020] [Indexed: 02/06/2023] Open
Abstract
Rhamnolipids (RLs) are surface-active compounds and belong to the class of glycolipid biosurfactants, mainly produced from Pseudomonas aeruginosa. Due to their non-toxicity, high biodegradability, low surface tension and minimum inhibitory concentration values, they have gained attention in various sectors like food, healthcare, pharmaceutical and petrochemicals. The ecofriendly biological properties of rhamnolipids make them potent materials to be used in therapeutic applications. RLs are also known to induce apoptosis and thus, able to inhibit proliferation of cancer cells. RLs can also act as immunomodulators to regulate the humoral and cellular immune systems. Regarding their antimicrobial property, they lower the surface hydrophobicity, destruct the cytoplasmic membrane and lower the critical micelle concentration to kill the bacterial cells either alone or in combination with nisin possibly due to their role in modulating outer membrane protein. RLs are also involved in the synthesis of nanoparticles for in vivo drug delivery. In relation to economic benefits, the post-harvest decay of food can be decreased by RLs because they prevent the mycelium growth, spore germination of fungi and inhibit the emergence of biofilm formation on food. The present review focuses on the potential uses of RLs in cosmetic, pharmaceutical, food and health-care industries as the potent therapeutic agents.
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16
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Rathankumar AK, Saikia K, Ponnusamy SK, Del Rayo Sánchez-Carbente M, Vaidyanathan VK. Rhamnolipid-assisted mycoremediation of polycyclic aromatic hydrocarbons by Trametes hirsuta coupled with enhanced ligninolytic enzyme production. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2020; 70:1260-1267. [PMID: 32603633 DOI: 10.1080/10962247.2020.1790443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 06/06/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
The present study deals with the development of a wood assisted fungal system (WAFS) from wood chips using Trametes hirsuta to remove polycyclic aromatic hydrocarbons (PAHs) in BRW. The WAFS exhibited a 1.4-fold higher ligninolytic enzyme production than free fungi in the effluent. Further, to understand PAHs bioremediation by T. hirsuta, biodegradation along with biosorption were studied in model PAHs, phenanthrene (Phe) and benzo (a) pyrene (BaP), in the presence of synthesized rhamnolipids. The WAFS mineralized up to an average of 91.26% Phe and 87.72 % BaP along with biosorption of 12.35% Phe and 18.36 % BaP within 12 days. Thus, the addition of rhamnolipids showed 1.2-fold enhanced biodegradation. However, rhamnolipid concentrations beyond 50 ppm reduced the degradation efficiency of WAFS. Moreover, the degradation capability of total aromatic hydrocarbon (TAH) in biorefinery wastewater by WAFS is 1.8-fold higher than that of free fungi, which confirms the effectiveness of the system. Implications: Simultaneous application of white-rot fungus along with surfactant into a pollutant environment affects the microenvironment of the fungus and reduces the production of their degradative enzymes. In addition, the requirement of periodical supplement of external nutrient in the real-time matrix for the growth of white rot fungi may trigger competitive growth of indigenous microorganisms. Considering this glitch, the current work utilizes the carpenter waste for the strategical develop a wood assisted fungal system to protect the microenvironment of the fungi in the presence of rhamnolipids and contribute to their survival in real time matrix, with enhanced PAHs degradation efficiency.
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Affiliation(s)
- Abiram Karanam Rathankumar
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRMIST) , Kattankulathur, India
- Centre of Biotechnological Research (CEIB), Universidad Autónoma del Estado de Morelos , Cuernavaca, México
- Laboratoire de génie de l'environnement, Faculté de génie, Université de Sherbrooke , Sherbrooke, Québec, Canada
| | - Kongkona Saikia
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRMIST) , Kattankulathur, India
- Laboratoire de génie de l'environnement, Faculté de génie, Université de Sherbrooke , Sherbrooke, Québec, Canada
| | | | | | - Vinoth Kumar Vaidyanathan
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRMIST) , Kattankulathur, India
- Centre of Biotechnological Research (CEIB), Universidad Autónoma del Estado de Morelos , Cuernavaca, México
- Laboratoire de génie de l'environnement, Faculté de génie, Université de Sherbrooke , Sherbrooke, Québec, Canada
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17
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Sun L, Forauer EC, Brown SRB, D'Amico DJ. Application of bioactive glycolipids to control Listeria monocytogenes biofilms and as post-lethality contaminants in milk and cheese. Food Microbiol 2020; 95:103683. [PMID: 33397615 DOI: 10.1016/j.fm.2020.103683] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/13/2020] [Accepted: 11/17/2020] [Indexed: 11/18/2022]
Abstract
Listeria monocytogenes can form persistent biofilms on food processing surfaces, resulting in cross-contamination of food products, including milk and milk products. Natural glycolipids are a promising intervention to control undesirable microbes due to their antimicrobial activity and low toxicity. This study aimed to determine the antimicrobial activity of glycolipids to control L. monocytogenes biofilms as well as in milk and on Queso Fresco. Application of a natural glycolipid product significantly reduced biofilm-associated L. monocytogenes on both polystyrene and stainless steel at concentrations as low as 45 mg/L. When added to UHT skim milk, a concentration of 1000 mg/L inhibited L. monocytogenes growth through 7 days of storage at 7 °C, and application of 1300 and 1500 mg/L reduced counts to levels below the limit of enumeration at day 21. In contrast, 2000 mg/L were necessary to inhibit growth through 7 days in whole milk. Glycolipid solutions at concentrations ≥10% reduced L. monocytogenes counts on Queso Fresco through 7 days when applied as a dip. Overall, natural glycolipids have potential as a natural alternative for the removal of biofilms and as an antimicrobial to control L. monocytogenes in milk and milk products with short shelf lives.
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Affiliation(s)
- Lang Sun
- Department of Animal Science, University of Connecticut, Agricultural Biotechnology Laboratory, 1390 Storrs Road, U-4163, Storrs, CT, 06269-4163, USA
| | - Emily C Forauer
- Department of Pathobiology and Veterinary Science, University of Connecticut, 61 North Eagleville Road, U-3089, Storrs, CT, 06269-3089, USA
| | - Stephanie R B Brown
- Department of Animal Science, University of Connecticut, Agricultural Biotechnology Laboratory, 1390 Storrs Road, U-4163, Storrs, CT, 06269-4163, USA
| | - Dennis J D'Amico
- Department of Animal Science, University of Connecticut, Agricultural Biotechnology Laboratory, 1390 Storrs Road, U-4163, Storrs, CT, 06269-4163, USA.
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18
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Eslami P, Hajfarajollah H, Bazsefidpar S. Recent advancements in the production of rhamnolipid biosurfactants by Pseudomonas aeruginosa. RSC Adv 2020; 10:34014-34032. [PMID: 35519061 PMCID: PMC9056861 DOI: 10.1039/d0ra04953k] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 08/24/2020] [Indexed: 01/10/2023] Open
Abstract
Rhamnolipid (RL) biosurfactant which is produced by Pseudomonas species is one of the most effective surface-active agents investigated in the literature. Over the years, many efforts have been made and an array of techniques has been developed for the isolation of RL produced strains as well as RL homolog characterization. Reports show that RL productivity by the best-known producer, Pseudomonas aeruginosa, is very diverse, from less than 1 gr/l to more than 200 g L-1. There are some major parameters that can affect RL productivity. These are culture conditions, medium composition, the mode of operation (batch, fed-batch and continuous), bioengineering/gene manipulation and finally extraction methods. The present paper seeks to provide a comprehensive overview on the production of rhamnolipid biosurfactant by different species of Pseudomonas bacteria. In addition, we have extensively reviewed their potential for possible future applications.
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Affiliation(s)
- Parisa Eslami
- Amirkabir University of Technology, Chemical Engineering Department Iran
| | - Hamidreza Hajfarajollah
- Amirkabir University of Technology, Chemical Engineering Department Iran
- Chemistry and Chemical Engineering Research Center of Iran, Chemical Engineering Department Iran +98 2122734406
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19
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Crouzet J, Arguelles-Arias A, Dhondt-Cordelier S, Cordelier S, Pršić J, Hoff G, Mazeyrat-Gourbeyre F, Baillieul F, Clément C, Ongena M, Dorey S. Biosurfactants in Plant Protection Against Diseases: Rhamnolipids and Lipopeptides Case Study. Front Bioeng Biotechnol 2020; 8:1014. [PMID: 33015005 PMCID: PMC7505919 DOI: 10.3389/fbioe.2020.01014] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 08/03/2020] [Indexed: 12/17/2022] Open
Abstract
Biosurfactants are amphiphilic surface-active molecules that are produced by a variety of microorganisms including fungi and bacteria. Pseudomonas, Burkholderia, and Bacillus species are known to secrete rhamnolipids and lipopeptides that are used in a wide range of industrial applications. Recently, these compounds have been studied in a context of plant-microbe interactions. This mini-review describes the direct antimicrobial activities of these compounds against plant pathogens. We also provide the current knowledge on how rhamnolipids and lipopeptides stimulate the plant immune system leading to plant resistance to phytopathogens. Given their low toxicity, high biodegradability and ecological acceptance, we discuss the possible role of these biosurfactants as alternative strategies to reduce or even replace pesticide use in agriculture.
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Affiliation(s)
- Jérôme Crouzet
- Unité RIBP EA 4707, SFR Condorcet FR CNRS 3417, University of Reims Champagne-Ardenne, Reims, France
| | - Anthony Arguelles-Arias
- MiPI laboratory, Gembloux Agro-Bio Tech, SFR Condorcet FR CNRS 3417, University of LieÌge, Gembloux, Belgium
| | - Sandrine Dhondt-Cordelier
- Unité RIBP EA 4707, SFR Condorcet FR CNRS 3417, University of Reims Champagne-Ardenne, Reims, France
| | - Sylvain Cordelier
- Unité RIBP EA 4707, SFR Condorcet FR CNRS 3417, University of Reims Champagne-Ardenne, Reims, France
| | - Jelena Pršić
- MiPI laboratory, Gembloux Agro-Bio Tech, SFR Condorcet FR CNRS 3417, University of LieÌge, Gembloux, Belgium
| | - Gregory Hoff
- MiPI laboratory, Gembloux Agro-Bio Tech, SFR Condorcet FR CNRS 3417, University of LieÌge, Gembloux, Belgium
| | | | - Fabienne Baillieul
- Unité RIBP EA 4707, SFR Condorcet FR CNRS 3417, University of Reims Champagne-Ardenne, Reims, France
| | - Christophe Clément
- Unité RIBP EA 4707, SFR Condorcet FR CNRS 3417, University of Reims Champagne-Ardenne, Reims, France
| | - Marc Ongena
- MiPI laboratory, Gembloux Agro-Bio Tech, SFR Condorcet FR CNRS 3417, University of LieÌge, Gembloux, Belgium
| | - Stéphan Dorey
- Unité RIBP EA 4707, SFR Condorcet FR CNRS 3417, University of Reims Champagne-Ardenne, Reims, France
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20
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Recent progress and trends in the analysis and identification of rhamnolipids. Appl Microbiol Biotechnol 2020; 104:8171-8186. [PMID: 32845366 DOI: 10.1007/s00253-020-10841-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/06/2020] [Accepted: 08/14/2020] [Indexed: 10/23/2022]
Abstract
Rhamnolipids have extensive potential applications and are the most promising biosurfactants for commercialization. The efficient and accurate identification and analysis of these are important to their production, application and commercialization. Accordingly, significant efforts have been made to identify and analyse rhamnolipids during screening of producing strains, fermentation and application processes. Cationic cetyltrimethylammonium bromide-methylene blue (CTAB-MB) test combines a series of indirect assays to efficiently assist in the primary screening of rhamnolipids-producing strains, while the secretion of rhamnolipids by these strains can be identified through TLC, FTIR, NMR, electrospray ionization mass spectrometry (ESI-MS) and HPLC-MS analysis. Rhamnolipids can be quantified by colorimetric methods requiring the use of concentrated acid, and this approach has the advantages of reliability, simplicity, low-cost and excellent reproducibility with very low technological requirements. HPLC-MS can also be employed as required as a more accurate quantification method. In addition, HPLC-ELSD has been established as the internationally acceptable measure of rhamnolipids for commercial purposes. The preparation of well-accepted rhamnolipids standards and modifications of analysis operations are essential to further enhance the accuracy and improve the simplicity of rhamnolipid analysis.Key points• Current status of R&D works on determination of rhamnolipids is listed• Advantages and disadvantages of various types analysis are summarized• Limitations of current rhamnolipid quantification are discussed Graphical abstract.
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21
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Monnier N, Cordier M, Dahi A, Santoni V, Guénin S, Clément C, Sarazin C, Penaud A, Dorey S, Cordelier S, Rippa S. Semipurified Rhamnolipid Mixes Protect Brassica napus Against Leptosphaeria maculans Early Infections. PHYTOPATHOLOGY 2020; 110:834-842. [PMID: 31880985 DOI: 10.1094/phyto-07-19-0275-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
The rapeseed crop (Brassica napus) has to cope with fungal diseases that significantly impacts yields. In particular, the fungal pathogen Leptosphaeria maculans, the causal agent of blackleg disease (also named Phoma stem canker), is a worldwide issue to this crop. Considering environmental concerns, it is essential to propose alternative natural compounds for rapeseed crop protection to reduce chemical fungicide use. Here we report data showing the efficacy of semipurified rhamnolipid (RL) mixes from bacterial origin to protect rapeseed against L. maculans at early stages of infection in controlled conditions. In addition, we show that RL solutions have excellent adhesion properties when sprayed onto rapeseed leaves, without adding any adjuvant. We demonstrate that RL mixes display direct antimycelial properties against the pathogen and stimulate plant defense responses in rapeseed. Our results validate, a preventive action of low RL concentrations to protect rapeseed against L. maculans and a curative effect in specific conditions when applied after the inoculation of the pathogen spores. Semipurified RL mixes therefore appear to be real cost-effective compounds that could be used in fields as biocontrol products to fight L. maculans early infections of rapeseed.
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Affiliation(s)
- Noadya Monnier
- Unité de Génie Enzymatique et Cellulaire, UMR CNRS 7025, Sorbonne Universités, Université de Technologie de Compiègne, SFR Condorcet FR CNRS 3417, Compiègne, France
| | - Marion Cordier
- Unité Résistance Induite et Bioprotection des Plantes, EA 4707, Université de Reims Champagne Ardenne, SFR Condorcet FR CNRS 3417, Reims, France
| | - Abdellatif Dahi
- Unité de Génie Enzymatique et Cellulaire, UMR CNRS 7025, Sorbonne Universités, Université de Technologie de Compiègne, SFR Condorcet FR CNRS 3417, Compiègne, France
| | - Valérie Santoni
- Unité de Génie Enzymatique et Cellulaire, UMR CNRS 7025, Sorbonne Universités, Université de Technologie de Compiègne, SFR Condorcet FR CNRS 3417, Compiègne, France
| | - Stéphanie Guénin
- Centre de Ressources Régional en Biologie Moléculaire, Université de Picardie Jules Verne, SFR Condorcet FR CNRS 3417, Amiens, France
| | - Christophe Clément
- Unité Résistance Induite et Bioprotection des Plantes, EA 4707, Université de Reims Champagne Ardenne, SFR Condorcet FR CNRS 3417, Reims, France
| | - Catherine Sarazin
- Unité de Génie Enzymatique et Cellulaire, UMR CNRS 7025, Université de Picardie Jules Verne, SFR Condorcet FR CNRS 3417, Amiens, France
| | - Annette Penaud
- Terres Inovia, Département de Génétique et Protection des Cultures-Phytopathologie, Thivernal-Grignon, France
| | - Stephan Dorey
- Unité Résistance Induite et Bioprotection des Plantes, EA 4707, Université de Reims Champagne Ardenne, SFR Condorcet FR CNRS 3417, Reims, France
| | - Sylvain Cordelier
- Unité Résistance Induite et Bioprotection des Plantes, EA 4707, Université de Reims Champagne Ardenne, SFR Condorcet FR CNRS 3417, Reims, France
| | - Sonia Rippa
- Unité de Génie Enzymatique et Cellulaire, UMR CNRS 7025, Sorbonne Universités, Université de Technologie de Compiègne, SFR Condorcet FR CNRS 3417, Compiègne, France
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Rahimi K, Lotfabad TB, Jabeen F, Mohammad Ganji S. Cytotoxic effects of mono- and di-rhamnolipids from Pseudomonas aeruginosa MR01 on MCF-7 human breast cancer cells. Colloids Surf B Biointerfaces 2019; 181:943-952. [PMID: 31382344 DOI: 10.1016/j.colsurfb.2019.06.058] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 05/11/2019] [Accepted: 06/01/2019] [Indexed: 12/21/2022]
Abstract
Rhamnolipids produced by P. aeruginosa MR01 were fractionated into mono- and di-rhamnolipids, and their dominant congeners, Rha-C10-C10 and Rha-Rha-C10-C10, were shown by mass spectrometry. Minimum surface tensions and critical micelle concentrations (CMC) were determined as "≃34 mN/m; ≃26.17 mg/l;" and "≃29 mN/m; ≃29.63 mg/l" for mono- and di-rhamnolipids, respectively. Spectrophotometry measurements provided a close approximation of CMC. Contact angle and diameter of wet area were determined for rhamnolipid-containing drops on hydrophobic paper to display their capability for alteration of surface wettability. Wet area measurement is a simple, reliable method not requiring a Drop Shape Analyzer. Cell viabilities determined by MTT assay showed a decline in a dose-dependent manner and estimated IC50 values were 25.87 μg/ml and 31.00 μg/ml for mono- and di-rhamnolipids treating MCF-7 cells for 48 h. Morphological observations using the inverted phase-contrast microscopy and fluorescence microscopy via Hoechst staining revealed the apoptotic characteristics in treated MCF-7 cells. The semi-quantitative RT-PCR method demonstrated that expression of the p53 gene in mRNA levels significantly (P < 0.05) increased when treated with 30 μg/ml of each rhamnolipid compound for 12 h. It can be concluded that rhamnolipids derived from MR01 show significant anticancer potential against MCF-7 cell line and should be further investigated as natural, therapeutic anti-tumor agents.
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Affiliation(s)
- Kobra Rahimi
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Tayebe Bagheri Lotfabad
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran.
| | - Farhat Jabeen
- Department of Zoology, Government College, University of Faisalabad, Pakistan
| | - Shahla Mohammad Ganji
- Department of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
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Interactions between Aspergillus fumigatus and Pulmonary Bacteria: Current State of the Field, New Data, and Future Perspective. J Fungi (Basel) 2019; 5:jof5020048. [PMID: 31212791 PMCID: PMC6617096 DOI: 10.3390/jof5020048] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/10/2019] [Accepted: 06/10/2019] [Indexed: 12/14/2022] Open
Abstract
Aspergillus fumigatus and Pseudomonas aeruginosa are central fungal and bacterial members of the pulmonary microbiota. The interactions between A. fumigatus and P. aeruginosa have only just begun to be explored. A balance between inhibitory and stimulatory effects on fungal growth was observed in mixed A. fumigatus-P. aeruginosa cultures. Negative interactions have been seen for homoserine-lactones, pyoverdine and pyochelin resulting from iron starvation and intracellular inhibitory reactive oxidant production. In contrast, several types of positive interactions were recognized. Dirhamnolipids resulted in the production of a thick fungal cell wall, allowing the fungus to resist stress. Phenazines and pyochelin favor iron uptake for the fungus. A. fumigatus is able to use bacterial volatiles to promote its growth. The immune response is also differentially regulated by co-infections.
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Naughton PJ, Marchant R, Naughton V, Banat IM. Microbial biosurfactants: current trends and applications in agricultural and biomedical industries. J Appl Microbiol 2019; 127:12-28. [PMID: 30828919 DOI: 10.1111/jam.14243] [Citation(s) in RCA: 142] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 02/18/2019] [Accepted: 02/24/2019] [Indexed: 12/12/2022]
Abstract
Synthetic surfactants are becoming increasingly unpopular in many applications due to previously disregarded effects on biological systems and this has led to a new focus on replacing such products with biosurfactants that are biodegradable and produced from renewal resources. Microbially derived biosurfactants have been investigated in numerous studies in areas including: increasing feed digestibility in an agricultural context, improving seed protection and fertility, plant pathogen control, antimicrobial activity, antibiofilm activity, wound healing and dermatological care, improved oral cavity care, drug delivery systems and anticancer treatments. The development of the potential of biosurfactants has been hindered somewhat by the myriad of approaches taken in their investigations, the focus on pathogens as source species and the costs associated with large-scale production. Here, we focus on various microbial sources of biosurfactants and the current trends in terms of agricultural and biomedical applications.
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Affiliation(s)
- P J Naughton
- The Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, County Londonderry, UK
| | - R Marchant
- The Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, County Londonderry, UK
| | - V Naughton
- The Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, County Londonderry, UK
| | - I M Banat
- The Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, County Londonderry, UK
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25
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de Freitas Ferreira J, Vieira EA, Nitschke M. The antibacterial activity of rhamnolipid biosurfactant is pH dependent. Food Res Int 2019; 116:737-744. [DOI: 10.1016/j.foodres.2018.09.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 08/21/2018] [Accepted: 09/05/2018] [Indexed: 10/28/2022]
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26
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Methods in Metagenomics and Environmental Biotechnology. NANOSCIENCE AND BIOTECHNOLOGY FOR ENVIRONMENTAL APPLICATIONS 2019. [DOI: 10.1007/978-3-319-97922-9_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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27
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Green Synthesis of Zinc Oxide Nanoparticles by Pseudomonas aeruginosa and their Broad-Spectrum Antimicrobial Effects. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2018. [DOI: 10.22207/jpam.12.4.50] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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28
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On the road towards tailor-made rhamnolipids: current state and perspectives. Appl Microbiol Biotechnol 2018; 102:8175-8185. [DOI: 10.1007/s00253-018-9240-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 07/11/2018] [Accepted: 07/11/2018] [Indexed: 12/20/2022]
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29
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Sodagari M, Invally K, Ju LK. Maximize rhamnolipid production with low foaming and high yield. Enzyme Microb Technol 2017; 110:79-86. [PMID: 29310859 DOI: 10.1016/j.enzmictec.2017.10.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/23/2017] [Accepted: 10/12/2017] [Indexed: 11/30/2022]
Abstract
Rhamnolipids are well-known microbial surfactants with many potential applications. Their production cost, however, remains high due to the severe foaming tendency in aerobic fermentation and the relatively low productivity and yield. In this study, we assessed the boundaries set by these constraints after optimization of basic parameters such as dissolved oxygen concentration (DO), pH and carbon sources. DO 10% and pH 5.5-5.7 were found optimal; cell growth and/or rhamnolipid production were slower at lower DO (5%) or pH (5.0) while foaming became hard to control at higher DO (30%) or pH (6.0 and 6.5). Although the Pseudomonas aeruginosa strain used was selected for its high rhamnolipid production from glycerol as substrate, soybean oil was still found to be a better substrate that increased specific rhamnolipid productivity to 25.8mg/g cells-h from the glycerol-supported maximum of 8.9mg/g cells-h. In addition, the foam volume was approximately halved by using soybean oil instead of glycerol as substrate. Analysis by liquid chromatography coupled with mass spectrometry revealed that rhamnolipid compositions from the two carbon sources were also very different, with primarily (82%) monorhamnolipids from soybean oil and more (64%) dirhamnolipids from glycerol. The optimized fermentation produced 42g/l rhamnolipids at a yield of approximately 47% and a volumetric productivity of 220mg/l-h. These values are among the highest reported.
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Affiliation(s)
- Maysam Sodagari
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325-3906, United States.
| | - Krutika Invally
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325-3906, United States
| | - Lu-Kwang Ju
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325-3906, United States.
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30
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Sodium chloride effect on the aggregation behaviour of rhamnolipids and their antifungal activity. Sci Rep 2017; 7:12907. [PMID: 29018256 PMCID: PMC5635025 DOI: 10.1038/s41598-017-13424-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 09/21/2017] [Indexed: 11/17/2022] Open
Abstract
In this work, the antifungal activity of rhamnolipids produced by Pseudomonas aeruginosa #112 was evaluated against Aspergillus niger MUM 92.13 and Aspergillus carbonarius MUM 05.18. It was demonstrated that the di-rhamnolipid congeners were responsible for the antifungal activity exhibited by the crude rhamnolipid mixture, whereas mono-rhamnolipids showed a weak inhibitory activity. Furthermore, in the presence of NaCl (from 375 mM to 875 mM), the antifungal activity of the crude rhamnolipid mixture and the purified di-rhamnolipids was considerably increased. Dynamic Light Scattering studies showed that the size of the structures formed by the rhamnolipids increased as the NaCl concentration increased, being this effect more pronounced in the case of di-rhamnolipids. These results were confirmed by Confocal Scanning Laser Microscopy, which revealed the formation of giant vesicle-like structures (in the µm range) by self-assembling of the crude rhamnolipid mixture in the presence of 875 mM NaCl. In the case of the purified mono- and di-rhamnolipids, spherical structures (also in the µm range) were observed at the same conditions. The results herein obtained demonstrated a direct relationship between the rhamnolipids antifungal activity and their aggregation behaviour, opening the possibility to improve their biological activities for application in different fields.
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31
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Chong H, Li Q. Microbial production of rhamnolipids: opportunities, challenges and strategies. Microb Cell Fact 2017; 16:137. [PMID: 28779757 PMCID: PMC5544971 DOI: 10.1186/s12934-017-0753-2] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 07/28/2017] [Indexed: 11/15/2022] Open
Abstract
Rhamnolipids are a class of biosurfactants which contain rhamnose as the sugar moiety linked to β-hydroxylated fatty acid chains. Rhamnolipids can be widely applied in many industries including petroleum, food, agriculture and bioremediation etc. Pseudomonas aeruginosa is still the most competent producer of rhamnolipids, but its pathogenicity may cause safety and health concerns during large-scale production and applications. Therefore, extensive studies have been carried out to explore safe and economical methods to produce rhamnolipids. Various metabolic engineering efforts have also been applied to either P. aeruginosa for improving its rhamnolipid production and diminishing its pathogenicity, or to other non-pathogenic strains by introducing the key genes for safe production of rhamnolipids. The three key enzymes for rhamnolipid biosynthesis, RhlA, RhlB and RhlC, are found almost exclusively in Pseudomonas sp. and Burkholderia sp., but have been successfully expressed in several non-pathogenic host bacteria to produce rhamnolipids in large scales. The composition of mono- and di-rhamnolipids can also be modified through altering the expression levels of RhlB and RhlC. In addition, cell-free rhamnolipid synthesis by using the key enzymes and precursors from non-pathogenic sources is thought to not only eliminate pathogenic effects and simplify the downstream purification processes, but also to circumvent the complexity of quorum sensing system that regulates rhamnolipid biosynthesis. The pathogenicity of P. aeruginosa can also be reduced or eliminated through in vivo or in vitro enzymatic degradation of the toxins such as pyocyanin during rhamnolipid production. The rhamnolipid production cost can also be significantly reduced if rhamnolipid purification step can be bypassed, such as utilizing the fermentation broth or the rhamnolipid-producing strains directly in the industrial applications of rhamnolipids.
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Affiliation(s)
- Huiqing Chong
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research, 1 Pesek Road, Jurong Island, 627833 Singapore
| | - Qingxin Li
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research, 1 Pesek Road, Jurong Island, 627833 Singapore
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32
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Dirhamnolipids secreted from Pseudomonas aeruginosa modify anjpegungal susceptibility of Aspergillus fumigatus by inhibiting β1,3 glucan synthase activity. ISME JOURNAL 2017; 11:1578-1591. [PMID: 28338676 PMCID: PMC5584477 DOI: 10.1038/ismej.2017.32] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 01/05/2017] [Accepted: 01/22/2017] [Indexed: 12/16/2022]
Abstract
Pseudomonas aeruginosa and Aspergillus fumigatus are the two microorganisms responsible for most of the chronic infections in cystic fibrosis patients. P. aeruginosa is known to produce quorum-sensing controlled rhamnolipids during chronic infections. Here we show that the dirhamnolipids secreted from P. aeruginosa (i) induce A. fumigatus to produce an extracellular matrix, rich in galactosaminogalactan, 1,8-dihydroxynaphthalene (DHN)- and pyo-melanin, surrounding their hyphae, which facilitates P. aeruginosa binding and (ii) inhibit A. fumigatus growth by blocking β1,3 glucan synthase (GS) activity, thus altering the cell wall architecture. A. fumigatus in the presence of diRhls resulted in a growth phenotype similar to that upon its treatment with anjpegungal echinocandins, showing multibranched hyphae and thicker cell wall rich in chitin. The diRhl structure containing two rhamnose moieties attached to fatty acyl chain is essential for the interaction with β1,3 GS; however, the site of action of diRhls on GS is different from that of echinocandins, and showed synergistic anjpegungal effect with azoles.
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33
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Long X, Shen C, He N, Zhang G, Meng Q. Enhanced rhamnolipids production via efficient foam-control using stop valve as a foam breaker. BIORESOURCE TECHNOLOGY 2017; 224:536-543. [PMID: 27839682 DOI: 10.1016/j.biortech.2016.10.072] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 10/21/2016] [Accepted: 10/22/2016] [Indexed: 06/06/2023]
Abstract
In this study, a stop valve was used as a foam breaker for dealing with the massive overflowing foam in rhamnolipid fermentation. As found, a stop valve at its tiny opening could break over 90% of the extremely stable rhamnolipid foam into enriched liquid when foam flows through the sharp gap in valve. The efficient foam-control by the stop valve considerably improved the rhamnolipid fermentation and significantly enhanced the rhamnolipid productivity by 83% compared to the regular fermentation. This efficient foam breaking was mainly achieved by a high shear rate in combination with fast separation of air from the collapsed foam. Altogether, the stop valve possessed a great activity in breaking rhamnolipid foam, and the involving mechanism holds the potential for developing efficient foam breakers for industrial rhamnolipid fermentation.
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Affiliation(s)
- Xuwei Long
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China; School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, PR China
| | - Chong Shen
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China
| | - Ni He
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, PR China
| | - Guoliang Zhang
- Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou, PR China
| | - Qin Meng
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China.
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34
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Paulino BN, Pessôa MG, Mano MCR, Molina G, Neri-Numa IA, Pastore GM. Current status in biotechnological production and applications of glycolipid biosurfactants. Appl Microbiol Biotechnol 2016; 100:10265-10293. [PMID: 27844141 DOI: 10.1007/s00253-016-7980-z] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 10/20/2016] [Accepted: 11/01/2016] [Indexed: 01/20/2023]
Abstract
Biosurfactants are natural compounds with surface activity and emulsifying properties produced by several types of microorganisms and have been considered an interesting alternative to synthetic surfactants. Glycolipids are promising biosurfactants, due to low toxicity, biodegradability, and chemical stability in different conditions and also because they have many biological activities, allowing wide applications in different fields. In this review, we addressed general information about families of glycolipids, rhamnolipids, sophorolipids, mannosylerythritol lipids, and trehalose lipids, describing their chemical and surface characteristics, recent studies using alternative substrates, and new strategies to improve of production, beyond their specificities. We focus in providing recent developments and trends in biotechnological process and medical and industrial applications.
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Affiliation(s)
- Bruno Nicolau Paulino
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil.
| | - Marina Gabriel Pessôa
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil
| | - Mario Cezar Rodrigues Mano
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil
| | - Gustavo Molina
- Institute of Science and Technology, Food Engineering, UFVJM, Diamantina, Minas Gerais, Brazil
| | - Iramaia Angélica Neri-Numa
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil
| | - Glaucia Maria Pastore
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil
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35
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Mnif I, Ghribi D. Glycolipid biosurfactants: main properties and potential applications in agriculture and food industry. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:4310-4320. [PMID: 27098847 DOI: 10.1002/jsfa.7759] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 02/26/2016] [Accepted: 04/12/2016] [Indexed: 06/05/2023]
Abstract
Glycolipids, consisting of a carbohydrate moiety linked to fatty acids, are microbial surface active compounds produced by various microorganisms. They are characterized by high structural diversity and have the ability to decrease the surface and interfacial tension at the surface and interface, respectively. Rhamnolipids, trehalolipids, mannosylerythritol lipids and cellobiose lipids are among the most popular glycolipids. They have received much practical attention as biopesticides for controlling plant diseases and protecting stored products. As a result of their antifungal activity towards phytopathogenic fungi and larvicidal and mosquitocidal potencies, glycolipid biosurfactants permit the preservation of plants and plant crops from pest invasion. Also, as a result of their emulsifying and antibacterial activities, glycolipids have great potential as food additives and food preservatives. Furthermore, the valorization of food byproducts via the production of glycolipid biosurfactant has received much attention because it permits the bioconversion of byproducts on valuable compounds and decreases the cost of production. Generally, the use of glycolipids in many fields requires their retention from fermentation media. Accordingly, different strategies have been developed to extract and purify glycolipids. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Inès Mnif
- Unit Enzymes and Bioconversion, National School of Engineers, University of Sfax, Sfax, Tunisia
| | - Dhouha Ghribi
- Unit Enzymes and Bioconversion, National School of Engineers, University of Sfax, Sfax, Tunisia
- Higher Institute of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
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Abstract
In this paper, rhamnolipids are investigated, for the first time, for their feasibility for inhibiting dimorphic fungi. Rhamnolipids were found to effectively inhibit a dimorphic fungus isolated from tomato plants which was identified as Mucor circinelloides according to characterizations by morphologies as well as 28S rDNA sequences. Rhamnolipids markedly reduced growth of this fungus in both the yeast-like form and the filamentous form. Such an inhibitive effect was similarly obtained with Verticillium dahliae, a representative member of dimorphic fungi, confirming the effectiveness of rhamnolipids in the two growth forms of dimorphic fungi. Interestingly, rhamnolipids showed a greater inhibitive function in the case of the pathogenic growth mode of dimorphic fungi, such as the mycelium growth for M. circinelloides and the yeast-like growth for V. dahliae, than their non-pathogenic modes. The use of rhamnolipids might greatly reduce the frequently-reported drugresistance to the common anti-fungal agents by deterring the possible switch between the two modes of dimorphic fungi. Overall, rhamnolipids as environment-friendly biocontrol agents have a potential use in protecting plants from dimorphic fungi infections, and could also offer guidance toward future research into controlling dimorphic disease infection in humans.
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Affiliation(s)
- Ruyi Sha
- School of Biological and Chemical Engineering/School of Light Industry, Zhejiang University of Science and Technology
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Borah SN, Goswami D, Sarma HK, Cameotra SS, Deka S. Rhamnolipid Biosurfactant against Fusarium verticillioides to Control Stalk and Ear Rot Disease of Maize. Front Microbiol 2016; 7:1505. [PMID: 27708638 PMCID: PMC5030215 DOI: 10.3389/fmicb.2016.01505] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 09/08/2016] [Indexed: 12/04/2022] Open
Abstract
Antifungal activity of rhamnolipids (RLs) has been widely studied against many plant pathogenic fungi, but not against Fusarium verticillioides, a major pathogen of maize (Zea mays L.). F. verticillioides causes stalk and ear rot of maize or asymptomatically colonizes the plant and ears resulting in moderate to heavy crop loss throughout the world. F. verticillioides produces fumonisin mycotoxins, reported carcinogens, which makes the contaminated ears unsuitable for consumption. In this study, the RL produced using glucose as sole carbon source was characterized by FTIR and LCMS analyses and its antifungal activity against F. verticillioides was evaluated in vitro on maize stalks and seeds. Further, the effect of RL on the mycelia of F. verticillioides was investigated by scanning electron microscopy which revealed visible damage to the mycelial structure as compared to control samples. In planta, treatment of maize seeds with a RL concentration of 50 mg l-1 resulted in improved biomass and fruiting compared to those of healthy control plants and complete suppression of characteristic disease symptoms and colonization of maize by F. verticillioides. The study highlights the potential of RLs to be used for an effective biocontrol strategy against colonization of maize plant by F. verticillioides.
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Affiliation(s)
- Siddhartha N. Borah
- Environmental Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Debahuti Goswami
- Environmental Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Study in Science and TechnologyGuwahati, India
| | - Hridip K. Sarma
- Department of Biotechnology, Gauhati UniversityGuwahati, India
| | | | - Suresh Deka
- Environmental Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Study in Science and TechnologyGuwahati, India
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Liu H, Shao B, Long X, Yao Y, Meng Q. Foliar penetration enhanced by biosurfactant rhamnolipid. Colloids Surf B Biointerfaces 2016; 145:548-554. [PMID: 27281240 DOI: 10.1016/j.colsurfb.2016.05.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Revised: 04/26/2016] [Accepted: 05/19/2016] [Indexed: 11/25/2022]
Abstract
With recent environmental and health concerns, biosurfactants have obtained increasing interest in replacing conventional surfactants for diverse applications. In agriculture, the use of surfactant in stimulating foliar uptake is mainly for wetting leaf surface, resisting deposition/evaporation, enhancing penetration across cuticular membrane (CM) and translocation. This paper aimed to address the improved foliar uptake by rhamnolipid (RL) in comparison with the currently used alkyl polyglucoside (APG). As found, compared with APG at 900mg/L (1×critical micellar concentration, CMC), RL at a much lower concentration of 50mg/L (1×CMC) showed much better wettability and surface activity, indicative of its high effectiveness as surfactants. Its performance on resistance to deposition and evaporation was at least as same as APG. Moreover, RL could significantly improve the penetration of herbicide glyphosate and other two small water-soluble molecules (phenol red and Fe(2+)) across CM at an equivalent efficiency as APG at 1×CMC. Finally, the greatly enhanced herbicidal actitivity of glyphosate on greenhouse plants confirmed that RL and APG could both enhance the foliar uptake including translocation. Overall, RL should be more applicable than APG in agriculture due to its more promising properties on health/environmental friendliness.
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Affiliation(s)
- Haojing Liu
- Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China
| | - Bing Shao
- Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China
| | - Xuwei Long
- Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China
| | - Yang Yao
- Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China
| | - Qin Meng
- Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China.
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Yan F, Hu H, Lu L, Zheng X. Rhamnolipids induce oxidative stress responses in cherry tomato fruit to Alternaria alternata. PEST MANAGEMENT SCIENCE 2016; 72:1500-7. [PMID: 26506951 DOI: 10.1002/ps.4177] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 10/24/2015] [Accepted: 10/24/2015] [Indexed: 05/21/2023]
Abstract
BACKGROUND Rhamnolipids showed an antimicrobial activity applicable to a variety of pathogenic microorganisms, but mechanisms were mostly focused on their direct inhibitory effect. RESULTS This study showed that disease incidence obviously decreased when cherry tomatoes were treated with rhamnolipids, whether before or after Alternaria alternata inoculation. The activities of antioxidant enzymes, including superoxide dismutase and catalase, were increased in rhamnolipid-pretreated cherry tomato inoculated with A. alternata within 12 h, while contents of reactive oxygen species decreased. Moreover, resistant response of cherry tomato treated with rhamnolipids and A. alternata was also attributed to activity stimulation of ascorbate peroxidase and glutathione reductase, accompanied with an increase in reduced glutathione, which is beneficial for scavenging excessive H2 O2 . CONCLUSION Results indicated that rhamnolipids could effectively reduce fungal disease of harvested cherry tomato by inducing fruit resistance and mechanisms involved in elicitation of antioxidative reactions such as the ability to scavenge excess reactive oxygen species. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Fujie Yan
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, China
- Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou, China
- Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
| | - Hao Hu
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, China
- Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou, China
- Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
| | - Laifeng Lu
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, China
- Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou, China
- Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
| | - Xiaodong Zheng
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, China
- Zhejiang Key Laboratory for Agro-food Processing, Zhejiang University, Hangzhou, China
- Fuli Institute of Food Science, Zhejiang University, Hangzhou, China
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Johann S, Seiler TB, Tiso T, Bluhm K, Blank LM, Hollert H. Mechanism-specific and whole-organism ecotoxicity of mono-rhamnolipids. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 548-549:155-163. [PMID: 26802344 DOI: 10.1016/j.scitotenv.2016.01.066] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/12/2016] [Accepted: 01/12/2016] [Indexed: 05/21/2023]
Abstract
Biosurfactants like rhamnolipids are promising alternatives to chemical surfactants in a range of applications. A wider use requires an analysis of their environmental fate and their ecotoxicological potential. In the present study mono-rhamnolipids produced by a recombinant Pseudomonas putida strain were analyzed using the Green Toxicology concept for acute and mechanism-specific toxicity in an ecotoxicological test battery. Acute toxicity tests with the invertebrate Daphnia magna and with zebrafish embryos (Danio rerio) were performed. In addition, microbial and fungicidal effectiveness was investigated. Mutagenicity of the sample was tested by means of the Ames fluctuation assay. A selected mono-rhamnolipid was used for model simulations regarding mutagenicity and estrogenic activity. Our results indicate that mono-rhamnolipids cause acute toxicity to daphnids and zebrafish embryos comparable to or even lower than chemical surfactants. Rhamnolipids showed very low toxicity to the germination of Aspergillus niger spores and the growth of Candida albicans. No frameshift mutation or base substitutions were observed using the Ames fluctuation assay with the two tester strains TA98 and TA100. This result was confirmed by model simulations. Likewise it was computed that rhamnolipids have no estrogenic potential. In conclusion, mono-rhamnolipids are an environmental friendly alternative to chemical surfactants as the ecotoxicological potential is low.
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Affiliation(s)
- Sarah Johann
- Department of Ecosystem Analysis, Inst. for Environmental Research (Biology V), Worringerweg 1, 52074 Aachen, Germany.
| | - Thomas-Benjamin Seiler
- Department of Ecosystem Analysis, Inst. for Environmental Research (Biology V), Worringerweg 1, 52074 Aachen, Germany
| | - Till Tiso
- Aachen Biology and Biotechnology - ABBt. Institute of Applied Microbiology iAMB, Worringerweg 1, 52074 Aachen, Germany
| | - Kerstin Bluhm
- Department of Ecosystem Analysis, Inst. for Environmental Research (Biology V), Worringerweg 1, 52074 Aachen, Germany
| | - Lars M Blank
- Aachen Biology and Biotechnology - ABBt. Institute of Applied Microbiology iAMB, Worringerweg 1, 52074 Aachen, Germany
| | - Henner Hollert
- Department of Ecosystem Analysis, Inst. for Environmental Research (Biology V), Worringerweg 1, 52074 Aachen, Germany.
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Deepika K, Ramu Sridhar P, Bramhachari P. Characterization and antifungal properties of rhamnolipids produced by mangrove sediment bacterium Pseudomonas aeruginosa strain KVD-HM52. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.09.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Inès M, Dhouha G. Glycolipid biosurfactants: Potential related biomedical and biotechnological applications. Carbohydr Res 2015; 416:59-69. [PMID: 26359535 DOI: 10.1016/j.carres.2015.07.016] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 07/25/2015] [Accepted: 07/27/2015] [Indexed: 02/02/2023]
Abstract
Glycolipids, consisting of a carbohydrate moiety linked to fatty acids, are microbial surface active compounds produced by various microorganisms. They are characterized by highly structural diversity and have the ability to decrease the surface and interfacial tension at the surface and interface respectively. Rhamnolipids, trehalolipids, mannosylerythritol-lipids and cellobiose lipids are among the most popular glycolipids. Moreover, their ability to form pores and destabilize biological membrane permits their use in biomedicine as antibacterial, antifungal and hemolytic agents. Their antiviral and antitumor effects enable their use in pharmaceutic as therapeutic agents. Also, glycolipids can inhibit the bioadhesion of pathogenic bacteria enabling their use as anti-adhesive agents and for disruption of biofilm formation and can be used in cosmetic industry. Moreover, they have great potential application in industry as detergents, wetting agents and for flotation. Furthermore, glycolipids can act at the surface and can modulate enzyme activity permitting the enhancement or the inhibition of the activity of certain enzymes.
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Affiliation(s)
- Mnif Inès
- Higher Institute of Biotechnology, Tunisia; Unit Enzymes and Bioconversion, National School of Engineers, Tunisia.
| | - Ghribi Dhouha
- Higher Institute of Biotechnology, Tunisia; Unit Enzymes and Bioconversion, National School of Engineers, Tunisia
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Goswami D, Borah SN, Lahkar J, Handique PJ, Deka S. Antifungal properties of rhamnolipid produced by Pseudomonas aeruginosa DS9 against Colletotrichum falcatum. J Basic Microbiol 2015; 55:1265-74. [PMID: 26173581 DOI: 10.1002/jobm.201500220] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 06/23/2015] [Indexed: 11/12/2022]
Abstract
The rhamnolipid biosurfactant (RL-DS9) extracted from the bacterial strain Pseudomonas aeruginosa DS9 was evaluated for its antifungal activity against Colletotrichum falcatum that causes red rot in sugarcane. The surface tension (ST) reduction, biosurfactant production, and antifungal activity of biosurfactant against C. falcatum were investigated by using the medium with different carbon sources and it was found to be maximum in glucose. Moreover, highest reduction of ST and production of biosurfactant was achieved at 4.5% (w/v) concentration of glucose. The efficacy of RL-DS9 was compared with a commercially available rhamnolipid (RL-R95) using microtitre plate assay. Results showed that at 100 μg ml(-1) concentration RL-DS9 exhibited 86.6% inhibition against C. falcatum spore germination, and in the same concentration RL-R95 showed 83.3% inhibition. From liquid chromatography-mass spectrometry (LC-MS) analysis, it was revealed that only two similar congeners Rha-(C10 ) and Rha-Rha-(C10:1 ) were found to be in common among both the rhamnolipids. In the plant bioassay test, it was noted that red rot incidence was reduced on the sugarcane plants treated with RL-DS9. This is the first report that rhamnolipid biosurfactant produced by Pseudomonas aeruginosa DS9 could be able to control red rot disease of sugarcane caused due to the infection with the fungus Colletotrichum falcatum.
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Affiliation(s)
- Debahuti Goswami
- Environmental Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Guwahati, Assam, India
| | - Siddhartha Narayan Borah
- Environmental Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Guwahati, Assam, India
| | - Jiumoni Lahkar
- Environmental Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Guwahati, Assam, India
| | | | - Suresh Deka
- Environmental Biotechnology Laboratory, Life Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Guwahati, Assam, India
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Yan F, Xu S, Guo J, Chen Q, Meng Q, Zheng X. Biocontrol of post-harvest Alternaria alternata decay of cherry tomatoes with rhamnolipids and possible mechanisms of action. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:1469-74. [PMID: 25065672 DOI: 10.1002/jsfa.6845] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 07/21/2014] [Accepted: 07/23/2014] [Indexed: 05/21/2023]
Abstract
BACKGROUND Rhamnolipids were reported to have evident antifungal activity. The efficacy of rhamnolipids against Alternaria alternata and their possible mechanisms involved were investigated. RESULT The decay incidences of A. alternata of cherry tomatoes (Lycopersicon esculentum) treated by rhamnolipids were significantly reduced. The in vitro assays showed that rhamnolipids inhibited fungal growth on solid medium and prevented spore germination and mycelium growth in liquid medium. In addition, the combination of rhamnolipids and essential oil had a synergistic effect leading to the decrease of fungicidal concentrations of laurel oil. Scanning electron microscopy and transmission electron microscopy observations of the pathogen revealed significant morphological and cell structural alterations in the hyphae. Compared to the control, the content of nucleic acid in supernatant of the suspension of A. alternata increased, while the content of DNA and protein of mycelium decreased, which was in agreement with electrolyte leakage experiments. CONCLUSION Rhamnolipids could be an alternative to chemicals for controlling post-harvest phytopathogenic fungi on fruits and vegetables.
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Affiliation(s)
- Fujie Yan
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, 310058, People's Republic of China; Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, People's Republic of China; Zhejiang Key laboratory for agro-food processing, Zhejiang University, Hangzhou, 310058, People's Republic of China
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Miao S, Dashtbozorg SS, Callow NV, Ju LK. Rhamnolipids as platform molecules for production of potential anti-zoospore agrochemicals. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:3367-3376. [PMID: 25790115 DOI: 10.1021/acs.jafc.5b00033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Rhamnolipid biosurfactants have potential applications in the control of zoosporic plant pathogens. However, rhamnolipids have not been closely investigated for the anti-zoospore mechanism or for developing new anti-zoospore chemicals. In this study, RhL-1 and RhL-3 groups of rhamnolipids were used to generate the corresponding RhL-2 and RhL-4 groups and the free diacids. Conversion of RhL-3 to RhL-1 was also accomplished in vitro with cellobiase as the catalyst. The anti-zoospore effects of RhL-1-RhL-4 and the diacids were investigated with zoospores of Phytophthora sojae. For RhL-1-RhL-4, approximately 20, 30, 40, and 40 mg/L, respectively, were found to be the lowest concentrations required to stop movement of all zoospores, which indicates that the anti-zoospore effect remains strong even after RhL-1 and RhL-3 are hydrolyzed into RhL-2 and RhL-4. The free diacids required a significantly higher critical concentration of about 125 mg/L. Rhamnose can be obtained as a co-product.
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Affiliation(s)
- Shida Miao
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio 44325-3906, United States
| | - Soroosh Soltani Dashtbozorg
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio 44325-3906, United States
| | - Nicholas V Callow
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio 44325-3906, United States
| | - Lu-Kwang Ju
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio 44325-3906, United States
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Nalini S, Parthasarathi R. Production and characterization of rhamnolipids produced by Serratia rubidaea SNAU02 under solid-state fermentation and its application as biocontrol agent. BIORESOURCE TECHNOLOGY 2014; 173:231-238. [PMID: 25305653 DOI: 10.1016/j.biortech.2014.09.051] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 09/09/2014] [Accepted: 09/11/2014] [Indexed: 05/16/2023]
Abstract
The present study aimed at exploring mahua (Madhuca indica) oil cake as a novel substrate for the production of biosurfactant by Serratia rubidaea SNAU02 under solid-state fermentation (SSF). Response surface methodology showed followings as the optimal conditions for the production of biosurfactant: mahua oil cake 7.48 g, 2.5 ml inoculum size (1×10(8) cells/ml), and pH 7.22 and 31 °C temperature. The characterization of the biosurfactant by TLC, FT-IR and GC-MS revealed the presence of rhamnolipid. The presence of rhamnosyl transferase gene responsible for biosynthesis of rhamnolipid was identified. The strain SNAU02 exhibited antifungal activity and demonstrated no toxicity against the seeds of Brassica oleracea and Artemia salina employed as a bio-indicator. The present findings indicated the potential of mahua oil cake as suitable substrate for the production of rhamnolipids in SSF by S. rubidaea SNAU02 and application potential of the biosurfactant produced as biocontrol agent against plant pathogens.
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Affiliation(s)
- S Nalini
- Division of Microbiology, Faculty of Science, Annamalai University, Annamalai Nagar 608002, Tamil Nadu, India.
| | - R Parthasarathi
- Department of Microbiology, Faculty of Agriculture, Annamalai University, Annamalai Nagar 608002, Tamil Nadu, India
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Jiang L, Shen C, Long X, Zhang G, Meng Q. Rhamnolipids elicit the same cytotoxic sensitivity between cancer cell and normal cell by reducing surface tension of culture medium. Appl Microbiol Biotechnol 2014; 98:10187-96. [PMID: 25231070 DOI: 10.1007/s00253-014-6065-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 08/27/2014] [Accepted: 08/29/2014] [Indexed: 01/20/2023]
Abstract
Biosurfactant rhamnolipids have been claimed to show biological activities of inhibiting the proliferation of cancer cells. In this study, the cytotoxicity of rhamnolipids was examined on four cancer cells (HepG2, Caco-2, Hela, MCF-7 cells) and two normal cells (HK-2 cell, primary hepatocyte). Interestingly, both cancer cells and normal cells exhibited similar sensitivities to the addition of rhamnolipids in culture medium, and the cytotoxicity was largely attenuated by the presence of fetal bovine serum (FBS) in culture medium. In correlation of the mono-/di-rhamnolipid cytotoxicity with the surface tension of culture medium, it was found that rhamnolipids triggered cytotoxicity whenever the surface tension of culture medium decreased below 41 mN/m irrespective of the FBS content in culture medium, cell line, or rhamnolipid congener. Similarly, each chemical surfactant (Tween-80, sodium dodecyl sulfate, and sodium dodecyl benzene sulfonate) could cause cytotoxicity on HepG2 cells whenever its addition made the surface tension under 41 mN/m in culture medium with or without the presence of FBS. It seems that rhamnolipids, like chemical surfactants, exhibited cytotoxicity by reducing the surface tension of culture medium rather than by changing its specific molecular structure, which had no selection on tumor cells. This study could offer helps to correct the misleading biological activity of rhamnolipids and to avoid the possible large wastes of time and expenses on developing the applications in antitumor drugs.
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Affiliation(s)
- Lifang Jiang
- Department of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, Zhejiang, People's Republic of China
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Geys R, Soetaert W, Van Bogaert I. Biotechnological opportunities in biosurfactant production. Curr Opin Biotechnol 2014; 30:66-72. [PMID: 24995572 DOI: 10.1016/j.copbio.2014.06.002] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 05/27/2014] [Accepted: 06/05/2014] [Indexed: 11/30/2022]
Abstract
In the recent years, biosurfactants proved to be an interesting alternative to petrochemically derived surfactants. Two classes of biosurfactants, namely glycolipids and lipopeptides, have attracted significant commercial interest. Despite their environmental advantages and equal performance, commercialization of these molecules remains a challenge due to missing acquaintance of the applicants, higher price and lack of structural variation. The latter two issues can partially be tackled by screening for novel and better wild-type producers and optimizing the fermentation process. Yet, these traditional approaches cannot overcome all hurdles. In this review, an overview is given on how biotechnology offers opportunities for increased biosurfactant production and the creation of new types of molecules, in this way enhancing their commercial potential.
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Affiliation(s)
- Robin Geys
- Centre of Expertise for Industrial Biotechnology and Biocatalysis, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Gent, Belgium
| | - Wim Soetaert
- Centre of Expertise for Industrial Biotechnology and Biocatalysis, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Gent, Belgium
| | - Inge Van Bogaert
- Centre of Expertise for Industrial Biotechnology and Biocatalysis, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Gent, Belgium.
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