1
|
Schürch S, Gindro K, Schnee S, Dubuis PH, Codina JM, Wilhelm M, Riat A, Lamoth F, Sanglard D. Occurrence of Aspergillus fumigatus azole resistance in soils from Switzerland. Med Mycol 2023; 61:myad110. [PMID: 37930839 PMCID: PMC10653585 DOI: 10.1093/mmy/myad110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/17/2023] [Accepted: 10/31/2023] [Indexed: 11/08/2023] Open
Abstract
Aspergillus fumigatus is a fungal species causing diverse diseases in humans. The use of azoles for treatments of A. fumigatus diseases has resulted in azole resistance. Azoles are also widely used in the environment for crop protection, which resulted in azole resistance. Resistance is primarily due to mutations in cyp51A, which encodes the target protein for azoles. Here we addressed the occurrence of azole resistance in soils from a vast part of Switzerland. We aimed to associate the use of azoles in the environment with the occurrence of azole resistance. We targeted sample sites from different agricultural environments as well as sites with no agricultural practice (natural sites and urban sites). Starting from 327 sites, 113 A. fumigatus isolates were recovered (2019-2021), among which 19 were azole-resistant (15 with TR34/L98H and four with TR46/Y121F/T289A resistance mutations in cyp51A). Our results show that azole resistance was not associated with a specific agricultural practice. Azoles could be chemically detected in investigated soils, however, their presence was not associated with the occurrence of azole-resistant isolates. Interestingly, genetic markers of resistance to other fungicides were detected but only in azole-resistant isolates, thus reinforcing the notion that A. fumigatus cross-resistance to fungicides has an environmental origin. In conclusion, this study reveals the spreading of azole resistance in A. fumigatus from the environment in Switzerland. The proximity of agricultural areas to urban centers may facilitate the transmission of resistant strains to at-risk populations. Thus, vigilant surveillance is required to maintain effective treatment options for aspergillosis.
Collapse
Affiliation(s)
- Stéphanie Schürch
- Plant Protection Research Division, Mycology Group, Agroscope, 1260 Nyon, Switzerland
| | - Katia Gindro
- Plant Protection Research Division, Mycology Group, Agroscope, 1260 Nyon, Switzerland
| | - Sylvain Schnee
- Plant Protection Research Division, Mycology Group, Agroscope, 1260 Nyon, Switzerland
| | - Pierre-Henri Dubuis
- Plant Protection Research Division, Mycology Group, Agroscope, 1260 Nyon, Switzerland
| | - Josep Massana Codina
- Plant Protection Research Division, Mycology Group, Agroscope, 1260 Nyon, Switzerland
| | - Matthieu Wilhelm
- Plant Protection Research Division, Mycology Group, Agroscope, 1260 Nyon, Switzerland
| | - Arnaud Riat
- Service of Infectious Diseases and Service of Laboratory Medicine, Geneva University Hospitals and Geneva University, 1205 Geneva, Switzerland
| | - Frédéric Lamoth
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Dominique Sanglard
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| |
Collapse
|
2
|
Huber R, Marcourt L, Héritier M, Luscher A, Guebey L, Schnee S, Michellod E, Guerrier S, Wolfender JL, Scapozza L, Köhler T, Gindro K, Queiroz EF. Generation of potent antibacterial compounds through enzymatic and chemical modifications of the trans-δ-viniferin scaffold. Sci Rep 2023; 13:15986. [PMID: 37749179 PMCID: PMC10520035 DOI: 10.1038/s41598-023-43000-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 09/18/2023] [Indexed: 09/27/2023] Open
Abstract
Stilbene dimers are well-known for their diverse biological activities. In particular, previous studies have demonstrated the high antibacterial potential of a series of trans-δ-viniferin-related compounds against gram-positive bacteria such as Staphylococcus aureus. The trans-δ-viniferin scaffold has multiple chemical functions and can therefore be modified in various ways to generate derivatives. Here we report the synthesis of 40 derivatives obtained by light isomerization, O-methylation, halogenation and dimerization of other stilbene monomers. The antibacterial activities of all generated trans-δ-viniferin derivatives were evaluated against S. aureus and information on their structure-activity relationships (SAR) was obtained using a linear regression model. Our results show how several parameters, such as the O-methylation pattern and the presence of halogen atoms at specific positions, can determine the antibacterial activity. Taken together, these results can serve as a starting point for further SAR investigations.
Collapse
Affiliation(s)
- Robin Huber
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Margaux Héritier
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Alexandre Luscher
- Department of Microbiology and Molecular Medicine, University of Geneva, Rue Michel-Servet 1, 1211, Genève 4, Switzerland
| | - Laurie Guebey
- Department of Microbiology and Molecular Medicine, University of Geneva, Rue Michel-Servet 1, 1211, Genève 4, Switzerland
| | - Sylvain Schnee
- Agroscope, Plant Protection Research Division, Mycology Group, Route de Duillier 50, P.O. Box 1012, 1260, Nyon, Switzerland
| | - Emilie Michellod
- Agroscope, Plant Protection Research Division, Mycology Group, Route de Duillier 50, P.O. Box 1012, 1260, Nyon, Switzerland
| | - Stéphane Guerrier
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
- Geneva School of Economics and Management, University of Geneva, 1205, Geneva, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Leonardo Scapozza
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Thilo Köhler
- Department of Microbiology and Molecular Medicine, University of Geneva, Rue Michel-Servet 1, 1211, Genève 4, Switzerland
| | - Katia Gindro
- Agroscope, Plant Protection Research Division, Mycology Group, Route de Duillier 50, P.O. Box 1012, 1260, Nyon, Switzerland.
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland.
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland.
| |
Collapse
|
3
|
Jaccard A, Dubuis N, Kellenberger I, Brodard J, Schnee S, Gindro K, Schumpp O. New viruses of Cladosporium sp. expand considerably the taxonomic structure of Gammapartitivirus genus. J Gen Virol 2023; 104:001879. [PMID: 37549001 PMCID: PMC10539651 DOI: 10.1099/jgv.0.001879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 07/25/2023] [Indexed: 08/08/2023] Open
Abstract
Despite the fact that Cladosporium sp. are ubiquitous fungi, their viromes have been little studied. By analysing a collection of Cladosporium fungi, two new partitiviruses named Cladosporium cladosporioides partitivirus 1 (CcPV1) and Cladosporium cladosporioides partitivirus 2 (CcPV2) co-infecting a strain of Cladosporium cladosporioides were identified. Their complete genome consists of two monocistronic dsRNA segments (RNA1 and RNA2) with a high percentage of pairwise identity on 5' and 3' end. The RNA directed RNA polymerase (RdRp) of both viruses and the capsid protein (CP) of CcPV1 display the classic characteristics required for their assignment to the Gammapartitivirus genus. In contrast, CcPV2 RNA2 encodes for a 41 KDa CP that is unusually smaller when aligned to CPs of other viruses classified in this genus. The structural role of this protein is confirmed by electrophoresis on acrylamide gel of purified viral particles. Despite the low percentage of identity between the capsid proteins of CcPV1 and CcPV2, their three-dimensional structures predicted by AlphaFold2 show strong similarities and confirm functional proximity. Fifteen similar viral sequences of unknown function were annotated using the CcPV2 CP sequence. The phylogeny of the CP was highly consistent with the phylogeny of their corresponding RdRp, supporting the organization of Gammapartitiviruses into three distinct clades despite stretching the current demarcation criteria. It is proposed that a new subgenus be created within the genus Gammapartitivirus for this new group.
Collapse
Affiliation(s)
| | - Nathalie Dubuis
- Department of Plant Protection, Agroscope, Nyon, Switzerland
| | | | - Justine Brodard
- Department of Plant Protection, Agroscope, Nyon, Switzerland
| | - Sylvain Schnee
- Department of Plant Protection, Agroscope, Nyon, Switzerland
| | - Katia Gindro
- Department of Plant Protection, Agroscope, Nyon, Switzerland
| | - Olivier Schumpp
- Department of Plant Protection, Agroscope, Nyon, Switzerland
| |
Collapse
|
4
|
Zwygart ACA, Medaglia C, Huber R, Poli R, Marcourt L, Schnee S, Michellod E, Mazel-Sanchez B, Constant S, Huang S, Bekliz M, Clément S, Gindro K, Queiroz EF, Tapparel C. Antiviral properties of trans-δ-viniferin derivatives against enveloped viruses. Biomed Pharmacother 2023; 163:114825. [PMID: 37148860 PMCID: PMC10158552 DOI: 10.1016/j.biopha.2023.114825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/19/2023] [Accepted: 04/30/2023] [Indexed: 05/08/2023] Open
Abstract
Over the last century, the number of epidemics caused by RNA viruses has increased and the current SARS-CoV-2 pandemic has taught us about the compelling need for ready-to-use broad-spectrum antivirals. In this scenario, natural products stand out as a major historical source of drugs. We analyzed the antiviral effect of 4 stilbene dimers [1 (trans-δ-viniferin); 2 (11',13'-di-O-methyl-trans-δ-viniferin), 3 (11,13-di-O-methyl-trans-δ-viniferin); and 4 (11,13,11',13'-tetra-O-methyl-trans-δ-viniferin)] obtained from plant substrates using chemoenzymatic synthesis against a panel of enveloped viruses. We report that compounds 2 and 3 display a broad-spectrum antiviral activity, being able to effectively inhibit several strains of Influenza Viruses (IV), SARS-CoV-2 Delta and, to some extent, Herpes Simplex Virus 2 (HSV-2). Interestingly, the mechanism of action differs for each virus. We observed both a direct virucidal and a cell-mediated effect against IV, with a high barrier to antiviral resistance; a restricted cell-mediated mechanism of action against SARS-CoV-2 Delta and a direct virustatic activity against HSV-2. Of note, while the effect was lost against IV in tissue culture models of human airway epithelia, the antiviral activity was confirmed in this relevant model for SARS-CoV-2 Delta. Our results suggest that stilbene dimer derivatives are good candidate models for the treatment of enveloped virus infections.
Collapse
Affiliation(s)
- Arnaud Charles-Antoine Zwygart
- Department of Microbiology and Molecular Medicine, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland
| | - Chiara Medaglia
- Department of Microbiology and Molecular Medicine, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland
| | - Robin Huber
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), University of Geneva, CMU - Rue Michel Servet 1, CH-1211 Geneva 4, Switzerland
| | - Romain Poli
- Department of Microbiology and Molecular Medicine, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), University of Geneva, CMU - Rue Michel Servet 1, CH-1211 Geneva 4, Switzerland
| | - Sylvain Schnee
- Agroscope, Plant Protection Research Division, Mycology Group, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Emilie Michellod
- Agroscope, Plant Protection Research Division, Mycology Group, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Beryl Mazel-Sanchez
- Department of Microbiology and Molecular Medicine, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland
| | - Samuel Constant
- Epithelix Sarl, Chemin des Aulx 18, 1228 Plan-les-Ouates, Switzerland
| | - Song Huang
- Epithelix Sarl, Chemin des Aulx 18, 1228 Plan-les-Ouates, Switzerland
| | - Meriem Bekliz
- Department of Microbiology and Molecular Medicine, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland
| | - Sophie Clément
- Department of Microbiology and Molecular Medicine, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland
| | - Katia Gindro
- Agroscope, Plant Protection Research Division, Mycology Group, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), University of Geneva, CMU - Rue Michel Servet 1, CH-1211 Geneva 4, Switzerland
| | - Caroline Tapparel
- Department of Microbiology and Molecular Medicine, University of Geneva, CMU - Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland.
| |
Collapse
|
5
|
Huber R, Marcourt L, Quiros-Guerrero LM, Luscher A, Schnee S, Michellod E, Ducret V, Kohler T, Perron K, Wolfender JL, Gindro K, Ferreira Queiroz E. Chiral Separation of Stilbene Dimers Generated by Biotransformation for Absolute Configuration Determination and Antibacterial Evaluation. Front Chem 2022; 10:912396. [PMID: 35711965 PMCID: PMC9194554 DOI: 10.3389/fchem.2022.912396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/06/2022] [Indexed: 11/13/2022] Open
Abstract
A series of complex stilbene dimers have been generated through biotransformation of resveratrol, pterostilbene, and the mixture of both using the enzymatic secretome of Botrytis cinerea Pers. The process starts with achiral molecules and results in the generation of complex molecules with multiple chiral carbons. So far, we have been studying these compounds in the form of enantiomeric mixtures. In the present study, we isolated the enantiomers to determine their absolute configuration and assess if the stereochemistry could impact their biological properties. Eight compounds were selected for this study, corresponding to the main scaffolds generated (pallidol, leachianol, restrytisol and acyclic dimers) and the most active compounds (trans-δ-viniferin derivatives) against a methicillin-resistant strain of Staphylococcus aureus (MRSA). To isolate these enantiomers and determine their absolute configuration, a chiral HPLC-PDA analysis was performed. The analysis was achieved on a high-performance liquid chromatography system equipped with a chiral column. For each compound, the corresponding enantiomeric pair was obtained with high purity. The absolute configuration of each enantiomer was determined by comparison of experimental and calculated electronic circular dichroism (ECD). The antibacterial activities of the four trans-δ-viniferin derivatives against two S. aureus strains were evaluated.
Collapse
Affiliation(s)
- Robin Huber
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Luis-Manuel Quiros-Guerrero
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Alexandre Luscher
- Departement of Microbiology and Molecular Medicine, University of Geneva, Geneva, Switzerland
| | - Sylvain Schnee
- Mycology Group, Plant Protection Research Division, Agroscope, Nyon, Switzerland
| | - Emilie Michellod
- Mycology Group, Plant Protection Research Division, Agroscope, Nyon, Switzerland
| | - Verena Ducret
- Microbiological Analysis Platform, Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, Geneva, Switzerland
| | - Thilo Kohler
- Departement of Microbiology and Molecular Medicine, University of Geneva, Geneva, Switzerland
| | - Karl Perron
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Microbiological Analysis Platform, Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, Geneva, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Katia Gindro
- Mycology Group, Plant Protection Research Division, Agroscope, Nyon, Switzerland
- *Correspondence: Katia Gindro, ; Emerson Ferreira Queiroz,
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
- *Correspondence: Katia Gindro, ; Emerson Ferreira Queiroz,
| |
Collapse
|
6
|
Huber R, Koval A, Marcourt L, Héritier M, Schnee S, Michellod E, Scapozza L, Katanaev VL, Wolfender JL, Gindro K, Ferreira Queiroz E. Chemoenzymatic Synthesis of Original Stilbene Dimers Possessing Wnt Inhibition Activity in Triple-Negative Breast Cancer Cells Using the Enzymatic Secretome of Botrytis cinerea Pers. Front Chem 2022; 10:881298. [PMID: 35518712 PMCID: PMC9062038 DOI: 10.3389/fchem.2022.881298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/18/2022] [Indexed: 12/15/2022] Open
Abstract
The Wnt signaling pathway controls multiple events during embryonic development of multicellular animals and is carcinogenic when aberrantly activated in adults. Breast cancer and triple-negative breast cancer (TNBC) in particular depend upon Wnt pathway overactivation. Despite this importance, no Wnt pathway-targeting drugs are currently available, which necessitates novel approaches to search for therapeutically relevant compounds targeting this oncogenic pathway. Stilbene analogs represent an under-explored field of therapeutic natural products research. In the present work, a library of complex stilbene derivatives was obtained through biotransformation of a mixture of resveratrol and pterostilbene using the enzymatic secretome of Botrytis cinerea. To improve the chemodiversity, the reactions were performed using i-PrOH, n-BuOH, i-BuOH, EtOH, or MeOH as cosolvents. Using this strategy, a series of 73 unusual derivatives was generated distributed among 6 scaffolds; 55 derivatives represent novel compounds. The structure of each compound isolated was determined by nuclear magnetic resonance and high-resolution mass spectrometry. The inhibitory activity of the isolated compounds against the oncogenic Wnt pathway was comprehensively quantified and correlated with their capacity to inhibit the growth of the cancer cells, leading to insights into structure-activity relationships of the derivatives. Finally, we have dissected mechanistic details of the stilbene derivatives activity within the pathway.
Collapse
Affiliation(s)
- Robin Huber
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland.,Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Alexey Koval
- Department of Cell Physiology and Metabolism, Translational Research Centre in Oncohaematology, Faculty of Medicine, University of Geneva, CMU, Geneva, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland.,Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Margaux Héritier
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland.,Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Sylvain Schnee
- Mycology Group, Research Department Plant Protection, Agroscope, Nyon, Switzerland
| | - Emilie Michellod
- Mycology Group, Research Department Plant Protection, Agroscope, Nyon, Switzerland
| | - Leonardo Scapozza
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland.,Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Vladimir L Katanaev
- Department of Cell Physiology and Metabolism, Translational Research Centre in Oncohaematology, Faculty of Medicine, University of Geneva, CMU, Geneva, Switzerland.,Institute of Life Sciences and Biomedicine, Far Eastern Federal University, Vladivostok, Russia
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland.,Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| | - Katia Gindro
- Mycology Group, Research Department Plant Protection, Agroscope, Nyon, Switzerland
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, University of Geneva, CMU, Geneva, Switzerland.,Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Geneva, Switzerland
| |
Collapse
|
7
|
Huber R, Marcourt L, Koval A, Schnee S, Righi D, Michellod E, Katanaev VL, Wolfender JL, Gindro K, Queiroz EF. Chemoenzymatic Synthesis of Complex Phenylpropanoid Derivatives by the Botrytis cinerea Secretome and Evaluation of Their Wnt Inhibition Activity. Front Plant Sci 2022; 12:805610. [PMID: 35095976 PMCID: PMC8792767 DOI: 10.3389/fpls.2021.805610] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
In this study, a series of complex phenylpropanoid derivatives were obtained by chemoenzymatic biotransformation of ferulic acid, caffeic acid, and a mixture of both acids using the enzymatic secretome of Botrytis cinerea. These substrates were incubated with fungal enzymes, and the reactions were monitored using state-of-the-art analytical methods. Under such conditions, a series of dimers, trimers, and tetramers were generated. The reactions were optimized and scaled up. The resulting mixtures were purified by high-resolution semi-preparative HPLC combined with dry load introduction. This approach generated a series of 23 phenylpropanoid derivatives, 11 of which are described here for the first time. These compounds are divided into 12 dimers, 9 trimers (including a completely new structural scaffold), and 2 tetramers. Elucidation of their structures was performed with classical spectroscopic methods such as NMR and HRESIMS analyses. The resulting compound series were analyzed for anti-Wnt activity in TNBC cells, with several derivatives demonstrating specific inhibition.
Collapse
Affiliation(s)
- Robin Huber
- School of Pharmaceutical Sciences, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
| | - Alexey Koval
- Department of Cell Physiology and Metabolism, Translational Research Centre in Oncohaematology, Faculty of Medicine, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
| | - Sylvain Schnee
- Mycology Group, Research Department Plant Protection, Agroscope, Nyon, Switzerland
| | - Davide Righi
- School of Pharmaceutical Sciences, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
| | - Emilie Michellod
- Mycology Group, Research Department Plant Protection, Agroscope, Nyon, Switzerland
| | - Vladimir L. Katanaev
- Department of Cell Physiology and Metabolism, Translational Research Centre in Oncohaematology, Faculty of Medicine, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
- School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
| | - Katia Gindro
- Mycology Group, Research Department Plant Protection, Agroscope, Nyon, Switzerland
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, Centre Médical Universitaire (CMU), University of Geneva, Geneva, Switzerland
| |
Collapse
|
8
|
Schnee S, Huber R, Marcourt L, Michellod E, Wolfender JL, Gindro K, Ferreira Queiroz E. Generation of antifungal stilbenes derivatives towards grapevine downy mildew using enzymatic secretome of Botrytis cinerea. BIO Web Conf 2022. [DOI: 10.1051/bioconf/20225003007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
9
|
Dubey S, Guignard F, Pellaud S, Pedrazzetti M, van der Schuren A, Gaume A, Schnee S, Gindro K, Dubey O. Isothiocyanate Derivatives of Glucosinolates as Efficient Natural Fungicides. ACTA ACUST UNITED AC 2021. [DOI: 10.1094/phytofr-08-20-0010-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Fungal pathogens on crops account for losses that exceed US$200 billion annually. At present, chemical fungicides are widely used in the agricultural industry. Many of these products have a detrimental effect on human and animal health and are consequently forbidden postharvest, especially in Europe. Despite efforts to develop natural crop protection, very few have been commercialized. We explored the physicochemical characteristics of (i) glucosinolate derivatives from the present study and previously published papers in the light of their known biological roles and (ii) fungitoxic glucosinolate derivatives compared with natural and chemical fungicides. We found that 13 out of 31 tested natural and semisynthetic isothiocyanates are efficient fungicides against widespread species of plant pathogens alone and in a synergistic manner. Interestingly, physicochemical characteristics of fungitoxic glucosinolate derivatives differ from those showing no activities or known for their insecticidal or insect-attractive properties. The comparison of physicochemical characteristics of natural and semisynthetic fungitoxic glucosinolate derivatives with other fungicides (natural, semisynthetic, and synthetic) revealed that isothiocyanate glucosinolate derivatives clustered with nonglucosinolate derivatives plant fungicides as well as with some synthetic ones. Most of the fungicides show high bioaccumulation potential and lipophilic properties that most likely allow them to go through membranes. [Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license .
Collapse
Affiliation(s)
- Sylvain Dubey
- AgroSustain SA, CH-1260 Nyon, Switzerland
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
- Department of Ecology and Evolution, University of Lausanne, 1015 Lausanne, Switzerland
| | - Florian Guignard
- AgroSustain SA, CH-1260 Nyon, Switzerland
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
| | - Sébastien Pellaud
- AgroSustain SA, CH-1260 Nyon, Switzerland
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
| | - Matteo Pedrazzetti
- AgroSustain SA, CH-1260 Nyon, Switzerland
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
| | - Alja van der Schuren
- AgroSustain SA, CH-1260 Nyon, Switzerland
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
| | - Alain Gaume
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
| | - Sylvain Schnee
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
| | - Katia Gindro
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
| | - Olga Dubey
- AgroSustain SA, CH-1260 Nyon, Switzerland
- Agroscope, Swiss Federal Agricultural Research Station in Changins, CH-1260 Nyon, Switzerland
| |
Collapse
|
10
|
Righi D, Huber R, Koval A, Marcourt L, Schnee S, Le Floch A, Ducret V, Perozzo R, de Ruvo CC, Lecoultre N, Michellod E, Ebrahimi SN, Rivara-Minten E, Katanaev VL, Perron K, Wolfender JL, Gindro K, Queiroz EF. Generation of Stilbene Antimicrobials against Multiresistant Strains of Staphylococcus aureus through Biotransformation by the Enzymatic Secretome of Botrytis cinerea. J Nat Prod 2020; 83:2347-2356. [PMID: 32705864 DOI: 10.1021/acs.jnatprod.0c00071] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The biotransformation of a mixture of resveratrol and pterostilbene was performed by the protein secretome of Botrytis cinerea. Several reaction conditions were tested to overcome solubility issues and to improve enzymatic activity. Using MeOH as cosolvent, a series of unusual methoxylated compounds was generated. The reaction was scaled-up, and the resulting mixture purified by semipreparative HPLC-PDA-ELSD-MS. Using this approach, 15 analogues were isolated in one step. Upon full characterization by NMR and HRMS analyses, eight of the compounds were new. The antibacterial activities of the isolated compounds were evaluated in vitro against the opportunistic pathogens Pseudomonas aeruginosa and Staphylococcus aureus. The selectivity index was calculated based on cytotoxic assays performed against human liver carcinoma cells (HepG2) and the human breast epithelial cell line (MCF10A). Some compounds revealed remarkable antibacterial activity against multidrug-resistant strains of S. aureus with moderate human cell line cytotoxicity.
Collapse
Affiliation(s)
- Davide Righi
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Robin Huber
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Alexey Koval
- Department of Cell Physiology and Metabolism, Translational Research Centre in Oncohaematology, Faculty of Medicine, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Sylvain Schnee
- Plant Protection Research Division, Mycology Group, Agroscope, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Anaïs Le Floch
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Verena Ducret
- Microbiological Analysis Platform, Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Remo Perozzo
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Concetta C de Ruvo
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Nicole Lecoultre
- Plant Protection Research Division, Mycology Group, Agroscope, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Emilie Michellod
- Plant Protection Research Division, Mycology Group, Agroscope, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Samad N Ebrahimi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C., Evin, Tehran, Iran
| | - Elisabeth Rivara-Minten
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Vladimir L Katanaev
- Department of Cell Physiology and Metabolism, Translational Research Centre in Oncohaematology, Faculty of Medicine, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- School of Biomedicine, Far Eastern Federal University, Vladivostok 690090, Russia
| | - Karl Perron
- Microbiological Analysis Platform, Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Katia Gindro
- Plant Protection Research Division, Mycology Group, Agroscope, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Emerson F Queiroz
- School of Pharmaceutical Sciences, University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| |
Collapse
|
11
|
Massana-Codina J, Schnee S, Allard PM, Rutz A, Boccard J, Michellod E, Cléroux M, Schürch S, Gindro K, Wolfender JL. Insights on the Structural and Metabolic Resistance of Potato ( Solanum tuberosum) Cultivars to Tuber Black Dot ( Colletotrichum coccodes). Front Plant Sci 2020; 11:1287. [PMID: 32973846 PMCID: PMC7468465 DOI: 10.3389/fpls.2020.01287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 08/07/2020] [Indexed: 05/03/2023]
Abstract
Black dot is a blemish disease of potato tubers caused by the phytopathogenic fungus Colletotrichum coccodes. Qualitative resistance (monogenic) that leads to the hypersensitive response has not been reported against black dot, but commercial potato cultivars show different susceptibility levels to the disease, indicating that quantitative resistance (polygenic) mechanisms against this pathogen exist. Cytological studies are essential to decipher pathogen colonization of the plant tissue, and untargeted metabolomics has been shown effective in highlighting resistance-related metabolites in quantitative resistance. In this study, we used five commercial potato cultivars with different susceptibility levels to black dot, and studied the structural and biochemical aspects that correlate with resistance to black dot using cytological and untargeted metabolomics methods. The cytological approach using semithin sections of potato tuber periderm revealed that C. coccodes colonizes the tuber periderm, but does not penetrate in cortical cells. Furthermore, skin thickness did not correlate with disease susceptibility, indicating that other factors influence quantitative resistance to black dot. Furthermore, suberin amounts did not correlate with black dot severity, and suberin composition was similar between the five potato cultivars studied. On the other hand, the untargeted metabolomics approach allowed highlighting biomarkers of infection, as well as constitutive and induced resistance-related metabolites. Hydroxycinnamic acids, hydroxycinnamic acid amides and steroidal saponins were found to be biomarkers of resistance under control conditions, while hydroxycoumarins were found to be specifically induced in the resistant cultivars. Notably, some of these biomarkers showed antifungal activity in vitro against C. coccodes. Altogether, our results show that quantitative resistance of potatoes to black dot involves structural and biochemical mechanisms, including the production of specialized metabolites with antifungal properties.
Collapse
Affiliation(s)
- Josep Massana-Codina
- Plant Protection Research Division, Agroscope, Nyon, Switzerland
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Sylvain Schnee
- Plant Protection Research Division, Agroscope, Nyon, Switzerland
| | - Pierre-Marie Allard
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Adriano Rutz
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Julien Boccard
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Emilie Michellod
- Plant Protection Research Division, Agroscope, Nyon, Switzerland
| | - Marilyn Cléroux
- Changins College for Viticulture and Enology, University Western Switzerland, Nyon, Switzerland
| | | | - Katia Gindro
- Plant Protection Research Division, Agroscope, Nyon, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| |
Collapse
|
12
|
Dubey O, Dubey S, Schnee S, Glauser G, Nawrath C, Gindro K, Farmer EE. Plant surface metabolites as potent antifungal agents. Plant Physiol Biochem 2020; 150:39-48. [PMID: 32112998 DOI: 10.1016/j.plaphy.2020.02.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/15/2020] [Accepted: 02/18/2020] [Indexed: 05/24/2023]
Abstract
Triunsaturated fatty acids are substrates for the synthesis of the defense hormone jasmonate which plays roles in resistance to numerous fungal pathogens. However, relatively little is known about other potential roles of di-unsaturated and triunsaturated fatty acids in resistance to fungal pathogens - in particular those that can attack plants at the seedling stage. We examined the roles of polyunsaturated fatty acids (PUFAs) in Arabidopsis thaliana during attack by the necrotrophic pathogen, Botrytis cinerea. We found that PUFA-deficient Arabidopsis mutants (fad2-1, fad2-3 and fad3-2 fad7-2 fad8 [fad trip]) displayed an unexpectedly strong resistance to B. cinerea at the cotyledon stage. Preliminary analyses revealed no changes in the expression of defense genes, however cuticle permeability defects were detected in both fad2-1 and fad trip mutants. Analysis of B. cinerea development on the surface of cotyledons revealed arrested hyphal growth on fad2-3 and fad trip mutants and 28% reduction in fungal adhesion on fad2-3 cotyledons. Surface metabolite analysis from the cotyledons of PUFA mutants led to the identification of 7-methylsulfonylheptyl glucosinolate (7MSOHG), which over-accumulated on the plant surface. We linked the appearance of 7MSOHG to defects in cuticle composition and permeability of mutants and show that its appearance correlates with resistance to B. cinerea.
Collapse
Affiliation(s)
- Olga Dubey
- Agrosustain SA, c/o Agroscope, Route de Duillier 60, CH-1260, Nyon, Switzerland; Agroscope, Swiss Federal Agricultural Research Station in Changins, Route de Duillier 60, CH-1260, Nyon, Switzerland
| | - Sylvain Dubey
- Agrosustain SA, c/o Agroscope, Route de Duillier 60, CH-1260, Nyon, Switzerland; Agroscope, Swiss Federal Agricultural Research Station in Changins, Route de Duillier 60, CH-1260, Nyon, Switzerland; Department of Ecology and Evolution, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland.
| | - Sylvain Schnee
- Agroscope, Swiss Federal Agricultural Research Station in Changins, Route de Duillier 60, CH-1260, Nyon, Switzerland
| | - Gaëtan Glauser
- Neuchâtel Platform of Analytical Chemistry, University of Neuchâtel, Avenue de Bellevaux 51, 2000, Neuchâtel, Switzerland
| | - Christiane Nawrath
- Department of Plant Molecular Biology, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland
| | - Katia Gindro
- Agroscope, Swiss Federal Agricultural Research Station in Changins, Route de Duillier 60, CH-1260, Nyon, Switzerland
| | - Edward E Farmer
- Department of Plant Molecular Biology, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland
| |
Collapse
|
13
|
|
14
|
Calonnec A, Jolivet J, Vivin P, Schnee S. Pathogenicity Traits Correlate With the Susceptible Vitis vinifera Leaf Physiology Transition in the Biotroph Fungus Erysiphe necator: An Adaptation to Plant Ontogenic Resistance. Front Plant Sci 2018; 9:1808. [PMID: 30619392 PMCID: PMC6297386 DOI: 10.3389/fpls.2018.01808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 11/20/2018] [Indexed: 05/08/2023]
Abstract
How and when the pathogen cycle is disrupted during plant development is crucial for harnessing ontogenic resistance in sustainable agriculture. Ontogenic resistance against powdery mildew (Erysiphe necator) was quantified on Vitis vinifera. Shoots were sampled in the vineyard at several dates during seasonal growth and processed in the laboratory under controlled conditions. Experiments were conducted on two susceptible Vitis vinifera Cabernet Sauvignon and Merlot. The process of leaf ontogenic resistance was investigated by measuring three quantitative traits of pathogenicity: the infection efficiency, sporulation and mycelium growth. Morphological and physiological plant indicators were used to identify leaf changes that resulted in ontogenic resistance and to predict pathogen variations that were linked to pathogenicity traits. The process of ontogenic resistance was established early in correspondence with the physiological transition of the leaf from sink to source status and was characterized by its increase in sugar content. The three traits of pathogenicity that we measured were affected, and their variation was strongly correlated with leaf age. Using leaf age, we were able to accurately predict the susceptibility of the leaf: a leaf aged, on average, 13.3 days had a very high probability (0.8) of being susceptible, while this probability decreased to 0.5 one week later. Sporulation was more closely correlated with variations in sugar and the infection efficiency in leaf water. The results for both cultivars were consistent. Ontogenic resistance on grapevine leaves is thus interpreted to be a strong, immutable physiological process that E. necator is able to circumvent by restricting its development to sink tissue. Future research should explore how this native plant resistance can be incorporated into grape management strategies to better control powdery mildew (PM) epidemics with reduced amounts of fungicides.
Collapse
Affiliation(s)
- Agnes Calonnec
- UMR1065 SAVE Santé et Agroecologie du Vignoble, INRA, ISVV, Villenave d'Ornon, France
| | - Jerome Jolivet
- UMR1065 SAVE Santé et Agroecologie du Vignoble, INRA, ISVV, Villenave d'Ornon, France
| | - Philippe Vivin
- EGFV, Bordeaux Sciences Agro, INRA, University of Bordeaux, y, Villenave d'Ornon, France
| | - Sylvain Schnee
- UMR1065 SAVE Santé et Agroecologie du Vignoble, INRA, ISVV, Villenave d'Ornon, France
| |
Collapse
|
15
|
Gindro K, Schnee S, Righi Davide R, Marcourt Laurence M, Nejad Ebrahimi Samad Nejad E, Massana Codina Josep Massana C, Voinesco Francine V, Michellod Emilie M, Wolfender JL, Ferreira Queiroz E. Generation of novel bioactive “unnatural” natural products through biotransformation by the enzymatic secretome of Botrytis cinerea. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K Gindro
- Agroscope, Institute for Plant Production Sciences IPS, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland, Nyon, Switzerland
| | - S Schnee
- Agroscope, Institute for Plant Production Sciences IPS, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland, Nyon, Switzerland
| | - R Righi Davide
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, CMU, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland, Geneva, Switzerland
| | - M Marcourt Laurence
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, CMU, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland, Geneva, Switzerland
| | - E Nejad Ebrahimi Samad Nejad
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C, Evin, Tehran, Iran, Tehran, Iran
| | - C Massana Codina Josep Massana
- Agroscope, Institute for Plant Production Sciences IPS, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland, Nyon, Switzerland
| | - V Voinesco Francine
- Agroscope, Institute for Plant Production Sciences IPS, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland, Nyon, Switzerland
| | - M Michellod Emilie
- Agroscope, Institute for Plant Production Sciences IPS, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland, Nyon, Switzerland
| | - JL Wolfender
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, CMU, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland, Geneva, Switzerland
| | - E Ferreira Queiroz
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, CMU, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland, Geneva, Switzerland
| |
Collapse
|
16
|
Gindro K, Schnee S, Righi D, Marcourt L, Nejad Ebrahimi S, Codina JM, Voinesco F, Michellod E, Wolfender JL, Queiroz EF. Generation of Antifungal Stilbenes Using the Enzymatic Secretome of Botrytis cinerea. J Nat Prod 2017; 80:887-898. [PMID: 28332842 DOI: 10.1021/acs.jnatprod.6b00760] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The protein secretome of Botrytis cinerea was used to perform the biotransformation of resveratrol, pterostilbene, and a mixture of both. Metabolite profiling by UHPLC-HRMS revealed the presence of compounds with unusual molecular formula, suggesting the existence of new products. To isolate these products, the reactions were scaled-up, and 21 analogues were isolated and fully characterized by NMR and HRESIMS analyses. The reaction with pterostilbene afforded five new compounds, while the reaction with a mixture of pterostilbene and resveratrol afforded seven unusual stilbene dimers. The antifungal properties of these compounds were evaluated using in vitro bioassays against Plasmopara viticola. The cytological effects of the isolated antifungal compounds on the ultrastructure of P. viticola were also evaluated.
Collapse
Affiliation(s)
- Katia Gindro
- Agroscope, Domaine de Recherche Protection des Végétaux , Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Sylvain Schnee
- Agroscope, Domaine de Recherche Protection des Végétaux , Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Davide Righi
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne , CMU, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne , CMU, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland
| | - Samad Nejad Ebrahimi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, ShahidBeheshti University , G. C., Evin, Tehran, Iran
| | - Josep Massana Codina
- Agroscope, Domaine de Recherche Protection des Végétaux , Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Francine Voinesco
- Agroscope, Domaine de Recherche Protection des Végétaux , Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Emilie Michellod
- Agroscope, Domaine de Recherche Protection des Végétaux , Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne , CMU, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne , CMU, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland
| |
Collapse
|
17
|
Bertrand S, Bohni N, Schnee S, Schumpp O, Gindro K, Wolfender JL. Metabolite induction via microorganism co-culture: a potential way to enhance chemical diversity for drug discovery. Biotechnol Adv 2014; 32:1180-204. [PMID: 24651031 DOI: 10.1016/j.biotechadv.2014.03.001] [Citation(s) in RCA: 289] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/28/2014] [Accepted: 03/03/2014] [Indexed: 02/08/2023]
Abstract
Microorganisms have a long track record as important sources of novel bioactive natural products, particularly in the field of drug discovery. While microbes have been shown to biosynthesize a wide array of molecules, recent advances in genome sequencing have revealed that such organisms have the potential to yield even more structurally diverse secondary metabolites. Thus, many microbial gene clusters may be silent under standard laboratory growth conditions. In the last ten years, several methods have been developed to aid in the activation of these cryptic biosynthetic pathways. In addition to the techniques that demand prior knowledge of the genome sequences of the studied microorganisms, several genome sequence-independent tools have been developed. One of these approaches is microorganism co-culture, involving the cultivation of two or more microorganisms in the same confined environment. Microorganism co-culture is inspired by the natural microbe communities that are omnipresent in nature. Within these communities, microbes interact through signaling or defense molecules. Such compounds, produced dynamically, are of potential interest as new leads for drug discovery. Microorganism co-culture can be achieved in either solid or liquid media and has recently been used increasingly extensively to study natural interactions and discover new bioactive metabolites. Because of the complexity of microbial extracts, advanced analytical methods (e.g., mass spectrometry methods and metabolomics) are key for the successful detection and identification of co-culture-induced metabolites. This review focuses on co-culture studies that aim to increase the diversity of metabolites obtained from microbes. The various strategies are summarized with a special emphasis on the multiple methods of performing co-culture experiments. The analytical approaches for studying these interaction phenomena are discussed, and the chemical diversity and biological activity observed among the induced metabolites are described.
Collapse
Affiliation(s)
- Samuel Bertrand
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland; Groupe Mer, Molécules, Santé-EA 2160, Faculté des Sciences pharmaceutiques et biologiques, Université de Nantes, 9 rue Bias, BP 53508, F-44035 Nantes Cedex 01, France
| | - Nadine Bohni
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Sylvain Schnee
- Mycology and Biotechnology group, Institute for Plant Production Sciences IPS, Agroscope, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Olivier Schumpp
- Mycology and Biotechnology group, Institute for Plant Production Sciences IPS, Agroscope, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Katia Gindro
- Mycology and Biotechnology group, Institute for Plant Production Sciences IPS, Agroscope, Route de Duillier 50, P.O. Box 1012, 1260 Nyon, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland.
| |
Collapse
|
18
|
Schnee S, Queiroz EF, Voinesco F, Marcourt L, Dubuis PH, Wolfender JL, Gindro K. Vitis vinifera canes, a new source of antifungal compounds against Plasmopara viticola, Erysiphe necator, and Botrytis cinerea. J Agric Food Chem 2013; 61:5459-67. [PMID: 23730921 DOI: 10.1021/jf4010252] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Methanolic and ethanolic crude extracts of Vitis vinifera canes exhibited significant antifungal activity against the three major fungal pathogens affecting grapevines, Plasmopara viticola, Erysiphe necator and Botrytis cinerea. The active extracts were analyzed by LC-PDA-ESI-MS, and selected compounds were identified. Efficient targeted isolation using medium-pressure liquid chromatography afforded six pure constituents in one step. The structures of the isolated compounds were elucidated by NMR and HRMS. Six identified compounds (ampelopsin A, hopeaphenol, trans-resveratrol, ampelopsin H, ε-viniferin, and E-vitisin B) presented antifungal activities against P. viticola. ε-Viniferin also exhibited a low antifungal activity against B. cinerea. None of the identified compounds inhibited the germination of E. necator. The potential to develop a novel natural fungicide against the three major fungal pathogens affecting V. vinifera from viticulture waste material is discussed.
Collapse
Affiliation(s)
- Sylvain Schnee
- Swiss Federal Research Station Agroscope Changins Wädenswil ACW, Route de Duiller 50, PO Box 1012, 1260 Nyon, Switzerland
| | | | | | | | | | | | | |
Collapse
|
19
|
Gindro K, Berger V, Godard S, Voinesco F, Schnee S, Viret O, Alonso-Villaverde V. Protease inhibitors decrease the resistance of Vitaceae to Plasmopara viticola. Plant Physiol Biochem 2012; 60:74-80. [PMID: 22906813 DOI: 10.1016/j.plaphy.2012.07.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 07/24/2012] [Indexed: 05/09/2023]
Abstract
Plasmopara viticola must successfully infect susceptible grapevine cultivars to complete its biological cycle. In resistant grapevine varieties, P. viticola is blocked by the activation of defense mechanisms; these defense mechanisms produce hypersensitive reactions, which are related to programmed cell death. In animals, programmed cell death is dependent on caspase activities. In plants, different caspase-like proteases assume the same functions. To examine the roles of caspase-like proteases in P. viticola-grapevine interactions, three varieties of grapevine with different levels of P. viticola resistance were chosen. These grapevine varieties were treated with either PMSF, a serine protease inhibitor, or E-64, a cysteine protease inhibitor. The development of the pathogen was followed microscopically, and the plant defense reactions were estimated through stilbene quantification. Both protease inhibitor treatments increased the infection rate in the resistant and immune varieties, diminished the production of toxic stilbenes and changed the level of the plants' susceptibility to the pathogen. In particular, after either protease treatment, the cultivar that was originally immune became resistant (hyphae and haustoria were observed), the resistant cultivar reached the level of a susceptible cultivar (sporulation was observed) and the susceptible cultivar became more sensitive (P. viticola colonized the entirety of the leaf mesophyll).
Collapse
Affiliation(s)
- Katia Gindro
- Swiss Federal Research Station Agroscope Changins-Wädenswil, Route de Duillier, P.O. Box 1012, CH-1260 Nyon, Switzerland.
| | | | | | | | | | | | | |
Collapse
|
20
|
Abstract
OBJECTIVE A community mental health center sought a system for qualitative review of patients' records to improve the quality of documentation through the engagement of clinical staff in the review process. METHODS The center developed a quality improvement system in which treatment team clinicians use a scored 30-item protocol to measure the quality of record documentation by peers. Questions address whether the record documents the full range of the psychiatric treatment process, including assessment and diagnosis, treatment planning, and provision of clinical services. Other questions address specific contractual or regulatory requirements, such as whether procedure codes are correct, and evaluate the physician's record of medication management. Each treatment team at the mental health center's six clinics has a quality improvement work group, composed of the team psychiatrist and at least one other team clinician. Each month the work group meets to review two randomly selected medical records from another treatment team at the same clinic and arrive at a consensus score. An administrative oversight team meets regularly with clinician-reviewers to foster uniform scoring of the protocol throughout the center. RESULTS An analysis of the trend in protocol scores over a 21-month period suggests that the procedure improves the quality of the documentation in patients' records. CONCLUSIONS A team-based quality review process appears to have a positive impact on the quality of medical record documentation. Improved documentation may improve continuity of care and improve the accuracy of record information used for other quality measurement systems.
Collapse
Affiliation(s)
- J G Baker
- Mental Health-Mental Retardation Authority of Harris County in Houston, Texas, USA.
| | | | | |
Collapse
|