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Marchi L, Degola F, Baruffini E, Restivo FM. How to easily detect plant NADH-glutamate dehydrogenase (GDH) activity? A simple and reliable in planta procedure suitable for tissues, extracts and heterologous microbial systems. Plant Sci 2021; 304:110714. [PMID: 33568313 DOI: 10.1016/j.plantsci.2020.110714] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/06/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 06/12/2023]
Abstract
Plant NADH glutamate dehydrogenase (GDH) is an intriguing enzyme, since it is involved in different metabolic processes owing to its reversible (anabolic/catabolic) activity and due to the oligomeric nature of the enzyme, that gives rise to several isoforms. The complexity of GDH isoenzymes pattern and the variability of the spatial and temporal localization of the different isoforms have limited our comprehension of the physiological role of GDH in plants. Genetics, immunological, and biochemical approaches have been used until now in order to shed light on the regulatory mechanism that control GDH expression in different plant systems and environmental conditions. We describe here the validation of a simple in planta GDH activity staining procedure, providing evidence that it might be used, with different purposes, to determine GDH expression in plant organs, tissues, extracts and also heterologous systems.
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Affiliation(s)
- L Marchi
- Department of Medicine and Surgery, University of Parma, Italy.
| | - F Degola
- Department of Chemistry, Life Science and Environmental Sustainability, University of Parma, Italy.
| | - E Baruffini
- Department of Chemistry, Life Science and Environmental Sustainability, University of Parma, Italy.
| | - F M Restivo
- Department of Chemistry, Life Science and Environmental Sustainability, University of Parma, Italy.
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2
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Spadola G, Sanna V, Bartoli J, Carcelli M, Pelosi G, Bisceglie F, Restivo FM, Degola F, Rogolino D. Thiosemicarbazone nano-formulation for the control of Aspergillus flavus. Environ Sci Pollut Res Int 2020; 27:20125-20135. [PMID: 32239408 DOI: 10.1007/s11356-020-08532-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 12/04/2019] [Accepted: 03/20/2020] [Indexed: 05/27/2023]
Abstract
Nanoparticles are widely studied for applications in medical science. In recent years, they have been developed for agronomical purposes to target microbial pest such as bacteria, fungi, and viruses. Nanoparticles are also proposed to limit the use of pesticides, whose abuse is causing environmental impact and human health concerns. In this study, nanoparticles were obtained by using poly-(ε-caprolactone), a polyester chosen for its biocompatibility and biodegradability properties. Poly-(ε-caprolactone) nanoparticles were formulated by using poly(vinyl alcohol) or Pluronic® F127 as non-ionic surfactants, and then loaded with benzophenone or valerophenone thiosemicarbazone, two compounds that inhibit aflatoxin production by Aspergillus flavus. The different types of nanoparticles were compared in terms of size, polydispersity index, morphology, and drug loading capacity. Finally, their effects were investigated on growth, development, and aflatoxin production in the aflatoxigenic species Aspergillus flavus, a ubiquitous contaminant of maize, cereal crops, and derived commodities. Aflatoxin production was inhibited to various extents, but the best inhibitory effect was obtained with respect to sclerotia production that was most effectively suppressed by both benzophenone and valerophenone thiosemicarbazone-loaded nanoparticles. These data support the idea that it is possible to use such nanoparticles as an alternate to pesticides for the control of mycotoxigenic sclerotia-forming fungi.
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Affiliation(s)
- Giorgio Spadola
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Vanna Sanna
- Nanomater Srl Porto Conte Ricerche, Loc. Tramariglio, 07041, Alghero, SS, Italy
| | - Jennifer Bartoli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Mauro Carcelli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Giorgio Pelosi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Franco Bisceglie
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Francesco Maria Restivo
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Francesca Degola
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Dominga Rogolino
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy.
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3
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Bartoli J, Montalbano S, Spadola G, Rogolino D, Pelosi G, Bisceglie F, Restivo FM, Degola F, Serra O, Buschini A, Feretti D, Zani C, Carcelli M. Antiaflatoxigenic Thiosemicarbazones as Crop-Protective Agents: A Cytotoxic and Genotoxic Study. J Agric Food Chem 2019; 67:10947-10953. [PMID: 31498626 DOI: 10.1021/acs.jafc.9b01814] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Aflatoxins are secondary fungal metabolites that can contaminate feed and food. They are a cause of growing concern worldwide, because they are potent carcinogenic agents. Thiosemicarbazones are molecules that possess interesting antiaflatoxigenic properties, but in order to use them as crop-protective agents, their cytotoxic and genotoxic profiles must first be assessed. In this paper, a group of thiosemicarbazones and a copper complex are reported as compounds able to antagonize aflatoxin biosynthesis, fungal growth, and sclerotia biogenesis in Aspergillus flavus. The two most interesting thiosemicarbazones found were noncytotoxic on several cell lines (CRL1790, Hs27, HFL1, and U937), and therefore, they were submitted to additional analysis of mutagenicity and genotoxicity on bacteria, plants, and human cells. No mutagenic activity was observed in bacteria, whereas genotoxic activity was revealed by the Alkaline Comet Assay on U937 cells and by the test of chromosomal aberrations in Allium cepa.
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Affiliation(s)
- Jennifer Bartoli
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Serena Montalbano
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Giorgio Spadola
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Dominga Rogolino
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Giorgio Pelosi
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Franco Bisceglie
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Francesco Maria Restivo
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Francesca Degola
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Olga Serra
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Annamaria Buschini
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
| | - Donatella Feretti
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health , University of Brescia , Viale Europa 11 , 25123 Brescia , Italy
| | - Claudia Zani
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health , University of Brescia , Viale Europa 11 , 25123 Brescia , Italy
| | - Mauro Carcelli
- Department of Chemistry, Life Sciences and Environmental Sustainability and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB) , Università di Parma , Parco Area delle Scienze , 43124 Parma , Italy
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4
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Dallabona C, Pioli M, Spadola G, Orsoni N, Bisceglie F, Lodi T, Pelosi G, Restivo FM, Degola F. Sabotage at the Powerhouse? Unraveling the Molecular Target of 2-Isopropylbenzaldehyde Thiosemicarbazone, a Specific Inhibitor of Aflatoxin Biosynthesis and Sclerotia Development in Aspergillus flavus, Using Yeast as a Model System. Molecules 2019; 24:molecules24162971. [PMID: 31426298 PMCID: PMC6719062 DOI: 10.3390/molecules24162971] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/11/2019] [Accepted: 08/14/2019] [Indexed: 11/16/2022] Open
Abstract
Amongst the various approaches to contain aflatoxin contamination of feed and food commodities, the use of inhibitors of fungal growth and/or toxin biosynthesis is showing great promise for the implementation or the replacement of conventional pesticide-based strategies. Several inhibition mechanisms were found taking place at different levels in the biology of the aflatoxin-producing fungal species such as Aspergillus flavus: compounds that influence aflatoxin production may block the biosynthetic pathway through the direct control of genes belonging to the aflatoxin gene cluster, or interfere with one or more of the several steps involved in the aflatoxin metabolism upstream. Recent findings pointed to mitochondrial functionality as one of the potential targets of some aflatoxin inhibitors. Additionally, we have recently reported that the effect of a compound belonging to the class of thiosemicarbazones might be related to the energy generation/carbon flow and redox homeostasis control by the fungal cell. Here, we report our investigation about a putative molecular target of the 3-isopropylbenzaldehyde thiosemicarbazone (mHtcum), using the yeast Saccharomyces cerevisiae as model system, to demonstrate how the compound can actually interfere with the mitochondrial respiratory chain.
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Affiliation(s)
- Cristina Dallabona
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy
| | - Marianna Pioli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy
| | - Giorgio Spadola
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy
| | - Nicolò Orsoni
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy
| | - Franco Bisceglie
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy
| | - Tiziana Lodi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy
| | - Giorgio Pelosi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy
| | - Francesco Maria Restivo
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy
| | - Francesca Degola
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43123 Parma, Italy.
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5
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Rogolino D, Gatti A, Carcelli M, Pelosi G, Bisceglie F, Restivo FM, Degola F, Buschini A, Montalbano S, Feretti D, Zani C. Thiosemicarbazone scaffold for the design of antifungal and antiaflatoxigenic agents: evaluation of ligands and related copper complexes. Sci Rep 2017; 7:11214. [PMID: 28894265 PMCID: PMC5593876 DOI: 10.1038/s41598-017-11716-w] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 08/29/2017] [Indexed: 11/09/2022] Open
Abstract
The issue of food contamination by aflatoxins presently constitutes a social emergency, since they represent a severe risk for human and animal health. On the other hand, the use of pesticides has to be contained, since this generates long term residues in food and in the environment. Here we present the synthesis of a series of chelating ligands based on the thiosemicarbazone scaffold, to be evaluated for their antifungal and antiaflatoxigenic effects. Starting from molecules of natural origin of known antifungal properties, we introduced the thio- group and then the corresponding copper complexes were synthesised. Some molecules highlighted aflatoxin inhibition in the range 67–92% at 100 μM. The most active compounds were evaluated for their cytotoxic effects on human cells. While all the copper complexes showed high cytotoxicity in the micromolar range, one of the ligand has no effect on cell proliferation. This hit was chosen for further analysis of mutagenicity and genotoxicity on bacteria, plants and human cells. Analysis of the data underlined the importance of the safety profile evaluation for hit compounds to be developed as crop-protective agents and at the same time that the thiosemicarbazone scaffold represents a good starting point for the development of aflatoxigenic inhibitors.
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Affiliation(s)
- Dominga Rogolino
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy.
| | - Anna Gatti
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy
| | - Mauro Carcelli
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy
| | - Giorgio Pelosi
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy
| | - Franco Bisceglie
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy
| | - Francesco Maria Restivo
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy
| | - Francesca Degola
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy
| | - Annamaria Buschini
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy
| | - Serena Montalbano
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Università di Parma, Parco Area delle Scienze, 43124, Parma, Italy
| | - Donatella Feretti
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia, Viale Europa 11, 25123, Brescia, Italy
| | - Claudia Zani
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia, Viale Europa 11, 25123, Brescia, Italy
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6
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Zani C, Bisceglie F, Restivo FM, Feretti D, Pioli M, Degola F, Montalbano S, Galati S, Pelosi G, Viola GVC, Carcelli M, Rogolino D, Ceretti E, Buschini A. A battery of assays as an integrated approach to evaluate fungal and mycotoxin inhibition properties and cytotoxic/genotoxic side-effects for the prioritization in the screening of thiosemicarbazone derivatives. Food Chem Toxicol 2017; 105:498-505. [PMID: 28483535 DOI: 10.1016/j.fct.2017.05.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 11/14/2016] [Revised: 05/02/2017] [Accepted: 05/04/2017] [Indexed: 11/25/2022]
Abstract
Aflatoxins represent a serious problem for a food economy based on cereal cultivations used to fodder animal and for human nutrition. The aims of our work are two-fold: first, to perform an evaluation of the activity of newly synthesized thiosemicarbazone compounds as antifungal and anti-mycotoxin agents and, second, to conduct studies on the toxic and genotoxic hazard potentials with a battery of tests with different endpoints. In this paper we report an initial study on two molecules: S-4-isopropenylcyclohexen-1-carbaldehydethiosemicarbazone and its metal complex, bis(S-4-isopropenylcyclohexen-1-carbaldehydethiosemicarbazonato)nickel (II). The outcome of the assays on fungi growth and aflatoxin production inhibition show that both molecules possess good antifungal activities, without inducing mutagenic effects on bacteria. From the assays to ascertain that the compounds have no adverse effects on human cells, we have found that they are cytotoxic and, in the case of the nickel compound, they also present genotoxic effects.
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Affiliation(s)
- Claudia Zani
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia, Italy.
| | - Franco Bisceglie
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy; Parma Unit, CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Italy
| | - Francesco Maria Restivo
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy; Parma Unit, CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Italy
| | - Donatella Feretti
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia, Italy
| | - Marianna Pioli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy
| | - Francesca Degola
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy
| | - Serena Montalbano
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy
| | - Serena Galati
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy
| | - Giorgio Pelosi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy; Parma Unit, CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Italy
| | - Gaia V C Viola
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia, Italy
| | - Mauro Carcelli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy; Parma Unit, CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Italy
| | - Dominga Rogolino
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy; Parma Unit, CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Italy
| | - Elisabetta Ceretti
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia, Italy
| | - Annamaria Buschini
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Italy; Parma Unit, CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Italy
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7
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Zani C, Restivo FM, Carcelli M, Feretti D, Pelosi G, Rogolino D, Degola F, Galati S, Bisceglie F, Buschini A. A Biotechnological Approach for the Development of New Antifungal Compounds to Protect the Environment and the Human Health. J Public Health Res 2015; 4:613. [PMID: 26753164 PMCID: PMC4693344 DOI: 10.4081/jphr.2015.613] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 08/05/2015] [Accepted: 11/04/2015] [Indexed: 11/24/2022] Open
Abstract
Background. In the Po Valley aflatoxins play a relevant role: the local food economy is heavily based on cereal cultivations for animal feed and human nutrition. Aims of this project are the identification of new compounds that inhibit Aspergillus proliferation, the development of new inhibitors of aflatoxins production, and the set-up a practical screening procedure to identify the most effective and safe compounds. Design and Methods. New compounds will be synthetized with natural origin molecules as ligands and endogenous metal ions to increase their bioavailability for the fungi as metal complexes. A biotechnological high-throughput screening will be set up to identify efficiently the most powerful substances. The newly synthesized compounds with effective antifungal activities, will be evaluated with battery of tests with different end-points to assess the toxic potential risk for environmental and human health. Expected impact of the study for public health. The fundamental step in the project will be the synthesis of new compounds and the study of their capability to inhibit aflatoxin biosynthesis. A new, simple, inexpensive and high-throughput method to screen the anti-fungine and anti-mycotoxin activity of the new synthesised compounds will be applied. The evaluation of possible risks for humans due to toxic and genotoxic activities of the molecules will be made with a new approach using different types of cells (bacteria, plants and human cells). Significance for public health Aflatoxins contamination constitutes a health emergency because aflatoxins and mycotoxins, besides being toxic, are among the most carcinogenic substances known. Even if Aspergillus are dominant in tropical regions, recently are becoming a serious problem also in Europe and in Italy, especially in area as the Po Valley in which this problem play a particularly important role, because the local food economy is heavily based not only on cereal cultivations aimed at animal feed but also on the production of derivatives to human nutrition. The aims of this research are the development of new bioactive molecules, obtained by natural molecules and metal ions, that are able to reduce the risk of food contamination by aflatoxin, but are harmless for environmental and health and the evaluation of the newly synthesized compounds using a battery of tests with different end-points to assess the toxic potential risk for environmental and human health.
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Affiliation(s)
- Claudia Zani
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia
| | | | | | - Donatella Feretti
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia
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8
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Degola F, Morcia C, Bisceglie F, Mussi F, Tumino G, Ghizzoni R, Pelosi G, Terzi V, Buschini A, Restivo FM, Lodi T. In vitro evaluation of the activity of thiosemicarbazone derivatives against mycotoxigenic fungi affecting cereals. Int J Food Microbiol 2015; 200:104-11. [PMID: 25702884 DOI: 10.1016/j.ijfoodmicro.2015.02.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [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: 09/24/2014] [Revised: 01/26/2015] [Accepted: 02/05/2015] [Indexed: 12/20/2022]
Abstract
With a steadily increasing world population, a more efficient system of food production is of paramount importance. One of the major causes of food spoilage is the presence of fungal pathogens and the production and accumulation of mycotoxins. In the present work we report a study on the activity of a series of functionalized thiosemicarbazones (namely cuminaldehyde, trans-cinnamaldehyde, quinoline-2-carboxyaldehyde, 5-fluoroisatin thiosemicarbazone and 5-fluoroisatin N(4)-methylthiosemicarbazone), as antifungal and anti-mycotoxin agents, against the two major genera of cereal mycotoxigenic fungi, i.e. Fusarium and Aspergillus. These thiosemicarbazones display different patterns of efficacy on fungal growth and on mycotoxin accumulation depending on the fungal species. Some of the molecules display a greater effect on mycotoxin synthesis than on fungal growth.
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Affiliation(s)
| | - Caterina Morcia
- Consiglio per la Ricerca e la sperimentazione in Agricoltura, CRA-GPG, Genomics Research Centre, Fiorenzuola d'Arda, Italy
| | | | - Francesca Mussi
- Dipartimento di Bioscienze, Università di Parma, Parma, Italy
| | - Giorgio Tumino
- Consiglio per la Ricerca e la sperimentazione in Agricoltura, CRA-GPG, Genomics Research Centre, Fiorenzuola d'Arda, Italy
| | - Roberta Ghizzoni
- Consiglio per la Ricerca e la sperimentazione in Agricoltura, CRA-GPG, Genomics Research Centre, Fiorenzuola d'Arda, Italy
| | - Giorgio Pelosi
- Dipartimento di Chimica, Università di Parma, Parma, Italy
| | - Valeria Terzi
- Consiglio per la Ricerca e la sperimentazione in Agricoltura, CRA-GPG, Genomics Research Centre, Fiorenzuola d'Arda, Italy
| | | | | | - Tiziana Lodi
- Dipartimento di Bioscienze, Università di Parma, Parma, Italy
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9
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Marchi L, Polverini E, Degola F, Baruffini E, Restivo FM. Glutamate dehydrogenase isoenzyme 3 (GDH3) of Arabidopsis thaliana is less thermostable than GDH1 and GDH2 isoenzymes. Plant Physiol Biochem 2014; 83:225-231. [PMID: 25180813 DOI: 10.1016/j.plaphy.2014.08.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 06/20/2014] [Accepted: 08/05/2014] [Indexed: 06/03/2023]
Abstract
NAD(H)-glutamate dehydrogenase (GDH; EC 1.4.1.2) is an abundant and ubiquitous enzyme that may exist in different isoenzymic forms. Variation in the composition of the GDH isoenzyme pattern is observed during plant development and specific cell, tissue and organ localization of the different isoforms have been reported. However, the mechanisms involved in the regulation of the isoenzymatic pattern are still obscure. Regulation may be exerted at several levels, i.e. at the level of transcription and translation of the relevant genes, but also when the enzyme is assembled to originate the catalytically active form of the protein. In Arabidopsis thaliana, three genes (GDH1, GDH2 and GDH3) encode three different GDH subunits (β, α and γ) that randomly associate to form a complex array of homo- and hetero-hexamers. In order to asses if the different Arabidopsis GDH isoforms may display different structural properties we have investigated their thermal stability. In particular the stability of GDH1 and GDH3 isoenzymes was studied using site-directed mutagenesis in a heterologous yeast expression system. It was established that the carboxyl terminus of the GDH subunit is involved in the stabilization of the oligomeric structure of the enzyme.
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Affiliation(s)
- Laura Marchi
- Dipartimento di Bioscienze, Università di Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy
| | - Eugenia Polverini
- Dipartimento di Fisica e Scienze della Terra, Università di Parma, Parco Area delle Scienze 7/A, 43124 Parma, Italy
| | - Francesca Degola
- Dipartimento di Bioscienze, Università di Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy
| | - Enrico Baruffini
- Dipartimento di Bioscienze, Università di Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy
| | - Francesco Maria Restivo
- Dipartimento di Bioscienze, Università di Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy.
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Marchi L, Degola F, Polverini E, Tercé-Laforgue T, Dubois F, Hirel B, Restivo FM. Glutamate dehydrogenase isoenzyme 3 (GDH3) of Arabidopsis thaliana is regulated by a combined effect of nitrogen and cytokinin. Plant Physiol Biochem 2013; 73:368-74. [PMID: 24189523 DOI: 10.1016/j.plaphy.2013.10.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [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: 07/23/2013] [Accepted: 10/14/2013] [Indexed: 05/24/2023]
Abstract
In higher plants, NAD(H)-glutamate dehydrogenase (GDH; EC 1.4.1.2) is an abundant enzyme that exists in different isoenzymic forms. In Arabidopsis thaliana, three genes (Gdh1, Gdh2 and Gdh3) encode three different GDH subunits (β, α and γ) that randomly associate to form a complex array of homo- and heterohexamers. The modification of the GDH isoenzyme pattern and its regulation was studied during the development of A. thaliana in the gdh1, gdh2 single mutants and the gdh1-2 double mutant, with particular emphasis on GDH3. Investigations showed that the GDH3 isoenzyme could not be detected in closely related Arabidopsis species. The induction and regulation of GDH3 activity in the leaves and roots was investigated following nitrogen deprivation in the presence or absence of sucrose or kinetin. These experiments indicate that GDH3 is likely to play an important role during senescence and nutrient remobilization.
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Affiliation(s)
- Laura Marchi
- Dipartimento di Bioscienze, Università di Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy
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11
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Abstract
AIMS To develop a simple, high-throughput and inexpensive procedure to detect and quantify aflatoxins into the culture media of growing mycelia. METHODS AND RESULTS Fungal conidia (Aspergillus flavus) were inoculated into the wells of a microplate containing 200 μl of different formulations of coconut-derived liquid medium. Time-dependent production of aflatoxins in the culture media was evaluated by a procedure relying on the UV-induced fluorescence emission by the toxin, using a microplate reader. These data were validated by comparison with the outputs of a conventional HPLC-based procedure. Determinations of aflatoxin concentration, according to the fluorimetric procedure, were performed either by withdrawing samples from the plates or by direct 'in situ' readings, the latter method reinforcing the high-throughput feature of the procedure. Fluorescence enhancers (cyclodextrins) did not ameliorate the sensitivity of the procedure to low concentrations of the toxin into the medium. The efficacy of the procedure was also validated by testing the effect on toxin yield of adding an antioxidant agent (α-lipoic acid) to the medium. CONCLUSIONS We give evidence that our improved procedure is reliable and suitable to analyse aflatoxin accumulation time course in coconut-derived culture medium. SIGNIFICANCE AND IMPACT OF THE STUDY This study shows that our procedure may profitably be used to give insights into the mechanisms of regulation of mycotoxin production and, consequently, to implement different strategies for the containment of aflatoxin contamination of food and feed commodities.
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Affiliation(s)
- F Degola
- Department of Genetics Biology of Microorganisms Anthropology Evolution, University of Parma, Parma, Italy
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12
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Sanità di Toppi L, Pawlik-Skowrońska B, Vurro E, Vattuone Z, Kalinowska R, Restivo FM, Musetti R, Skowroński T. First and second line mechanisms of cadmium detoxification in the lichen photobiont Trebouxia impressa (Chlorophyta). Environ Pollut 2008; 151:280-6. [PMID: 17658203 DOI: 10.1016/j.envpol.2007.06.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2007] [Accepted: 06/10/2007] [Indexed: 05/16/2023]
Abstract
"First line" defence mechanisms, such as phytochelatin biosynthesis, and "second line" mechanisms, such as stress protein induction, were investigated in cadmium-exposed cells of Trebouxia impressa Ahmadjian, a green microalgal species that is a common photobiont of the lichen Physcia adscendens (Fr.) H. Olivier. When T. impressa cells were exposed to 0, 9 and 18 microM Cd for 6, 18 and 48 h, glutathione and phytochelatins efficiently protected the cells against Cd damage. By contrast, the highest Cd concentration (36 microM) at the longest exposure-time (48 h) caused marked drops in glutathione and phytochelatin content, several types of ultrastructural damage, and decreases in cell density and total chlorophyll concentration. In this case, induction of stress proteins was observed, but only long after the induction of phytochelatins. Thus, stress proteins could represent a "second line" mechanism to counteract Cd stress, activated when there is a decline in the "first line" mechanism of Cd detoxification given by phytochelatins.
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Affiliation(s)
- L Sanità di Toppi
- Dipartimento di Biologia Evolutiva e Funzionale, viale GP Usberti 11/A, Università di Parma, Parma, Italy.
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13
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Degola F, Berni E, Dall'Asta C, Spotti E, Marchelli R, Ferrero I, Restivo FM. A multiplex RT-PCR approach to detect aflatoxigenic strains of Aspergillus flavus. J Appl Microbiol 2007; 103:409-17. [PMID: 17650201 DOI: 10.1111/j.1365-2672.2006.03256.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS To develop a multiplex reverse transciption-polymerase chain reaction (RT-PCR) protocol to discriminate aflatoxin-producing from aflatoxin-nonproducing strains of Aspergillus flavus. METHODS AND RESULTS The protocol was first optimized on a set of strains obtained from laboratory collections and then validated on A. flavus strains isolated from corn grains collected in the fields of the Po Valley (Italy). Five genes of the aflatoxin gene cluster of A. flavus, two regulatory (aflR and aflS) and three structural (aflD, aflO and aflQ), were targeted with specific primers to highlight their expression in mycelia cultivated under inducing conditions for aflatoxins production. 48-h-old cultures expressed the complete set of the genes analysed here whereas 24-h-old ones did not. Genomic PCR (quadruplex PCR) was also performed in parallel using chromosomal DNA extracted from the same set of strains to correlate the integrity of the genes with their expression. CONCLUSIONS We show that a good correlation exists between gene expression of the aflatoxin genes, here analysed by multipex RT-PCR, and aflatoxin production, except for one strain that apparently transcribed all the relevant genes but did not produce aflatoxin in the medium. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first example of the application of a combination of multiplex PCR and RT-PCR approaches to screen a population of A. flavus for the presence of aflatoxigenic and nonaflatoxigenic strains. The proposed protocol will be helpful in evaluating the risk posed by A. flavus in natural environments and might also be a useful tool to monitor its presence during the processing steps of food and feed commodities.
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Affiliation(s)
- F Degola
- Department of Genetics, Biology of Microorganisms, Anthropology, Evolution, University of Parma, Parma, Italy
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14
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Poli P, de Mello MA, Buschini A, de Castro VLSS, Restivo FM, Rossi C, Zucchi TMAD. Evaluation of the genotoxicity induced by the fungicide fenarimol in mammalian and plant cells by use of the single-cell gel electrophoresis assay. Mutat Res 2003; 540:57-66. [PMID: 12972058 DOI: 10.1016/s1383-5718(03)00165-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Fenarimol, a systemic pyrimidine carbinol fungicide, is considered to be not genotoxic or weakly genotoxic, although the available toxicological data are controversial and incomplete. Our results obtained in vitro with leukocytes of two different rodent species (rat and mouse) show that fenarimol affects DNA, as detected by the single-cell gel electrophoresis (SCGE, Comet) assay. This fungicide is able to induce DNA damage in a dose-related manner, with significant effectiveness at 36 nM, but without significant interspecies differences. Simultaneous exposure of rat leukocytes to fenarimol (36-290 nM) and a model genotoxic compound (50 microg/ml bleomycin) produced a supra-additive cytotoxic and genotoxic effect. This supports previous findings suggesting possible co-toxic, co-mutagenic, cancer-promoting and co-carcinogenic potential of fenarimol, and modification of the effects of other xenobiotics found to be influenced by this agrotoxic chemical, with consequent different toxicological events. The potential for DNA strand breaks to act as a biomarker of genetic toxicity in plants in vivo was also considered, in view of the fact that higher plants represent reliable sensors in an ecosystem. Significant DNA breakage was observed in the nuclei of Impatiens balsamina leaves after in vivo treatment with fenarimol (145 nM, 1h). More than 50% of the cells showed such DNA damage.
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Affiliation(s)
- P Poli
- Dipartimento di Genetica Antropologia Evoluzione, Università degli Studi di Parma, Parco Area delle Scienze11/a, 43100 Parma, Italy.
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Restivo FM, Laccone MC, Buschini A, Rossi C, Poli P. Indoor and outdoor genotoxic load detected by the Comet assay in leaves of Nicotiana tabacum cultivars Bel B and Bel W3. Mutagenesis 2002; 17:127-34. [PMID: 11880541 DOI: 10.1093/mutage/17.2.127] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Environmental pollution assessment and control are priority issues for both developed and developing countries of the world. The use of plant material for a more complete picture of environmental health appears to be particularly appealing. Here we validate a previous plant-adapted Comet assay on leaf tissues of Nicotiana tabacum cultivars Bel B and Bel W3. The effects of H(2)O(2) on DNA damage in Bel B and Bel W3 agree with the hypothesis that some component of the machinery that protects DNA integrity from oxidative stress may be impaired in cv. Bel W3. Exposure in the field on sunny summer days (peak ozone concentration >80 p.p.b.) showed significantly higher DNA damage in cv. Bel W3 if plants were collected and subjected to the Comet assay when the air ozone concentration was reaching its peak value, but not when plants were sampled early in the morning and hence after a period of low ozone concentration. The different results suggest that Bel W3 possesses a less efficient recovery apparatus that requires a longer period of activity to be effective and/or is less protected against reactive oxygen species production during exposure to ozone. However, it cannot be excluded that the increase in mean DNA damage is the result of the presence of a genotoxic agent(s) other than ozone. Interestingly, Bel W3 also appears to be more responsive, compared with Bel B, when exposed to ambient indoor pollutants. The use of cv. Bel W3 increases the sensitivity of the assay under both indoor and field conditions. However, different classes of mutagens should be tested to define the range of profitable utilization of this tobacco cultivar for environmental genotoxicity detection.
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Affiliation(s)
- Francesco Maria Restivo
- Istituto di Genetica, Università degli Studi di Parma, Parco Area delle Scienze 11/A, I-43100 Parma, Italy.
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16
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Pavesi A, Ficarelli A, Tassi F, Restivo FM. Cloning of two glutamate dehydrogenase cDNAs from Asparagus officinalis: sequence analysis and evolutionary implications. Genome 2000; 43:306-16. [PMID: 10791819 DOI: 10.1139/g99-127] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two different amplification products, termed c1 and c2, showing a high similarity to glutamate dehydrogenase sequences from plants, were obtained from Asparagus officinalis using two degenerated primers and RT-PCR (reverse transcriptase polymerase chain reaction). The genes corresponding to these cDNA clones were designated aspGDHA and aspGDHB. Screening of a cDNA library resulted in the isolation of cDNA clones for aspGDHB only. Analysis of the deduced amino acid (aa) sequence from the full-length cDNA suggests that the gene product contains all regions associated with metabolic function of NAD glutamate dehydrogenase (NAD-GDH). A first phylogenetic analysis including only GDHs from plants suggested that the two GDH genes of A. officinalis arose by an ancient duplication event, pre-dating the divergence of monocots and dicots. Codon usage analysis showed a bias towards A/T ending codons. This tendency is likely due to the biased nucleotide composition of the asparagus genome, rather than to the translational selection for specific codons. Using principal coordinate analysis, the evolutionary relatedness of plant GDHs with homologous sequences from a large spectrum of organisms was investigated. The results showed a closer affinity of plant GDHs to GDHs of thermophilic archaebacterial and eubacterial species, when compared to those of unicellular eukaryotic fungi. Sequence analysis at specific amino acid signatures, known to affect the thermal stability of GDH, and assays of enzyme activity at non-physiological temperatures, showed a greater adaptation to heat-stress conditions for the asparagus and tobacco enzymes compared with the Saccharomyces cerevisiae enzyme.
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Affiliation(s)
- A Pavesi
- Department of Evolutionary and Functional Biology, University of Parma, Italy
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17
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Pavesi A, Ficarelli A, Tassi F, Restivo FM. Cloning of two glutamate dehydrogenase cDNAs from Asparagus officinalis: Sequence analysis and evolutionary implications. Genome 2000. [DOI: 10.1139/gen-43-2-306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Poli P, Buschini A, Restivo FM, Ficarelli A, Cassoni F, Ferrero I, Rossi C. Comet assay application in environmental monitoring: DNA damage in human leukocytes and plant cells in comparison with bacterial and yeast tests. Mutagenesis 1999; 14:547-56. [PMID: 10567029 DOI: 10.1093/mutage/14.6.547] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Urban airborne particulate is a complex mixture of air pollutants, many of which have not been identified. However, short-term mutagenesis tests together with chemicophysical parameter analysis are able to better assess air quality and genotoxic load. The findings of continuous monitoring (January 1991-August 1998) of urban air genotoxicity of a Po Valley town (Italy) on Salmonella typhimurium and Saccharomyces cerevisiae are reported. During this period, various measures (catalytic devices, unleaded fuels, annual vehicle overhaul, etc.) to improve air-dispersed pollutant control were enforced. However, a continuous presence of genotoxic compounds is shown and more qualitative than quantitative changes are evident. We also demonstrate the ability of the Comet assay to detect DNA-damaging agents in airborne particulate samples. We applied the test to human leukocytes and, with major improvements, to plant cells (Allium cepa roots and epigean tissues of Impatiens balsamina). The first findings on human leukocytes confirm the sensitivity of this assay, its peculiarity and its applicability in assessing genotoxicity in environmental samples. The capability of plants to show the response of multicellular organisms to environmental pollutants largely counterbalances a probable lowering in sensitivity. Moreover, application of the Comet test to epigean tissues could be useful in estimating the bioavailability of and genotoxic damage by air pollutants, including volatile compounds (ozone, benzene, nitrogen oxides, etc.) to higher plants.
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Affiliation(s)
- P Poli
- Istituto di Genetica, Università degli Studi di Parma, Parco Area delle Scienze 11/a, 43100 Parma and ARPA Emilia Romagna, Sezione di Parma, Parma, Italy.
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Ficarelli A, Tassi F, Restivo FM. Isolation and characterization of two cDNA clones encoding for glutamate dehydrogenase in Nicotiana plumbaginifolia. Plant Cell Physiol 1999; 40:339-42. [PMID: 10353219 DOI: 10.1093/oxfordjournals.pcp.a029547] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We have isolated two full length cDNA clones encoding Nicotiana plumbaginifolia NADH-glutamate dehydrogenase. Both clones share amino acid boxes of homology corresponding to conserved GDH catalytic domains and putative mitochondrial targeting sequence. One clone shows a putative EF-hand loop. The level of the two transcripts is affected differently by carbon source.
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Affiliation(s)
- A Ficarelli
- Institute of Genetics, University of Parma, Italy
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20
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Restivo FM, Tassi F, Biffi R, Falavigna A, Caporali E, Carboni A, Doldi ML, Spada A, Marziani GP. Linkage Arrangement of RFLP loci in progenies from crosses between doubled haploid Asparagus officinalis L. clones. Theor Appl Genet 1995; 90:124-128. [PMID: 24173793 DOI: 10.1007/bf00221005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/1994] [Accepted: 07/28/1994] [Indexed: 06/02/2023]
Abstract
A preliminary genetic map of the dioecious species Asparagus officinalis L. (2n = 20) has been constructed on the basis of restriction fragment length polymorphism (RFLP) and isozyme marker data. With DNA samples digested with either EcoRI or HindIII 61 out of 148 probes (41%) identified RFLPs in six families of doubled haploid lines obtained through anther culture. A higher level of polymorphism (65%) was observed when a single family was screened for RFLPs using six distinct restriction enzymes. Segregation analysis of the BC progenies (40-80 individuals) resulted in a 418-cM extended map comprising 43 markers: 39 RFLPs, three isozymes and one morphological (sex). These markers are clustered in 12 linkage groups and four of them exhibited significant deviations from the expected 1∶1 ratio. One isozyme and three RFLP markers were assigned to the sex chromosome.
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Affiliation(s)
- F M Restivo
- Institute of Genetics, University of Parma, Viale delle Scienze, I-43100, Parma, Italy
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21
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Maestri E, Restivo FM, Marziani Longo GP, Falavigna A, Tassi F. Isozyme gene markers in the dioecious species Asparagus officinalis L. Theor Appl Genet 1991; 81:613-618. [PMID: 24221375 DOI: 10.1007/bf00226726] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/1990] [Accepted: 10/16/1990] [Indexed: 06/02/2023]
Abstract
Extracts from phylloclads of Asparagus officinails were electrophoretically analyzed for isozyme polymorphism. Fourteen enzyme systems were examined using four buffer systems: seven enzymes (acid phosphatase, catalase, glutamate-oxaloacetate transaminase, isocitrate dehydrogenase, malate dehydrogenase, peroxidase, and 6-phosphogluconate dehydrogenase) exhibited clear and consistent banding patterns. Isozyme polymorphism was studied in seven pairs of male and female doubled haploids and in their male F1s. Segregation of polymorphic loci was examined in the backcross progenies and was found to be consistent with a simple Mendelian inheritance in all cases, except for three anodical peroxidases, where two factors have been hypothesized. No linkage could be found between isozyme markers that were segregating in the same cross, but association was demonstrated between one malate dehydrogenase locus and the sex determining genes. The availability of isozyme markers may be useful in breeding and, in particular, the localization of one malate dehydrogenase locus on the sex chromosomes may be helpful in mapping the sex genes.
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Affiliation(s)
- E Maestri
- Institute of Genetics, University of Parma, Viale delle Scienze, I-43100, Parma, Italy
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Marmiroli N, Donnini C, Restivo FM, Tassi F, Puglisi PP. Analysis of rho mutability in Saccharomyces cerevisiae. II. Role of the mitochondrial protein synthesis. Mol Gen Genet 1980; 177:589-95. [PMID: 6991866 DOI: 10.1007/bf00272668] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Marmiroli N, Restivo FM, Donnini C, Bianchi L, Puglisi PP. Analysis of rho mutability in Saccharomyces cerevisiae. I. Effects of mmc and pet-ts alleles. Mol Gen Genet 1980; 177:581-8. [PMID: 6991865 DOI: 10.1007/bf00272667] [Citation(s) in RCA: 6] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Two additional types of nuclear determinants involved in the control of spontaneous mutability of rho in S. cerevisiae have been identified: mmc and the pet-ts 1, 2, 10, 52 and 53 genes. These genes in their mutated recessive form increase at various extents the number of respiratory deficient cytoplasmic "petite" mutants accumulated. The gene mmc does not affect the respiratory activity and is not temperature-dependent whereas the pet-ts genes determine at the non permissive temperature a respiratory deficient phenotypes even if they affect the mutability of rho at the permissive and at the non permissive temperature. The data here reported suggest that a "replicative complex" exists for the mitochondrial DNA. It is in the purpose of this paper to deal with the relative contribution that mmc and pet-ts gene products have in ensuring the fidelity of this "replicative complex".
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