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Haddaji F, Papetti A, Noumi E, Colombo R, Deshpande S, Aouadi K, Adnan M, Kadri A, Selmi B, Snoussi M. Bioactivities and in silico study of Pergularia tomentosa L. phytochemicals as potent antimicrobial agents targeting type IIA topoisomerase, TyrRS, and Sap1 virulence proteins. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:25349-25367. [PMID: 33454827 DOI: 10.1007/s11356-020-11946-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
Pergularia tomentosa L. (P. tomentosa) has been largely used in Tunisian folk medicine as remedies against skin diseases, asthma, and bronchitis. The main objectives of this study were to identify phytochemical compounds that have antioxidant and antimicrobial properties from the stem, leaves, and fruit crude methanolic extracts of P. tomentosa, and to search for tyrosyl-tRNA synthetase (TyrRS), topoisomerase type IIA, and Candidapepsin-1 (SAP1) enzyme inhibitors through molecular docking study. Phytochemical quantification revealed that fruit and leaves extracts displayed the highest total flavonoids (582 mg QE/g Ex; 219 mg QE/g Ex) and tannins content (375 mg TAE/g Ex; 216 mg TAE/g Ex), also exhibiting significant scavenging activity to decrease free radicals for ABTS, DPPH, β-carotene, and FRAP assay with IC50 values (> 1 mg/mL). Additionally, promising antimicrobial activities towards different organs have been observed against several bacteria and Candida strains. From the liquid chromatography-mass spectrometry (LC-MS) analysis, five polyphenolic compounds, namely digitoxigenin, digitonin glycoside and calactina in the leaves, kaempferol in the fruit, and calotropagenin in the stems, were identified. They were also analyzed for their drug likeliness, based on computational methods. Molecular docking study affirmed that the binding affinity of calactin and actodigin to the active site of TyrRS, topoisomerase type IIA, and SAP1 target virulence proteins was the highest among the examined dominant compounds. Therefore, this study indicated that P. tomentosa methanolic extracts displayed great potential to become a potent antimicrobial agent and might be a promising source for therapeutic and nutritional functions. These phytocompounds could be further promoted as a candidate for drug discovery and development.
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Affiliation(s)
- Fatma Haddaji
- Laboratory of Genetics, Biodiversity and Valorization of Bio-resources (LR11ES41), University of Monastir, Higher Institute of Biotechnology of Monastir, Avenue Tahar Haddad, BP74, 5000, Monastir, Tunisia
| | - Adele Papetti
- Nutraceutical & Food Chemical-Toxicological Analysis Laboratory, Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Emira Noumi
- Department of Biology, College of Science, University of Ha'il, P.O. 2440, Hail, Saudi Arabia
- Laboratory of Bioressources: Integrative Biology and Valorization, (LR14-ES06), University of Monastir, Higher Institute of Biotechnology of Monastir, Avenue Tahar Haddad, BP 74, 5000, Monastir, Tunisia
| | - Raffaella Colombo
- Nutraceutical & Food Chemical-Toxicological Analysis Laboratory, Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Sumukh Deshpande
- Central Biotechnology Services, College of Biomedical and Life Sciences, Cardiff University, Cardiff, Wales, CF14 4XN, UK
| | - Kaïss Aouadi
- Faculty of Science and Arts in Baljurashi, Albaha University, P.O. Box 1988, Albaha, Saudi Arabia
- Faculty of Science of Monastir, Laboratory of Hetrocyclic Chemistry, Natural Products and Reactivity, Avenue of the Environment, University of Monastir, 5019, Monastir, Tunisia
| | - Mohd Adnan
- Department of Biology, College of Science, University of Ha'il, P.O. 2440, Hail, Saudi Arabia
| | - Adel Kadri
- Faculty of Science of Sfax, Department of Chemistry, University of Sfax, B.P. 1171, 3000, Sfax, Tunisia
- Department of Chemistry, College of Science, Qassim University, Buraidah, 51452, Saudi Arabia
| | - Boulbaba Selmi
- Laboratory of Bioressources: Integrative Biology and Valorization, (LR14-ES06), University of Monastir, Higher Institute of Biotechnology of Monastir, Avenue Tahar Haddad, BP 74, 5000, Monastir, Tunisia
| | - Mejdi Snoussi
- Department of Biology, College of Science, University of Ha'il, P.O. 2440, Hail, Saudi Arabia.
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Mohamed MSM, Saleh AM, Abdel-Farid IB, El-Naggar SA. Growth, hydrolases and ultrastructure of Fusarium oxysporum as affected by phenolic rich extracts from several xerophytic plants. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 141:57-64. [PMID: 28911741 DOI: 10.1016/j.pestbp.2016.11.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 11/13/2016] [Accepted: 11/18/2016] [Indexed: 05/25/2023]
Abstract
Fusarium oxysporum, the causal agent of rot and wilt diseases, is one of the most detrimental phytopathogens for the productivity of many economic crops. The present study was conducted to evaluate the potentiality of some xerophytic plants as eco-friendly approach for management of F. oxysporum. Phenolic rich extracts from five plants namely: Horwoodia dicksoniae, Citrullus colocynthis, Gypsophila capillaris, Pulicaria incisa and Rhanterium epapposum were examined in vitro. The different extracts showed high variability in their phenolic and flavonoid contents as well as total antioxidant capacity. A strong positive correlation existed between the antifungal activity of the tested extracts and their contents of both total phenolics and flavonoids (r values are 0.91 and 0.82, respectively). Extract of P. incisa was the most effective in reducing the mycelial growth (IC50=0.92mg/ml) and inhibiting the activities of CMCase, pectinase, amylase and protease by 36, 42, 58 and 55%, respectively. The high performance liquid chromatography analysis of P. incisa extract revealed the presence of eight phenolic acids along with five polyphenolic compounds. The flavonol, quercetin and its glycosides rutin and quercetrin were the most abundant followed by the phenolic acids, t-cinnamic, caffeic, ferulic and vanillic. P. incisa extract not only affects the growth and hydrolases of F. oxysporum but also induces ultrastructure changes in the mycelium, as revealed by transmission electron microscopy. To our knowledge, this is the first study to investigate the mechanisms underlying the antifungal activity of P. incisa.
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Affiliation(s)
- Mahmoud S M Mohamed
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Ahmed M Saleh
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, Egypt; Department of Biology, Faculty of Sciences, Taibah University, Yanbu, Saudi Arabia.
| | - Ibrahim B Abdel-Farid
- Department of Biology, Faculty of Science, Aljouf University, Sakakah, Aljouf, Saudi Arabia; Botany Department, Faculty of Science, Aswan University, Aswan 81528, Egypt
| | - Sabry A El-Naggar
- Department of Biology, Faculty of Science, Aljouf University, Sakakah, Aljouf, Saudi Arabia; Zoology Department, Faculty of Science, Tanta University, Tanta 3111, Egypt
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