Essential Oils of Myrtaceae Species Growing Wild in Tunisia: Chemical Variability and Antifungal Activity Against <i>Biscogniauxia mediterranea</i>, the Causative Agent of Charcoal Canker

Yangui, Islem; Boutiti, Meriem Zouaoui; Boussaïd, Mohamed; Messaoud, Chokri

doi:10.1002/cbdv.201700058

Cited by 27 publications

(24 citation statements)

References 43 publications

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“…The antifungal activity of the EtOAc extracts was tested using the micro-atmosphere method, with modifications [ 19 ]. A mycelial agar disk (diameter = 7 mm) from each plant pathogenic fungus isolated from a 7-day culture was placed at the center of a Petri dish containing 15 mL PDA medium.…”

Section: Methodsmentioning

confidence: 99%

Anti-Phytopathogenic and Cytotoxic Activities of Crude Extracts and Secondary Metabolites of Marine-Derived Fungi

et al. 2018

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Thirty-one isolates belonging to eight genera in seven orders were identified from 141 strains that were isolated from several marine plants. Alternaria sp. and Fusarium sp. were found to be the predominant fungi. Evaluation of the anti-phytopathogenic bacterial and fungal activities, as well as the cytotoxicity of these 31 extracts, revealed that most of them displayed different levels of bioactivities. Due to their interesting bioactivities, two fungal strains—Fusarium equiseti (P18) and Alternaria sp. (P8)—were selected for chemical investigation and compounds 1–4 were obtained. The structure of 1 was elucidated by 1D and 2D NMR analysis, as well as high-resolution electrospray ionization mass spectroscopy (HRESIMS), and the absolute configuration of its stereogenic carbon (C-11) was established by comparison of the experimental and calculated electronic circular-dichroism (ECD) spectra. Moreover, alterperylenol (4) exhibited antibacterial activity against Clavibacter michiganensis with a minimum inhibitory concentration (MIC) of 1.95 μg/mL, which was 2-fold stronger than that of streptomycin sulfate. Additionally, an antibacterial mechanism study revealed that 4 caused membrane hyperpolarization without evidence of destruction of cell membrane integrity. Furthermore, stemphyperylenol (3) displayed potent antifungal activity against Pestallozzia theae and Alternaria brassicicola with MIC values equal to those of carbendazim. The cytotoxicity of 1 and 2 against human lung carcinoma (A-549), human cervical carcinoma (HeLa), and human hepatoma (HepG2) cell lines were also evaluated.

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Section: Methodsmentioning

confidence: 99%

Anti-Phytopathogenic and Cytotoxic Activities of Crude Extracts and Secondary Metabolites of Marine-Derived Fungi

et al. 2018

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“…The same kind of pattern has been observed with EO. Mentha x piperita has been demonstrated efficient against Rhizoctonia solani and Macrophomina phaseolina, showing a lower MIC than Bunium persicum and Thymus vulgaris EO [53], but less efficient in the management of Fusarium oxysporum [54] and Penicillium verrucosum [55], nevertheless expressing an antifungal activity. Furthermore, EO from Lemongrass (Cymbopogon citratus) was demonstrated efficient against Colletotrichum gloeosporioides [56] and Aspergillus spp.…”

Section: Antifungal and Anti-oomycete Propertiesmentioning

confidence: 99%

Essential Oils as Potential Alternative Biocontrol Products against Plant Pathogens and Weeds: A Review

Raveau

Fontaine

Sahraoui

2020

Foods

309

186

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Naturally produced by aromatic plants, essential oils (EO) contain a wide range of volatile molecules, including mostly secondary metabolites, which possess several biological activities. Essential oils properties such as antioxidant, antimicrobial and anti-inflammatory activities are known for a long time and hence widely used in traditional medicines, cosmetics and food industries. However, despite their effects against many phytopathogenic fungi, oomycetes and bacteria as well as weeds, their use in agriculture remains surprisingly scarce. The purpose of the present review is to gather and discuss up-to-date biological activities of EO against weeds, plant pathogenic fungi, oomycetes and bacteria, reported in the scientific literature. Innovative methods, potentially valuable to improve the efficiency and reliability of EO, have been investigated. In particular, their use towards a more sustainable agriculture has been discussed, aiming at encouraging the use of alternative products to substitute synthetic pesticides to control weeds and plant diseases, without significantly affecting crop yields. An overview of the market and the recent advances on the regulation of these products as well as future challenges to promote their development and wider use in disease management programs is described. Because of several recent reviews on EO insecticidal properties, this topic is not covered in the present review.

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“…With regards to the literature contributions on myrtle EO composition, in Table S1 we depicted the main compounds (relative percentages higher than 9.5%), detected in the samples from different European and extra-European countries [ 8 , 9 , 11 , 12 , 15 , 16 , 17 , 18 , 23 , 30 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 ,…”

Section: Resultsmentioning

confidence: 99%

Botanic Garden as a Factory of Molecules: Myrtus communis L. subsp. communis as a Case Study

Giuliani

Bottoni

Milani

et al. 2022

Plants

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A novel perception of botanic gardens as complex “factories of molecules” (Lombardy Region Project–Lr. 25/2016, year 2021), that mediate plant–environment interactions, and are the basis of their utility for humans, is presented. The core-topic is the medicinal plant heritage of the Ghirardi Botanic Garden (Toscolano Maderno, Brescia, Italy) of the University of Milan. In this work, we studied Myrtus communis L. subsp. communis (Myrtaceae) at multiple scale levels: macro- and micromorphological, with special emphasis on the secretory structures responsible for the production of secondary metabolites; phytochemical, with the analysis of the essential oil (EO) composition from leaves (fresh, dried, stored at −20 °C and at −80 °C) and fruits over two consecutive years (2018 and 2019); bio-ecological, with a focus, based on literature data, on the ecology and biological activity of the main EO components. The occurrence of secretory cavities producing terpenes, along with flavonoids, was proven. A high level of chemical variability across the obtained EO profiles emerged, especially that concerning quantitative data. However, regardless of the different conservation procedures, the examined plant part, or the phenological stage, we detected the presence of three ubiquitous compounds: α-pinene, 1,8-cineole, and linalool. The overall results will serve to enrich the Ghirardi Botanic Garden with novel labeling showing accurate and updated scientific information in an Open science perspective.

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Essential Oils of Myrtaceae Species Growing Wild in Tunisia: Chemical Variability and Antifungal Activity Against Biscogniauxia mediterranea, the Causative Agent of Charcoal Canker

Cited by 27 publications

References 43 publications

Anti-Phytopathogenic and Cytotoxic Activities of Crude Extracts and Secondary Metabolites of Marine-Derived Fungi

Anti-Phytopathogenic and Cytotoxic Activities of Crude Extracts and Secondary Metabolites of Marine-Derived Fungi

Essential Oils as Potential Alternative Biocontrol Products against Plant Pathogens and Weeds: A Review

Botanic Garden as a Factory of Molecules: Myrtus communis L. subsp. communis as a Case Study

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