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Chemical composition and antimicrobial and allelopathic activity of Tunisian Conyza sumatrensis (Retz.) E.WALKER essential oils.
Chem Biodivers. 2013 Feb; 10(2):209-23.CB

Abstract

Conyza sumatrensis (Retz.) E.WALKER (Asteraceae) is a spontaneous annual herb, fairly widespread throughout Tunisia, which has rarely been studied or valued in any sector. Essential oils were obtained by hydrodistillation of different parts (flower heads, leaves, stems, and roots) of C. sumatrensis plants, which were collected in autumn (November 2007) at the flowering stage in the area of Monastir, Tunisia. In total, 98 compounds, representing 88.1-99.3% of the oil composition, were identified by GC-FID and GC/MS analyses. The root essential oil was distinguished by its high content in acetylenes (matricaria ester, 4; 74.3%), while those from flower heads and leaves were dominated by oxygenated sesquiterpenes (61.1 and 50.3%, resp.). The oils of C. sumatrensis from Tunisia belonged to a matricaria ester/caryophyllene oxide chemotype. All the oils were evaluated for antibacterial, antifungal, and allelopathic activities. The results indicate that the leaf oil exhibited significant in vitro antibacterial activity against Enterococcus faecalis, Staphylococcus aureus, and Proteus mirabilis and that the C. sumatrensis oils isolated from the aerial parts presented high mycelia-growth inhibition of Candida albicans and the filamentous fungi tested. Moreover, the essential oils of the different plant parts inhibited the shoot and root growth of Raphanus sativus (radish) seedlings. Indeed, the inhibition of the hypocotyl growth varied from 28.6 to 90.1% and that of the radicle from 42.3 to 96.2%.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Mabrouk S
Laboratory of Genetic Biodiversity and Valorisation of Bioresources (LR11ES41), Higher Institute of Biotechnology of Monastir, University of Monastir, Rue Tahar Haddad, 5000 Monastir, Tunisia.
Salah KB
No affiliation info available
Elaissi A
No affiliation info available
Jlaiel L
No affiliation info available
Jannet HB
No affiliation info available
Aouni M
No affiliation info available
Harzallah-Skhiri F
No affiliation info available

MeSH

Anti-Infective AgentsBacterial InfectionsCandida albicansConyzaEnterococcus faecalisFungiGas Chromatography-Mass SpectrometryHumansMicrobial Sensitivity TestsMycosesOils, VolatileProteus mirabilisRaphanusStaphylococcus aureusTunisia

Pub Type(s)

Journal Article

Language

eng

PubMed ID

23418168

Citation

Mabrouk, Samia, et al. "Chemical Composition and Antimicrobial and Allelopathic Activity of Tunisian Conyza Sumatrensis (Retz.) E.WALKER Essential Oils." Chemistry & Biodiversity, vol. 10, no. 2, 2013, pp. 209-23.
Mabrouk S, Salah KB, Elaissi A, et al. Chemical composition and antimicrobial and allelopathic activity of Tunisian Conyza sumatrensis (Retz.) E.WALKER essential oils. Chem Biodivers. 2013;10(2):209-23.
Mabrouk, S., Salah, K. B., Elaissi, A., Jlaiel, L., Jannet, H. B., Aouni, M., & Harzallah-Skhiri, F. (2013). Chemical composition and antimicrobial and allelopathic activity of Tunisian Conyza sumatrensis (Retz.) E.WALKER essential oils. Chemistry & Biodiversity, 10(2), 209-23. https://doi.org/10.1002/cbdv.201200117
Mabrouk S, et al. Chemical Composition and Antimicrobial and Allelopathic Activity of Tunisian Conyza Sumatrensis (Retz.) E.WALKER Essential Oils. Chem Biodivers. 2013;10(2):209-23. PubMed PMID: 23418168.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chemical composition and antimicrobial and allelopathic activity of Tunisian Conyza sumatrensis (Retz.) E.WALKER essential oils. AU - Mabrouk,Samia, AU - Salah,Karima Bel Hadj, AU - Elaissi,Ameur, AU - Jlaiel,Lobna, AU - Jannet,Hichem Ben, AU - Aouni,Mahjoub, AU - Harzallah-Skhiri,Fethia, PY - 2012/04/05/received PY - 2013/2/19/entrez PY - 2013/2/19/pubmed PY - 2013/8/2/medline SP - 209 EP - 23 JF - Chemistry & biodiversity JO - Chem Biodivers VL - 10 IS - 2 N2 - Conyza sumatrensis (Retz.) E.WALKER (Asteraceae) is a spontaneous annual herb, fairly widespread throughout Tunisia, which has rarely been studied or valued in any sector. Essential oils were obtained by hydrodistillation of different parts (flower heads, leaves, stems, and roots) of C. sumatrensis plants, which were collected in autumn (November 2007) at the flowering stage in the area of Monastir, Tunisia. In total, 98 compounds, representing 88.1-99.3% of the oil composition, were identified by GC-FID and GC/MS analyses. The root essential oil was distinguished by its high content in acetylenes (matricaria ester, 4; 74.3%), while those from flower heads and leaves were dominated by oxygenated sesquiterpenes (61.1 and 50.3%, resp.). The oils of C. sumatrensis from Tunisia belonged to a matricaria ester/caryophyllene oxide chemotype. All the oils were evaluated for antibacterial, antifungal, and allelopathic activities. The results indicate that the leaf oil exhibited significant in vitro antibacterial activity against Enterococcus faecalis, Staphylococcus aureus, and Proteus mirabilis and that the C. sumatrensis oils isolated from the aerial parts presented high mycelia-growth inhibition of Candida albicans and the filamentous fungi tested. Moreover, the essential oils of the different plant parts inhibited the shoot and root growth of Raphanus sativus (radish) seedlings. Indeed, the inhibition of the hypocotyl growth varied from 28.6 to 90.1% and that of the radicle from 42.3 to 96.2%. SN - 1612-1880 UR - https://www.unboundmedicine.com/medline/citation/23418168/Chemical_composition_and_antimicrobial_and_allelopathic_activity_of_Tunisian_Conyza_sumatrensis__Retz___E_WALKER_essential_oils_ L2 - https://doi.org/10.1002/cbdv.201200117 DB - PRIME DP - Unbound Medicine ER -