Chemical Composition and Antibacterial Activity of Essential Oils Isolated from Medicinal Plants against Gall Forming Plant Pathogenic Bacterial Disease Agents

BOZKURT I. A., SOYLU S., Kara M., Soylu E. M.

Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi, cilt.23, sa.6, ss.1474-1482, 2020 (ESCI) identifier

Özet

The aims of this study were to determine chemical composition ofessential oils from different plant species and their antibacterialactivities against gal-forming plant pathogenic bacterial diseaseagents Rhizobium radiobacter, Pseudomonas savastanoi pv.savastanoi and P.savastanoi pv. nerii. The chemical compositions ofessential oils were identified by GC/MS. The major constituents of theessential oils were carvacrol in Thymbra spicata var. spicata (66.88%)and Origanum syriacum (79.8%), thymol in Thymus serpyllum(41.03%), geranial in Thymus sipyleus (13.72%) and Melissa officinalis(30.4), 4-terpineol in Origanum majorana (31.67%), linalool inOcimum basilicum (30.23%), carvone in Mentha spicata (55.58%), 1,8cineole in Lavandula stoechas var. stoechas (35.5%), Laurus nobilis(35.5%) and Rosmarinus officinalis (18.47%), camphor in Salviaofficinalis (24.59%) and trans-anethole in Foeniculum vulgare (82.8%)essential oils, respectively. Based on inhibition zone diameter values,essential oils showed very strong antibacterial activities againstP.savastanoi pv. savastanoi (7.0-44.67 mm), followed by R.radiobacter(9.6-37.67 mm) and P.savastanoi pv. nerii (6.33-18.33 mm). Essentialoils of plants belong to Lamiaceae family were generally found to bemore efficient than those belong to Lauraceae and Apiaceae families.The essential oils of O.syriacum, T.serpyllum and T.spicata var.spicata were found to be the most promising essential oils displayingthe highest antibacterial activities against all tested bacterial species.The findings of the present study revealed that essential oils have apotential to be used as antibacterial agents against gall formingbacterial disease agents.