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  • Title: Chemical and genetic diversity of Zataria multiflora Boiss. accessions growing wild in Iran.
    Author: Hadian J, Ebrahimi SN, Mirjalili MH, Azizi A, Ranjbar H, Friedt W.
    Journal: Chem Biodivers; 2011 Jan; 8(1):176-88. PubMed ID: 21259428.
    Abstract:
    Zataria multiflora Boiss. is an aromatic shrub belonging to the Lamiaceae family. Its aerial parts are used in the traditional medicine and in the pharmaceutical and food industries. The terpenoid and genetic profiles of 18 accessions of Z. multiflora, collected in different locations in Iran, have been analyzed by GC/FID and GC/MS or by AFLP (amplified fragment length polymorphism) analyses, respectively. Altogether, 56 compounds were identified in the essential oils, with the major constituents being thymol (6.0-54.9%), carvacrol (0.7-50.6%), linalool (1.2-46.8%), and p-cymene (1.6-14.8%). On the basis of the essential-oil composition, the 18 accessions were divided into four groups. The first group was characterized by a high content of carvacrol, thymol, and linalool, the second group was dominated by carvacrol, thymol, and p-cymene, the third group was characterized by a high concentration of thymol and a low content of carvacrol and p-cymene, and the forth group contained linalool and carvacrol as the main components. The AFLP results revealed that the average genetic similarity (GS) between the accessions was 0.61, ranging from 0.40 to 0.77. The UPGMA (unweighted pair-group method with arithmetic mean) cluster analysis divided all accessions into five groups at a similarity level of 0.60. The two clusters generated, the first based on the essential-oil compositions and the second on the AFLP data, showed a different pattern of relationships among the accessions. The knowledge of the Z. multiflora chemotype diversity, illustrated in this study, will allow an improvement of the homogeneity of the plant material for the production of different types of essential oils, depending on the demands of the pharmaceutical and food industries for specific uses.
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