The aim of the study was to investigate volatile compounds from the aerial parts of Dianthus acicularis of the genus Dianthus of the family Caryophyllaceae grown wild in Northern Kazakhstan for the first time. D. acicularis is a typical Trans-Volga-Kazakhstani endemic. D. acicularis has high resistance to the bacterial wilt, a serious disease caused by Burkholderia caryophylli. The qualitative and quantitative compositions of the specimens of the essential oils were analysed by the method of GC-MS. The main constituents of D. acicularis essential oil were methyl ketones - 2-pentadecanone (26.9-32.2%) and 2-tridecanone (4.7-17.7%), identified for the first time in the Dianthus genus. The methyl ketone activity provides protection of the plants from herbivores and fungal pathogens. One can suppose that the presence of 2-pentadecanone and 2-tridecanone in the essential oil of carnation coniferous provides its resistance to different insects and pathogens, including the resistance to the bacterial wilt.
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