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Volatiles emitted by healthy Artemisia ordosica (Asteraceae) and plants infested with larvae of Sphenoptera sp. (Coleoptera: Buprestidae) or Holcocerus artemisiae (Lepidoptera: Cossidae) were obtained using a dynamic headspace method and analysed by automatic thermal desorption/gas
Volatiles emitted by healthy, mechanically damaged, and weevil-infested Artemisia ordosica (Asteraceae) were obtained through a dynamic headspace method and analysed by automatic thermal desorption/gas chromatography/mass spectrometry (ATD/GC/MS). Twenty-eight compounds in all were identified, and
Sesquiterpene cyclases (synthases) catalyze the conversion of the isoprenoid intermediate farnesyl diphosphate to various sesquiterpene structural types. In plants, many sesquiterpenes are produced as defensive chemicals (phytoalexins) or mediators of chemical communication (i.e., pollinator