HS-SPME-GC/MS analysis of the volatile compounds of <Emphasis Type="Italic">Achillea collina</Emphasis>: Evaluation of the emissions fingerprint induced by <Emphasis Type="Italic">Myzus persicae</Emphasis> infestation |
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Authors: | Annamaria Giorgi Sara Panseri Niranjala Nanayakkarawasam Masachchige Chandrika Nanayakkara Luca Maria Chiesa |
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Institution: | 1.Department of Plant Production,University of Milan,Milan,Italy;2.Department of Technologies and Veterinary Science for Food Safety,University of Milan,Milan,Italy |
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Abstract: | A Headspace Solid-phase Microextraction (HS-SPME) method combined with Gas Chromatography-Mass Spectrometry (GC/MS) was developed
and optimized to extrat and analyze the volatile compounds of aerial parts of Achillea collina Becker ex Rchb. and to investigate the effect of the phlem feeding aphid Myzus persicae Sulzer on the Volatile Organic Compounds (VOCs) emitted by the infested plants. The extraction of 1 g of powdered freeze
dried plant samples for 120 min at 30°C using divinylbenzene-carbowax-polydimethylsiloxane (DVB/CAR/PDMS) fiber showed the
highest area counts for the majority of the volatile compounds. Overall, 62 and 80 volatile compounds were detected in control
and infested plant samples respectively. In A. collina infested plants, we observed a great increase in both monoterpenes and sesquiterpenes fractions. Several changes among alcohols
also occurred, particularly regarding Z-3-hexen-1-ol, E-3-hexen-1-ol and E-2-hexen-1-ol proposing these compounds as herbivore-induces
plant volatiles (HIPVs). New perspective for agricultural practice may derive from the opportunity to identify novel herbivores-induced
plant VOCs active as plant protection agents. |
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