Similar results were obtained when maize plants were infested with M. separata after VOCos exposure: the plants emitted higher levels of VOCs, including b-myrcene, Hex-Ac, (E)-b- ocimene, linalool, (E)-DMNT, decanal, (E)-b-caryophyllene, (E)-a- bergamotene and (E)-b-farnesene, compared to the VOCwt- receiver plants infested with M. separata (Figure 3F). The emission levels were, however, not enhanced when VOCos-receiver bean or maize plants were kept without infestation for 1 day after the exposure (Figures 3B and E).