882809ee5df32a1110e01fbd91fa6053 pmc_28703755.pdf 0303a0a2633950077b535144d9366f7998113e16 pmc_28703755.pdf 6e097321dda246517ce514fbd47fb8132a6a252e06c3681e694f0d41953f43ce pmc_28703755.pdf Title: -Ocimene, a Key Floral and Foliar Volatile Involved in Multiple Interactions between Plants and Other Organisms Subject: -Ocimene is a very common plant volatile released in important amounts from the leaves and flowers of many plant species. This acyclic monoterpene can play several biological functions in plants, by potentially affecting floral visitors and also by mediating defensive responses to herbivory. The ubiquity and high relative abundance of -ocimene in the floral scents of species from most plant families and from different pollination syndromes (ranging from generalism to specialism) strongly suggest that this terpenoid may play an important role in the attraction of pollinators to flowers. We compiled abundant evidence from published studies that supports -ocimene as a generalist attractant of a wide spectrum of pollinators. We found no studies testing behavioural responses of pollinators to -ocimene, that could directly demonstrate or deny the function of -ocimene in pollinator attraction; but several case studies support that the emissions of -ocimene in flowers of different species follow marked temporal and spatial patterns of emission, which are typical from floral volatile organic compound (VOC) emissions that are involved in pollinator attraction. Furthermore, important -ocimene emissions are induced from vegetative plant tissues after herbivory in many species, which have relevant functions in the establishment of tritrophic interactions. We thus conclude that -ocimene is a key plant volatile with multiple relevant functions in plants, depending on the organ and the time of emission. Experimental behavioural studies on pure -ocimene conducted with pollinating insects will be necessary to prove the assumptions made here. Keywords: trans–ocimene; (E)–ocimene; floral scent; dominant VOCs Author: Gerard Farré-Armengol, Iolanda Filella, Joan Llusià and Josep Peñuelas Creator: LaTeX with hyperref package Producer: pdfTeX-1.40.15 CreationDate: Thu Jul 13 07:10:26 2017 CEST ModDate: Thu Jul 13 07:10:26 2017 CEST Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 9 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 4854533 bytes Optimized: no PDF version: 1.5 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- YXRBDO+URWPalladioL-Ital Type 1 Custom yes yes no 48 0 ZYYJXI+EURB10 Type 1 Builtin yes yes no 49 0 AYTAJN+URWPalladioL-Bold Type 1 Custom yes yes no 50 0 MWJZGO+VnURWPalladioL-Bold Type 1 Custom yes yes no 51 0 OTGEXZ+URWPalladioL-Roma Type 1 Custom yes yes no 52 0 DTOEFB+VnURWPalladioL Type 1 Custom yes yes no 53 0 QDCWHF+EURM10 Type 1 Builtin yes yes no 54 0 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