Complex Sexual Deception in an Orchid Is Achieved by Co-opting Two Independent Biosynthetic Pathways for Pollinator Attraction
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Xu, Haiyang; Bohman, Bjorn; Wong, Darren; Rodriguez Delgado, Claudia; Scaffidi, Adrian; Flematti, Gavin; Phillips, Ryan; Pichersky, Eran; Peakall, Rodney
Sexually deceptive orchids lure their specific male pollinators using volatile semiochemicals that mimic female sex pheromones. To date, the semiochemicals known to be involved consist of blends of chemically and biosynthetically related compounds. In contrast, we report that (S)-β-citronellol and 2-hydroxy-6-methylacetophenone, two biosynthetically distinct compounds, are the active semiochemicals in Caladenia plicata, which is pollinated by male Zeleboria sp. thynnine wasps. They are also sex...[Show more]
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