Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Hydrocarbon patterns in Cleisostoma scolopendrifolium (Orchidaceae) as a key mechanism for pollination

  • SON, Hyun-Deok (Ministry of Environment) ;
  • YUN, Seon A (Department of Environmental and Forest Biology, State University of New York) ;
  • KIM, Seung-Chul (Department of Biological Sciences, Sungkyunkwan University) ;
  • IM, Hyoung-Tak (Department of Biological Sciences, Chonnam National University)
  • Received : 2020.05.06
  • Accepted : 2020.06.24
  • Published : 2020.06.30
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Abstract

Cleisostoma scolopendrifolium is an orchid species solely pollinated by the male bee Megachile yasumatsui. Although C. scolopendrifolium is an endangered species in Korea, little is known about its pollination mechanisms or the profiles of its chemical attractants. This study provides evidence that the Cleisostoma orchid attracts male bees as pollinators by mimicking female mating signals. We found 13 hydrocarbons in the Cleisostoma orchid flower presumed to be involved in sex pheromone mimicry: five alkanes (tricosane, pentacosane, heptacosane, nonacosane, and hentriacontane), compounds of cuticular hydrocarbons which function as chemical cues for the recognition of mates and species in social insects; and eight alkenes ((z)-9-tricosene, (z)-9-pentacosene, (z)-11-pentacosene, (z)-9-heptacosene, (z)-11-heptacosene, (z)-9-nonacosene, (z)-11-nonacosene, and (z)-11-hentriacontene) which serve as sex pheromones in several insects. We suggest that these hydrocarbons play a key role in the pollination mechanism between Cleisostoma orchids and Megachile bees.

Keywords

References

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