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Spatiotemporal flor...
Spatiotemporal floral scent variation of Penstemon digitalis
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- Burdon, Rosalie C. F. (författare)
- Uppsala universitet,Växtekologi och evolution
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- Raguso, Robert A. (författare)
- Cornell Univ, Dept Neurobiol & Behav, Ithaca, NY 14853 USA.
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- Kessler, Andre (författare)
- Cornell Univ, Dept Ecol & Evolutionary Biol, Ithaca, NY 14853 USA.
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- Parachnowitsch, Amy L. (författare)
- Uppsala universitet,Växtekologi och evolution
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(creator_code:org_t)
- 2015-07-02
- 2015
- Engelska.
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Ingår i: Journal of Chemical Ecology. - : Springer Science and Business Media LLC. - 0098-0331 .- 1573-1561. ; 41:7, s. 641-650
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Variability in floral volatile emissions can occur temporally through floral development, during diel cycles, as well as spatially within a flower. These spatiotemporal patterns are hypothesized to provide additional information to floral visitors, but they are rarely measured, and their attendant hypotheses are even more rarely tested. In Penstemon digitalis, a plant whose floral scent has been shown to be under strong phenotypic selection for seed fitness, we investigated spatiotemporal variation in floral scent by using dynamic headspace collection, respectively solid-phase microextraction, and analyzed the volatile samples by combined gas chromatography-mass spectrometry. Total volatile emission was greatest during flowering and peak pollinator activity hours, suggesting its importance in mediating ecological interactions. We also detected tissue and reward-specific compounds, consistent with the hypothesis that complexity in floral scent composition reflects several ecological functions. In particular, we found tissue-specific scents for the stigma, stamens, and staminode (a modified sterile stamen common to all Penstemons). Our findings emphasize the dynamic nature of floral scents and highlight a need for greater understanding of ecological and physiological mechanisms driving spatiotemporal patterns in scent production.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- Diel variation
- Floral scent
- Nectar scent
- GC/MS
- S-(+)-linalool
- Pollen odor
- Staminode
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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