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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Floral scent changes in response to pollen removal are rare in buzz-pollinated Solanum
Author(s): Moore, C. Douglas
Farman, Dudley I.
Särkinen, Tiina
Stevenson, Philip C.
Vallejo-Marín, Mario
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Keywords: Chemical ecology
Concealed reward
Floral scent
Plant-pollinator signalling
Plant ecology
Poricidal flower
Volatile organic compound
Issue Date: Jul-2024
Date Deposited: 14-Jun-2024
Citation: Moore CD, Farman DI, Särkinen T, Stevenson PC & Vallejo-Marín M (2024) Floral scent changes in response to pollen removal are rare in buzz-pollinated Solanum. <i>Planta</i>, 260 (1), Art. No.: 15.
Abstract: Main conclusion One of seven Solanum taxa studied displayed associations between pollen presence and floral scent composition and volume, suggesting buzz-pollinated plants rarely use scent as an honest cue for foraging pollinators. Abstract Floral scent influences the recruitment, learning, and behaviour of floral visitors. Variation in floral scent can provide information on the amount of reward available or whether a flower has been visited recently and may be particularly important in species with visually concealed rewards. In many buzz-pollinated flowers, tubular anthers opening via small apical pores (poricidal anthers) visually conceal pollen and appear similar regardless of pollen quantity within the anther. We investigated whether pollen removal changes floral scent composition and emission rate in seven taxa of buzz-pollinated Solanum (Solanaceae). We found that pollen removal reduced both the overall emission of floral scent and the emission of specific compounds (linalool and farnesol) in S. lumholtzianum. Our findings suggest that in six out of seven buzz-pollinated taxa studied here, floral scent could not be used as a signal by visitors as it does not contain information on pollen availability.
DOI Link: 10.1007/s00425-024-04403-4
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