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To be or not to be fragrant: floral scent of some bat‐pollinated cacti

Albuquerque‐Lima, S. ; Milet‐Pinheiro, P. ; Navarro, D. M. A. F. ; Taylor, N. P. ; Zappi, D. C. ; Machado, I. C.

Plant biology (Stuttgart, Germany), 2024-01, Vol.26 (1), p.28-33 [Periódico revisado por pares]

England

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  • Título:
    To be or not to be fragrant: floral scent of some bat‐pollinated cacti
  • Autor: Albuquerque‐Lima, S. ; Milet‐Pinheiro, P. ; Navarro, D. M. A. F. ; Taylor, N. P. ; Zappi, D. C. ; Machado, I. C.
  • Assuntos: Animals ; Cactaceae ; Chiroptera ; Chiropterophily ; Coleocephalocereus ; Flowers - chemistry ; Odorants - analysis ; olfactory cues ; Perfume - analysis ; Pheromones ; Pollination ; Stephanocereus ; sulphur compounds
  • É parte de: Plant biology (Stuttgart, Germany), 2024-01, Vol.26 (1), p.28-33
  • Notas: ObjectType-Case Study-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-4
    ObjectType-Report-1
    ObjectType-Article-3
  • Descrição: Floral scent is a key olfactory cue in both diurnal and nocturnal pollination systems. In the case of nocturnal systems, such as bat‐pollinated flowers, odour seems to play a more important role than visual cues. Cactaceae include many bat‐pollinated species; however, few studies have investigated the olfactory cues in this family. We analysed and compared the chemical composition of the floral bouquet of three chiropterophilous cactus species, among which are a pair of congeners that differ considerably in scent intensity. Our research presents novel findings regarding the floral scent chemistry of chiropterophilous cactus species. We documented the first case of a bat‐pollinated cactus whose flowers lack perceptible floral scent and in which no volatile compounds were detected in our chemical analyses. Additionally, we provide a comprehensive analysis of the chemical composition of the floral bouquet of the other two bat‐pollinated species, revealing a resemblance among closely related species within the same genus. We highlight the need for further studies using biotests to investigate the mechanisms through which bats find flowers lacking scent. The first chiropterophilous ‐ bat‐pollinated‐ cactus with scentless flowers is documented, whereas related species do have complex floral bouquets, which compositions have been chemically analysed comprehensively in this study.
  • Editor: England
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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