Comparative analysis of floral scents in four sympatric species of Serapias L. (Orchidaceae): clues on their pollination strategies

Pellegrino, G.; Luca, A.; Bellusci, F.; Musacchio, A.
December 2012
Plant Systematics & Evolution;Dec2012, Vol. 298 Issue 10, p1837
Academic Journal
Orchid species of Mediterranean genus Serapias often live in sympatry, exhibit similar floral morphology, bloom in the same period and share the same pollinators. Previous studies on Serapias species have ascertained that reproductive isolation is based on pre-pollination barriers, that secretory cells and trichomes are typically distributed on the floral labellum and that flowers produce aliphatic compounds. In this study we compare the floral scent composition of four widespread, co-occurring Serapias species, namely Serapias lingua, Serapias parviflora, Serapias vomeracea and Serapias cordigera. Our goals are to assess if differences in floral scent may act as interspecific pre-pollination barriers and if these olfactory signals may be involved in the pollination strategy of Serapias. We find that all the selected species produce C20-C29 alkanes and alkenes and, in addition, have detected the presence in S. cordigera of large amounts of oleate and stearate ethyl ester. Our findings help to clarify that the sympatric Serapias species have slightly different floral scent signatures that may account for their relevant role as pre-pollination barriers. Therefore, the pollination strategy of Serapias relies not only on the tubular shape of their floral corolla but also on the production of olfactory signals that may lure potential pollinators and even assure a sufficient degree of pollinator fidelity.


Related Articles

  • A generalized deceptive pollination system of Doritis pulcherrima (Aeridinae: Orchidaceae) with non-reconfigured pollinaria.  // BMC Plant Biology;2012, Vol. 12 Issue 1, p67 

    The article offers information on the research conducted by the authors related to deceptive pollination system of Doritis pulcherrima or orchids. It states that orchid pollination promotes cross-pollination are pollinarium reconfiguration (PR) and deceptive pollination. PR refers to the change...

  • A comparative survey of floral characters in Capanemia Barb. Rodr. (Orchidaceae: Oncidiinae). Buzatto, Cristiano Roberto; Davies, Kevin L.; Singer, Rodrigo B.; Pires dos Santos, Rinaldo; van den Berg, Cássio // Annals of Botany;Jan2012, Vol. 109 Issue 1, p135 

    Background and Aims Capanemia Barb. Rodr. comprises seven species that mostly inhabit the Brazilian Atlantic Rain Forest domain. The genus currently consists of two sections: Capanemia Cogn. and Planifolia Pabst, distinguished on the basis of leaf shape. We compare the floral morphology and...

  • Bird Pollination in an Angraecoid Orchid on Reunion Island (Mascarene Archipelago, Indian Ocean). MICHENEAU, CLAIRE; FOURNEL, JACQUES; PAILLER, THIERRY // Annals of Botany;Jun2006, Vol. 97 Issue 6, p965 

    • Background and Aims Although numerous angraecoid orchids in Madagascar display typical sphingophilous syndrome (i.e. white, nectariferous, long-spurred flowers, producing a strong scent at the crepuscule that is attractive to moths), three species of Angraecum in Reunion, belonging to...

  • On the additive version of the connectivity index. Nikolic, Sonja; Trinajstic, Nenad; Turk, Sanja Ivanisˇ // AIP Conference Proceedings;Dec2012, Vol. 1504 Issue 1, p342 

    A novel version of the Randic connectivity index that we call the product-connectivity index, named the sumconnectivity index, is tested on modeling retention indices of lower alkanes and cycloalkanes. The model obtained based on the sum-connectivity index is compared to the model based on the...

  • Increased divergence in floral morphology strongly reduces gene flow in sympatric sexually deceptive orchids with the same pollinator. Gögler, Julia; Stökl, Johannes; Cortis, Pierluigi; Beyrle, Heinrich; Barone Lumaga, Maria; Cozzolino, Salvatore; Ayasse, Manfred // Evolutionary Ecology;Sep2015, Vol. 29 Issue 5, p703 

    In sexually deceptive orchids, pollinator specificity is the main factor responsible for species isolation. The two sexually deceptive orchids Ophrys chestermanii and Ophrys normanii occur sympatrically on Sardinia and attract the same pollinator, males of Bombus vestalis, by producing the same...

  • Comparative labellar micromorphology of Zygopetalinae (Orchidaceae). Davies, Kevin L.; Stpiczyńska, Malgorzata // Annals of Botany;Oct2011, Vol. 108 Issue 5, p945 

    Background and Aims Molecular evidence indicates that the Neotropical sub-tribe Zygopetalinae is sister to Maxillariinae. Most members of the latter sub-tribe have deceit pollination strategies, but some species produce rewards such as nectar, pseudopollen, resin and wax, and are pollinated by a...

  • Differences in dichogamy and herkogamy contribute to higher selfing in contrasting environments in the annual Blackstonia perfoliata (Gentianaceae). Brys, Rein; Geens, Bram; Beeckman, Tom; Jacquemyn, Hans // Annals of Botany;Apr2013, Vol. 111 Issue 4, p651 

    Background and Aims The establishment of plant populations in novel environments may generate pronounced shifts in floral traits and plant mating systems, particularly when pollinators are scarce. In this study, floral morphology and mating system functioning are compared between recently...

  • Are deception-pollinated species more variable than those offering a reward? Ackerman, James; Cuevas, Ana; Hof, David // Plant Systematics & Evolution;May2011, Vol. 293 Issue 1-4, p91 

    In most pollination systems, animals transfer pollen among plants of a given species. Pollinator visitations do not come without cost, so plants usually offer a reward. However, the flowers of some plant species, mostly orchids, lack rewards and deceive animals into visiting their flowers....

  • Equation of state of model branched alkanes: Theoretical predictions and configurational bias Monte Carlo simulations. MacDowell, Luis G.; Vega, Carlos; Sanz, Eduardo // Journal of Chemical Physics;10/1/2001, Vol. 115 Issue 13 

    We develop a general configurational bias Monte Carlo algorithm for the simulation of branched alkanes and compare the results with predictions from theoretical equations of state. We consider results for all the hexane isomers, as well as for several heptane and octane isomers. The interaction...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics