Incomplete synchrony of inflorescence scent and temperature patterns in  Arum maculatum  L. (Araceae)

Marotz-Clausen, Gertrud; Jürschik, Simone; Fuchs, Roman; Schäffler, Irmgard; Sulzer, Philipp; Gibernau, Marc; Dötterl, Stefan

doi:10.1016/j.phytochem.2018.07.001

Cited by 23 publications

(35 citation statements)

References 29 publications

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“…Many of the major compounds we identified (e.g. indole, p-cresol, 2-heptanone, β-citronellene, and three unnamed sesquiterpenes) have been previously reported in studies of A. maculatum floral odor (Diaz and Kite 2002;Chartier et al 2013;Marotz-Clausen et al 2018). Populations across Europe differed in their proportional emissions of VOCs in situ (PERMANOVA, R 2 = 0.38, Pr(>F) = 0.001).…”

Section: Balancing Selection and Temporal Heterogeneity In Pollinatorsmentioning

confidence: 55%

Within-species floral odor variation is maintained by spatial and temporal heterogeneity in pollinator communities

Szenteczki

Godschalx

Galmán

et al. 2020

Preprint

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Floral odor is a complex trait that mediates many biotic interactions, including pollination. While high intraspecific floral odor variation appears to be common, the ecological and evolutionary drivers of this variation are often unclear. Here, we investigated the influence of spatially and temporally heterogeneous pollinator communities on floral odor variation in Arum maculatum (Araceae). Through Europe-wide field surveys, we identified high floral odor diversity and shifts in the dominant pollinator species within several A. maculatum populations compared to pollinator data from the same sites ten years ago. Using common-garden experiments, we further confirmed that inflorescences from native and foreign pollinator backgrounds were equally efficient at attracting local pollinators. The substantial within-population floral odor variation we observed may therefore be advantageous when facing temporally heterogeneous pollinator communities. We propose spatio-temporal heterogeneity in pollinators as one potential mechanism maintaining diverse floral odor bouquets in angiosperms.

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Section: Balancing Selection and Temporal Heterogeneity In Pollinatorsmentioning

confidence: 55%

Within-species floral odor variation is maintained by spatial and temporal heterogeneity in pollinator communities

Szenteczki

Godschalx

Galmán

et al. 2020

Preprint

Self Cite

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“…Thermogenesis occurs widely among both gymnosperms and angiosperms, including species of cycads (e.g. Zamiaceae) pollinated by thrips [101] and beetles [102], and species of Araceae pollinated by beetles and flies [103,104]. While it is difficult to isolate heat stimulus from other stimuli to afford importance of floral heating as a pollinator attraction mechanism, it has been proposed that nectar-feeding insects with the capacity to detect infrared (IR) thermal radiation (e.g.…”

Section: Thermogenic Sensitivitymentioning

confidence: 99%

Nocturnal pollination: an overlooked ecosystem service vulnerable to environmental change

Macgregor

Scott-Brown

2020

Emerging Topics in Life Sciences

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Existing assessments of the ecosystem service of pollination have been largely restricted to diurnal insects, with a particular focus on generalist foragers such as wild and honey bees. As knowledge of how these plant-pollinator systems function, their relevance to food security and biodiversity, and the fragility of these mutually beneficial interactions increases, attention is diverting to other, less well-studied pollinator groups. One such group are those that forage at night. In this review, we document evidence that nocturnal species are providers of pollination services (including pollination of economically valuable and culturally important crops, as well as wild plants of conservation concern), but highlight how little is known about the scale of such services. We discuss the primary mechanisms involved in night-time communication between plants and insect pollen-vectors, including floral scent, visual cues (and associated specialized visual systems), and thermogenic sensitivity (associated with thermogenic flowers). We highlight that these mechanisms are vulnerable to direct and indirect disruption by a range of anthropogenic drivers of environmental change, including air and soil pollution, artificial light at night, and climate change. Lastly, we highlight a number of directions for future research that will be important if nocturnal pollination services are to be fully understood and ultimately conserved.

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“…The scent of P. communis strongly differs from the scent of other crop plants, though some of the compounds identified in pear do also occur in other crop species. Apple (Malus × domestica) flowers, for example, which are very similar in morphology as pear flowers (MacDaniels 1940), overlap with pear flowers in linalool and (E)-β-ocimene, whereas all other compounds found in pear (Table 1) and apple (e.g., benzyl alcohol, and benzaldehyde) are only found in the respective species (Loughrin et al 1990;Baraldi et al 1999;Bengtsson et al 2001). Some overlap also exists between pear and wild cherries (Prunus avium), as flowers of both species emit linalool, methyl benzoate, 4-oxoisophorone, lilac aldehydes, and alcohols (El-Sayed et al 2018; Table 1).…”

Section: Discussionmentioning

confidence: 99%

Flowers of European pear release common and uncommon volatiles that can be detected by honey bee pollinators

et al. 2019

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Floral scents are important pollinator attractants, but there is limited knowledge about the importance of single components in plant-pollinator interactions. This especially is true in crop pollination systems. The aim of this study is to identify floral volatiles of several European pear cultivars (Pyrus communis L.), and to determine their potential in eliciting physiological responses in antennae of honey bees (Apis mellifera L.), the most important pollinators of pear. Volatiles were collected by dynamic headspace and analysed by (high resolution) gas chromatography coupled to mass spectrometry (GC/MS) and nuclear magnetic resonance spectroscopy. Antennal responses were investigated by GC coupled to electroantennographic detection (GC/EAD). We trapped in the mean 256 ng of scent per flower and hour (flower −1 h −1) from the different cultivars with either linalool + methyl benzoate or methyl 2-hydroxy-3-methylpentanoate as most abundant compounds. Of the 108 detected pear floral scent components, 17 were electrophysiologically active in honey bee antennae. Among these compounds were (E)-N-(2-methylbutyl)-and (E)-N-(3-methylbutyl)-1-(pyridin-3-yl)methanimine, which were not known from nature before to the best of our knowledge. Most other compounds identified as flower scent in pear are widespread compounds, known from flowers of various other species. Our results provide new insights in the floral volatile chemistry of an important insect-pollinated crop and show for the first time that honey bees have the olfactory ability to detect several pear floral volatiles. These data are an important basis for more detailed studies of the olfactory communication between honey bees and European pear flowers and might in the long term be used to manipulate the attractiveness of pear to obtain optimal fruit set.

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Incomplete synchrony of inflorescence scent and temperature patterns in Arum maculatum L. (Araceae)

Cited by 23 publications

References 29 publications

Within-species floral odor variation is maintained by spatial and temporal heterogeneity in pollinator communities

Within-species floral odor variation is maintained by spatial and temporal heterogeneity in pollinator communities

Nocturnal pollination: an overlooked ecosystem service vulnerable to environmental change

Flowers of European pear release common and uncommon volatiles that can be detected by honey bee pollinators

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