Pollination Biology and the Impact of Floral Display, Pollen Donors, and Distyly on Seed Production in <i>Arcytophyllum lavarum</i> (Rubiaceae)

García‐Robledo, Carlos; Mora, Floribeth

doi:10.1055/s-2007-964962

Cited by 14 publications

(6 citation statements)

References 55 publications

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“…However, high variability in the contribution of Fagopyrum pollen in honey could be owing to the fact there are two types of flowers on buckwheat, which do not have the same flow of pollen and nectar [36]. Different pollen flow for distylous species was already noted for the plants from Rubiaceae family [37]. Bees collect pollen to obtain many proteins, minerals and lipids they cannot find in nectar [32].…”

Section: Melissopalynology Analysismentioning

confidence: 99%

Polyphenol profile of buckwheat honey, nectar and pollen

et al. 2020

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A focus of research in recent years is the comparison of honey as the final product of bees with pollen and nectar of the plant from which the honey originates, as the main food source for bees. Buckwheat honey is recognized as a nutritionally valuable product, which provides a scientifically proven health benefit and is confirmed as a functional food. The quality of this type of honey is attributed to high levels of phytochemicals in buckwheat. The purpose of this study was the examination of similarity between buckwheat honey and buckwheat nectar and pollen, as well as simultaneous investigation of their chemical profiles and the origin of the honey. The phenolic profile of buckwheat pollen showed a lower number of flavonoids and phenolic acids than those of nectar and honey samples, but confirmed the presence of the most characteristic polyphenols derived from the buckwheat plant. The notable difference was found to be the presence of (epi)catechin units, its galloylated derivatives and procyanidin dimers, which were not present in honey. Honey polyphenols displayed a pronounced correlation with those of nectar, but not with those of pollen. Finally, by comparing the polyphenolic profiles of honey, nectar and pollen sharing the same geographical origin, new data could be provided for a potential assessment of the botanical origin of buckwheat honey.

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Section: Melissopalynology Analysismentioning

confidence: 99%

Polyphenol profile of buckwheat honey, nectar and pollen

et al. 2020

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“…Flowers of C. stenantha do not offer such rewards but may attract food-seeking Scatopsidae to its trap flowers by emitting reward-indicating aromatic components commonly found in rewarding flowers. Scatopsidae are known to visit such flowers to feed on pollen and/or nectar (Apiaceae: Haenni 1997 ; Asteraceae: Haenni 1990 ; Honěk et al 2016 ; Dipsacaceae: Haenni 1984 ; Rubiaceae: García-Robledo and Mora 2007 ) and probably use chemical cues to find them. Food deception through signals that indicate a reward/rewarding species is a well-studied strategy with different facets, e.g., Batesian mimicry and generalized food deception (see Johnson and Schiestl 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…Scatopsidae are scavengers or detritivores in larval stages (Freeman 1985 ; Haenni and Vaillant 1994 ; Haenni 1997 ) and are known to be associated with rotting organic material, such as fermenting leaf litter (Perez et al 2013 ). Scatopsidae are also described as nectar and pollen-feeding flower visitors (Larson et al 2001 ; García-Robledo and Mora 2007 ; Woodcock et al 2014 ). One of the non-native pollinator species of Ceropegia stenantha , i.e., the oyster mushroom fly Coboldia fuscipes (Meigen 1830), is famous for being a pest insect of economic importance.…”

Section: Introductionmentioning

confidence: 99%

Flower scent of Ceropegia stenantha: electrophysiological activity and synthesis of novel components

Heiduk

Haenni²,

Meve

et al. 2019

J Comp Physiol A

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In specialized pollination systems, floral scents are crucial for flower–pollinator communication, but key volatiles that attract pollinators are unknown for most systems. Deceptive Ceropegia trap flowers are famous for their elaborate mechanisms to trap flies. Recent studies revealed species-specific floral chemistry suggesting highly specialized mimicry strategies. However, volatiles involved in fly attraction were until now identified in C. dolichophylla and C. sandersonii , only. We here present data on C. stenantha for which flower scent and pollinators were recently described, but volatiles involved in flower–fly communication stayed unknown. We performed electrophysiological measurements with scatopsid fly pollinators ( Coboldia fuscipes ) and identified 12 out of 13 biologically active floral components. Among these volatiles some were never described from any organism but C. stenantha . We synthesized these components, tested them on antennae of male and female flies, and confirmed their biological activity. Overall, our data show that half of the volatiles emitted from C. stenantha flowers are perceived by male and female fly pollinators and are potentially important for flower–fly communication in this pollination system. Further studies are needed to clarify the role of the electrophysiologically active components in the life of scatopsid fly pollinators, and to fully understand the pollination strategy of C. stenantha .

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“…In contrast, less is known about the influence of floral display, in terms of morphological and colour differences, on the reproductive success of the morphs (Brys et al . ; García‐Robledo & Mora ; Brys & Jacquemyn ), or the influence of floral fragrances for the pollination of the floral morphs (Ashman ).…”

Section: Introductionmentioning

confidence: 99%

The function of the floral corona in the pollination of a Mediterranean style dimorphic daffodil

et al. 2017

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Narcissus papyraceus is a style dimorphic species with two floral forms, with anthers at similar height and stigmas above (long-styled L) and below (short-styled S) the anther level. The species is self-incompatible, but intra- and inter-morph compatible. Populations are either dimorphic (including both morphs) in the region of the Strait of Gibraltar, or L-monomorphic (with only L plants) in the inland of the Iberian Peninsula. This variation correlates with the most common floral visitors, being primarily long-tongued and short-tongued pollinators, respectively, a rare condition in Mediterranean plants. The maintenance of S-flowers relies on long-tongued insects, as only those deliver pollen to short-styled stigmas. Narcissus flowers present a long and narrow tube, at the bottom of which nectar accumulates, and a floral corona, which has been proposed as an important trait for the attraction of pollinators. Here we tested the importance of the corona on pollination of L and S flowers. We described UV reflectance patterns of the corona and tepals, and characterised VOCs in intact flowers and flowers with trimmed coronas. We also conducted a field experiment in the dimorphic and monomorphic region to estimate the importance of corona removal on seed production in stands with solitary plants and in groups to control for compatible pollen limitation. Reflectance was higher in the tepals than the corona, although both traits presented a reflectance peak around 450 nm wavelength. L- and S-flowers produced similar volatiles, regardless of the manipulation of the corona. Across dimorphic and monomorphic regions, S-flowers with the corona removed suffered a reduction in seed production of ca. 50%, while seed production remained similar in L flowers both with the corona intact and removed. Plants in solitary stands suffered a strong reduction in seed production, which was more pronounced in the monomorphic region. Our results suggest that the corona in Narcissus is more important for the pollination of S-flowers, which generally have lower seed production compared to L-flowers. Taken together, these results suggest that the floral corona indirectly plays an important role for maintenance of the polymorphism.

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Pollination Biology and the Impact of Floral Display, Pollen Donors, and Distyly on Seed Production in Arcytophyllum lavarum (Rubiaceae)

Cited by 14 publications

References 55 publications

Polyphenol profile of buckwheat honey, nectar and pollen

Polyphenol profile of buckwheat honey, nectar and pollen

Flower scent of Ceropegia stenantha: electrophysiological activity and synthesis of novel components

The function of the floral corona in the pollination of a Mediterranean style dimorphic daffodil

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