Sugar and Polyphenolic Diversity in Floral Nectar of Cherry

Akšić, Milica Fotirić; Čolić, S.; Meland, Mekjell; Natić, Maja

doi:10.1007/978-3-319-76887-8_8-1

Cited by 5 publications

(4 citation statements)

References 91 publications

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“…Furthermore, we have shown for the first time that AmGr1 is directly involved in the evaluation of sucrose, glucose (Figure 1) and maltose at the behavioural level but not in the perception of fructose or arabinose (Supplementary Figure S4). Maltose is found in both honeydew and nectars of many plants, whereas arabinose seems to be present only in traces (Wykes, 1952;Manzanares et al, 2011;Akšić et al, 2020). The substrate specificity of AmGr1 for sucrose, glucose, maltose, trehalose and melezitose (rather than arabinose) might reflect the natural occurrence of these sugars in honeybee resources or in its haemolymph sugar.…”

Section: Discussionmentioning

confidence: 99%

Sugar perception in honeybees

et al. 2023

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Honeybees (Apis mellifera) need their fine sense of taste to evaluate nectar and pollen sources. Gustatory receptors (Grs) translate taste signals into electrical responses. In vivo experiments have demonstrated collective responses of the whole Gr-set. We here disentangle the contributions of all three honeybee sugar receptors (AmGr1-3), combining CRISPR/Cas9 mediated genetic knock-out, electrophysiology and behaviour. We show an expanded sugar spectrum of the AmGr1 receptor. Mutants lacking AmGr1 have a reduced response to sucrose and glucose but not to fructose. AmGr2 solely acts as co-receptor of AmGr1 but not of AmGr3, as we show by electrophysiology and using bimolecular fluorescence complementation. Our results show for the first time that AmGr2 is indeed a functional receptor on its own. Intriguingly, AmGr2 mutants still display a wildtype-like sugar taste. AmGr3 is a specific fructose receptor and is not modulated by a co-receptor. Eliminating AmGr3 while preserving AmGr1 and AmGr2 abolishes the perception of fructose but not of sucrose. Our comprehensive study on the functions of AmGr1, AmGr2 and AmGr3 in honeybees is the first to combine investigations on sugar perception at the receptor level and simultaneously in vivo. We show that honeybees rely on two gustatory receptors to sense all relevant sugars.

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Section: Discussionmentioning

confidence: 99%

Sugar perception in honeybees

et al. 2023

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“…The nectar of sweet cherry is rich in sugars (from 28% to 55% sugar), the most abundant of which are fructose, glucose and sucrose, which are highly attractive to pollinating insects, including bees [22]. It is well known that insect-mediated pollination in sweet cherry is important for the production of a viable crop and besides the environmental conditions, pollinating insects are the most important factor governing yield [23].…”

Section: Cherry Flower Pollinationmentioning

confidence: 99%

Fruit Development in Sweet Cherry

Vignati

Lipska

Dunwell

et al. 2022

Plants

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Fruits are an important source of vitamins, minerals and nutrients in the human diet. They also contain several compounds of nutraceutical importance that have significant antioxidant and anti-inflammatory roles, which can protect the consumer from diseases, such as cancer, and cardiovascular disease as well as having roles in reducing the build-up of LDL-cholesterol in blood plasma and generally reduce the risks of disease and age-related decline in health. Cherries contain high concentrations of bioactive compounds and minerals, including calcium, phosphorous, potassium and magnesium, and it is, therefore, unsurprising that cherry consumption has a positive impact on health. This review highlights the development of sweet cherry fruit, the health benefits of cherry consumption, and the options for increasing consumer acceptance and consumption.

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“…Indeed, over the two seasons, pollen from 15 different species was identified. Cherry floral resources are known to be rich in carbohydrates but lacking in protein; hence, prolonged restriction to the crop could cause nutritional issues (Akšić et al, 2018;Donkersley et al, 2017). It is therefore likely that the disadvantages of reduced cherry pollen transfer are far outweighed by the overall benefits of a mixed diet, as poor nutrition can result in stressed colonies with lower individual lifespans, less brood, reduced populations, higher pathogen loads and behavioural changes (Branchiccela et al, 2019).…”

Section: Ta B L Ementioning

confidence: 99%

Quantifying the impact of crop coverings on honey bee orientation and foraging in sweet cherry orchards using RFID

Warren,

Colin,

Quarrell

et al. 2024

J Applied Entomology

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Advancements in agricultural production have seen the rapid adoption of protected cropping systems globally. Such systems have been optimized for plant growth and efficiency, with little understanding of the potential impacts to key insect pollinators. Here, we investigate the effect of bird netting and polythene rain covers on the health and performance of honey bees (Apis mellifera L.) during the pollination of sweet cherry crops. Over two consecutive seasons, 12 full‐strength colonies were equipped with tagged bees and radio frequency identification (RFID) systems. The colonies were equally divided between open control, bird netted and polythene (semi‐permanent VOEN in 2019 and retractable Cravo in 2020) groups. Over 1300 individual bees were monitored for the duration of the commercial pollination period to determine behavioural parameters such as foraging commencement age, number and duration of trips and overall survival. Bees began foraging within the optimum age range (mean 15.7–24.1 days) under all covering types, with little indication of prolonged stress or increased mortality during the short season. Polythene covers (VOEN & Cravo) were found to significantly increase the total time needed for bees to orientate successfully. Once orientated, bees placed under covers conducted up to 155% more foraging trips, with a longer cumulative duration. Covering type was found to significantly impact the amount and type of pollen collected, with the most restrictive system (VOEN) yielding the highest proportion of cherry pollen. Overall, we found little evidence to suggest that the tested protective covers have a detrimental impact to honey bee foraging in cherry crops.

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Sugar and Polyphenolic Diversity in Floral Nectar of Cherry

Cited by 5 publications

References 91 publications

Sugar perception in honeybees

Sugar perception in honeybees

Fruit Development in Sweet Cherry

Quantifying the impact of crop coverings on honey bee orientation and foraging in sweet cherry orchards using RFID

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