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Kikikose David Baracchi

Date(s)

le 17 novembre 2022

12h45
Lieu(x)
Ce kikikose aura lieu dans la salle de séminaire de l'IRBI et sur Teams

"Neuroactive nectars and their effects on pollinator cognition"

Cette semaine, nous accueillons David Baracchi (University of Florence) invité par Fernando et Martin (INOV). Il nous présentera ses travaux sur "Neuroactive nectars and their effects on pollinator cognition".

The interaction between plants and pollinators commonly rests on a mutualistic exchange: plants invest in the production of nectar and pollen to reward pollinators who, in turn, sustain plant reproduction by vectoring their pollen to conspecific flowers. Pollinators naturally excel in cognitive abilities such as flower discrimination, reward evaluation, learning and memory. Despite their innate predilection for certain flower features, they exhibit rapid sensory learning that ensures a net gain of resources while foraging. From the plant’s perspective, building pollinators’ loyalty is a top priority. Far from being a simple reward rich in macronutrients such as sugars, lipids, and proteins, nectars are complex blends abundant in secondary metabolites. While the functional significance of these phytochemicals in nectar remains elusive, increasing evidence indicates that they can play a role in plant-pollinator interaction. Some nectar phytochemicals are neurotransmitters or neuromodulators able to pharmacologically impact, either positively or negatively, various cognitive functions, ultimately affecting pollinators’ feeding preference and foraging behaviour. The recent insights into plant-pollinator interactions raise many fascinating questions still waiting to be answered.