Latest Developments in Insect Sex Pheromone Research and Its Application in Agricultural Pest Management

Insects, Год журнала: 2021, Номер 12(6), С. 484 - 484

Опубликована: Май 23, 2021

Since the first identification of silkworm moth sex pheromone in 1959, significant research has been reported on identifying and unravelling mechanisms hundreds insect species. In past two decades, number studies new pheromones, biosynthesis, mode action, peripheral olfactory neural mechanisms, their practical applications Integrated Pest Management increased dramatically. An interdisciplinary approach that uses advances techniques analytical chemistry, chemical ecology, neurophysiology, genetics, evolutionary molecular biology helped us to better understand perception its application agricultural pest management. this review, we present most recent developments decades.

Язык: Английский

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Common principles for odour coding across vertebrates and invertebrates

Nature reviews. Neuroscience, Год журнала: 2024, Номер 25(7), С. 453 - 472

Опубликована: Май 28, 2024

Язык: Английский

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Large-scale characterization of sex pheromone communication systems in Drosophila

Nature Communications, Год журнала: 2021, Номер 12(1)

Опубликована: Июль 6, 2021

Abstract Insects use sex pheromones as a reproductive isolating mechanism to attract conspecifics and repel heterospecifics. Despite the profound knowledge of pheromones, little is known about coevolutionary mechanisms constraints on their production detection. Using whole-genome sequences infer kinship among 99 drosophilids, we investigate how phylogenetic chemical traits have interacted at wide evolutionary timescale. Through series syntheses electrophysiological recordings, identify 52 sex-specific compounds, many which are detected via olfaction. Behavioral analyses reveal that 43 male-specific compounds transferred female during copulation mediate receptivity and/or male courtship inhibition. Measurement signals demonstrates cognate olfactory channels evolve rapidly independently over time guarantee efficient intra- inter-specific communication systems. Our results show sexual isolation barriers between species can be reinforced by species-specific signals.

Язык: Английский

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Principles of odor coding in vertebrates and artificial chemosensory systems

Physiological Reviews, Год журнала: 2021, Номер 102(1), С. 61 - 154

Опубликована: Июль 13, 2021

The biological olfactory system is the sensory responsible for detection of chemical composition environment. Several attempts to mimic systems have led various artificial using different technical approaches. Here we provide a parallel description and their counterparts. We start with presentation input systems, stimuli, treat interface between external world environment where receptor neurons or chemosensors reside. then delineate functions as well overall input-output (I/O) relationships. Up this point, our accounts go along similar lines. next processing steps differ considerably: whereas in biology step following “integration” “processing” neuron outputs bulb, has realizations electronic noses. For long period time, signal stages beyond i.e., higher centers, were little studied. Only recently there been marked growth studies tackling information these centers. In noses, third stage virtually never considered. review, an up-to-date overview current knowledge both fields and, first attempt tie them together. hope it will be breeding ground better information, communication, data exchange very related but so far little-connected fields.

Язык: Английский

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Sparse and stereotyped encoding implicates a core glomerulus for ant alarm behavior

Cell, Год журнала: 2023, Номер 186(14), С. 3079 - 3094.e17

Опубликована: Июнь 15, 2023

Ants communicate via large arrays of pheromones and possess expanded, highly complex olfactory systems, with antennal lobes in the brain comprising up to ∼500 glomeruli. This expansion implies that odors could activate hundreds glomeruli, which would pose challenges for higher-order processing. To study this problem, we generated transgenic ants expressing genetically encoded calcium indicator GCaMP sensory neurons. Using two-photon imaging, mapped complete glomerular responses four ant alarm pheromones. Alarm robustly activated ≤6 activity maps three inducing panic our species converged on a single glomerulus. These results demonstrate that, rather than using broadly tuned combinatorial encoding, employ precise, narrowly tuned, stereotyped representations The identification central hub glomerulus behavior suggests simple neural architecture is sufficient translate pheromone perception into behavioral outputs.

Язык: Английский

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Evolution of connectivity architecture in the Drosophila mushroom body

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Июнь 7, 2024

Abstract Brain evolution has primarily been studied at the macroscopic level by comparing relative size of homologous brain centers between species. How neuronal circuits change cellular over evolutionary time remains largely unanswered. Here, using a phylogenetically informed framework, we compare olfactory three closely related Drosophila species that differ in their chemical ecology: generalists melanogaster and simulans sechellia specializes on ripe noni fruit. We examine central part circuit that, to our knowledge, not investigated these species—the connections projection neurons Kenyon cells mushroom body—and identify species-specific connectivity patterns. found encoding food odors connect more frequently with cells, giving rise biases connectivity. These differences reflect two distinct phenotypes: number or presynaptic boutons formed individual neurons. Finally, behavioral analyses suggest such increased enhances learning performance an associative task. Our study shows how fine-grained aspects architecture center can during ecology

Язык: Английский

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Multilayer regulation underlies the functional precision and evolvability of the olfactory system

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Sensory neurons must be reproducibly specified to permit accurate neural representation of external signals but also able change during evolution. We studied this paradox in the Drosophila olfactory system by establishing a single-cell transcriptomic atlas all developing antennal sensory lineages, including latent populations that normally undergo programmed cell death (PCD). This reveals transcriptional control is robust, imperfect, defining selective receptor expression. A second layer precision afforded intersection expression functionally-interacting subunits. third defined stereotyped PCD patterning, which masks promiscuous fated die and removes "empty" lacking receptors. Like choice, under lineage-specific control; promiscuity regulation leads previously-unappreciated heterogeneity neuronal numbers. Thus functional mature belies developmental noise might facilitate evolution pathways.

Язык: Английский

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A modular circuit coordinates the diversification of courtship strategies

Nature, Год журнала: 2024, Номер 635(8037), С. 142 - 150

Опубликована: Окт. 9, 2024

Mate recognition systems evolve rapidly to reinforce the reproductive boundaries between species, but underlying neural mechanisms remain enigmatic. Here we leveraged rapid coevolution of female pheromone production and male perception in Drosophila1,2 gain insight into how architecture mate circuits facilitates their diversification. While some Drosophila species females produce unique pheromones that act arouse conspecific males, most are sexually monomorphic such possess no distinguishing chemosensory signatures males can use for recognition3. We show yakuba evolved ability a pheromone, 7-tricosene, as an excitatory cue promote courtship. By comparing key nodes across multiple reveal this sensory innovation arises from coordinated peripheral central circuit adaptations: distinct subpopulation neurons has acquired sensitivity 7-tricosene and, turn, selectively signals subset P1 brain trigger Such modular organization, which different inputs independently couple parallel courtship control nodes, may facilitate evolution by allowing novel modalities become linked arousal. Together, our findings suggest adaptations be flexibly underlie strategies species. Peripheral Drosophila, organization

Язык: Английский

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Essential oils in grain storage: A comprehensive review of insecticidal and antimicrobial constituents, mechanisms, and applications for grain security

Journal of Stored Products Research, Год журнала: 2025, Номер 111, С. 102537 - 102537

Опубликована: Янв. 6, 2025

Язык: Английский

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Ancestral complexity and constrained diversification of the ant olfactory system

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2025, Номер 292(2045)

Опубликована: Апрель 1, 2025

Communication is a cornerstone of social living, allowing the exchange information to align goals and synchronize behaviour. Ants, group highly successful insects, have heightened olfactory abilities that are integral their evolutionary success. Essential for colony cohesion cooperation, female-specific subsystem processes about nestmate recognition cues (cuticular hydrocarbons), including basiconic sensilla on antenna cluster specific glomeruli in antennal lobe. While it has often been linked ants' lifestyle, origins phylogenetic distribution this system remain unknown. We conducted comparative exploration ant across eight major subfamilies, integrating neuroanatomical, chemical behavioural analyses. Our findings reveal sophistication deep roots. Moreover, lobe investment not associated with traits such as size, polygyny or foraging strategies, but correlates cuticular hydrocarbon profile complexity. Despite neuroanatomical differences, different species consistently excel discrimination, indicating adaptation diversity while maintaining reliable recognition. This suggests neuronal neuropil co-evolved sustain discrimination performance.

Язык: Английский

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