Host selection by thrips is affected by the floral volatile profile of sunflower

Plant Cell & Environment, Год журнала: 2024, Номер 47(11), С. 4354 - 4368

Опубликована: Июль 5, 2024

Thrips, Frankliniella intonsa, is a highly polyphagous pest with worldwide distribution. F. intonsa-infested sunflower seeds show marked visual damage. The study findings revealed that significantly more intonsa infested confection compared to oilseed sunflower, via olfactometer bioassay studies, we found the flower and pollen of sunflowers, those sunflowers attract intonsa. Considering this discrepancy in preference on volatiles pollens two were analysed by gas chromatography-mass spectroscopy. behavioural responses assessed for these compounds using Y-tube bioassays. Geranyl bromide, unique volatile component induced an assertive approach-avoidance behaviour whereas ethyl isovalerate attracted adults demonstrated significant attraction blends sunflowers. Furthermore, field verification intercropping could effectively control provided insights into chemical cues used locating hosts. Therefore, can be as repellent plants prevent invasion.

Язык: Английский

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Advancements and Future Prospects of CRISPR-Cas-Based Population Replacement Strategies in Insect Pest Management

Insects, Год журнала: 2024, Номер 15(9), С. 653 - 653

Опубликована: Авг. 30, 2024

Population replacement refers to the process by which a wild-type population of insect pests is replaced possessing modified traits or abilities. Effective necessitates gene drive system capable spreading desired genes within natural populations, operating under principles akin super-Mendelian inheritance. Consequently, releasing small number genetically edited insects could potentially achieve control objectives. Currently, several approaches are exploration, including newly adapted CRISPR-Cas genome editing system. Multiple studies investigating methods engineer that incapable causing crop damage transmitting vector-borne diseases, with notable successful examples documented. This review summarizes recent advancements in realm and provides insights into research methodologies, testing protocols, implementation strategies for techniques. The also discusses emerging trends prospects establishing genetic tools pest management.

Язык: Английский

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Harnessing Insect Chemosensory and Mechanosensory Receptors Involved in Feeding for Precision Pest Management

Life, Год журнала: 2025, Номер 15(1), С. 110 - 110

Опубликована: Янв. 16, 2025

Chemosensation and mechanosensation are vital to insects’ survival behavior, shaping critical physiological processes such as feeding, metabolism, mating, reproduction. During insects rely on diverse chemosensory mechanosensory receptors distinguish between nutritious harmful substances, enabling them select suitable food sources while avoiding toxins. These distributed across various body parts, allowing detect environmental cues about quality adjust their behaviors accordingly. A deeper understanding of insect sensory physiology, especially during not only enhances our knowledge biology but also offers significant opportunities for practical applications. This review highlights recent advancements in research feeding-related receptors, covering a wide range species, from the model organism Drosophila melanogaster agricultural human pests. Additionally, this examines potential targeting precision pest control. Disrupting feeding reproduction emerges promising strategy management. By interfering with these essential behaviors, we can effectively control populations minimizing impacts promoting ecological balance.

Язык: Английский

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Insights on the nutritional ecology of a nocturnal pollinating insect

Insect Science, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Nutritional ecology examines the environmental effects on nutritional needs, food intake and foraging behaviors, use of nutrients ingested by animals. Adults many insects' species feed nectars rich in sugars allowing them to match needs necessary for reproduction. Among insects, Lepidoptera are often considered opportunistic foragers that visit a wide variety available flowers, although with some preferences. While diurnal is beginning be explored, very little work focuses nocturnal because they complicated study wild. To address this, we used new laboratory approaches feeding behaviors (number duration visits artificial preferences associated texture odors flowers) as well gustatory detection antennae (proboscis extension reflex) male crop pest moth Agrotis ipsilon. We showed (i) responsiveness age-dependent increases mainly sugar quantity marginally quality, (ii) diet quality impacts first days adulthood, (iii) moths choose their through floral cues. Taken together, these data allow define this generalist forager preference flowers sugary sucrose, fructose, glucose. Our results thus provide considerable information close links between sources species, which important guiding future studies behavioral ecology, population dynamics, monitoring regional management.

Язык: Английский

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Identification and function analysis of two new gustatory receptors related to silkworm monophagy

Insect Science, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Silkworm is a typical monophagous insect that can only feed on fresh mulberry leaves. The mechanism for this nature not fully understood. One bitter gustatory receptor (GR) GR66 located the maxilla of mouthpart has been reported to be an important factor influencing feeding preference silkworm. However, mutants nonhost plant was very low, suggesting other factors related silkworm monophagy need further explored. In study, 10 GRs were screened out based their specific high expression in silkworm, and 4 most expressed (GR15, GR43, GR69, GR66) knocked by clustered regularly interspaced short palindromic repeats (CRISPR) / CRISPR-associated nuclease 9. Feeding experiments showed except GR69-/-, host range GR43-/-, GR15-/-, GR66-/- expanded remarkably, both GR43-/- revealed highest plants. Moreover, strict leaves almost eliminated double mutant silkworms GR66-/-. These results imply it likely variety different are involved determining larvae. addition, GR15 mutation significantly inhibited ovarian development, resulting significant decrease oviposition. findings enhance our understanding provide possibility molecular breeding polyphagous future.

Язык: Английский

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HcGr76 responds to fructose and chlorogenic acid and is involved in regulation of peptide expression in the midgut of Hyphantria cunea larvae

Pest Management Science, Год журнала: 2024, Номер 80(11), С. 5672 - 5683

Опубликована: Июль 10, 2024

Sensing dietary components in the gut is important to ensure an appropriate hormonal response and metabolic regulation after food intake. The fall webworm, Hyphantria cunea, a major invasive pest China has led significant economic losses ecosystem disruption. larvae's broad host range voracious appetite for leaves make H. cunea primary cause of serious damage both forests crops. To date, however, gustatory receptors (Grs) their regulatory function remain largely unknown.

Язык: Английский

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Molecular Functions and Physiological Roles of Gustatory Receptors of the Silkworm Bombyx mori

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(18), С. 10157 - 10157

Опубликована: Сен. 21, 2024

Complete elucidation of members the gustatory receptor (Gr) family in lepidopteran insects began silkworm Bombyx mori. Grs were initially classified into four subfamilies based on results phylogenetic studies and analyses a few ligands. However, with further ligand analysis, it has become clear that plant secondary metabolites are important targets not only for bitter subfamily but also Drosophila melanogaster Gr43a orthologue sugar subfamily. Gene knockout experiments showed B. mori Gr6 (BmGr6) BmGr9 involved recognition feeding-promoting compounds chlorogenic acid isoquercetin mulberry leaves by maxillary palps, suggesting these responsible palpation-dependent host without biting. On other hand, BmGr expression was confirmed nonsensory organs. Midgut enteroendocrine cells produce specific neuropeptides shown to express BmGrs, BmGrs induction endocrine secretion response changes midgut contents. Furthermore, gene indicated BmGr6 is indeed myosuppressin. induce signal transduction derived from intracellular signaling cascade mediated G proteins fructose-regulated cation channel itself. Cryogenic electron microscopy revealed mechanism which ion homotetramer opens upon binding fructose ligand-binding pocket. Research contributed greatly our understanding functions roles insects.

Язык: Английский

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A bitter taste receptor liganded by oxalic acid inhibits brown planthopper feeding by promoting CREB phosphorylation via the PI3K-AKT signaling pathway

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 290, С. 138999 - 138999

Опубликована: Дек. 20, 2024

Язык: Английский

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