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Ionotropic receptors mediate olfactory learning and memory in Drosophila

Insect Science 2024年第4期31卷 1249-1269页

作者： Md Zeeshan Ali Anushree Aarif ahsan Mohammad Shamsul Ola Rizwanul Haque jawaid ahsan Department of Biotechnology Central University of South BiharGayaBiharIndia Department of Radiation Oncology University of MichiganAnn ArborMichiganUSA Department of Biochemistry College of ScienceKing Saud UniversityRiyadhSaudi Arabia

Phenylacetaldehyde(PAH),an aromatic compound,is present in a diverse range of fruits including overripe bananas and prickly pear cactus,the two major host fruits for Drosophila *** acts as a potent ligand for the ionotropic receptor 84a(IR84a)in the adult fruit fly and it is detected by the IR84a/IR8a heterotetrameric *** role in the male courtship behavior through IR84a as an environmental aphrodisiac is of additional *** ***,two distinct kinds of olfactory receptors,that is,odorant receptors(ORs)and ionotropic receptors(IRs),perceive the odorant *** display unique structural,molecular,and functional characteristics in addition to having different evolutionary ***,olfactory cues detected by the ORs such as ethyl acetate,1-butanol,isoamyl acetate,1-octanol,4-methylcyclohexanol,*** as aliphatic esters and alcohols have been employed in olfactory classical conditioning using fruit *** underlines the participation of OR-activated olfactory pathways in learning and memory *** study elucidates that likewise ethyl acetate(EA)(an OR-responsive odorant),PAH(an IR-responsive aromatic compound)too can form learning and memory when associated with an appetitive gustatory *** association of PAH with sucrose(PAH/SUC)led to learning and formation of the long-term memory(LTM).Additionally,the Orco^(1),Ir84a^(MI00501),and Ir8a^(1)mutant flies were used to confirm the exclusive participation of the IR84a/IR8a complex in PAH/SUC olfactory associative *** results highlight the involvement of IRs via an IR-activated pathway in facilitating robust olfactory behavior.

关键词： appetitive conditioning Drosophila melanogaster ethyl acetate ionotropic receptors learning and memory phenylacetaldehyde

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Physical, Thermal and Mechanical Properties of Areca Fibre Reinforced Polymer Composites – An Overview

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Journal of Bionic Engineering 2020年第1期17卷 185-205页

作者： Tamil Moli Loganathan Mohamed Thariq Hameed Sultan Mohammad jawaid Ain Umaira Md Shah Qumrul ahsan Manohar Mariapan Mohd Shukry bin Abdul Majid Department of Aerospace Engineering Faculty of EngineeringUniversiti Putra Malaysia43400 UPM SerdangSelangor Darul EhsanMalaysia Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400 UPM SerdangSelangor Darul EhsanMalaysia Aerospace Malaysia Innovation Centre(944751-A) Prime Minister's DepartmentMIGHT Partnership HubJalan Impact63000 CyberjayaSelangor Darul EhsanMalaysia Faculty of Manufacturing Engineering Universiti Teknikal Malaysia MelakaHang Tuah Jaya76100 Durian TunggalMelakaMalaysia Department of Science Park and Recreation Faculty of ForestryUniversiti Putra Malaysia43400 UPM SerdangSelangor Darul EhsanMalaysia School of Mechatronic Engineering Universiti Malaysia PerlisPauh Putra Campus02600 ArauPerlisMalaysia

Areca catechu,is a species of palm belonging to the family of Arecaceae/Palmae,grows vertically,to the height of 10 m to 20 m,the stem is straight,solitary and slender,10 cm to 15 cm in diameter,with marks of annulated scars of fallen leaf *** fibres are predominantly extracted not only from the fruit as areca husk,but also from leaf stalks and *** this review paper,areca fibre is compared with those of other representative species of the Arecaceae/Palmae family,such as the coconut tree and the palm tree,in terms of physical and mechanical *** review article also discusses the physical,mechanical and thermal properties of areca fibre and its *** review of known published data reveals that,while areca fibre has the potential to be used as an alternative reinforcement in polymer ***,it has been also noticed that some other species from the family of Arecaceae/Palmae have not been explored as natural fibre reinforcement in polymer composites either,thus revealing further options of natural alternative reinforcement to be investigated with regard to their potential to be used in fibre based composites for the automotive,aerospace,and construction industries.

关键词： natural fibres areca mechanical properties surface treatment hybrid composites

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