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https://www.readbyqxmd.com/read/29304168/comparative-genomics-of-chemosensory-protein-genes-csps-in-twenty-two-mosquito-species-diptera-culicidae-identification-characterization-and-evolution
#1
Ting Mei, Wen-Bo Fu, Bo Li, Zheng-Bo He, Bin Chen
Chemosensory proteins (CSP) are soluble carrier proteins that may function in odorant reception in insects. CSPs have not been thoroughly studied at whole-genome level, despite the availability of insect genomes. Here, we identified/reidentified 283 CSP genes in the genomes of 22 mosquitoes. All 283 CSP genes possess a highly conserved OS-D domain. We comprehensively analyzed these CSP genes and determined their conserved domains, structure, genomic distribution, phylogeny, and evolutionary patterns. We found an average of seven CSP genes in each of 19 Anopheles genomes, 27 CSP genes in Cx...
2018: PloS One
https://www.readbyqxmd.com/read/29304134/identification-of-chemosensory-genes-from-the-antennal-transcriptome-of-indian-meal-moth-plodia-interpunctella
#2
Xiaojian Jia, Xiaofang Zhang, Hongmin Liu, Rongyan Wang, Tao Zhang
Olfaction plays an indispensable role in mediating insect behavior, such as locating host plants, mating partners, and avoidance of toxins and predators. Olfactory-related proteins are required for olfactory perception of insects. However, very few olfactory-related genes have been reported in Plodia interpunctella up to now. In the present study, we sequenced the antennae transcriptome of P. interpunctella using the next-generation sequencing technology, and identified 117 candidate olfactory-related genes, including 29 odorant-binding proteins (OBPs), 15 chemosensory proteins (CSPs), three sensory neuron membrane proteins (SNMPs), 47 odorant receptors (ORs), 14 ionotropic receptors (IRs) and nine gustatory receptors (GRs)...
2018: PloS One
https://www.readbyqxmd.com/read/29198202/effects-of-insecticides-chlorpyrifos-emamectin-benzoate-and-fipronil-on-spodoptera-litura-might-be-mediated-by-obps-and-csps
#3
X Lin, Y Jiang, L Zhang, Y Cai
Spodoptera litura is a widespread polyphagous insect pest that can develop resistance and cross-resistance to insecticides, making it difficult to control. Insecticide exposure has previously been linked with induction of specific olfactory-related proteins, including some chemosensory proteins (CSPs) and odorant-binding proteins (OPBs), which may disrupt detection of environmental factors and reduce fitness. However, functional evidence supporting insecticide and OBPs/CSPs mediation remains unknown. Here we fed male S...
December 4, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29198196/the-identification-and-expression-analysis-of-candidate-chemosensory-genes-in-the-bird-cherry-oat-aphid-rhopalosiphum-padi-l
#4
Z-W Kang, F-H Liu, R-P Pang, W-B Yu, X-L Tan, Z-Q Zheng, H-G Tian, T-X Liu
The bird cherry-oat aphid Rhopalosiphum padi (L.) is one of the most important wheat pests with polyphagia and autumn migrants. And, chemosensory genes were thought to play a key role in insect searching their hosts, food and mate. However, a systematic identification of the chemosensory genes in this pest has not been reported. Thus, in this study, we identified 14 odorant-binding proteins, nine chemosensory proteins, one sensory neuron membrane protein, 15 odorant receptors, 19 gustatory receptors and 16 ionotropic receptors from R...
December 4, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29197652/crustacean-olfactory-systems-a-comparative-review-and-a-crustacean-perspective-on-insect-olfactory-systems
#5
REVIEW
S Harzsch, J Krieger
Malacostracan crustaceans display a large diversity of sizes, morphs and life styles. However, only a few representatives of decapod taxa have served as models for analyzing crustacean olfaction, such as crayfish and spiny lobsters. Crustaceans bear multiple parallel chemosensory pathways represented by different populations of unimodal chemosensory and bimodal chemo- and mechanosensory sensilla on the mouthparts, the walking limbs and primarily on their two pairs of antennae. Here, we focus on the olfactory pathway associated with the unimodal chemosensory sensilla on the first antennal pair, the aesthetascs...
November 29, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/29133804/antennal-transcriptome-analysis-and-expression-profiles-of-olfactory-genes-in-anoplophora-chinensis
#6
Jingzhen Wang, Ping Hu, Peng Gao, Jing Tao, Youqing Luo
Olfaction in insects is essential for host identification, mating and oviposition, in which olfactory proteins are responsible for chemical signaling. Here, we determined the transcriptomes of male and female adult antennae of Anoplophora chinensis, the citrus longhorned beetle. Among 59,357 unigenes in the antennal assembly, we identified 46 odorant-binding proteins, 16 chemosensory proteins (CSPs), 44 odorant receptors, 19 gustatory receptors, 23 ionotropic receptors, and 3 sensory neuron membrane proteins...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29075833/transcriptome-profiling-of-neurosensory-perception-genes-in-wing-tissue-of-two-evolutionary-distant-insect-orders-diptera-drosophila-melanogaster-and-hemiptera-acyrthosiphon-pisum
#7
Sandra Agnel, Martine da Rocha, Alain Robichon
The neurogenesis and neuronal functions in insect wing have been understudied mainly due to technical hindrances that have prevented electrophysiology studies for decades. The reason is that the nano-architecture of the wing chemosensory bristles hampers the receptors accessibility of odorants/tastants to receptors in fixed setup, whereas in nature, the wing flapping mixes these molecules in bristle lymph. In this report, we analyzed the transcriptome of the wing tissue of two species phylogenetically strongly divergent: Drosophila melanogaster a generic model for diptera order (complete metamorphosis) and the aphid acyrthosiphon pisum, representative of hemiptera order (incomplete metamorphosis) for which a conditional winged/wingless polyphenism is under control of population density and resources...
October 26, 2017: Journal of Molecular Evolution
https://www.readbyqxmd.com/read/29043489/comparative-transcriptome-analysis-of-apis-mellifera-antennae-of-workers-performing-different-tasks
#8
Hongyi Nie, Shupeng Xu, Cuiqin Xie, Haiyang Geng, Yazhou Zhao, Jianghong Li, Wei-Fone Huang, Yan Lin, Zhiguo Li, Songkun Su
Honey bee is a social insect. Its colony is mainly coordinated by the chemical signals such as pheromones produced by queen or brood. Correspondingly, the worker bee developed numerous complicated olfactory sensilla in antennae for detection of these colony chemical signals and nectar/pollen signals in foraging. With the normal development of new emerged workers, young adults (nurse bee) worked in colony at the first 2-3 weeks and then followed by the foraging activity outside of the hive, which give rise to great change of the surrounding chemical signals...
October 17, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/29026097/chemosensing-of-honeybee-parasite-varroa-destructor-transcriptomic-analysis
#9
Nurit Eliash, Nitin K Singh, Starlin Thangarajan, Noa Sela, Dena Leshkowitz, Yosi Kamer, Ilia Zaidman, Ada Rafaeli, Victoria Soroker
Chemosensing is a primary sense in nature, however little is known about its mechanism in Chelicerata. As a model organism we used the mite Varroa destructor, a key parasite of honeybees. Here we describe a transcriptomic analysis of two physiological stages for the Varroa foreleg, the site of primary olfactory organ. The transcriptomic analysis revealed transcripts of chemosensory related genes belonging to several groups. These include Niemann-Pick disease protein, type C2 (NPC2), gustatory receptors (GRs), ionotropic receptors (IRs), sensory neuron membrane proteins (SNMPs) and odorant binding proteins (OBP)...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29023543/a-mannitol-sorbitol-receptor-stimulates-dietary-intake-in-tribolium-castaneum
#10
Tomoyuki Takada, Ryoichi Sato, Shingo Kikuta
In insects, perception of chemical stimuli is involved in the acceptance or rejection of food. Gustatory receptors (Grs) that regulate external signals in chemosensory organs have been found in many insects. Tribolium castaneum, a major pest of stored products, possesses over 200 Gr genes. An expanded repertoire of Gr genes appears to be required for diet recognition in species that are generalist feeders; however, it remains unclear whether T. castaneum recognizes a suite of chemicals common to many products or whether its feeding is activated by specific chemicals, and whether its Grs are involved in feeding behavior...
2017: PloS One
https://www.readbyqxmd.com/read/29018358/identification-and-characterization-of-odorant-binding-proteins-in-the-forelegs-of-adelphocoris-lineolatus-goeze
#11
Liang Sun, Qian Wang, Qi Wang, Kun Dong, Yong Xiao, Yong-Jun Zhang
The chemosensory system is essential for insects to detect exogenous compounds, and odorant binding proteins (OBPs) play crucial roles in odorant binding and transduction. In the alfalfa plant bug Adelphocoris lineolatus, an important pest of multiple crops, our understanding of the physiological roles of antenna-biased OBPs has increased dramatically, whereas OBPs related to gustation have remained mostly unexplored. In this study, we employed RNA sequencing and RACE PCR methods to identify putative OBPs from the adult forelegs of both sexes...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28959208/olfactory-plasticity-variation-in-the-expression-of-chemosensory-receptors-in-bactrocera-dorsalis-in-different-physiological-states
#12
Sha Jin, Xiaofan Zhou, Feng Gu, Guohua Zhong, Xin Yi
Changes in physiological conditions could influence the perception of external odors, which is important for the reproduction and survival of insect. With the alteration of physiological conditions, such as, age, feeding state, circadian rhythm, and mating status, insect can modulate their olfactory systems accordingly. Ionotropic, gustatory, and odorant receptors (IR, GR, and ORs) are important elements of the insect chemosensory system, which enable insects to detect various external stimuli. In this study, we investigated the changes in these receptors at the mRNA level in Bactrocera dorsalis in different physiological states...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28931846/identification-of-genes-involved-in-chemoreception-in-plutella-xyllostella-by-antennal-transcriptome-analysis
#13
Shiyong Yang, Depan Cao, Guirong Wang, Yang Liu
Perception of environmental and habitat cues is of significance for insect survival and reproduction. Odor detection in insects is mediated by a number of proteins in antennae such as odorant receptors (ORs), ionotropic receptors (IRs), odorant binding proteins (OBPs), chemosensory proteins (CSPs), sensory neuron membrane proteins (SNMPs) and odorant degrading enzymes. In this study, we sequenced and assembled the adult male and female antennal transcriptomes of a destructive agricultural pest, the diamondback moth Plutella xyllostella...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28854688/the-evolutionary-dynamics-of-the-odorant-receptor-gene-family-in-corbiculate-bees
#14
Philipp Brand, Santiago R Ramírez
Insects rely on chemical information to locate food, choose mates, and detect potential predators. It has been hypothesized that adaptive changes in the olfactory system facilitated the diversification of numerous insect lineages. For instance, evolutionary changes of Odorant Receptor (OR) genes often occur in parallel with modifications in life history strategies. Corbiculate bees display a diverse array of behaviors that are controlled through olfaction, including varying degrees of social organization, and manifold associations with floral resources...
August 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28819793/the-mechanisms-underlying-the-production-of-discontinuous-gas-exchange-cycles-in-insects
#15
REVIEW
Philip G D Matthews
This review examines the control of gas exchange in insects, specifically examining what mechanisms could explain the emergence of discontinuous gas exchange cycles (DGCs). DGCs are gas exchange patterns consisting of alternating breath-hold periods and bouts of gas exchange. While all insects are capable of displaying a continuous pattern of gas exchange, this episodic pattern is known to occur within only some groups of insects and then only sporadically or during certain phases of their life cycle. Investigations into DGCs have tended to emphasise the role of chemosensory thresholds in triggering spiracle opening as critical for producing these gas exchange patterns...
August 17, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28777821/anatomy-and-behavioral-function-of-serotonin-receptors-in-drosophila-melanogaster-larvae
#16
Annina Huser, Melanie Eschment, Nazli Güllü, Katharina A N Collins, Kathrin Böpple, Lyubov Pankevych, Emilia Rolsing, Andreas S Thum
The biogenic amine serotonin (5-HT) is an important neuroactive molecule in the central nervous system of the majority of animal phyla. 5-HT binds to specific G protein-coupled and ligand-gated ion receptors to regulate particular aspects of animal behavior. In Drosophila, as in many other insects this includes the regulation of locomotion and feeding. Due to its genetic amenability and neuronal simplicity the Drosophila larva has turned into a useful model for studying the anatomical and molecular basis of chemosensory behaviors...
2017: PloS One
https://www.readbyqxmd.com/read/28777348/genotyping-and-bio-sensing-chemosensory-proteins-in-insects
#17
REVIEW
Guoxia Liu, Philippe Arnaud, Bernard Offmann, Jean-François Picimbon
Genotyping is the process of determining differences in the genetic make-up of an individual and comparing it to that of another individual. Focus on the family of chemosensory proteins (CSPs) in insects reveals differences at the genomic level across various strains and biotypes, but none at the level of individuals, which could be extremely useful in the biotyping of insect pest species necessary for the agricultural, medical and veterinary industries. Proposed methods of genotyping CSPs include not only restriction enzymatic cleavage and amplification of cleaved polymorphic sequences, but also detection of retroposons in some specific regions of the insect chromosome...
August 4, 2017: Sensors
https://www.readbyqxmd.com/read/28756307/identification-and-comparison-of-candidate-odorant-receptor-genes-in-the-olfactory-and-non-olfactory-organs-of-holotrichia-oblita-faldermann-by-transcriptome-analysis
#18
Kebin Li, Hongshuang Wei, Changlong Shu, Shuai Zhang, Yazhong Cao, Chen Luo, Jiao Yin
A sophisticated olfactory system is part of the explanation for the prominence of insects among animals because of the essential roles of the olfactory system in foraging, host seeking, mating, ovipositing and avoiding toxic substances. In this study, we sequenced and analysed the transcriptomes of olfactory tissue (antennae) and non-olfactory tissue (legs) of the scarab beetle, Holotrichia oblita Faldermann, which is a serious underground pest in China. We obtained approximately 80.2 million 150bp reads that were assembled into 61,038 unigenes with an average length of 890bp...
July 24, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/28736530/identification-and-expression-profiling-of-chemosensory-genes-in-dendrolimus-punctatus-walker
#19
Su-Fang Zhang, Hui-Hui Liu, Xiang-Bo Kong, Hong-Bin Wang, Fu Liu, Zhen Zhang
Dendrolimus punctatus Walker is a serious pest affecting conifers in southern China. As extensive pesticide spraying is currently required to control D. punctatus, new control strategies are urgently needed. Chemosensory genes represent potential molecular targets for development of alternative pest control strategies, and the expression characteristics of these genes provide an indication of their function. To date, little information is available regarding chemosensory genes in D. punctatus or their expression profiles at different development stages and in various tissues...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28732030/identification-of-odorant-binding-proteins-and-chemosensory-proteins-in-microplitis-mediator-as-well-as-functional-characterization-of-chemosensory-protein-3
#20
Yong Peng, Shan-Ning Wang, Ke-Ming Li, Jing-Tao Liu, Yao Zheng, Shuang Shan, Ye-Qing Yang, Rui-Jun Li, Yong-Jun Zhang, Yu-Yuan Guo
Odorant binding proteins (OBPs) and chemosensory proteins (CSPs) play important roles in transporting semiochemicals through the sensillar lymph to olfactory receptors in insect antennae. In the present study, twenty OBPs and three CSPs were identified from the antennal transcriptome of Microplitis mediator. Ten OBPs (MmedOBP11-20) and two CSPs (MmedCSP2-3) were newly identified. The expression patterns of these new genes in olfactory and non-olfactory tissues were investigated by real-time quantitative PCR (qPCR) measurement...
2017: PloS One
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