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insect chemosensory

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https://www.readbyqxmd.com/read/28185941/expression-map-of-a-complete-set-of-gustatory-receptor-genes-in-chemosensory-organs-of-bombyx-mori
#1
Huizhen Guo, Tingcai Cheng, Zhiwei Chen, Liang Jiang, Youbing Guo, Jianqiu Liu, Shenglong Li, Kiyoko Taniai, Kiyoshi Asaoka, Keiko Kadono-Okuda, Kallare P Arunkumar, Jiaqi Wu, Hirohisa Kishino, Huijie Zhang, Rakesh K Seth, Karumathil P Gopinathan, Nicolas Montagné, Emmanuelle Jacquin-Joly, Marian R Goldsmith, Qingyou Xia, Kazuei Mita
Most lepidopteran species are herbivores, and interaction with host plants affects their gene expression and behavior as well as their genome evolution. Gustatory receptors (Grs) are expected to mediate host plant selection, feeding, oviposition and courtship behavior. However, due to their high diversity, sequence divergence and extremely low level of expression it has been difficult to identify precisely a complete set of Grs in Lepidoptera. By manual annotation and BAC sequencing, we improved annotation of 43 gene sequences compared with previously reported Grs in the most studied lepidopteran model, the silkworm, Bombyx mori, and identified 7 new tandem copies of BmGr30 on chromosome 7, bringing the total number of BmGrs to 76...
February 6, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28166541/identification-and-expression-profile-analysis-of-odorant-binding-protein-and-chemosensory-protein-genes-in-bemisia-tabaci-med-by-head-transcriptome
#2
Ran Wang, Fengqi Li, Wei Zhang, Xiaoman Zhang, Cheng Qu, Guillaume Tetreau, Lujuan Sun, Chen Luo, Jingjiang Zhou
Odorant binding proteins (OBPs) and chemosensory proteins (CSPs) of arthropods are thought to be involved in chemical recognition which regulates pivotal behaviors including host choice, copulation and reproduction. In insects, OBPs and CSPs located mainly in the antenna but they have not been systematically characterized yet in Bemisia tabaci which is a cryptic species complex and could damage more than 600 plant species. In this study, among the 106,893 transcripts in the head assembly, 8 OBPs and 13 CSPs were identified in B...
2017: PloS One
https://www.readbyqxmd.com/read/28150741/antennal-transcriptomes-of-three-tortricid-moths-reveal-putative-conserved-chemosensory-receptors-for-social-and-habitat-olfactory-cues
#3
Francisco Gonzalez, Peter Witzgall, William B Walker
Insects use chemical signals to find mates, food and oviposition sites. The main chemoreceptor gene families comprise odorant receptors (ORs), ionotropic receptors (IRs) and gustatory receptors (GRs). Understanding the evolution of these receptors as well as their function will assist in advancing our knowledge of how chemical stimuli are perceived and may consequently lead to the development of new insect management strategies. Tortricid moths are important pests in horticulture, forestry and agriculture around the globe...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28137743/genomic-features-of-the-damselfly-calopteryx-splendens-representing-a-sister-clade-to-most-insect-orders
#4
Panagiotis Ioannidis, Felipe A Simao, Robert M Waterhouse, Mosè Manni, Mathieu Seppey, Hugh M Robertson, Bernhard Misof, Oliver Niehuis, Evgeny M Zdobnov
Insects comprise the most diverse and successful animal group with over one million described species that are found in almost every terrestrial and limnic habitat, with many being used as important models in genetics, ecology, and evolutionary research. Genome sequencing projects have greatly expanded the sampling of species from many insect orders, but genomic resources for species of certain insect lineages have remained relatively limited to date. To address this paucity, we sequenced the genome of the banded demoiselle, Calopteryx splendens, a damselfly (Odonata: Zygoptera) belonging to Palaeoptera, the clade containing the first winged insects...
January 30, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28117454/candidate-pheromone-receptors-of-codling-moth-cydia-pomonella-respond-to-pheromones-and-kairomones
#5
Alberto Maria Cattaneo, Francisco Gonzalez, Jonas M Bengtsson, Elizabeth A Corey, Emmanuelle Jacquin-Joly, Nicolas Montagné, Umberto Salvagnin, William B Walker, Peter Witzgall, Gianfranco Anfora, Yuriy V Bobkov
Olfaction plays a dominant role in the mate-finding and host selection behaviours of the codling moth (Cydia pomonella), an important pest of apple, pear and walnut orchards worldwide. Antennal transcriptome analysis revealed a number of abundantly expressed genes related to the moth olfactory system, including those encoding the olfactory receptors (ORs) CpomOR1, CpomOR3 and CpomOR6a, which belong to the pheromone receptor (PR) lineage, and the co-receptor (CpomOrco). Using heterologous expression, in both Drosophila olfactory sensory neurones and in human embryonic kidney cells, together with electrophysiological recordings and calcium imaging, we characterize the basic physiological and pharmacological properties of these receptors and demonstrate that they form functional ionotropic receptor channels...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28059141/the-molecular-sensory-machinery-of-a-chagas-disease-vector-expression-changes-through-imaginal-moult-and-sexually-dimorphic-features
#6
Jose Manuel Latorre-Estivalis, Hugh M Robertson, Kimberly K O Walden, Jerônimo Ruiz, Leilane Oliveira Gonçalves, Alessandra A Guarneri, Marcelo Gustavo Lorenzo
The triatomine bug Rhodnius prolixus is a main vector of Chagas disease, which affects several million people, mostly in Latin-America. Host searching, pheromone communication, and microclimatic preferences are aspects of its behaviour that depend on multimodal sensory inputs. The molecular bases of these sensory processes are largely unknown. The expression levels of genes transcribed in antennae were compared between 5(th) instar larvae, and female and male adults by means of RNA-Seq. The antennae of R. prolixus showed increased expression of several chemosensory-related genes in imaginal bugs, while both sexes had similar expression patterns for most target genes...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28056803/de-novo-transcriptome-and-expression-profile-analyses-of-the-asian-corn-borer-ostrinia-furnacalis-reveals-relevant-flubendiamide-response-genes
#7
Li Cui, Changhui Rui, Daibin Yang, Zhenying Wang, Huizhu Yuan
BACKGROUND: The Asian corn borer (ACB), Ostrinia furnacalis (Guenée), has become the most damaging insect pest of corn in Asia. However, the lack of genome or transcriptome information heavily hinders our further understanding of ACB in every aspect at a molecular level and on a genome-wide scale. Here, we used the Ion Torrent Personal Genome Machine (PGM) Sequencer to explore the ACB transcriptome and to identify relevant genes in response to flubendiamide, showing high selective activity against ACB...
January 5, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28028122/evolution-of-chemosensory-gene-families-in-arthropods-insight-from-the-first-inclusive-comparative-transcriptome-analysis-across-spider-appendages
#8
Joel Vizueta, Cristina Frías-López, Nuria Macías-Hernández, Miquel A Arnedo, Alejandro Sánchez-Gracia, Julio Rozas
Unlike hexapods and vertebrates, in chelicerates, knowledge of the specific molecules involved in chemoreception comes exclusively from the comparative analysis of genome sequences. Indeed, the genomes of mites, ticks and spiders contain several genes encoding homologs of some insect membrane receptors and small soluble chemosensory proteins. Here, we conducted for the first time a comprehensive comparative RNA-Seq analysis across different body structures of a chelicerate: the nocturnal wandering hunter spider Dysdera silvatica Schmidt 1981...
December 27, 2016: Genome Biology and Evolution
https://www.readbyqxmd.com/read/27989835/a-broadly-tuned-odorant-receptor-in-neurons-of-trichoid-sensilla-in-locust-locusta-migratoria
#9
Yinwei You, Dean P Smith, Mingyue Lv, Long Zhang
Insects have evolved sophisticated olfactory reception systems to sense exogenous chemical signals. Odorant receptors (ORs) on the membrane of chemosensory neurons are believed to be key molecules in sensing exogenous chemical cues. ORs in different species of insects are diverse and should tune a species to its own specific semiochemicals relevant to their survival. The orthopteran insect, locust (Locusta migratoria), is a model hemimetabolous insect. There is very limited knowledge on the functions of locust ORs although many locust OR genes have been identified in genomic sequencing experiments...
October 27, 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27982028/a-molecular-and-neuronal-basis-for-amino-acid-sensing-in-the-drosophila-larva
#10
Vincent Croset, Michael Schleyer, J Roman Arguello, Bertram Gerber, Richard Benton
Amino acids are important nutrients for animals, reflected in conserved internal pathways in vertebrates and invertebrates for monitoring cellular levels of these compounds. In mammals, sensory cells and metabotropic glutamate receptor-related taste receptors that detect environmental sources of amino acids in food are also well-characterised. By contrast, it is unclear how insects perceive this class of molecules through peripheral chemosensory mechanisms. Here we investigate amino acid sensing in Drosophila melanogaster larvae, which feed ravenously to support their rapid growth...
December 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27888648/identification-and-characterization-of-the-distinct-expression-profiles-of-candidate-chemosensory-membrane-proteins-in-the-antennal-transcriptome-of-adelphocoris-lineolatus-goeze
#11
Y Xiao, L Sun, X-Y Ma, K Dong, H-W Liu, Q Wang, Y-Y Guo, Z-W Liu, Y-J Zhang
Chemosensory membrane proteins, including odorant receptors (ORs), ionotropic receptors (IRs), gustatory receptors (GRs) and sensory neurone membrane proteins (SNMPs), are supposed to be crucial macromolecules in the insect olfactory signal transduction pathway. The alfalfa plant bug Adelphocoris lineolatus (Goeze) (Hemiptera: Miridae) is highly attracted to high-nitrogen or flowering plants and destroys many important agricultural crops. We assembled the antennal transcriptome of A. lineolatus using Illumina sequencing technology and identified a total of 108 transcripts encoding chemosensory membrane proteins (88 ORs, 12 IRs, four GRs and four SNMPs), amongst which 90 candidates appeared to be full length...
November 26, 2016: Insect Molecular Biology
https://www.readbyqxmd.com/read/27877091/conserved-chemosensory-proteins-in-the-proboscis-and-eyes-of-lepidoptera
#12
Jiao Zhu, Immacolata Iovinella, Francesca Romana Dani, Yu-Ling Liu, Ling-Qiao Huang, Yang Liu, Chen-Zhu Wang, Paolo Pelosi, Guirong Wang
Odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are endowed with several different functions besides being carriers for pheromones and odorants. Based on a previous report of a CSP acting as surfactant in the proboscis of the moth Helicoverpa armigera, we revealed the presence of orthologue proteins in two other moths Plutella xylostella and Chilo suppressalis, as well as two butterflies Papilio machaon and Pieris rapae, using immunodetection and proteomic analysis. The unusual conservation of these proteins across large phylogenetic distances indicated a common specific function for these CSPs...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27876901/nematodes-ultrastructure-complex-systems-and-processes
#13
REVIEW
Maha M A Basyoni, Enas M A Rizk
Nematode worms are among the most ubiquitous organisms on earth. They include free-living forms as well as parasites of plants, insects, humans and other animals. Recently, there has been an explosion of interest in nematode biology, including the area of nematode ultrastructure. Nematodes are round with a body cavity. They have one way guts with a mouth at one end and an anus at the other. They have a pseudocoelom that is lined on one side with mesoderm and on the other side with endoderm. It appears that the cuticle is a very complex and evolutionarily plastic feature with important functions involving protection, body movement and maintaining shape...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27836740/comparative-transcriptome-analysis-of-chemosensory-genes-in-two-sister-leaf-beetles-provides-insights-into-chemosensory-speciation
#14
Bin Zhang, Wei Zhang, Rui-E Nie, Wen-Zhu Li, Kari A Segraves, Xing-Ke Yang, Huai-Jun Xue
Divergence in chemosensory traits has been posited as an important component of chemosensory speciation in insects. In particular, chemosensory genes expressed in the peripheral sensory neurons are likely to influence insect behaviors such as preference for food, oviposition sites, and mates. Despite their key role in insect behavior and potentially speciation, the underlying genetic basis for divergence in chemosensory traits remains largely unexplored. One way to ascertain the role of chemosensory genes in speciation is to make comparisons of these genes across closely related species to detect the genetic signatures of divergence...
November 9, 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27832824/genome-of-the-asian-longhorned-beetle-anoplophora-glabripennis-a-globally-significant-invasive-species-reveals-key-functional-and-evolutionary-innovations-at-the-beetle-plant-interface
#15
Duane D McKenna, Erin D Scully, Yannick Pauchet, Kelli Hoover, Roy Kirsch, Scott M Geib, Robert F Mitchell, Robert M Waterhouse, Seung-Joon Ahn, Deanna Arsala, Joshua B Benoit, Heath Blackmon, Tiffany Bledsoe, Julia H Bowsher, André Busch, Bernarda Calla, Hsu Chao, Anna K Childers, Christopher Childers, Dave J Clarke, Lorna Cohen, Jeffery P Demuth, Huyen Dinh, HarshaVardhan Doddapaneni, Amanda Dolan, Jian J Duan, Shannon Dugan, Markus Friedrich, Karl M Glastad, Michael A D Goodisman, Stephanie Haddad, Yi Han, Daniel S T Hughes, Panagiotis Ioannidis, J Spencer Johnston, Jeffery W Jones, Leslie A Kuhn, David R Lance, Chien-Yueh Lee, Sandra L Lee, Han Lin, Jeremy A Lynch, Armin P Moczek, Shwetha C Murali, Donna M Muzny, David R Nelson, Subba R Palli, Kristen A Panfilio, Dan Pers, Monica F Poelchau, Honghu Quan, Jiaxin Qu, Ann M Ray, Joseph P Rinehart, Hugh M Robertson, Richard Roehrdanz, Andrew J Rosendale, Seunggwan Shin, Christian Silva, Alex S Torson, Iris M Vargas Jentzsch, John H Werren, Kim C Worley, George Yocum, Evgeny M Zdobnov, Richard A Gibbs, Stephen Richards
BACKGROUND: Relatively little is known about the genomic basis and evolution of wood-feeding in beetles. We undertook genome sequencing and annotation, gene expression assays, studies of plant cell wall degrading enzymes, and other functional and comparative studies of the Asian longhorned beetle, Anoplophora glabripennis, a globally significant invasive species capable of inflicting severe feeding damage on many important tree species. Complementary studies of genes encoding enzymes involved in digestion of woody plant tissues or detoxification of plant allelochemicals were undertaken with the genomes of 14 additional insects, including the newly sequenced emerald ash borer and bull-headed dung beetle...
November 11, 2016: Genome Biology
https://www.readbyqxmd.com/read/27815144/a-broadly-tuned-odorant-receptor-in-neurons-of-trichoid-sensilla-in-locust-locusta-migratoria
#16
Yinwei You, Dean P Smith, Mingyue Lv, Long Zhang
Insects have evolved sophisticated olfactory reception systems to sense exogenous chemical signals. Odorant receptors (ORs) on the membrane of chemosensory neurons are believed to be key molecules in sensing exogenous chemical cues. ORs in different species of insects are diverse and should tune a species to its own specific semiochemicals relevant to their survival. The orthopteran insect, locust (Locusta migratoria), is a model hemimetabolous insect. There is very limited knowledge on the functions of locust ORs although many locust OR genes have been identified in genomic sequencing experiments...
December 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27797949/complex-evolutionary-dynamics-of-massively-expanded-chemosensory-receptor-families-in-an-extreme-generalist-chelicerate-herbivore
#17
Phuong Cao Thi Ngoc, Robert Greenhalgh, Wannes Dermauw, Stephane Rombauts, Sabina Bajda, Vladimir Zhurov, Miodrag Grbić, Yves Van de Peer, Thomas Van Leeuwen, Pierre Rouzé, Richard M Clark
While mechanisms to detoxify plant produced, anti-herbivore compounds have been associated with plant host use by herbivores, less is known about the role of chemosensory perception in their life histories. This is especially true for generalists, including chelicerate herbivores that evolved herbivory independently from the more studied insect lineages. To shed light on chemosensory perception in a generalist herbivore, we characterized the chemosensory receptors (CRs) of the chelicerate two-spotted spider mite, Tetranychus urticae, an extreme generalist...
December 14, 2016: Genome Biology and Evolution
https://www.readbyqxmd.com/read/27794461/regulation-of-cuticular-hydrocarbon-profile-maturation-by-drosophila-tanning-hormone-bursicon-and-its-interaction-with-desaturase-activity
#18
Justin Flaven-Pouchon, Jean-Pierre Farine, John Ewer, Jean-François Ferveur
Shortly after emergence the exoskeleton (cuticle) of adult insects is rapidly expanded, hardened (sclerotized), and pigmented (melanized). In parallel with this process, the oenocytes, which are large polyploid cells located below the abdominal epidermis, secrete onto the cuticle a cocktail of cuticular hydrocarbons (CHs) and waxes. These improve the waterproofing of the cuticle, and also provide important chemosensory and pheromonal cues linked with gender, age, and species differentiation. The hardening and pigmentation of the new cuticle are controlled by the neurohormone, bursicon, and its receptor, encoded by the DLGR2 receptor, rickets (rk); by contrast, little is known about the timecourse of changes in CH profile and about the role of bursicon in this process...
December 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27792774/under-expression-of-chemosensory-genes-in-domiciliary-bugs-of-the-chagas-disease-vector-triatoma-brasiliensis
#19
Axelle Marchant, Florence Mougel, Emmanuelle Jacquin-Joly, Jane Costa, Carlos Eduardo Almeida, Myriam Harry
BACKGROUND: In Latin America, the bloodsucking bugs Triatominae are vectors of Trypanosoma cruzi, the parasite that causes Chagas disease. Chemical elimination programs have been launched to control Chagas disease vectors. However, the disease persists because native vectors from sylvatic habitats are able to (re)colonize houses-a process called domiciliation. Triatoma brasiliensis is one example. Because the chemosensory system allows insects to interact with their environment and plays a key role in insect adaption, we conducted a descriptive and comparative study of the chemosensory transcriptome of T...
October 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27783364/scanning-electron-microscopy-study-of-the-antennal-sensilla-of-monema-flavescens-walker-lepidoptera-limacodidae
#20
S Yang, H Liu, J T Zhang, J Liu, H Zheng, Y Ren
Monema flavescens Walker (Lepidoptera: Limacodidae) is a serious polyphagous defoliator. Using scanning electron microscopy, the external morphology of the antennal sensilla of this pest was examined for a better understanding of the mechanisms of insect-insect and insect-plant chemical communications. The antennae of M. flavescens were filiform in shape, and 11 morphological types of sensilla were found in both sexes. Six types of likely chemosensory sensilla were identified: uniporous sensilla chaetica, multiporous sensilla trichodea, and four types of multiporous sensilla basiconica...
October 25, 2016: Neotropical Entomology
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