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https://www.readbyqxmd.com/read/28480618/beyond-chemoreception-diverse-tasks-of-soluble-olfactory-proteins-in-insects
#1
Paolo Pelosi, Immacolata Iovinella, Jiao Zhu, Guirong Wang, Francesca R Dani
Odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are regarded as carriers of pheromones and odorants in insect chemoreception. These proteins are typically located in antennae, mouth organs and other chemosensory structures; however, members of both classes of proteins have been detected recently in other parts of the body and various functions have been proposed. The best studied of these non-sensory tasks is performed in pheromone glands, where OBPs and CSPs solubilise hydrophobic semiochemicals and assist their controlled release into the environment...
May 7, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28460028/evolutionary-history-of-chemosensory-related-gene-families-across-the-arthropoda
#2
Seong-Il Eyun, Ho Young Soh, Marijan Posavi, James B Munro, Daniel S T Hughes, Shwetha C Murali, Jiaxin Qu, Shannon Dugan, Sandra L Lee, Hsu Chao, Huyen Dinh, Yi Han, HarshaVardhan Doddapaneni, Kim C Worley, Donna M Muzny, Eun-Ok Park, Joana C Silva, Richard A Gibbs, Stephen Richards, Carol Eunmi Lee
Chemosensory-related gene (CRG) families have been studied extensively in insects, but their evolutionary history across the Arthropoda had remained relatively unexplored. Here, we address current hypotheses and prior conclusions on CRG family evolution using a more comprehensive dataset. In particular, odorant receptors (ORs) were hypothesized to have proliferated during terrestrial colonization by insects (hexapods), but their association with other pancrustacean clades and with independent terrestrial colonizations in other arthropod subphyla have been unclear...
April 29, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28449035/identification-and-expression-profiling-of-odorant-binding-proteins-and-chemosensory-proteins-of-daktulosphaira-vitifoliae-hemiptera-phylloxeridae
#3
Jing-Jing Zhao, Yue Zhang, Dong-Sheng Fan, Ji-Nian Feng
In insects, odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are primary peripheral olfactory proteins playing critical roles in odorant detection. In this study, we present the first identification of OBPs and CSPs from the transcriptome of grape phylloxera Daktulosphaira vitifoliae Fitch, an important pest that damages both roots and leaves of grapes. The OBPs contained six conserved cysteine residues and the CSPs contained four conserved cysteine residues in this insect. Phylogenetic analysis showed that most of the olfactory proteins were closely related to OBPs and CSPs from other aphids...
April 25, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28444203/a-chemosensory-protein-gene-si-csp1-associated-with-necrophoric-behavior-in-red-imported-fire-ants-hymenoptera-formicidae
#4
Hua-Long Qiu, Dai-Feng Cheng
Necrophoric behavior is essential to colony health in social insects. Little is known about the genes that are responsible for necrophoric behavior. Here, we show that a chemosensory protein gene Si-CSP1 was expressed significantly higher in the antennae than in other tissues such as the legs and heads of Solenopsis invicta Buren workers. Furthermore, Si-CSP1-silenced workers moved significantly fewer corpses of their nestmates than normal workers. Finally, Si-CSP1-silenced workers exhibited weaker antennal responses to oleic acid and linoleic acid than controls...
June 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28428935/genetic-analysis-of-mosquito-detection-of-humans
#5
Joshua I Raji, Matthew DeGennaro
Mosquitoes detect the presence of humans by integrating chemosensory, thermal, and visual cues. Among these, odors are crucial for mosquito host detection. Insects have evolved a diverse repertoire of receptors to detect their plant and animal hosts. Genetic analysis of these receptors in Drosophila has set the stage for similar studies in mosquitoes. The diversity of the cues involved in mosquito host-seeking has made designing behavioral control strategies a challenge. The sensory receptors that are most important for mosquito detection of humans can now be determined using genome editing...
April 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28407077/chemosensory-responses-to-the-repellent-nepeta-essential-oil-and-its-major-component-nepetalactone-by-aedes-aegypti-diptera-culicidae-a-vector-of-zika-virus
#6
Jackson T Sparks, Jonathan D Bohbot, Mihailo Ristic, Danijela Mišic, Marijana Skoric, Autar Mattoo, Joseph C Dickens
Nepeta essential oil (Neo; catnip) and its major component, nepetalactone, have long been known to repel insects including mosquitoes. However, the neural mechanisms through which these repellents are detected by mosquitoes, including the yellow fever mosquito Aedes aegypti (L.), an important vector of Zika virus, were poorly understood. Here we show that Neo volatiles activate olfactory receptor neurons within the basiconic sensilla on the maxillary palps of female Ae. aegypti. A gustatory receptor neuron sensitive to the feeding deterrent quinine and housed within sensilla on the labella of females was activated by both Neo and nepetalactone...
April 12, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28407047/identification-of-candidate-odorant-binding-protein-and-chemosensory-protein-genes-in-cyrtorhinus-lividipennis-hemiptera-miridae-a-key-predator-of-the-rice-planthoppers-in-asia
#7
Gui-Yao Wang, Mu-Fei Zhu, Yan-Dong Jiang, Wen-Wu Zhou, Su Liu, Kong Luen Heong, Jiaan Cheng, Zeng-Rong Zhu
Cyrtorhinus lividipennis Reuter (Hemiptera: Miridae) is an important predatory natural enemy of planthopper and leafhopper eggs in Asian rice paddy fields. Cyrtorhinus lividipennis is known to rely largely on herbivore-induced plant volatiles to identify eggs embedded in rice stem tissues for feeding and on pheromones for mating. However, exactly how C. lividipennis decode these chemical information is unclear. In most insects, the odorant-binding proteins (OBPs) and the chemosensory proteins (CSPs) are essential for seeking out food resources and mates...
June 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28390075/a-cytochrome-p450-gene-plays-a-role-in-the-recognition-of-sex-pheromones-in-the-tobacco-cutworm-spodoptera-litura
#8
B Feng, K Zheng, C Li, Q Guo, Y Du
Cytochrome P450 (P450 or CYP) genes are involved in fundamental physiological functions, and might be also associated with the olfactory recognition of sex pheromones in beetles and moths. A P450 gene, Spodoptera litura CYP4L4 (SlituCYP4L4), was cloned for the first time from the antennae of S. litura. SlituCYP4L4 was almost exclusively expressed in the adult stage and predominantly expressed in the adult antennae. In situ hybridization showed that SlituCYP4L4 localized mainly at the base of the long sensilla trichoidea, which responds to sex pheromone components...
April 8, 2017: Insect Molecular Biology
https://www.readbyqxmd.com/read/28387246/sensory-genes-identification-with-head-transcriptome-of-the-migratory-armyworm-mythimna-separata
#9
Zhenxing Liu, Xiaoyun Wang, Chaoliang Lei, Fen Zhu
Sensory system plays important roles in a wide array of insect's behavior and physiological events, including the host landing and locating, feeding, flying, sex responding, mating and oviposition which happen independently and in sequence. The armyworm Mythimna separata (Lepidoptera: Noctuidae) of migratory insect is destructive for alimentarn crop and economic crop throughout the world. Here we present the high throughput sequencing of the head transcriptome and identify members of the major sensory genes which are crucial for armyworm's success worldwide, including 8 opsins, 22 chemosensory proteins, 50 odorant binding proteins, 60 odorant receptors, 8 gustatory receptors, 24 ionotropic receptors, and 2 sensory neuron membrane proteins...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28382236/molecular-identification-and-expression-patterns-of-odorant-binding-protein-and-chemosensory-protein-genes-in-athetis-lepigone-lepidoptera-noctuidae
#10
Ya-Nan Zhang, Xiu-Yun Zhu, Ji-Fang Ma, Zhi-Ping Dong, Ji-Wei Xu, Ke Kang, Long-Wa Zhang
The olfaction system of insects plays an important role in mediating various physiological behaviors, including locating hosts, avoiding predators, and recognizing mates and oviposition sites. Therefore, some key genes in the system present valuable opportunities as targets for developing novel green pesticides. Athetis lepigone, a noctuid moth can feed on more than 30 different host plants making it a serious polyphagous pest worldwide, and it has become one of the major maize pests in northern China since 2011...
2017: PeerJ
https://www.readbyqxmd.com/read/28331632/group-housed-females-promote-production-of-asexual-ootheca-in-american-cockroaches
#11
Ko Katoh, Masazumi Iwasaki, Shouhei Hosono, Atsushi Yoritsune, Masanori Ochiai, Makoto Mizunami, Hiroshi Nishino
BACKGROUND: Facultative parthenogenesis, seen in many animal phyla, is a reproductive strategy in which females are able to generate offspring when mating partners are unavailable. In some subsocial and eusocial insects, parthenogenesis is often more prevalent than sexual reproduction. However, little is known about how social cooperation is linked to the promotion of parthenogenesis. The domiciliary cockroach Periplaneta americana is well-suited to addressing this issue as this species belongs to the superfamily Blattoidea, which diverged into eusocial termites and shows facultative parthenogenesis...
2017: Zoological Letters
https://www.readbyqxmd.com/read/28331183/differential-expression-of-chemosensory-protein-genes-in-midguts-in-response-to-diet-of-spodoptera-litura
#12
Xin Yi, Jiangwei Qi, Xiaofan Zhou, Mei Ying Hu, Guo Hua Zhong
While it has been well characterized that chemosensory receptors in guts of mammals have great influence on food preference, much remains elusive in insects. Insect chemosensory proteins (CSPs) are soluble proteins that could deliver chemicals to olfactory and gustatory receptors. Recent studies have identified a number of CSPs expressed in midgut in Lepidoptera insects, which started to reveal their roles in chemical recognition and stimulating appetite in midgut. In this study, we examined expression patterns in midgut of 21 Spodoptera litura CSPs (SlitCSPs) characterized from a previously reported transcriptome, and three CSPs were identified to be expressed highly in midgut...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321909/characterization-of-candidate-odorant-binding-proteins-and-chemosensory-proteins-in-the-tea-geometrid-ectropis-obliqua-prout-lepidoptera-geometridae
#13
Liang Sun, Teng-Fei Mao, Yu-Xing Zhang, Jian-Jian Wu, Jia-He Bai, Ya-Nan Zhang, Xing-Chuan Jiang, Kun-Shan Yin, Yu-Yuan Guo, Yong-Jun Zhang, Qiang Xiao
Insects rely heavily on their sophisticated chemosensory systems to locate host plants and find conspecific mates. Although the molecular mechanisms of odorant recognition in many Lepidoptera species have been well explored, limited information has been reported on the geometrid moth Ectropis obliqua Prout, an economically important pest of tea plants. In the current study, we first attempted to identify and characterize the putative olfactory carrier proteins, including odorant-binding proteins (OBPs) and chemosensory proteins (CSPs)...
April 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/28249567/a-reference-gene-set-for-sex-pheromone-biosynthesis-and-degradation-genes-from-the-diamondback-moth-plutella-xylostella-based-on-genome-and-transcriptome-digital-gene-expression-analyses
#14
Peng He, Yun-Fei Zhang, Duan-Yang Hong, Jun Wang, Xing-Liang Wang, Ling-Hua Zuo, Xian-Fu Tang, Wei-Ming Xu, Ming He
BACKGROUND: Female moths synthesize species-specific sex pheromone components and release them to attract male moths, which depend on precise sex pheromone chemosensory system to locate females. Two types of genes involved in the sex pheromone biosynthesis and degradation pathways play essential roles in this important moth behavior. To understand the function of genes in the sex pheromone pathway, this study investigated the genome-wide and digital gene expression of sex pheromone biosynthesis and degradation genes in various adult tissues in the diamondback moth (DBM), Plutella xylostella, which is a notorious vegetable pest worldwide...
March 1, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28228732/c-terminus-methionene-specifically-involved-in-binding-corn-odorants-to-odorant-binding-protein4-in-macrocentrus-cingulum
#15
Tofael Ahmed, Tiantao Zhang, Zhenying Wang, Kanglai He, Shuxiong Bai
The soluble carrier proteins, OBPs carry odor components through sensilium lymph to specific receptors within the antennal sensilla to trigger behavioral responses. Herein, McinOBP4 was characterized from the Macrocentrus cingulum, which is the specialist parasitic insect of Ostrinia furnacalis for better understanding of olfactory recognition mechanism of this wasp. The classical odorant binding protein McinOBP4 showed good binding affinity to corn green leaf volatiles. RT-qPCR results showed that the McinOBP4 was primarily expressed in male and female wasp antennae, with transcripts levels differing by sex...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28185941/expression-map-of-a-complete-set-of-gustatory-receptor-genes-in-chemosensory-organs-of-bombyx-mori
#16
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...
March 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
#17
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
#18
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
#19
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...
February 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28117454/candidate-pheromone-receptors-of-codling-moth-cydia-pomonella-respond-to-pheromones-and-kairomones
#20
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
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