keyword
MENU ▼
Read by QxMD icon Read
search

gustatory receptor

keyword
https://www.readbyqxmd.com/read/29231818/molecular-basis-of-fatty-acid-taste-in-drosophila
#1
Ji-Eun Ahn, Yan Chen, Hubert O Amrein
Behavioral studies have established that Drosophila appetitive taste responses to towards fatty acids are mediated by sweet sensing Gustatory Receptor Neurons (GRNs). Here we show that sweet GRN activation requires the function of the IonotropicReceptor genes IR25a, IR76b and IR56d. The former two IR genes are expressed in several neurons per sensilla, while IR56d expression is restricted to sweet GRNs. Importantly, loss of appetitive behavioral responses to fatty acids in IR25a and IR76b mutant flies can be completely rescued by expression of respective transgenes in sweet GRNs...
December 12, 2017: ELife
https://www.readbyqxmd.com/read/29218733/a-gene-driven-recovery-mechanism-drosophila-larvae-increase-feeding-activity-for-post-stress-weight-recovery
#2
Masasuke Ryuda, Miku Tabuchi, Hitoshi Matsumoto, Takashi Matsumura, Masanori Ochiai, Yoichi Hayakawa
Recovery from weight loss after stress is important for all organisms, although the recovery mechanisms are not fully understood. We are working to clarify these mechanisms. Here, we recorded enhanced feeding activity of Drosophila melanogaster larvae from 2 to 4 h after heat stress at 35°C for 1 h. During the post-stress period, expression levels of sweet taste gustatory receptor genes (Grs), Gr5a, Gr43a, Gr64a, and Gr64f, were elevated, whereas bitter taste Grs, Gr66a, and Gr33a, were decreased in expression and expression of a non-typical taste receptor Gr, Gr68a, was unchanged...
December 8, 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/29198196/the-identification-and-expression-analysis-of-candidate-chemosensory-genes-in-the-bird-cherry-oat-aphid-rhopalosiphum-padi-l
#3
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/29194737/differential-expression-of-a-fructose-receptor-gene-in-honey-bee-workers-according-to-age-and-behavioral-role
#4
Tomoyuki Takada, Taiyo Sasaki, Ryoichi Sato, Shingo Kikuta, Maki N Inoue
Honey bee (Apis mellifera) workers contribute to the maintenance of colonies in various ways. The primary functions of workers are divided into two types depending on age: young workers (nurses) primarily engage in such behaviors as cleaning and food handling within the hive, whereas older workers (foragers) acquire floral nutrients beyond the colony. Concomitant with this age-dependent change in activity, physiological changes occur in the tissues and organs of workers. Nurses supply younger larvae with honey containing high levels of glucose and supply older larvae with honey containing high levels of fructose...
December 1, 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/29178612/identification-of-a-sugar-gustatory-receptor-and-its-effect-on-fecundity-of-the-brown-planthopper-nilaparvata-lugens
#5
Wei-Wen Chen, Kui Kang, Pan Yang, Wen-Qing Zhang
In insects, the gustatory system plays a crucial role in multiple physiological behaviors, including feeding, toxin avoidance, courtship, mating and oviposition. Gustatory stimuli from the environment are recognized by gustatory receptors. To date, little is known about the function of gustatory receptors in agricultural pest insects. In this study, we cloned a sugar gustatory receptor gene, NlGr11, from the brown planthopper (BPH), Nilaparvata lugens (Stål), a serious pest of rice in Asia; we then identified its ligands, namely, fructose, galactose and arabinose, by calcium imaging assay...
November 27, 2017: Insect Science
https://www.readbyqxmd.com/read/29175757/identification-and-characterization-of-chemosensory-gene-families-in-the-bark-beetle-tomicus-yunnanensis
#6
Nai-Yong Liu, Zong-Bo Li, Ning Zhao, Qi-Sheng Song, Jia-Ying Zhu, Bin Yang
The bark beetle, Tomicus yunnanensis (Coleoptera: Scolytinae), is a seriously destructive pest of Yunnan pine (Pinus yunnanensis) and is distributed solely in Southwestern China. It has been a challenge to control this pest owing to its resistance to chemical pesticides, which have been used as the main control strategy of this species in recent years. Since this approach will continue until an alternative mitigation strategy is implemented, it is essential to develop novel or improved biocontrol approaches...
November 23, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/29163209/the-role-of-cholecystokinin-in-peripheral-taste-signaling-in-mice
#7
Ryusuke Yoshida, Misa Shin, Keiko Yasumatsu, Shingo Takai, Mayuko Inoue, Noriatsu Shigemura, Soichi Takiguchi, Seiji Nakamura, Yuzo Ninomiya
Cholecystokinin (CCK) is a gut hormone released from enteroendocrine cells. CCK functions as an anorexigenic factor by acting on CCK receptors expressed on the vagal afferent nerve and hypothalamus with a synergistic interaction between leptin. In the gut, tastants such as amino acids and bitter compounds stimulate CCK release from enteroendocrine cells via activation of taste transduction pathways. CCK is also expressed in taste buds, suggesting potential roles of CCK in taste signaling in the peripheral taste organ...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29163195/members-of-bitter-taste-receptor-cluster-tas2r143-tas2r135-tas2r126-are-expressed-in-the-epithelium-of-murine-airways-and-other-non-gustatory-tissues
#8
Shuya Liu, Shun Lu, Rui Xu, Ann Atzberger, Stefan Günther, Nina Wettschureck, Stefan Offermanns
The mouse bitter taste receptors Tas2r143, Tas2r135, and Tas2r126 are encoded by genes that cluster on chromosome 6 and have been suggested to be expressed under common regulatory elements. Previous studies indicated that the Tas2r143/Tas2r135/Tas2r126 cluster is expressed in the heart, but other organs had not been systematically analyzed. In order to investigate the expression of this bitter taste receptor gene cluster in non-gustatory tissues, we generated a BAC (bacterial artificial chromosome) based transgenic mouse line, expressing CreERT2 under the control of the Tas2r143 promoter...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29133804/antennal-transcriptome-analysis-and-expression-profiles-of-olfactory-genes-in-anoplophora-chinensis
#9
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/29133786/heterogeneity-in-the-drosophila-gustatory-receptor-complexes-that-detect-aversive-compounds
#10
Ha Yeon Sung, Yong Taek Jeong, Ji Yeon Lim, Hyeyon Kim, Soo Min Oh, Sun Wook Hwang, Jae Young Kwon, Seok Jun Moon
Animals must detect aversive compounds to survive. Bitter taste neurons express heterogeneous combinations of bitter receptors that diversify their response profiles, but this remains poorly understood. Here we describe groups of taste neurons in Drosophila that detect the same bitter compounds using unique combinations of gustatory receptors (GRs). These distinct complexes also confer responsiveness to non-overlapping sets of additional compounds. While either GR32a/GR59c/GR66a or GR22e/GR32a/GR66a heteromultimers are sufficient for lobeline, berberine, and denatonium detection, only GR22e/GR32a/GR66a responds to strychnine...
November 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/29130618/the-taste-of-toxicity-a-quantitative-analysis-of-bitter-and-toxic-molecules
#11
Ido Nissim, Ayana Dagan-Wiener, Masha Y Niv
The role of bitter taste-one of the few basic taste modalities-is commonly assumed to signal toxicity and alert animals against consuming harmful compounds. However, it is known that some toxic compounds are not bitter and that many bitter compounds have negligible toxicity while having important health benefits. Here we apply a quantitative analysis of the chemical space to shed light on the bitterness-toxicity relationship. Using the BitterDB dataset of bitter molecules, The BitterPredict prediction tool, and datasets of toxic compounds, we quantify the identity and similarity between bitter and toxic compounds...
November 11, 2017: IUBMB Life
https://www.readbyqxmd.com/read/29121639/a-subset-of-sweet-sensing-neurons-identified-by-ir56d-are-necessary-and-sufficient-for-fatty-acid-taste
#12
John M Tauber, Elizabeth B Brown, Yuanyuan Li, Maria E Yurgel, Pavel Masek, Alex C Keene
Fat represents a calorically potent food source that yields approximately twice the amount of energy as carbohydrates or proteins per unit of mass. The highly palatable taste of free fatty acids (FAs), one of the building blocks of fat, promotes food consumption, activates reward circuitry, and is thought to contribute to hedonic feeding underlying many metabolism-related disorders. Despite a role in the etiology of metabolic diseases, little is known about how dietary fats are detected by the gustatory system to promote feeding...
November 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29121087/the-gram-negative-sensing-receptor-pgrp-lc-contributes-to-grooming-induction-in-drosophila
#13
Aya Yanagawa, Claudine Neyen, Bruno Lemaitre, Frédéric Marion-Poll
Behavioral resistance protects insects from microbial infection. However, signals inducing insect hygiene behavior are still relatively unexplored. Our previous study demonstrated that olfactory signals from microbes enhance insect hygiene behavior, and gustatory signals even induce the behavior. In this paper, we postulated a cross-talk between behavioral resistance and innate immunity. To examine this hypothesis, we employed a previously validated behavioral test to examine the function of taste signals in inducing a grooming reflex in decapitated flies...
2017: PloS One
https://www.readbyqxmd.com/read/29116191/histone-methyltransferase-g9a-is-a-key-regulator-of-the-starvation-induced-behaviors-in-drosophila-melanogaster
#14
Kouhei Shimaji, Ryo Tanaka, Toru Maeda, Mamiko Ozaki, Hideki Yoshida, Yasuyuki Ohkawa, Tetsuya Sato, Mikita Suyama, Masamitsu Yamaguchi
Organisms have developed behavioral strategies to defend themselves from starvation stress. Despite of their importance in nature, the underlying mechanisms have been poorly understood. Here, we show that Drosophila G9a (dG9a), one of the histone H3 Lys 9-specific histone methyltransferases, functions as a key regulator for the starvation-induced behaviors. RNA-sequencing analyses utilizing dG9a null mutant flies revealed that the expression of some genes relating to gustatory perception are regulated by dG9a under starvation conditions...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29107518/transsynaptic-mapping-of-second-order-taste-neurons-in-flies-by-trans-tango
#15
Mustafa Talay, Ethan B Richman, Nathaniel J Snell, Griffin G Hartmann, John D Fisher, Altar Sorkaç, Juan F Santoyo, Cambria Chou-Freed, Nived Nair, Mark Johnson, John R Szymanski, Gilad Barnea
Mapping neural circuits across defined synapses is essential for understanding brain function. Here we describe trans-Tango, a technique for anterograde transsynaptic circuit tracing and manipulation. At the core of trans-Tango is a synthetic signaling pathway that is introduced into all neurons in the animal. This pathway converts receptor activation at the cell surface into reporter expression through site-specific proteolysis. Specific labeling is achieved by presenting a tethered ligand at the synapses of genetically defined neurons, thereby activating the pathway in their postsynaptic partners and providing genetic access to these neurons...
November 15, 2017: Neuron
https://www.readbyqxmd.com/read/29107239/mini-review-gustatory-reception-of-chemicals-affecting-host-feeding-in-aedine-mosquitoes
#16
REVIEW
Jackson T Sparks, Joseph C Dickens
Mosquitoes vector dangerous human diseases during blood feeding. Gustatory (taste) receptor neurons in the mosquito provide important chemical information including the nature and suitability of a potential host. Here we discuss the behavior, neurophysiology and molecular mechanisms associated with feeding in aedine mosquitoes, important vectors of emerging diseases including Zika fever, chikungunya and dengue fever. We describe how interactions between feeding stimulation and deterrency at the peripheral neural receptor level provide input to higher order neural processing centers affecting decisions to feed...
October 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/29103093/enhancement-of-gustatory-neural-responses-by-parasympathetic-nerve-in-the-frog
#17
Toshihide Sato, Yukio Okada
The autonomic nervous system affects the gustatory responses in animals. Frog glossopharyngeal nerve (GPN) contains the parasympathetic nerve. We checked the effects of electrical stimulation (ES) of the parasympathetic nerves on the gustatory neural responses. The gustatory neural impulses of the GPNs were recorded using bipolar AgCl wires under normal blood circulation and integrated with a time constant of 1 s. Electrical stimuli were applied to the proximal side of the GPN with a pair of AgCl wires. The parasympathetic nerves of the GPN were strongly stimulated for 10 s with 6 V at 30 Hz before taste stimulation...
November 4, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/29081083/ionotropic-receptor-76b-is-required-for-gustatory-aversion-to-excessive-na-in-drosophila
#18
Min Jung Lee, Ha Yeon Sung, HyunJi Jo, Hyung-Wook Kim, Min Sung Choi, Jae Young Kwon, KyeongJin Kang
Avoiding ingestion of excessively salty food is essential for cation homeostasis that underlies various physiological processes in organisms. The molecular and cellular basis of the aversive salt taste, however, remains elusive. Through a behavioral reverse genetic screening, we discover that feeding suppression by Na(+)-rich food requires Ionotropic Receptor 76b (Ir76b) in Drosophila labellar gustatory receptor neurons (GRNs). Concentrated sodium solutions with various anions caused feeding suppression dependent on Ir76b...
October 2017: Molecules and Cells
https://www.readbyqxmd.com/read/29047261/deciphering-the-genes-for-taste-receptors-for-fructose-in-drosophila
#19
Shun Uchizono, Taichi Q Itoh, Haein Kim, Naoki Hamada, Jae Young Kwon, Teiichi Tanimura
Taste sensitivity to sugars plays an essential role in the initiation of feeding behavior. In Drosophila melanogaster, recent studies have identified several gustatory receptor (Gr) genes required for sensing sweet compounds. However, it is as yet undetermined how these GRs function as taste receptors tuned to a wide range of sugars. Among sugars, fructose has been suggested to be detected by a distinct receptor from other sugars. While GR43A has been reported to sense fructose in the brain, it is not expressed in labellar gustatory receptor neurons that show taste response to fructose...
October 2017: Molecules and Cells
https://www.readbyqxmd.com/read/29041914/analysis-of-the-genome-of-the-new-zealand-giant-collembolan-holacanthella-duospinosa-sheds-light-on-hexapod-evolution
#20
Chen Wu, Melissa D Jordan, Richard D Newcomb, Neil J Gemmell, Sarah Bank, Karen Meusemann, Peter K Dearden, Elizabeth J Duncan, Sefanie Grosser, Kim Rutherford, Paul P Gardner, Ross N Crowhurst, Bernd Steinwender, Leah K Tooman, Mark I Stevens, Thomas R Buckley
BACKGROUND: The New Zealand collembolan genus Holacanthella contains the largest species of springtails (Collembola) in the world. Using Illumina technology we have sequenced and assembled a draft genome and transcriptome from Holacanthella duospinosa (Salmon). We have used this annotated assembly to investigate the genetic basis of a range of traits critical to the evolution of the Hexapoda, the phylogenetic position of H. duospinosa and potential horizontal gene transfer events. RESULTS: Our genome assembly was ~375 Mbp in size with a scaffold N50 of ~230 Kbp and sequencing coverage of ~180×...
October 17, 2017: BMC Genomics
keyword
keyword
59173
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"