scholarly journals Identification and Characterization of Two “Sensory Neuron Membrane Proteins” (SNMPs) of the Desert Locust,Schistocerca gregaria(Orthoptera: Acrididae)

2016 ◽  
Vol 16 (1) ◽  
pp. 33 ◽  
Author(s):  
Xingcong Jiang ◽  
Pablo Pregitzer ◽  
Ewald Grosse-Wilde ◽  
Heinz Breer ◽  
Jürgen Krieger
Author(s):  
Huiyuan Yang ◽  
Shuoying Ning ◽  
Xiao Sun ◽  
Chuan Chen ◽  
Lingxiao Liu ◽  
...  

Abstract Sensory neuron membrane proteins (SNMPs) in insects are critical peripheral olfactory proteins and act as markers for pheromone detection. However, the SNMPs for onion maggot, Delia antiqua Meigen, a world-wide subterranean pest, have not been previously characterized. In this study, we first report the cloning and characterization of two novel SNMPs from D. antiqua, DantSNMP1 and DantSNMP2. Sequence alignment and phylogenetic analysis showed that DantSNMP1 and DantSNMP2 are very similar to the previously reported SNMP1 and SNMP2 isolated from other dipteran insects but they share low identity with each other. Further expression profile experiments showed that DantSNMP1 is antenna-specific, while DantSNMP2 is expressed both in antennae and nonantennal tissues. Immunocytochemical localization experiments showed that DantSNMP1 was expressed only in sensilla trichodae, which suggests that this protein is involved in pheromone reception in insect olfaction.


Insects ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 350
Author(s):  
Pablo Pregitzer ◽  
Xingcong Jiang ◽  
René-Sebastian Lemke ◽  
Jürgen Krieger ◽  
Jörg Fleischer ◽  
...  

In the desert locust Schistocerca gregaria (S. gregaria), pheromones are considered to be crucial for governing important behaviors and processes, including phase transition, reproduction, aggregation and swarm formation. The receptors mediating pheromone detection in olfactory sensory neurons (OSNs) on the antenna of S. gregaria are unknown. Since pheromone receptors in other insects belong to the odorant receptor (OR) family and are typically co-expressed with the “sensory neuron membrane protein 1” (SNMP1), in our search for putative pheromone receptors of S. gregaria, we have screened the OR repertoire for receptor types that are expressed in SNMP1-positive OSNs. Based on phylogenetic analyses, we categorized the 119 ORs of S. gregaria into three groups (I–III) and analyzed a substantial number of ORs for co-expression with SNMP1 by two-color fluorescence in situ hybridization. We have identified 33 ORs that were co-expressed with SNMP1. In fact, the majority of ORs from group I and II were found to be expressed in SNMP1-positive OSNs, but only very few receptors from group III, which comprises approximately 60% of all ORs from S. gregaria, were co-expressed with SNMP1. These findings indicate that numerous ORs from group I and II could be important for pheromone communication. Collectively, we have identified a broad range of candidate pheromone receptors in S. gregaria that are not randomly distributed throughout the OR family but rather segregate into phylogenetically distinct receptor clades.


2014 ◽  
Vol 22 (3) ◽  
pp. 399-408 ◽  
Author(s):  
Jin Zhang ◽  
Yang Liu ◽  
William B. Walker ◽  
Shuang-Lin Dong ◽  
Gui-Rong Wang

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Sarfaraz Ahmad Ejazi ◽  
Anirban Bhattacharyya ◽  
Somsubhra Thakur Choudhury ◽  
Sneha Ghosh ◽  
Abdus Sabur ◽  
...  

Author(s):  
Yu Pan ◽  
Xinxin Zhang ◽  
Zhun Wang ◽  
Lizhong Qi ◽  
Xinsheng Zhang ◽  
...  

Abstract The rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae), is a destructive pest that causes damage to rice crops worldwide. The olfactory system is critical for host or mate location by weevils, but only limited information about the molecular mechanism of olfaction-related behaviour has been reported in this insect. In this study, we conducted SMRT-seq transcriptome analysis and obtained 54,378 transcripts, 38,706 of which were annotated. Based on these annotations, we identified 40 candidate chemosensory genes, including 31 odorant-binding proteins (OBPs), six chemosensory proteins (CSPs) and three sensory neuron membrane proteins (SNMPs). Phylogenetic analysis showed that LoryOBPs, LoryCSPs and LorySNMPs were distributed in various clades. The results of tissue expression patterns indicated that LoryOBPs were highly abundant in the antennae, whereas LoryCSPs were highly abundant not only in the antennae but also in the abdomen, head and wings. Our findings substantially expand the gene database of L. oryzophilus and may serve as a basis for identifying novel targets to disrupt key olfactory genes, potentially providing an eco-friendly strategy to control this pest in the future.


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