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Front Physiol


Title:A mouthpart transcriptome for Spodoptera frugiperda adults: identification of candidate chemoreceptors and investigation of expression patterns
Author(s):Dong JF; Hu ZJ; Dong BX; Tian CH;
Address:"College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, Henan Province, China. Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou, Henan Province, China"
Journal Title:Front Physiol
Year:2023
Volume:20230425
Issue:
Page Number:1193085 -
DOI: 10.3389/fphys.2023.1193085
ISSN/ISBN:1664-042X (Print) 1664-042X (Electronic) 1664-042X (Linking)
Abstract:"Moth mouthparts, consisting of labial palps and proboscis, not only are the feeding device but also are chemosensory organs for the detection of chemical signals from surrounding environment. Up to now, the chemosensory systems in the mouthpart of moths are largely unknown. Here, we performed systematic analyses of the mouthpart transcriptome of adult Spodoptera frugiperda (Lepidoptera: Noctuidae), a notorious pest that spreads worldwide. A total of 48 chemoreceptors, including 29 odorant receptors (ORs), 9 gustatory receptors (GRs), and 10 ionotropic receptors (IRs), were annotated. Further phylogenetic analyses with these genes and homologs from other insect species determined that specific genes, including ORco, carbon dioxide receptors, pheromone receptor, IR co-receptors, and sugar receptors, were transcribed in the mouthpart of S. frugiperda adults. Subsequently, expression profiling in different chemosensory tissues demonstrated that the annotated ORs and IRs were mainly expressed in S. frugiperda antennae, but one IR was also highly expressed in the mouthparts. In comparison, SfruGRs were mainly expressed in the mouthparts, but 3 GRs were also highly expressed in the antennae or the legs. Further comparison of the mouthpart-biased chemoreceptors using RT-qPCR revealed that the expression of these genes varied significantly between labial palps and proboscises. This study provides the first large-scale description of chemoreceptors in the mouthpart of adult S. frugiperda and provides a foundation for further functional studies of chemoreceptors in the mouthpart of S. frugiperda as well as of other moth species"
Keywords:Spodoptera frugiperda chemoreceptor expression profiling mouthpart transcriptome;
Notes:"PubMed-not-MEDLINEDong, Jun-Feng Hu, Zhen-Jie Dong, Bing-Xin Tian, Cai-Hong eng Switzerland 2023/05/14 Front Physiol. 2023 Apr 25; 14:1193085. doi: 10.3389/fphys.2023.1193085. eCollection 2023"

 
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