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Ionotropic receptors (IRs) mainly detect the acids and amines having great importance in many insect species, representing an ancient olfactory receptor family in insects. In the present work, we performed RNAseq of Microplitis mediator antennae and identified seventeen IRs. Full-length MmedIRs were cloned and sequenced. Phylogenetic analysis of the Hymenoptera IRs revealed that ten MmedIR genes encoded “antennal IRs” and seven encoded “divergent IRs”. Among the IR25a orthologous groups, two genes, MmedIR25a.1 and MmedIR25a.2, were found in M. mediator. Gene structure analysis of MmedIR25a revealed a tandem duplication of IR25a in M. mediator. The tissue distribution and development specific expression of the MmedIR genes suggested that these genes showed a broad expression profile. Quantitative gene expression analysis showed that most of the genes are highly enriched in adult antennae, indicating the candidate chemosensory function of this family in parasitic wasps. Using immunocytochemistry, we confirmed that one co-receptor, MmedIR8a, was expressed in the olfactory sensory neurons. Our data will supply fundamental information for functional analysis of the IRs in parasitoid wasp chemoreception. 相似文献
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Transcriptome sequencing reveals abundant olfactory genes in the antennae of the rice leaffolder,Cnaphalocrocis medinalis (Lepidoptera: Pyralidae) 下载免费PDF全文
Su Liu Wen‐Long Wang Yu‐Xing Zhang Bang‐Xian Zhang Xiang‐Jun Rao Xiao‐Ming Liu Dong‐Ming Wang Shi‐Guang Li 《Entomological Science》2017,20(1):177-188
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