title: Identification and Expression Analysis of Putative Chemosensory Receptor Genes in Microplitis mediator by Antennal Transcriptome Screening.
abstract: Host-seeking, ovipositional behavior and mating of insects are controlled mainly by odor perception through sensory organs such as antennae. Antennal chemoreception is extremely important for insect survival. Several antennal chemosensory receptors are involved in mediating the odor detection in insects, especially the odorant receptors (ORs) and ionotropic receptors (IRs), to ensure the specificity of the olfactory sensory neuron responses. In the present study, we identified the chemosensory receptor gene repertoire of the parasitoid wasp Microplitis mediator, a generalist endoparasitoid that infests more than 40 types of Lepidopterous larvae and is widely distributed in the Palaearctic region. By transcriptome sequencing of male and female antennae we identified 60 candidate odorant receptors, six candidate ionotropic receptors and two gustatory receptors in M. mediator. The full-length sequences of these putative chemosensory receptor genes were obtained by using the rapid amplification of cDNA ends PCR (RACE-PCR) method. We also conducted reverse transcription PCR (RT-PCR) combined with real-time quantitative PCR (qPCR) for investigating the expression profiles of these chemosensory receptor genes in olfactory and non-olfactory tissues. The tissue- and sex-biased expression patterns may provide insights into the roles of the chemosensory receptor in M. mediator. Our findings support possible future study of the chemosensory behavior of M. mediator at the molecular level.
authors.affiliation: 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
authors.forename: Shan-Ning
authors.initials: SN
authors.lastname: Wang
authors.affiliation: 2. College of Plant Protection, Agricultural University of Hebei, Baoding 071000, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Peng
authors.affiliation: 3. IPM Center of Hebei Province, Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences, Baoding, Hebei 071000, China.
authors.forename: Zi-Yun
authors.initials: ZY
authors.lastname: Lu
authors.affiliation: 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China ; 5. Department of Entomology, Faculty of Crop Protection, Sindh Agricultural University Tandojam, Pakistan.
authors.forename: Khalid Hussain
authors.initials: KH
authors.lastname: Dhiloo
authors.affiliation: 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
authors.forename: Shao-Hua
authors.initials: SH
authors.lastname: Gu
authors.affiliation: 2. College of Plant Protection, Agricultural University of Hebei, Baoding 071000, China.
authors.forename: Rui-Jun
authors.initials: RJ
authors.lastname: Li
authors.affiliation: 4. Department of Biological Chemistry and Crop Protection, Rothamsted Research, Harpenden, AL5 2JQ, UK.
authors.forename: Jing-Jiang
authors.initials: JJ
authors.lastname: Zhou
authors.affiliation: 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
authors.forename: Yong-Jun
authors.initials: YJ
authors.lastname: Zhang
authors.affiliation: 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
authors.forename: Yu-Yuan
authors.initials: YY
authors.lastname: Guo
mesh_terms: D000818:Animals; D057506:Arthropod Antennae / Q000378:metabolism*; D001483:Base Sequence; D018076:DNA, Complementary / Q000235:genetics; D005260:Female; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation / Q000502:physiology*; D019476:Insect Proteins / Q000235:genetics* / Q000378:metabolism; D007814:Larva / Q000469:parasitology; D007915:Lepidoptera / Q000469:parasitology*; D008297:Male; D008969:Molecular Sequence Data; D060888:Real-Time Polymerase Chain Reaction; D058468:Receptors, Ionotropic Glutamate / Q000378:metabolism; D018035:Receptors, Odorant / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D011984:Sensory Receptor Cells / Q000378:metabolism*; D017422:Sequence Analysis, DNA; D059467:Transcriptome / Q000235:genetics / Q000502:physiology*; D014863:Wasps / Q000235:genetics*
chemical_list: D018076:DNA, Complementary; D019476:Insect Proteins; D058468:Receptors, Ionotropic Glutamate; D018035:Receptors, Odorant
keywords: Microplitis mediator; chemosensory receptor gene; expression profile; gustatory receptor; ionotropic receptor; odorant receptor