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  • Antennal ionotropic receptors IR64a1 and IR64a2 of the parasitoid wasp Microplitis mediator (Hymenoptera: Braconidate) collaboratively perceive habitat and host cues.

    Author(s) : Shan ShuangWang ShanNingSong XuanAdel KhashavehLu ZiYunKhalid Hussain DhilooLi RuiJunGao XiWuZhang YongJun

    Author Affiliation : State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.

    Author Email : yjzhang@ippcaas.cn

    Journal article : Insect Biochemistry and Molecular Biology 2019 Vol.114

    Abstract : Ionotropic receptorsreceptorsSubject Category: Anatomical and Morphological Structures
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    (IRs), as a member of the conserved chemoreceptor families in the peripheral nervous systemnervous systemSubject Category: Anatomical and Morphological Structures
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    , play a critical role in the chemoreception of DrosophiladrosophilaSubject Category: Organism Names
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    . However, little is known about IRs in HymenopterahymenopteraSubject Category: Organism Names
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    insectsinsectsSubject Category: Organism Names
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    . Here, we comprehensively characterized the gene structure, topological map and chemosensory roles of antennal IRs (MmedIRs) in the hymenopteran parasitoid wasp Microplitis mediatormicroplitis mediatorSubject Category: Organism Names
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    . We found that the IRs were conserved across various insect species. In the in situ hybridizationhybridizationSubject Category: Techniques, Methodologies and Equipment
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    assays, most IRs showed female antennaeantennaeSubject Category: Anatomical and Morphological Structures
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    biased features, and there was no co-expression of the IRs and the olfactory receptor co-receptor (ORco). Moreover, three IR co-expressed complexes, IR75u-IR8a, IR64a1-IR8a and IR64a2-IR8a, were detected. Two genesgenesSubject Category: Miscellaneous
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    with high similarity, IR64a1 and IR64a2, were located in distinct neuronsneuronsSubject Category: Anatomical and Morphological Structures
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    but projected to the same sensillum. In two-electrode voltage-clamp recordings, IR64a1 was widely tuned to the chemicalschemicalsSubject Category: Chemicals and Chemical Groups
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    from habitat cues released from host plantshost plantsSubject Category: Organism Groups
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    over long distances, whereas IR64a2 responded to a narrow range host cues and plant odors with low-volatility. Notably, IR64a2 was able to perceive Z9-14: Ald, a vital sex pheromone component that is released from Helicoverpa armigerahelicoverpa armigeraSubject Category: Organism Names
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    , which is the preferred host of M. mediator. Furthermore, most ligandsligandsSubject Category: Chemicals and Chemical Groups
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    of IR64a1 and IR64a2 can trigger electrophysiological responses in female wasps. We propose that IR64a1 and IR64a2 collaboratively perceive habitat and host cues to assist parasitoidsparasitoidsSubject Category: Organism Groups
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    in efficiently seeking hostshostsSubject Category: Organism Groups
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    .

    ISSN : 0965-1748

    DOI : 10.1016/j.ibmb.2019.103204

    Record Number : 20219942916

    Publisher : Elsevier Ltd

    Location of publication : Oxford

    Country of publication : UK

    Language of text : English

    Indexing terms for this abstract:

    Organism descriptor(s) : BraconidaebraconidaeSubject Category: Organism Names
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    , DrosophiladrosophilaSubject Category: Organism Names
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    , HelicoverpahelicoverpaSubject Category: Organism Names
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    , Helicoverpa armigerahelicoverpa armigeraSubject Category: Organism Names
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    , HymenopterahymenopteraSubject Category: Organism Names
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    , insectsinsectsSubject Category: Organism Names
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    , MicroplitismicroplitisSubject Category: Organism Names
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    , Microplitis mediatormicroplitis mediatorSubject Category: Organism Names
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    , plantsplantsSubject Category: Organism Names
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    Descriptor(s) : antennaeantennaeSubject Category: Anatomical and Morphological Structures
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    , breeding methodsbreeding methodsSubject Category: Techniques, Methodologies and Equipment
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    , chemicalschemicalsSubject Category: Chemicals and Chemical Groups
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    , chemoreceptorschemoreceptorsSubject Category: Chemicals and Chemical Groups
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    , genesgenesSubject Category: Miscellaneous
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    , host plantshost plantsSubject Category: Organism Groups
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    , hostshostsSubject Category: Organism Groups
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    , hybridizationhybridizationSubject Category: Techniques, Methodologies and Equipment
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    , insect pestsinsect pestsSubject Category: Organism Groups
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    , ligandsligandsSubject Category: Chemicals and Chemical Groups
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    , natural enemiesnatural enemiesSubject Category: Organism Groups
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    , nervous systemnervous systemSubject Category: Anatomical and Morphological Structures
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    , neuronsneuronsSubject Category: Anatomical and Morphological Structures
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    , parasitoidsparasitoidsSubject Category: Organism Groups
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    , plant pestsplant pestsSubject Category: Organism Groups
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    , receptorsreceptorsSubject Category: Anatomical and Morphological Structures
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    , sex pheromonessex pheromonesSubject Category: Chemicals and Chemical Groups
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    , arthropod pestsarthropod pestsSubject Category: Organism Groups
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    , pestspestsSubject Category: Organism Groups
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    , parasitesparasitesSubject Category: Organism Groups
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    Identifier(s) : African cotton bollworm, plant hosts, hostplants, pest insects, nerve cells, neurones, pest arthropods

    Broader term(s) : HymenopterahymenopteraSubject Category: Organism Names
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    , insectsinsectsSubject Category: Organism Names
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    , HexapodahexapodaSubject Category: Organism Names
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    , arthropodsarthropodsSubject Category: Organism Names
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    , invertebratesinvertebratesSubject Category: Organism Names
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    , animalsanimalsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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    , DrosophilidaedrosophilidaeSubject Category: Organism Names
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    , DipteradipteraSubject Category: Organism Names
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    , NoctuidaenoctuidaeSubject Category: Organism Names
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    , LepidopteralepidopteraSubject Category: Organism Names
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    , HelicoverpahelicoverpaSubject Category: Organism Names
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    , BraconidaebraconidaeSubject Category: Organism Names
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    , MicroplitismicroplitisSubject Category: Organism Names
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