8 results found
    1. Ecology

    Rapid spread of a densovirus in a major crop pest following wide-scale adoption of Bt-cotton in China

    Yutao Xiao et al.
    Exposure to Bacillus thuringiensis (Bt) selects for beneficial interactions between the target insect pest (Helicoverpa armigera) and its symbiotic densovirus that enhances its performance on Bt-crops under field conditions.
    1. Neuroscience

    Two single-point mutations shift the ligand selectivity of a pheromone receptor between two closely related moth species

    Ke Yang et al.
    Differing from its ortholog in Helicoverpa armigera, pheromone receptor HassOr14b is tuned to the major sex pheromone component in H. assulta, and two amino acids in the intracellular domain determine their ligand selectivity.
    1. Neuroscience

    Distinct protocerebral neuropils associated with attractive and aversive female-produced odorants in the male moth brain

    Jonas Hansen Kymre et al.
    Electrophysiological and morphological identification of individual pheromone projection neurons in male moth reveals a coding system for optimizing mate search strategy, including computation of three female-produced signals in distinct protocerebral regions.
    1. Ecology

    A moth odorant receptor highly expressed in the ovipositor is involved in detecting host-plant volatiles

    Rui-Ting Li et al.
    A moth can detect plant volatiles using an odorant receptor expressing in its ovipositor, and this odorant receptor has a much higher expression level in the ovipositor than antennae.
    1. Ecology

    Volatile DMNT directly protects plants against Plutella xylostella by disrupting the peritrophic matrix barrier in insect midgut

    Chen Chen et al.
    The natural volatile component DMNT protects plants from insect attacks by damaging peritropic matrix barriers in insect midguts, paving a promising way for the molecular breeding of plant protection.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Structures of diverse poxin cGAMP nucleases reveal a widespread role for cGAS-STING evasion in host–pathogen conflict

    James B Eaglesham et al.
    Poxin enzymes are a diverse family of insect and viral 2′3′-cGAMP nucleases, which evolved from self-cleaving RNA virus accessory proteases.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Apicomplexan-like parasites are polyphyletic and widely but selectively dependent on cryptic plastid organelles

    Jan Janouškovec et al.
    Apicomplexan-like parasites originated several times independently and many of them contain cryptic plastid organelles, which demonstrate that the parasites evolved from photosynthetic algae.
    1. Ecology

    Plant-associated CO2 mediates long-distance host location and foraging behaviour of a root herbivore

    Carla CM Arce et al.
    The larvae of the western corn rootworm use root-emitted CO2 to successfully locate the most suitable host plant.

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