Publications by authors named "Qiuju Qin"

Insulin-like peptides (ILPs) are important peptide hormones in insects, particularly involved in regulating physiological processes such as growth, development, and reproduction. However, the specific roles of ILPs in the reproduction of natural enemy insects remain unknown. In this study, two ILP genes, and , were cloned and their functions were analyzed in female L.

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, an obligate endosymbiont of most aphid species, can influence aphids' host adaptability through amino acid metabolism, potentially mediating biotype differentiation. However, its role in the biotype differentiation of remains unclear. To address this issue, six biotypes were tested in this study.

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Silicoaluminate zeolites have relatively strong Brönsted (B) acid properties that can easily lead to deep cracking reactions, making them less favourable as carriers for propane dehydrogenation. Here, we utilise zincosilicate zeolite with less B-acid produced by the introduction of the heteroatom Zn into the framework as a carrier, followed by simultaneous ion exchange (IE) of M monometallic or PtM bimetallic (M=Cu, Zn and Ga, etc.).

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Article Synopsis
  • Intestinal symbiotic bacteria have evolved alongside certain insects, significantly impacting their growth and adaptation.
  • J. E. Smith, a major invasive pest, threatens over 350 plant species and food security, highlighting the importance of understanding its gut bacteria.
  • Analysis of gut bacteria revealed that diet affects bacterial diversity, with rice-based diets promoting the highest diversity and honeysuckle flowers the lowest; dominant bacterial groups included Firmicutes, Actinobacteriota, and Proteobacteria.
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Article Synopsis
  • The seven-spot ladybird beetle (Coccinella septempunctata) is an important natural predator of aphids, but its offspring are adversely affected by the neonicotinoid insecticide thiamethoxam.
  • Research found that exposure to sublethal doses of thiamethoxam prolonged the development and reproductive periods of the ladybird beetle, while decreasing its overall fecundity and longevity over generations.
  • The study highlighted that the sublethal effects of thiamethoxam significantly reduced population growth parameters and predation efficiency in the ladybird beetle, indicating broader ecological concerns.
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Vitellogenin receptors (VgRs) have vital roles in reproduction by mediating endocytosis of the vitellogenin (Vg) in oviparous insects. Same as most insect species that possess only one VgR, in this study, a single VgR mRNA (HmVgR) was identified in an important natural enemy ladybeetle, Harmonia axyridis (Pallas). The open reading frame of HmVgR was 5,340 bases encoding a protein of 1,779 amino acids.

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As an accurate and convenient technique, the qRT-PCR is always used in the quantitative expression analysis of functional genes. Normalization of the data relies on stable reference genes. The fall armyworm (J.

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A series of MOFs with a 6-connected spn topology were synthesized (MOF-808-(Zr, Hf), PCN-777-(Zr, Hf), MOF-818-(Zr, Hf)). Through the in situ DRIFTS of NH adsorption-desorption, we found that the activated catalyst mainly contains Lewis acid sites. The effects of different organic ligands on the Lewis acid of the Zr cluster were analyzed by XPS and NH -TPD, and the relative Lewis acidity of the same metal was obtained: PCN-777>MOF-808>MOF-818.

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An accurate olfactory system for recognizing semiochemicals and environmental chemical signals plays crucial roles in survival and reproduction of insects. Among all olfaction-related proteins, olfactory receptors (ORs) contribute to the conversion of chemical stimuli to electric signals and thereby are vital in odorant recognition. Olfactory receptor co-receptor (Orco), one of the most conserved ORs, is extremely essential in recognizing odorants through forming a ligand-gated ion channel complex with conventional ligand-binding odorant receptors.

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Monometallic and bimetallic MOF-74-M (M = Mn, Co, Ni, Zn, MnCo, MnNi, and MnZn) catalysts were prepared by the solvothermal method for NH-SCR. XRD, BET, SEM, and EDS-mapping tests indicate the successful synthesis of the MOF-74-M catalyst with uniform distribution of metal elements and large specific surface area, and the morphology is almost hexagonal. Adding Mn element to a single-metal catalyst can enhance activity, which is mainly because of the existence of various valence states of Mn so that it has excellent redox properties; the catalytic activity of water and sulfur resistance tests showed that the catalytic activity of MOF-74-M increases after adding a proper amount of SO, mainly because of the increase in acidic sites.

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Klebsiella pneumoniae was isolated from infected pupae of Galleria mellonella and Pseudomonas aeruginosa was isolated from the entomopathogenic nematode Heterorhabditis bacteriophora hosted within the pupae of G. mellonella. Insect consumption and surface application of P.

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In this work, mesoporous Ni-Co composite oxides were synthesized by a facile liquid-precipitation method without the addition of surfactant, and their ability to catalyse a low temperature CO oxidation reaction was investigated. To explore the effect of the synergetic interaction between Ni and Co on the physicochemical properties and catalytic performance of these catalysts, the as-prepared samples were characterized using XRF, XRD, LRS, N-physisorption (BET), SEM, TEM, XPS, H-TPR, O-TPD and DRIFTS characterization techniques. The results are as follows: (1) the doping of cobalt can reduces the size of NiO, thus massive amorphous NiO have formed and highly dispersed on the catalyst surface, resulting in the formation of abundant surface Ni ions; (2) Ni ions partially substitute Co ions to form a Ni-Co spinel solid solution, generating an abundance of surface oxygen vacancies, which are vital for CO oxidation; (3) the NiCo catalyst exhibits the highest catalytic activity and a satisfactory stability for CO oxidation, whereas a larger cobalt content results in a decrease in activity, suggesting that the amorphous NiO phase is the dominant active phase instead of CoO for CO oxidation; (4) the introduction of Co can alter the morphology of catalyst from plate-like to flower-like and then to dense granules.

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