Publications by authors named "Desen Wang"

Article Synopsis
  • Infection with pathogens like "Liberibacter asiaticus" and certain fungi can enhance the reproductive ability (fecundity) of insect vectors, which is beneficial for the pathogens.
  • This study focuses on the roles of specific microRNAs (miR-2 and novel-miR-109) in regulating these fecundity changes and found that lower levels of these miRNAs in the ovaries of infected insects are linked to increased fecundity and pathogen presence.
  • The findings suggest that a conserved mechanism exists where juvenile hormone suppresses these miRNAs, leading to altered gene expression that boosts female insect reproduction in the presence of bacterial and fungal infections.
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serves as the primary vector for ' Liberibacter asiaticus (Las),' the bacterium associated with the severe Asian form of huanglongbing. Las-positive are more fecund than their Las-negative counterparts and require extra energy expenditure. Therefore, understanding the molecular mechanisms linking metabolism and reproduction is of particular importance.

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Background: Over the past two decades, bed bugs (Cimex spp.) have resurged as common urban pests around the world. The search for efficient and safe control measures has become a key interest among researchers, manufacturers, and pest control professionals.

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Hot water mound drench treatment has broad application prospects in the control of the red imported fire ant (RIFA), Solenopsis invicta Buren (Hymenoptera: Formicidae). However, much work still needs to be carried out to provide a theoretical basis and technical support for the use of this method against RIFAs under field conditions. In this study, we monitored the temperature changes at different depths within RIFA nests during laboratory-simulated hot water mound drench experiments and evaluated the lethal effect of hot water treatment on RIFAs.

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The N-methyladenosine (mA) modification of RNA has been reported to remodel gene expression in response to environmental conditions; however, the biological role of mA in social insects remains largely unknown. In this study, we explored the role of mA in the division of labour by worker ants (Solenopsis invicta). We first determined the presence of mA in RNAs from the brains of worker ants and found that mA methylation dynamics differed between foragers and nurses.

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Article Synopsis
  • Scientists study how insects and the germs that make them sick interact, especially a bug called Diaphorina citri and a germ known as CLas, which causes a plant disease.
  • When the bug has CLas, it can lay more eggs than when it doesn't have it, but how this happens is still a mystery.
  • Researchers found that CLas changes the bug's body and uses some special molecules (like miR-275) to help it have more babies, which also helps the germ spread more easily.
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Background: The bites and blood sucking of bed bugs (Cimex spp.) (Hemiptera: Cimicidae) pose a serious threat to human physical and mental health. Application of an effective repellent can prevent or reduce bed bug bites.

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Huanglongbing, a globally devastating citrus disease, is associated with Liberibacter asiaticus (Las) and is mainly transmitted by . Verification of the distribution and dynamics of Las in is critical to understanding Las transmitted by vectors in nature. Here, the distribution and titers of Las in different sexes and tissues of adults were investigated by fluorescence in-situ hybridization (FISH) and quantitative real-time PCR (qRT-PCR).

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Fusarium concentricum Nirenberg & O' Donnell (Ascomycota: Hypocreales) is a fungal species known to infect plants, but never reported as entomopathogenic. Polychrosis cunninhamiacola Liu et Pei (Lepidoptera: Tortricidae: Olethreutinae) is a major and widespread insect pest causing economic losses to cultivated Chinese fir Cunninghamia lanceolata (Lamb.) Hook.

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The tropical bed bug, (F.) (Hemiptera: Cimicidae) is an important public-health pest that feeds on the blood of humans and some other animals. To explore the function of the target genes of , it is essential to select suitable reference genes for the accurate quantification of gene expression.

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Article Synopsis
  • The melon fruit fly (Bactrocera cucurbitae) and pumpkin fruit fly (Bactrocera tau) are invasive pests that significantly affect cucurbit crops, and their susceptibility to five insecticides was tested.
  • Trichlorfon was found to be the most effective insecticide, significantly reducing the lifespan and reproductive capacity of both fruit fly species when exposed to sublethal doses.
  • While sublethal concentrations affected survival and fecundity, they did not impact egg hatchability; however, some ovarian development metrics were decreased, suggesting potential long-term effects on reproduction.
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Riley is an important natural enemy and biological control agent of lepidopteran pests. is an intracellular endosymbiont that induces parthenogenesis in the parasitoid . In this paper, the sublethal effects of the antibiotic tetracycline hydrochloride on the development and reproduction of were studied.

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Tacrolimus is an important immunosuppressant produced by microbial fermentation. In this study, a modified nanoscale polymeric adsorbent, Ag-exchanged resin, was prepared and studied for the preparative separation and purification of tacrolimus from fermentation broth of Streptomyces tsukubaensis. The performance and absorption characteristics of the modified nanoscale polymeric adsorbent namely Ag-NPS was evaluated.

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Numerous bed bug research papers have been published in the past 20 yr as a result of bed bug (Cimex spp.) (Hemiptera: Cimicidae) resurgence in the world. Yet, few of them focused on the management of the tropical bed bug, C.

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is the mainly transmitting vector of the citrus huanglongbing pathogen, which causes severe losses in in the citrus industry. In this study, we isolated a new entomopathogenic fungus, identified as member of based on morphology and ITS sequence analysis. We named SCAU-CFDC01 and evaluated its pathogenicity against nymphs and adults by immersion under laboratory and greenhouse conditions.

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Preharvest sprouting (PHS) significantly reduces grain yield and quality. Identification of genetic loci for PHS resistance will facilitate breeding sprouting-resistant wheat cultivars. In this study, we constructed a genetic map comprising 1,702 non-redundant markers in a recombinant inbred line (RIL) population derived from cross Yangxiaomai/Zhongyou9507 using the wheat 15K single-nucleotide polymorphism (SNP) assay.

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Rht-B1b and Rht-D1b, the 'Green Revolution' (GR) genes, greatly improved yield potential of wheat under nitrogen fertilizer application, but reduced coleoptile length, seedling vigor and grain weight. Thus, mining alternative reduced plant height genes without adverse effects is urgently needed. We isolated the causal gene of Rht24 through map-based cloning and characterized its function using transgenic, physiobiochemical and transcriptome assays.

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In order to investigate the effect of Wolbachia on fitness of their hosts, the biological characteristics of a primarily parthenogenetic line and a bisexual restored line (obtained by antibiotic treatment) of Trichogramma pretiosum were compared in the laboratory. Results indicated that both the mean longevity and fecundity of parthenogenetic line (14.2 d and 165 eggs/female) were significantly higher than those in bisexual restored line (8.

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Bed bugs (Cimex spp.) (Hemiptera: Cimicidae) are obligatory blood-sucking insects. Research on their behavioral response to host-derived olfactory cues will be helpful for designing more effective management tools.

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Objective: This study was conducted to enhance the production of tacrolimus in Streptomyces tsukubaensis by strain mutagenesis and optimization of the fermentation medium.

Results: A high tacrolimus producing strain S. tsukubaensis FIM-16-06 was obtained by ultraviolet mutagenesis coupled with atmospheric and room temperature plasma mutagenesis.

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The entomopathogenic fungus, is a potential eco-friendly biocontrol agent. The present study revealed the entire course of infection of by with particular reference to cuticular penetration. Comparative studies on the infection of larvae by two strains of with different pathogenicity were carried out using light, scanning, and transmission electron microscopy.

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From the 1960s to the 1980s, with the implementation of nationwide 'Four-Pest Elimination' campaigns (bed bugs, Cimex lectularius L. and Cimex hemipterus (F.) (Hemiptera: Cimicidae), were listed as one of the targeted pests), bed bug infestations were gradually eliminated in most provinces in China.

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The removal of corpses (aka 'necrophoric behavior') is critical to sanitation in ant colonies. However, little is known about differences in the necrophoric responses of Solenopsis invicta workers towards corpses of nestmates and non-nestmates. We introduced corpses of S.

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