Pengjun Xu

ORCID: 0000-0003-2020-1435
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About
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Research Areas
  • Insect-Plant Interactions and Control
  • Insect Resistance and Genetics
  • Neurobiology and Insect Physiology Research
  • Plant Virus Research Studies
  • Insect symbiosis and bacterial influences
  • Insect and Arachnid Ecology and Behavior
  • Insect and Pesticide Research
  • Toxic Organic Pollutants Impact
  • Viral Infectious Diseases and Gene Expression in Insects
  • CRISPR and Genetic Engineering
  • Plant and animal studies
  • Effects and risks of endocrine disrupting chemicals
  • Pesticide Residue Analysis and Safety
  • Insect Utilization and Effects
  • Entomopathogenic Microorganisms in Pest Control
  • Plant and Fungal Interactions Research
  • Legume Nitrogen Fixing Symbiosis
  • Air Quality and Health Impacts
  • Analytical Chemistry and Chromatography
  • Carcinogens and Genotoxicity Assessment
  • Heat shock proteins research
  • Virus-based gene therapy research
  • Plant tissue culture and regeneration
  • Plant Parasitism and Resistance
  • Antibiotics Pharmacokinetics and Efficacy

Tobacco Research Institute
2015-2024

Chinese Academy of Agricultural Sciences
2015-2024

Guilin University of Technology
2024

Lancaster University
2017-2021

Qingdao Academy of Agricultural Sciences
2021

Institute of Plant Protection
2012-2017

University of Chinese Academy of Sciences
2017

Dalian Institute of Chemical Physics
2015-2017

Chinese Academy of Sciences
2009-2017

Dalian University of Technology
2015-2017

Abstract The rapid wide‐scale spread of fall armyworm ( Spodoptera frugiperda ) has caused serious crop losses globally. However, differences in the genetic background subpopulations and mechanisms adaptation behind invasion are still not well understood. Here we report assembly a 390.38‐Mb chromosome‐level genome derived from south‐central Africa using Pacific Bioscience (PacBio) Hi‐C sequencing technologies, with scaffold N50 12.9 Mb containing 22,260 annotated protein‐coding genes....

10.1111/1755-0998.13219 article EN cc-by Molecular Ecology Resources 2020-07-03

Fall armyworm has invaded China and colonized its populations in tropical sub-tropical regions of South since December 2018. Chemical spray been widely used to control the pest, which shall lead resistance evolution. In this research, we collected five pest from Yunnan, Hainan, Tibet, Fujian China, tested their susceptibilities pyrethroid, organophosphorus, oxadiazine, diamide, antibiotics other types insecticides (14 totally) laboratory. Based on susceptible baseline published previous...

10.1016/s2095-3119(20)63392-5 article EN cc-by-nc-nd Journal of Integrative Agriculture 2021-02-16

Mutualistic associations between symbiotic bacteria and their hosts are common within insect systems. However, viruses often considered as pathogens even though some have been reported to be beneficial hosts. Herein, we report a novel densovirus, Helicoverpa armigera densovirus-1 (HaDNV-1) that appears its host. HaDNV-1 was found widespread in wild populations of H. adults (>67% prevalence 2008 2012). In larval populations, there clear negative interaction nucleopolyhedrovirus (HaNPV),...

10.1371/journal.ppat.1004490 article EN cc-by PLoS Pathogens 2014-10-30

The application of RNA interference (RNAi) technology for pest control is environmentally friendly and accurate. However, the efficiency RNAi often inconsistent unreliable, finding a suitable carrier element considered critical to success in overcoming biotic abiotic barriers reach target site. fall armyworm, Spodoptera frugiperda (FAW), which one most important global agricultural pests, has recently spread rapidly other parts world. In this study, method improve stability dsRNA complex was...

10.1021/acsami.2c20151 article EN ACS Applied Materials & Interfaces 2023-03-07

Recent advances in next generation sequencing (NGS) (e.g. metagenomic and transcriptomic sequencing) have facilitated the discovery of a large number new insect viruses, but characterization these viruses is still its infancy. Here, we report discovery, using RNA-seq, three partiti-like from African armyworm, Spodoptera exempta (Lepidoptera: Noctuidae), which are all vertically-transmitted transovarially mother to offspring with high efficiency. Experimental studies show that reduce their...

10.1371/journal.ppat.1008467 article EN cc-by PLoS Pathogens 2020-06-22

Uridine diphosphate (UDP)-glycosyltransferases (UGTs) are major phase II detoxification enzymes involved in glycosylation of lipophilic endobiotics and xenobiotics, including phytoalexins. Nicotine, one the most abundant secondary plant metabolites tobacco, is highly toxic to herbivorous insects. Plant-herbivore competition impetus for evolution large superfamilies UGTs other enzymes. However, UGT functions green peach aphid (Myzus persicae) adaptation unknown. In this study, we show that...

10.3390/ijms20153637 article EN International Journal of Molecular Sciences 2019-07-25

Atmospheric concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polybrominated (PBDD/Fs), diphenyl ethers (PBDEs) were measured in Taizhou, a large electronic equipment waste (e-waste) recycling area East China. The mean (in summer winter) PCDD/Fs (0.45 0.39 pg WHO-TEQ m−3, where is the toxic equivalent set by World Health Organisation), PBDD/Fs (0.22 0.18 m−3), PBDEs (270 225 m−3) this region have declined compared with those 2005, due to regulations on...

10.1039/c2em30648d article EN Journal of Environmental Monitoring 2012-01-01

Abstract The rapid wide-scale spread of fall armyworm ( Spodoptera frugiperda ) has caused serious crop losses globally. However, differences in the genetic background subpopulations and mechanisms adaptation behind invasion are still not well understood. Here we report a 393.25-M chromosome-level genome assembly with scaffold N50 13.3 M consisting 23281 annotated protein-coding genes. Genome-wide resequencing 105 samples from 16 provinces China revealed that population comprises complex...

10.1101/813154 preprint EN cc-by-nc bioRxiv (Cold Spring Harbor Laboratory) 2019-10-21

The insect gut microbiota forms a complex, multifunctional system that significantly affects phenotypic traits linked to environmental adaptation. Strong reproductive potential underpins the migratory success, population growth and destructive impact of fall armyworm, Spodoptera frugiperda (J.E. Smith). However, precise role bacteria in S. processes, distribution transmission dynamics remains unclear. We examined major invasive agricultural pest, identifying Enterococcus, Enterobacter,...

10.1186/s40168-025-02121-x article EN cc-by-nc-nd Microbiome 2025-05-23

Nicotine is one of the most toxic secondary plant metabolites in nature and it highly to herbivorous insects. The overexpression CYP6CY3 its homologous isozyme CYP6CY4 Myzus persicae nicotianae correlated with nicotine tolerance. expanded (AC)n repeat promoter cis element for transcription. These sequences are conserved gene from Aphis gossypii P450 genes Acyrthosiphon pisum. potential transcriptional factors that may regulate were isolated by DNA pulldown sequenced order investigate...

10.3390/ijms20184521 article EN International Journal of Molecular Sciences 2019-09-12

The interactions among plant viruses, insect vectors, and host plants have been well studied; however, the roles of viruses in this system largely neglected. We investigated effects MpnDV infection on aphid PVY transmission using bioassays, RNA interference (RNAi), GC-MS methods green peach (Myzus persicae (Sulzer)), potato virus Y (PVY), densovirus nicotianae densovirus, MpnDV) as model systems. increased activities its host, promoting population dispersal leading to significant...

10.1111/nph.19908 article EN New Phytologist 2024-06-21

Because visual genes likely evolved in response to their ambient photic environment, the dichotomy between closely related nocturnal moths and diurnal butterflies forms an ideal basis for investigating evolution. To investigate whether of are associated with dim-light environments or not, we cloned long-wavelength (R), blue (B) ultraviolet (UV) opsin from 12 species wild-captured examined evolutionary functions. Strong purifying selection appeared constrain functions genes. Dark-treatment...

10.1371/journal.pone.0078140 article EN cc-by PLoS ONE 2013-10-30

Retrotransposed genes are different to other types of as they originate from a processed mRNA and then inserted back into the genome. For long time, contribution this mechanism origin new genes, hence evolutionary process, has been questioned retrogenes usually lose their regulatory sequences upon insertion generally decay pseudogenes. In recent years, there is growing evidence, notably in mammals, that retrotransposition an important process driving but evidence insects remains largely...

10.1186/s13100-016-0074-8 article EN cc-by Mobile DNA 2016-10-19

Polygalacturonase (PG) is an enzyme in the salivary glands of piercing-sucking mirid bugs (Hemiptera: Miridae) that plays a key role plant feeding and injury. By constructing full-length cDNA library, we cloned characterized 14 PG genes from Apolygus lucorum, pestiferous bug cotton, fruit trees other crops China. BLAST search analysis showed amino acid sequences deduced transcripts were closely related to PGs bugs. Phylogenetic had six main branches, PG1-PG6 (Genbank accession numbers:...

10.1371/journal.pone.0126391 article EN cc-by PLoS ONE 2015-05-08
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