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学者姓名:侯有明

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The OnSPN2 from the nipa palm hispid beetle Octodonta nipae is a multipurpose defense tool against proteases from different peptidase families SCIE
期刊论文 | 2025 | INSECT SCIENCE
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Serpins (serine protease inhibitors) constitute a superfamily of proteins with functional diversity and unusual conformational flexibility. In insects, serpins act as multiple inhibitors, by forming inactive acyl-enzyme complexes, in regulating Sp & auml;tzles activation, phenoloxidases (POs) activity, and other cytokines. In this study, we present the cloning and characterization of Octodonta nipae serpin2 (OnSPN2), a 415 residues protein homologous to Tenebrio molitor 42Dd-like. Notably, OnSPN2 features an arginine residue (R364) at the P1 position, and additional arginine residues (R362, R367) at the P3 and P3 ' positions, respectively which is crucial for protease inhibition. Immunohistochemistry (IHC) and Western blot analyses revealed that OnSPN2 is primarily synthesized in plasmatocytes and then released into the plasma to exert its function. RNA interference results indicated that OnSPN2 knockdown may depress serine protease in melanization and remarkably increase the transcript level of Attacin in hemolymph, but its messenger RNA levels were not changed upon immune induction. Reciprocal co-immunoprecipitation assay results confirmed that OnSPN2 binds to OnPPAF1 and OnSP8, indicating its role as a negative regulator in the PO and AMP pathway. Intriguingly, several cathepsin-L isoforms were identified in the OnSPN2 immunoprecipitated samples. The cathepsin-L inhibition assays and protein-protein docking results, identified cathepsin-L as a potential target of OnSPN2. These results indicate that OnSPN2 is produced as an intracellular resident and additionally is associated with the PO and AMP pathway. OnSPN2 represents a multiple defense tool that may provide multiple antiproteolytic functions.

Keyword :

cathepsin-L cathepsin-L Octodonta nipae Octodonta nipae phenoloxidase cascade phenoloxidase cascade serine protease serine protease serpin serpin

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GB/T 7714 Zhang, Huajian , Xu, Jiawei , Chen, Mintao et al. The OnSPN2 from the nipa palm hispid beetle Octodonta nipae is a multipurpose defense tool against proteases from different peptidase families [J]. | INSECT SCIENCE , 2025 .
MLA Zhang, Huajian et al. "The OnSPN2 from the nipa palm hispid beetle Octodonta nipae is a multipurpose defense tool against proteases from different peptidase families" . | INSECT SCIENCE (2025) .
APA Zhang, Huajian , Xu, Jiawei , Chen, Mintao , Yin, Jiawei , Hou, Youming , Tang, Baozhen . The OnSPN2 from the nipa palm hispid beetle Octodonta nipae is a multipurpose defense tool against proteases from different peptidase families . | INSECT SCIENCE , 2025 .
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Allicin impacts the susceptibility of Spodoptera exigua to nucleopolyhedrovirus SCIE
期刊论文 | 2025 , 98 (2) , 747-757 | JOURNAL OF PEST SCIENCE
WoS CC Cited Count: 2
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Plant secondary metabolites are crucial in affecting the interactions between insect herbivores and entomoviruses. However, there is limited knowledge regarding the impact of such metabolites on the susceptibility of insect herbivores to entomoviruses. In this study, we adopted the allicin, caterpillars (Spodoptera exigua) and nucleopolyhedrovirus (SeMNPV) as a system, and found that allicin significantly increased the mortality of S. exigua larvae infected with SeMNPV by 36.03-59.45% when infected with the virus at a concentration of 2.12 x 10(3) OBmL(-1). Furthermore, NPV-infected larvae together treated with allicin inhibited the growth and development of larvae, comparing to individual NPV-infected larvae. Notably, we observed a significant enrichment of differentially expressed genes involved in the cytochrome P450-mediated metabolism pathway between the NPV-infected and allicin combined with NPV-treated groups. The silencing of CYP340AA1 through RNA interference significantly increased the mortality of larvae infected with SeMNPV. This investigation indicates that allicin might be a potential candidate for improving the performance of the NPV against insect herbivores and identifies that CYP340AA1 gene is important in this process.

Keyword :

Allicin Allicin RNA interference RNA interference RNA-Seq RNA-Seq Spodoptera exigua Spodoptera exigua Spodoptera exigua multiple nucleopolyhedrovirus Spodoptera exigua multiple nucleopolyhedrovirus

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GB/T 7714 Wang, Jin-Yan , Jiang, Jie-Xian , Fan, Neng-Neng et al. Allicin impacts the susceptibility of Spodoptera exigua to nucleopolyhedrovirus [J]. | JOURNAL OF PEST SCIENCE , 2025 , 98 (2) : 747-757 .
MLA Wang, Jin-Yan et al. "Allicin impacts the susceptibility of Spodoptera exigua to nucleopolyhedrovirus" . | JOURNAL OF PEST SCIENCE 98 . 2 (2025) : 747-757 .
APA Wang, Jin-Yan , Jiang, Jie-Xian , Fan, Neng-Neng , Wu, Hua-Wu , Ji, Xiang-Yun , Wan, Nian-Feng et al. Allicin impacts the susceptibility of Spodoptera exigua to nucleopolyhedrovirus . | JOURNAL OF PEST SCIENCE , 2025 , 98 (2) , 747-757 .
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Adaptability Analysis of Tuta absoluta to Different Hosts and Related Salivary Genes Identification SCIE
期刊论文 | 2025 , 73 (5) , 2814-2829 | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
WoS CC Cited Count: 3
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Tuta absoluta is a significant agricultural pest primarily affecting Solanaceae plants, resulting in substantial economic losses in agriculture. Insect saliva is an intermediary between insects and plants, playing a crucial role in modulating host adaptability and plant defense. This study analyzed the adaptive differences of T. absoluta on four plants using the two-sex life table method. Results indicated that the host adaptability of T. absoluta to tobacco is worse than its adaptability to the other three varieties of tomatoes. The salivary gland transcriptome analysis and signal peptide prediction revealed that Trypsin, B5 V51-1498, and Ta74 were highly expressed in the salivary glands of T. absoluta subjected to tobacco treatment and exhibit the characteristics of secretory proteins, alongside significant feeding selection differences. Our findings elucidate the adaptive strategies of T. absoluta larvae on various Solanaceae plants and offer new insights into the salivary protein-mediated plant defense processes.

Keyword :

host adaptation host adaptation interaction interaction salivary protein salivary protein transcriptome transcriptome Tuta absoluta Tuta absoluta

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GB/T 7714 Li, Xiujie , Cai, Xiangyun , Shang, Luohua et al. Adaptability Analysis of Tuta absoluta to Different Hosts and Related Salivary Genes Identification [J]. | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY , 2025 , 73 (5) : 2814-2829 .
MLA Li, Xiujie et al. "Adaptability Analysis of Tuta absoluta to Different Hosts and Related Salivary Genes Identification" . | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 73 . 5 (2025) : 2814-2829 .
APA Li, Xiujie , Cai, Xiangyun , Shang, Luohua , Wang, Yuzhou , Haq, Inzamam Ul , Wang, Jinda et al. Adaptability Analysis of Tuta absoluta to Different Hosts and Related Salivary Genes Identification . | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY , 2025 , 73 (5) , 2814-2829 .
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黑腹果蝇Y染色体在精子竞争效能和生殖成功中的作用
期刊论文 | 2025 , 34 (03) , 295-306 | 生物安全学报(中英文)
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[目的]分析黑腹果蝇Y染色体对雄性个体P1 (雄性个体以第一次序与雌性个体交配后所产后代的父权比例)和P2 (雄性个体以第二次序与雌性个体交配后所产后代的父权比例)2种类型精子竞争的影响,明确2种类型精子竞争在雄性个体生殖成功中的贡献,以及黑腹果蝇Y染色体在雄性个体生殖成功的潜在作用。[方法]选择黑腹果蝇等基因品系4361雌性个体作为Y染色体受体,野外采集的单雌系黑腹果蝇雄性个体作为Y染色体的供体,通过实验室连续多代的回交试验,构建黑腹果蝇不同Y染色体种群的纯合子品系。分别设计P1和P2 2种类型精子竞争试验和终生生殖成功试验,根据构建的黑腹果蝇纯合子品系所携带的隐性纯合标记性状,通过后代个体的复眼颜色快速地进行父权鉴定。利用含有不同复眼颜·色:后代个体的数量和比例分析P1和P2 2种类型精子竞争的效能及其在雄性个体生殖成功中的贡献。[结果]在黑腹果蝇P1和P2 2种类型精子竞争试验中,来自不同Y染色体种群的雄性个体交配成功后所产后代个体的数量和比例均存在显著性差异。对P1和P2 2种类型精子竞争父权成功的分析表明,Y染色体种群雄性个体在P2型精子竞争试验中(后代数量为41.80±1.48)比在P1型精子竞争试验中(后代数量为18.01±0.70)具有明显更高的父权成功。P1和P2 2种类型精子竞争中的生殖成功与终生生殖成功试验的相关分析表明,P2型精子竞争实验中黑腹果蝇Y染色体种群雄性个体在后代个体的数量和比例上与终生生殖成功试验中Y染色体雄性后代个体的数量和比例均存在显著的相关关系。P1和P2 2种类型精子竞争试验和终生生殖成功试验中雄性个体父权成功的广义线性模型分析表明,相对于P1型精子竞争,P2型精子竞争可以解释黑腹果蝇Y染色体种群雄性个体终生生殖成功更多的变异来源。[结论]黑腹果蝇Y染色体对雄性个体2种类型精子竞争存在显著影响。通过对2种类型精子竞争的不同影响,最终可以影响雄性个体的终生生殖成功。在黑腹果蝇Y染色体种群雄性个体终生生殖成功的实现中,P2型精子竞争相对于P1型精子竞争可以发挥更重要的作用。

Keyword :

Y染色体 Y染色体 父权鉴定 父权鉴定 生殖成功 生殖成功 精子竞争 精子竞争 黑腹果蝇 黑腹果蝇

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GB/T 7714 李金磊 , 侯有明 . 黑腹果蝇Y染色体在精子竞争效能和生殖成功中的作用 [J]. | 生物安全学报(中英文) , 2025 , 34 (03) : 295-306 .
MLA 李金磊 et al. "黑腹果蝇Y染色体在精子竞争效能和生殖成功中的作用" . | 生物安全学报(中英文) 34 . 03 (2025) : 295-306 .
APA 李金磊 , 侯有明 . 黑腹果蝇Y染色体在精子竞争效能和生殖成功中的作用 . | 生物安全学报(中英文) , 2025 , 34 (03) , 295-306 .
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Microbial Symbiosis in Lepidoptera: Analyzing the Gut Microbiota for Sustainable Pest Management SCIE
期刊论文 | 2025 , 14 (8) | BIOLOGY-BASEL
WoS CC Cited Count: 6
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Recent advances in microbiome studies have deepened our understanding of endosymbionts and gut-associated microbiota in host biology. Of those, lepidopteran systems in particular harbor a complex and diverse microbiome with various microbial taxa that are stable and transmitted between larval and adult stages, and others that are transient and context-dependent. We highlight key microorganisms-including Bacillus, Lactobacillus, Escherichia coli, Pseudomonas, Rhizobium, Fusarium, Aspergillus, Saccharomyces, Bifidobacterium, and Wolbachia-that play critical roles in microbial ecology, biotechnology, and microbiome studies. The fitness implications of these microbial communities can be variable; some microbes improve host performance, while others neither positively nor negatively impact host fitness, or their impact is undetectable. This review examines the central position played by the gut microbiota in interactions of insects with plants, highlighting the functions of the microbiota in the manipulation of the behavior of herbivorous pests, modulating plant physiology, and regulating higher trophic levels in natural food webs. It also bridges microbiome ecology and applied pest management, emphasizing S. frugiperda as a model for symbiont-based intervention. As gut microbiota are central to the life history of herbivorous pests, we consider how these interactions can be exploited to drive the development of new, environmentally sound biocontrol strategies. Novel biotechnological strategies, including symbiont-based RNA interference (RNAi) and paratransgenesis, represent promising but still immature technologies with major obstacles to overcome in their practical application. However, microbiota-mediated pest control is an attractive strategy to move towards sustainable agriculture. Significantly, the gut microbiota of S. frugiperda is essential for S. frugiperda to adapt to a wide spectrum of host plants and different ecological niches. Studies have revealed that the microbiome of S. frugiperda has a close positive relationship with the fitness and susceptibility to entomopathogenic fungi; therefore, targeting the S. frugiperda microbiome may have good potential for innovative biocontrol strategies in the future.

Keyword :

endosymbionts endosymbionts gut microbiota gut microbiota insect-plant interactions insect-plant interactions microbiome pest management microbiome pest management

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GB/T 7714 Basit, Abdul , Ul Haq, Inzamam , Hyder, Moazam et al. Microbial Symbiosis in Lepidoptera: Analyzing the Gut Microbiota for Sustainable Pest Management [J]. | BIOLOGY-BASEL , 2025 , 14 (8) .
MLA Basit, Abdul et al. "Microbial Symbiosis in Lepidoptera: Analyzing the Gut Microbiota for Sustainable Pest Management" . | BIOLOGY-BASEL 14 . 8 (2025) .
APA Basit, Abdul , Ul Haq, Inzamam , Hyder, Moazam , Humza, Muhammad , Younas, Muhammad , Akhtar, Muhammad Rehan et al. Microbial Symbiosis in Lepidoptera: Analyzing the Gut Microbiota for Sustainable Pest Management . | BIOLOGY-BASEL , 2025 , 14 (8) .
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Tetrastichus brontispae exploits host-derived On-miR-281-3p to suppress the phenoloxidase pathway and facilitate its development SCIE
期刊论文 | 2025 , 81 (12) , 8151-8162 | PEST MANAGEMENT SCIENCE
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BACKGROUNDParasitoid wasps rely on precise immune manipulation to establish infections in their hosts. Tetrastichus brontispae must overcome the robust melanization response of its palm pest host Octodonta nipae, yet the molecular mechanisms regulating to this process remain poorly characterized, particularly regarding microRNA (miRNA)-mediated control of the phenoloxidase (PO) cascade.RESULTSBioinformatic analysis of the O. nipae genome identified 11 melanization-associated miRNAs targeting key immune genes. Dual luciferase detection system assay and RNA binding protein immunoprecipitation results revealed that On-miR-182-5p and On-miR-281-3p regulate the melanization pathway through distinct mechanisms: On-miR-182-5p binds the 5 ' untranslated region (UTR) of OnSPN1, while On-miR-281-3p targets the 3 ' CDS of OnPPO1. Antagomir-mediated knockdown of miR-281-3p increased OnPPO1 messenger RNA (mRNA) levels by 52% and elevated PO activity by 68%, whereas miR-182-5p agomir treatment unexpectedly up-regulated OnSPN1 expression 2.4-fold. Disrupting this regulatory network significantly impaired T. brontispae fitness, reducing emergence rates by 27.3%, skewing offspring sex ratios to 3.8 females per male, and prolonging development time by 48 h.CONCLUSIONOur study reveals a sophisticated immune manipulation strategy where T. brontispae hijacks host miR-182-5p (activator) and miR-281-3p (suppressor) to bidirectionally regulate the PO cascade, simultaneously inhibiting melanization while maintaining microbial defense capacity. These findings provide novel targets for improving biological control strategies against invasive palm pests through miRNA-based interventions. (c) 2025 Society of Chemical Industry.

Keyword :

melanization melanization microRNA microRNA Octodonta nipae Octodonta nipae phenoloxidase cascade phenoloxidase cascade Tetrastichus brontispae Tetrastichus brontispae

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GB/T 7714 Zhang, Huajian , Liao, Guiming , Yin, Jiawei et al. Tetrastichus brontispae exploits host-derived On-miR-281-3p to suppress the phenoloxidase pathway and facilitate its development [J]. | PEST MANAGEMENT SCIENCE , 2025 , 81 (12) : 8151-8162 .
MLA Zhang, Huajian et al. "Tetrastichus brontispae exploits host-derived On-miR-281-3p to suppress the phenoloxidase pathway and facilitate its development" . | PEST MANAGEMENT SCIENCE 81 . 12 (2025) : 8151-8162 .
APA Zhang, Huajian , Liao, Guiming , Yin, Jiawei , Xu, Jiawei , Hou, Youming , Tang, Baozhen . Tetrastichus brontispae exploits host-derived On-miR-281-3p to suppress the phenoloxidase pathway and facilitate its development . | PEST MANAGEMENT SCIENCE , 2025 , 81 (12) , 8151-8162 .
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Distribution overlap and comparative genomics of two invasive gelechiid moths, Tuta absoluta and Phthorimaea operculella, under climate change SCIE
期刊论文 | 2025 | JOURNAL OF ECONOMIC ENTOMOLOGY
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The tomato leafminer moth, Tuta absoluta (Meyrick), and the potato tuber moth, Phthorimaea operculella (Zeller), are closely related gelechiid species that have rapidly invaded tropical, subtropical, and Mediterranean regions worldwide, causing severe damage to solanaceous crops. We used the optimized MaxEnt model combined with 19 bioclimatic variables to comprehensively predict their potential distributions under current and future climate scenarios. While the distribution areas of the species overlapped significantly, our models predicted T. absoluta could potentially establish into high-latitude and arid areas. To further explore their adaptive mechanisms, we conducted comparative genomics based on the genomes of both species and 20 other insect species. Despite their close relationship, T. absoluta possessed 5.5 times more unique gene families than P. operculella, along with significantly expanded gene families associated with pesticide resistance (P450s: 92 vs. 86), extreme temperature tolerance (heat shock proteins [HSPs]: 62 vs. 58), and desiccation stress tolerance (aquaporins [AQP]: 12 vs. 9). These genomic features suggest that T. absoluta will adapt faster to environmental challenges and has greater potential to invade new areas compared to P. operculella. This study elucidates the patterns of potential distribution and genome evolution for T. absoluta and P. operculella, highlighting their distinct invasion and adaptation strategies. The findings provide both a novel perspective on the habitat suitability of these invasive pests and a scientific basis for climate-adaptive management strategies.

Keyword :

gene family evolution gene family evolution invasive gelechiid pests invasive gelechiid pests MaxEnt MaxEnt pest adaptation pest adaptation potential geographical distribution potential geographical distribution

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GB/T 7714 Zhao, Yan , Zhang, Yu , Huang, Lin et al. Distribution overlap and comparative genomics of two invasive gelechiid moths, Tuta absoluta and Phthorimaea operculella, under climate change [J]. | JOURNAL OF ECONOMIC ENTOMOLOGY , 2025 .
MLA Zhao, Yan et al. "Distribution overlap and comparative genomics of two invasive gelechiid moths, Tuta absoluta and Phthorimaea operculella, under climate change" . | JOURNAL OF ECONOMIC ENTOMOLOGY (2025) .
APA Zhao, Yan , Zhang, Yu , Huang, Lin , Yang, Tao , Wu, Sheng-Yen , Li, Shanglin et al. Distribution overlap and comparative genomics of two invasive gelechiid moths, Tuta absoluta and Phthorimaea operculella, under climate change . | JOURNAL OF ECONOMIC ENTOMOLOGY , 2025 .
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Functional Analysis of NPC2 in Alarm Pheromone Recognition by the Red Imported Fire Ant, Solenopsis invicta (Formicidae: Solenopsis) SCIE
期刊论文 | 2025 , 16 (8) | INSECTS
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The red imported fire ant (Solenopsis invicta) is a dangerous invasive insect. These ants rely on releasing an alarm pheromone, mainly composed of 2-ethyl-3,6-dimethylptrazine (EDMP), to warn nestmates of danger and trigger group defense or escape behaviors. This study found two NPC2 proteins in the ant antennae: SinvNPC2a and SinvNPC2b. SinvNPC2a was highly expressed in the antennae; phylogenetic analysis also suggests that SinvNPC2 likely possesses conserved olfactory recognition functions. By knocking down the SinvNPC2a gene, we found that the electrophysiological response of ant antennae to EDMP became weaker. More importantly, ants lacking SinvNPC2a showed significantly reduced movement range and speed when exposed to EDMP, compared to normal ants not treated with RNAi. These ants did not spread out quickly. Furthermore, tests showed that the purified SinvNPC2a protein could directly bind to EDMP molecules. Computer modeling also showed that they fit together tightly. These findings provide direct evidence that the SinvNPC2a protein plays a key role in helping fire ants detect the EDMP alarm pheromone. It enables the ants to sense this chemical signal, allowing ant colonies to respond quickly. Understanding this mechanism improves our knowledge of how insects smell things. It also suggests a potential molecular target for developing new methods to control fire ants, such as using RNAi to block its function.

Keyword :

alarm pheromone alarm pheromone electroantennography electroantennography fluorescence competitive binding fluorescence competitive binding NPC2 NPC2 red imported fire ant red imported fire ant RNA interference RNA interference

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GB/T 7714 Lin, Peng , Shen, Jiacheng , Jiang, Xinyi et al. Functional Analysis of NPC2 in Alarm Pheromone Recognition by the Red Imported Fire Ant, Solenopsis invicta (Formicidae: Solenopsis) [J]. | INSECTS , 2025 , 16 (8) .
MLA Lin, Peng et al. "Functional Analysis of NPC2 in Alarm Pheromone Recognition by the Red Imported Fire Ant, Solenopsis invicta (Formicidae: Solenopsis)" . | INSECTS 16 . 8 (2025) .
APA Lin, Peng , Shen, Jiacheng , Jiang, Xinyi , Liu, Fenghao , Hou, Youming . Functional Analysis of NPC2 in Alarm Pheromone Recognition by the Red Imported Fire Ant, Solenopsis invicta (Formicidae: Solenopsis) . | INSECTS , 2025 , 16 (8) .
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Detecting the Role of Salivary Protein Genes in Spodoptera frugiperda Adaptation to Different Host Plants SCIE
期刊论文 | 2025 , 73 (36) , 22295-22310 | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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Spodoptera frugiperda possesses a remarkably broad host range and causes substantial economic losses in global agricultural production. Insect saliva secreted onto plant surfaces plays a vital role in regulating both plant defense responses and insect adaptation. However, the mechanisms by which S. frugiperdasalivary proteins that respond to plant defense responses and regulate host adaptation remain elusive. The two-sex life table evaluation indicates that the host adaptability of S. frugiperda varies under different feeding schemes. Transcriptome analysis of differentially expressed genes in the salivary glands revealed that PTL, CSP2, and SPI are specifically responsive to host plants but not to an artificial diet. In S. frugiperda fed on adaptive host plants, the primary secretory proteins PDI and esterase FE4 are involved in enhancing host adaptation. When fed on nonadaptive host plants, S. frugiperda invests more energy in synthesizing detoxification metabolic enzymes such as trypsin, SPSL, and CLE2A. This study offers valuable insights into the adaptation mechanisms of phytophagous insects and identifies candidate genes involved in insect-plant interactions, offering targets for sustainable pest control strategies.

Keyword :

adaptive host plants adaptive host plants interaction interaction Spodoptera frugiperda Spodoptera frugiperda transcriptome transcriptome two-sex lifetable two-sex lifetable

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GB/T 7714 Cai, Xiang-Yun , Wang, Ya-Ru , Li, Xiu-Jie et al. Detecting the Role of Salivary Protein Genes in Spodoptera frugiperda Adaptation to Different Host Plants [J]. | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY , 2025 , 73 (36) : 22295-22310 .
MLA Cai, Xiang-Yun et al. "Detecting the Role of Salivary Protein Genes in Spodoptera frugiperda Adaptation to Different Host Plants" . | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 73 . 36 (2025) : 22295-22310 .
APA Cai, Xiang-Yun , Wang, Ya-Ru , Li, Xiu-Jie , Zhang, Zheng-Hao , Ul Haq, Inzamam , Wang, Jin-Da et al. Detecting the Role of Salivary Protein Genes in Spodoptera frugiperda Adaptation to Different Host Plants . | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY , 2025 , 73 (36) , 22295-22310 .
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Mesoporous Silica Nanoparticles Impair Physiology and Reproductive Fitness of Tuta absoluta Through Plant-Mediated Oxidative Stress and Enzymatic Disruption SCIE
期刊论文 | 2025 , 16 (9) | INSECTS
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The tomato leafminer (Tuta absoluta) is a globally invasive pest that causes severe yield losses in tomato crops. Nanotechnology-based strategies offer promising alternatives to conventional insecticides. This study examines the physiological, biochemical, and demographic responses of T. absoluta following exposure to mesoporous silica nanoparticles (MSNs) applied to tomato leaves at concentrations of 0, 3, 30, and 300 mg L-1. Comprehensive assessments were conducted, including digestive and detoxifying enzyme activities in the insect, neurotoxicity indicators, life table parameters, and antioxidant responses in the host plant. At 30 mg L-1, MSNs significantly impaired larval development, fecundity, and survival of T. absoluta without inducing phytotoxicity. Tomato plants treated at this concentration exhibited enhanced antioxidant enzyme activity (SOD, CAT, POD) and a reduced malondialdehyde (MDA) content, indicating an active oxidative defense. These plant responses were significantly correlated with changes in insect fitness traits, suggesting a plant-mediated effect on pest physiology. Digestive enzyme disruption, decreased acetylcholinesterase activity, and extended developmental periods contributed to suppressed population growth, as evidenced by reductions in the intrinsic rate of increase (r), net reproductive rate (R0), and fecundity. At 300 mg L-1, however, severe phytotoxicity and enzymatic collapse were observed in both plant and insect systems. These findings highlight moderate concentration of MSNs (30 mg L-1) as a promising dose for sustainable and host-safe pest management, offering multi-targeted suppression of T. absoluta through combined plant and insect biochemical pathways.

Keyword :

insect digestive enzymes insect digestive enzymes integrated pest management (IPM) integrated pest management (IPM) mesoporous silica nanoparticles mesoporous silica nanoparticles nanobiopesticides nanobiopesticides tomato plant antioxidants tomato plant antioxidants Tuta absoluta Tuta absoluta

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GB/T 7714 Ul Haq, Inzamam , Liu, Huiping , Ghafar, Muhammad Adeel et al. Mesoporous Silica Nanoparticles Impair Physiology and Reproductive Fitness of Tuta absoluta Through Plant-Mediated Oxidative Stress and Enzymatic Disruption [J]. | INSECTS , 2025 , 16 (9) .
MLA Ul Haq, Inzamam et al. "Mesoporous Silica Nanoparticles Impair Physiology and Reproductive Fitness of Tuta absoluta Through Plant-Mediated Oxidative Stress and Enzymatic Disruption" . | INSECTS 16 . 9 (2025) .
APA Ul Haq, Inzamam , Liu, Huiping , Ghafar, Muhammad Adeel , Zafar, Saba , Subhan, Mishal , Abbasi, Asim et al. Mesoporous Silica Nanoparticles Impair Physiology and Reproductive Fitness of Tuta absoluta Through Plant-Mediated Oxidative Stress and Enzymatic Disruption . | INSECTS , 2025 , 16 (9) .
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