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Regulation of reproduction by juvenile hormone synthase and degradation enzyme in Diaphorina citri. 柑桔幼体激素合成酶和降解酶对其繁殖的调控。
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-26 DOI: 10.1002/ps.70257
De-Xiang Shi,Bi-Qiong Pan,Kai Lin,Xiao-Yun Wang,Xue-Sheng Li,Xia-Lin Zheng
{"title":"Regulation of reproduction by juvenile hormone synthase and degradation enzyme in Diaphorina citri.","authors":"De-Xiang Shi,Bi-Qiong Pan,Kai Lin,Xiao-Yun Wang,Xue-Sheng Li,Xia-Lin Zheng","doi":"10.1002/ps.70257","DOIUrl":"https://doi.org/10.1002/ps.70257","url":null,"abstract":"BACKGROUNDInsect juvenile hormone (JH) and its regulation are crucial for their reproduction. Diaphorina citri Kuwayama is a major pest in the citrus industry. However, it remains unclear how the JH synthase-encoding gene (DcJHAMT) and the degradation enzyme-encoding gene (DcJHEH) are involved in regulating JH levels, vitellogenin synthesis and ovarian development.RESULTSThis study employed RNA interference (RNAi) to silence DcJHAMT and DcJHEH in female D. citri. After DcJHAMT was silenced, the JH concentration decreased, the expression levels of key vitellogenin genes (Vg and VgR) decreased, and ovarian development slowed. After DcJHEH was silenced, the JH concentration increased, the expression levels of Vg and VgR were upregulated, and ovarian development accelerated. After interfering with DcJHAMT, the expression level of DcJHEH decreased, while after interfering with DcJHEH, the expression level of DcJHAMT increased, which confirms that the DcJHAMT and DcJHEH genes are antagonistic to each other and jointly regulate the dynamic balance of JH.CONCLUSIONDcJHAMT and DcJHEH were found to synergistically regulate the JH titer and vitellogenin production of D. citri. These results will contribute to the in-depth study of JH pathway regulation in D. citri and bestow significant data for the development of RNAi green pesticides based on reproductive regulatory genes. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"41 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of odorant-binding proteins in Ceutorhynchus asper and functional analyses of CaspOBP9. 山雀气味结合蛋白鉴定及CaspOBP9功能分析。
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-25 DOI: 10.1002/ps.70252
Xinghao Li,Fangjing Hu,Rufan Li,Danhao Peng,Ping Gao,Fuqiang Rao,Abdul Ghaffar Khoso,Yonghong Li,Deguang Liu
{"title":"Identification of odorant-binding proteins in Ceutorhynchus asper and functional analyses of CaspOBP9.","authors":"Xinghao Li,Fangjing Hu,Rufan Li,Danhao Peng,Ping Gao,Fuqiang Rao,Abdul Ghaffar Khoso,Yonghong Li,Deguang Liu","doi":"10.1002/ps.70252","DOIUrl":"https://doi.org/10.1002/ps.70252","url":null,"abstract":"BACKGROUNDThe rape stem weevil (Ceutorhynchus asper) represents a significant threat to economically-important cruciferous crops. The main aim was to characterize CaspOBPs (odorant-binding proteins) and the functions of CaspOBP9.RESULTSWe performed transcriptomic sequencing on C. asper tissues and identified 21 CaspOBPs. A majority of CaspOBPs were relatively highly expressed in the antennae; for these OBPs, CaspOBP9, 12, 16, 19 and 20 were female-biased, whereas CaspOBP5, 8 and 10 were male-biased. Recombinant CaspOBP9 showed good affinity for four plant volatiles and two pesticides, suggesting that CaspOBP9 was involved in perception of both pesticides and host volatiles. Behavioral experiments showed that C. asper was significantly attracted to decanal, benzyl isothiocyanate (ITC) and phenylethyl isothiocyanate. Molecular simulations suggest that Van der Waals forces serve as the main driving force for the formation of CaspOBP9-ligand complexes. Residues LEU:71, THR:79 and TYR:105 were identified to be critical in the formation of the complexes. Site-directed mutagenesis experiments showed that mutated proteins at the above-mentioned three sites had reduced or even no binding affinity for the corresponding compounds. RNAi experiments targeting CaspOBP9 confirmed its essential roles in olfactory perception of C. asper.CONCLUSIONSCaspOBP9 could play important roles in perception of particular plant volatiles (e.g. benzyl ITC) and pesticides (e.g. chlorpyrifos) by C. asper, and its key residues LEU:71, THR:79 and TYR:105 were identified. This research provides valuable insights into the molecular mechanisms underlying olfactory perception of C. asper, and a foundation for the development of novel control techniques for this weevil. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"6 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of alpha-cypermethrin pesticide residues along the value chain of tomato from Laikipia County, Kenya 肯尼亚莱基皮亚县番茄价值链中高效氯氰菊酯农药残留分析
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-24 DOI: 10.1002/ps.70215
James Adero Obar, Emmah Kwoba, Esther Omosa, Wellington Ekaya, Eric Fevre, Joshua Onono
{"title":"Analysis of alpha-cypermethrin pesticide residues along the value chain of tomato from Laikipia County, Kenya","authors":"James Adero Obar, Emmah Kwoba, Esther Omosa, Wellington Ekaya, Eric Fevre, Joshua Onono","doi":"10.1002/ps.70215","DOIUrl":"https://doi.org/10.1002/ps.70215","url":null,"abstract":"In Kenya, the extensive use of agrochemicals in fruits and vegetable farming raises concerns about pesticide residues in agricultural products including tomato fruits. There are still a number of highly hazardous pesticides including mancozeb, glyphosate acid, chlorpyrifos, acephate and cypermethrin amongst many others that are still used in Kenya despite being banned in Europe due to harmful effects on humans and other animals. This study aimed to evaluate the residual levels of cypermethrin pesticide in locally produced tomato in Laikipia County, Kenya. Also, the study identified some practices that lead to pesticide residual levels in tomatoes. A total of 82 tomato samples were analyzed for pesticide residues following extraction using QuEChERS method and analyzed for the presence of synthetic pyrethroids (<i>cis-</i> and <i>trans-</i>alpha-cypermethrins) pesticides using gas chromatography–mass spectrometry (GC–MS).","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"40 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Antibacterial activity and mechanism of Myxin from Lysobacter antibioticus against Xanthomonas fragariae 溶菌素对黄单胞菌的抑菌活性及抑菌机制研究
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-24 DOI: 10.1002/ps.70233
Chunju Deng, Jinhao Zhang, Yue Qiu, Haowen He, Juxiang Wang, Mengxiang Ma, Yimei Li, Liting Zeng, Jingyuan Luo, Guanghai Ji
{"title":"Antibacterial activity and mechanism of Myxin from Lysobacter antibioticus against Xanthomonas fragariae","authors":"Chunju Deng, Jinhao Zhang, Yue Qiu, Haowen He, Juxiang Wang, Mengxiang Ma, Yimei Li, Liting Zeng, Jingyuan Luo, Guanghai Ji","doi":"10.1002/ps.70233","DOIUrl":"https://doi.org/10.1002/ps.70233","url":null,"abstract":"BACKGROUND<jats:italic>Xanthomonas fragariae</jats:italic> (<jats:italic>Xaf</jats:italic>), the causative agent of angular leaf spot (ALS) in strawberries, poses a significant threat to the strawberry industry due to the current lack of effective biological control measures. Myxin, produced by <jats:italic>Lysobacter antibioticus</jats:italic>, exhibits good inhibitory activity against various pathogenic bacteria. However, the efficacy and mechanism of its antibacterial actions against <jats:italic>X. fragariae</jats:italic> remains poorly understood.RESULTS<jats:italic>X. fragariae</jats:italic> proliferation was almost completely suppressed by Myxin at 0.6 MIC (Minimum Inhibitory Concentration, MIC = 40 μg/mL). Biological characterization experiments found that Myxin can change the permeability of <jats:italic>Xaf</jats:italic> cell membrane, induce cell swelling, accumulate intracellular reactive oxygen species (ROS), hinder the synthesis of biofilm, Exopolysaccharide (EPS) and intracellular protein. Significant findings revealed a notable decrease in the expression of genes associated with ribosome metabolism, amino acid production, and energy metabolism, while genes related to oxidative stress were upregulated, and there was a change in the expression of genes involved in cell structure and exopolysaccharide biosynthesis.CONCLUSIONThis study reveals that the Myxin employs a multi‐target antimicrobial strategy against <jats:italic>X. fragariae</jats:italic>. Our findings lay the groundwork for using Myxin and developing a disease management system for strawberry angular leaf spot. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"16 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145133613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lightweight crop disease identification network based on frequency domain and channel mixing attention and cross-scale semantic fusion 基于频域和信道混合关注和跨尺度语义融合的作物病害轻量级识别网络
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-24 DOI: 10.1002/ps.70170
Tiancan Jian, Haixia Qi, Riyao Chen, Yu Liang, Guangsheng Liang, Xiwen Luo
{"title":"Lightweight crop disease identification network based on frequency domain and channel mixing attention and cross-scale semantic fusion","authors":"Tiancan Jian, Haixia Qi, Riyao Chen, Yu Liang, Guangsheng Liang, Xiwen Luo","doi":"10.1002/ps.70170","DOIUrl":"https://doi.org/10.1002/ps.70170","url":null,"abstract":"Accurate identification of crop diseases is essential for enhancing agricultural productivity; however, it encounters challenges arising from complex field conditions and the constraints of deploying on resource-limited devices. This study aims to develop a lightweight yet accurate framework, referred to as FCDRNet, which integrates feature enhancement and compression techniques to facilitate practical deployment in the field.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"29 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fluazinam binds with the ATP synthase subunit FfATPh but not with FfATP5 or FfATPb of Fusarium fujikuroi 氟唑西南与藤黑镰刀菌的ATP合成酶亚基FfATPh结合,但不与FfATP5或FfATPb结合
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-24 DOI: 10.1002/ps.70249
Zelong Peng, Weidong Wen, Chongjing Xu, Pengwei Wang, Tingting Ran, Yiping Hou
{"title":"Fluazinam binds with the ATP synthase subunit FfATPh but not with FfATP5 or FfATPb of Fusarium fujikuroi","authors":"Zelong Peng, Weidong Wen, Chongjing Xu, Pengwei Wang, Tingting Ran, Yiping Hou","doi":"10.1002/ps.70249","DOIUrl":"https://doi.org/10.1002/ps.70249","url":null,"abstract":"BACKGROUNDRice bakanae disease, a devastating disease caused by <jats:italic>Fusarium fujikuroi</jats:italic> infection, is primarily managed through chemical agents. Fluazinam, an oxidative phosphorylation uncoupler, is registered for controlling rice bakanae disease, yet its precise mechanism of action remains unclear. Our previous studies found that deletion mutants of ATP synthase subunits FfATPh, FfATP5, and FfATPb in <jats:italic>Fusarium fujikuroi</jats:italic> showed reduced sensitivity to fluazinam, therefore we aimed to investigate whether fluazinam is capable of binding with FfATPh, FfATP5, and FfATPb.RESULTSIn this study, the ATP synthase subunits FfATPh, FfATP5, and FfATPb were obtained via prokaryotic expression and nickel‐column affinity purification. Microscale thermophoresis (MST) results showed that fluazinam binds with His9‐MBP‐TEV‐ATPh and the <jats:italic>K</jats:italic><jats:sub>d</jats:sub> was 25.34 ± 11.71 nM. In contrast, its <jats:italic>K</jats:italic><jats:sub>d</jats:sub> values for His9‐MBP‐TEV‐ATP5 and His9‐MBP‐TEV‐ATPb were 1.49 ± 1.32 μM and 1.04 ± 0.75 μM, respectively, both similar to that of the His9‐MBP‐TEV control (2.57 ± 2.02 μM). These findings indicate that fluazinam exhibits specific affinity with FfATPh. Molecular docking analysis showed that fluazinam can form hydrogen bonds with Asp42 and Phe43 of FfATPh. Further affinity measurements of purified FfATPh point‐mutant proteins showed that the binding affinity of fluazinam with His9‐MBP‐TEV‐ATPh‐D42A, D42H, F43A, and F43S was reduced to varying degrees. Mutations at residue Asp42 led to a more significant decrease in affinity, with <jats:italic>K</jats:italic><jats:sub>d</jats:sub> values of 639 ± 431 nM for D42A and 1.61 ± 1.36 μM for D42H.CONCLUSIONBased on these data, we speculate that fluazinam binds with FfATPh, with Asp42 serving as key binding sites. These findings provide a new molecular perspective on the mode of action of fluazinam and lay the foundation for its precise structural optimization. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"20 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145133612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sublethal tebuconazole exposure enhances pathogenicity and resistance development in Sclerotium rolfsii. 亚致死戊康唑暴露增强罗尔夫菌核菌的致病性和抗性发展。
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-22 DOI: 10.1002/ps.70250
Ruiping Huang,Lin Zhou,Xuewei Mao,Jialin Duan,Yue Wang,Hong Li,Qinqin Wang,Li Wang,Daojie Wang
{"title":"Sublethal tebuconazole exposure enhances pathogenicity and resistance development in Sclerotium rolfsii.","authors":"Ruiping Huang,Lin Zhou,Xuewei Mao,Jialin Duan,Yue Wang,Hong Li,Qinqin Wang,Li Wang,Daojie Wang","doi":"10.1002/ps.70250","DOIUrl":"https://doi.org/10.1002/ps.70250","url":null,"abstract":"BACKGROUNDTebuconazole, an exemplary triazole fungicide, was registered in China for controlling peanut southern blight (caused by Sclerotium rolfsii Sacc.) in 2025; however, mechanistic studies on its toxicological effects remain limited. This study evaluates tebuconazole's (EC10: 0.0029, EC25: 0.0099 and EC30: 0.0134 mg L-1) effects on S. rolfsii growth, virulence, antioxidant enzymes, and target gene expression to guide its scientific application.RESULTSCompared to the control, the sclerotia germination rate of S. rolfsii at 24 h was increased by 64.29, 89.34, and 71.43% under EC₁₀, EC₂₅, and EC₃₀ tebuconazole exposure treatments, respectively. The cell membrane permeability of S. rolfsii was reduced after 36 h of tebuconazole exposure; however, prolonged treatment disrupted membrane integrity and subsequently increased permeability. Sublethal tebuconazole exposure increases the virulence of S. rolfsii towards peanuts and promotes oxalic acid secretion. Antioxidant enzyme activities (superoxide dismutase, peroxidase and catalase) and expression of the target gene (SrCYP51) exhibit responsive activation under sublethal tebuconazole stress.CONCLUSIONTebuconazole (EC₁₀, EC₂₅, and EC₃₀) may induce sclerotial germination, enhance virulence, and upregulate expression of a target gene in S. rolfsii, which could pose threats to both effective disease control and fungicide resistance development in this pathogen. The results advance the understanding of tebuconazole toxicity against S. rolfsii and guide its control strategies. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"1 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An amphiphilic carboxymethyl chitosan-based nanopesticide delivery system with enhanced foliar deposition for improved insect-repellent and antibacterial efficacy. 一种基于两亲性羧甲基壳聚糖的纳米农药输送系统,具有增强的叶面沉积,以提高驱虫和抗菌效果。
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-22 DOI: 10.1002/ps.70251
Jihao Zuo,Jinting Cai,Ying Li,Yitong Lin,Ruopeng Lan,Long Chen,Dongyan Yang,Xinhua Zhou,Hongjun Zhou
{"title":"An amphiphilic carboxymethyl chitosan-based nanopesticide delivery system with enhanced foliar deposition for improved insect-repellent and antibacterial efficacy.","authors":"Jihao Zuo,Jinting Cai,Ying Li,Yitong Lin,Ruopeng Lan,Long Chen,Dongyan Yang,Xinhua Zhou,Hongjun Zhou","doi":"10.1002/ps.70251","DOIUrl":"https://doi.org/10.1002/ps.70251","url":null,"abstract":"BACKGROUNDThe significant loss of dosage during pesticide interfacial transfer notably undermines bioavailability, posing a critical challenge to sustainable agriculture. Designing pesticide formulations with efficient foliar deposition facilitates reduced application rates and enhanced efficacy.RESULTSIn this study, methyl-bis(trimethylsilyloxy)silicon (TSS) was grafted onto carboxymethyl chitosan (CMCS) via a free radical polymerization reaction, followed by self-assembly to form an amphiphilic carrier (C-Ax-Ty). The carrier then encapsulated eugenol (Eug) through hydrophobic interactions, resulting in the rational construction of the amphiphilic carboxymethyl chitosan-based nanopesticide delivery system (Eug@C-Ax-Ty). The regulation of TSS addition during carrier preparation significantly reduced dynamic surface tension while simultaneously increasing the viscosity of the solutions. Droplet impact dynamics evaluation confirmed that C-Ax-Ty effectively mitigated rebound behavior during high-speed collisions with hydrophobic surfaces. Notably, Eug@C-Ax-Ty exhibited superior dynamic wettability, as demonstrated by impact dynamics analysis and energy conversion analysis. Leveraging the enhanced foliar deposition ability and delayed volatilization of Eug, vegetables treated with Eug@C-A0.4-T1.0 demonstrated improved antifeedant activity against Spodoptera litura. Moreover, Eug@C-Ax-Ty exhibited significantly enhanced antibacterial activity against foodborne Staphylococcus aureus compared to Eug, while also demonstrating reduced phytotoxicity and minimal inhibition of seed germination.CONCLUSIONThis study provides theoretical insights for enhancing the foliar deposition of nanopesticide formulations and improving the bioavailability of plant essential oils, thus offering promising applications in sustainable agriculture. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"89 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Antimicrobial activity and mechanism of the plant-derived compound evodiamine against Phytophthora capsici. 植物源化合物evolodiamine对辣椒疫霉的抑菌活性及机理研究。
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-22 DOI: 10.1002/ps.70255
Wenhao Liang,Xiaoxiao Xu,Tong Shi,Shengyang Xu,Qizhi Wang,Bi Wang
{"title":"Antimicrobial activity and mechanism of the plant-derived compound evodiamine against Phytophthora capsici.","authors":"Wenhao Liang,Xiaoxiao Xu,Tong Shi,Shengyang Xu,Qizhi Wang,Bi Wang","doi":"10.1002/ps.70255","DOIUrl":"https://doi.org/10.1002/ps.70255","url":null,"abstract":"BACKGROUNDPhytophthora capsici is a devastating oomycete pathogen with major economic concern. However, the use of traditional chemical fungicides is associated with environmental pollution, and fungicide resistance is increasingly prevalent. Consequently, developing safe, effective, and environmentally friendly alternatives is critically required. Evodiamine (EVO), a bioactive alkaloid from plants, has been extensively investigated for its anti-cancer properties. However, its inhibitory effects against phytopathogens have not yet been fully elucidated. This study evaluated EVO's antimicrobial activity toward P. capsici and its potential mode of action.RESULTSEVO significantly inhibited P. capsici mycelial growth and spore germination, with median effective concentration (EC50) values of 6.48 μg mL-1 and 7.13 μg mL-1 respectively, across 108 P. capsici isolates. EVO exerted its antimicrobial effects by disrupting the cellular integrity of P. capsici, specifically targeting both the cell membrane and wall. Furthermore, EVO exhibited strong protective and curative efficacies in pepper leaves and seedlings. Genome-wide transcriptional analysis revealed that EVO treatment significantly altered the gene expression profile of P. capsici, especially affecting genes relevant to cell membrane integrity and transporter activity.CONCLUSIONOverall, this study revealed that EVO showed great control efficacy against P. capsici and held promise as a novel botanical fungicide. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"19 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nano selenium enhanced tomato resistance to leaf mold via activating salicylic acid defense pathways and regulating metabolic profiles as well as improved plant growth. 纳米硒通过激活水杨酸防御途径、调节代谢谱和促进植株生长来增强番茄对叶霉病的抗性。
IF 4.1 1区 农林科学
Pest Management Science Pub Date : 2025-09-21 DOI: 10.1002/ps.70235
Yuping Liu,Rui Liu,Ning Zhang,Simin Yu,Yufan Nie,Dier Song,Yue Zhang,Jia-Qi Li,Canping Pan,Wentao Zhu,Zhiqiang Zhou,Jinling Diao
{"title":"Nano selenium enhanced tomato resistance to leaf mold via activating salicylic acid defense pathways and regulating metabolic profiles as well as improved plant growth.","authors":"Yuping Liu,Rui Liu,Ning Zhang,Simin Yu,Yufan Nie,Dier Song,Yue Zhang,Jia-Qi Li,Canping Pan,Wentao Zhu,Zhiqiang Zhou,Jinling Diao","doi":"10.1002/ps.70235","DOIUrl":"https://doi.org/10.1002/ps.70235","url":null,"abstract":"BACKGROUNDDisease infection seriously threatens the healthy growth of tomatoes. In recent years, using nanomaterials to suppress crop disease damage has become a hotspot in agriculture. As an emerging nano-material, nano-selenium has been widely reported for improving crop growth and saving the damage caused by stresses such as pathogens and heavy metals on plants.RESULTSThis study investigated the control of tomato leaf mold (Cladosporium fulvum) by applying nano-Se (5/10/25 mg L-1) on tomato seedlings and explored related mechanisms. We found: (i) Nano-Se applying (especially 10 mg L-1) significantly inhibited tomato leaf mold and reduced disease severity of seedlings (52.84%, 14 days after inoculation). This was because nano-Se significantly promoted the accumulation of salicylic acid (SA) through up-regulating biosynthesis genes expression by significantly up-regulating the gene expression related to MAPK cascade and calcium signaling. This thereby induced the genes expression (NPR1, TGA2/1/5, WRKY33, WRKY70 and WRKY54) of SA signaling pathway, enhancing resistance-genes (PR1/2/3) transcription and elevating antioxidant and resistance-related indicator levels, ultimately activating systemic acquired resistance (SAR) in tomato. Nano-Se also promoted jasmonic acid (JA) signaling pathway. In addition, metabolomic analysis indicated nano-Se promoted phenolic compounds from the phenylpropane pathway (α-tocopherol, chlorogenic acid and ferulic acid), polyamines, GABA and various amino acids accumulation of tomato seedlings, which also supported the above results. (ii) Nano-Se promoted the growth of tomato seedings by enhancing photosynthesis and increasing auxin level.CONCLUSIONCompared to chemical fungicides, these findings suggested nano-Se provided a more promising and sustainable approach for managing diseases such as leaf mold and improving tomato plant growth. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"79 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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