Pest Management Science最新文献

{"title":"Geographic variation in chemical composition and bioactivity of Valeriana wallichii root oils: implications for botanical fumigant development against stored-product insects.","authors":"Na-Hyun Lee","doi":"10.1002/ps.70222","DOIUrl":"https://doi.org/10.1002/ps.70222","url":null,"abstract":"BACKGROUNDStored-product insects (Sitophilus spp., Plodia interpunctella, Sitotroga cerealella) drive substantial postharvest losses and increasingly resist synthetic fumigants. Valeriana wallichii roots yield volatile oils rich in short-chain acids and sesquiterpenes. We compared gas chromatography-mass spectrometry (GC-MS) profiles and fumigant/contact toxicities of oils distilled from India, China, and Nepal and tested representative constituents to identify bioactive chemotypes for grain protection.RESULTSGC-MS revealed significant geochemical divergence: Indian oil was characterized by a high acidity (isovaleric acid 39.6%; 3-methylvaleric acid 3.1%), whereas Nepalese oil had a greater concentration of 5-methylfurfural (12.45%) and sesquiterpenes. Indian oil was the most effective fumigant (median lethal dose (LD50): 8.65 μg/cm3 (Sitotroga cerealella adults), 25.14 μg/cm3 (Tyrophagus putrescentiae adults), 31.24 μg/cm3 (P. interpunctella adults) - 1.3-3.4 times more potent than other sources; contact bioassays confirmed the same hierarchy. Among the constituents, 5-methylfurfural exhibited the highest toxicity (LD50, 2.19 μg/cm3 for T. putrescentiae; 2.17-9.05 μg/cm3 for Sitotroga cerealella and adult P. interpunctella), followed by 3-methylvaleric acid (3.57 μg/cm3 for mites) and isovaleric acid (5.96 μg/cm3 for mites); β-caryophyllene demonstrated a preference for mites (LD50, 11.81 μg/cm3). Susceptibility ranked T. putrescentiae ≈ Sitotroga cerealella > P. interpunctella > Sitophilus spp. Fumigant bioassay was 1.5 to 4 times more efficacious than contact bioassay.CONCLUSIONAn acid-dominant Indian chemotype maximizes volatile bioactivity, with short-chain acids and 5-methylfurfural as primary drivers. Species-specific sensitivity supports targeted deployment (e.g., sachet-style emitters for mites/moths) and chemotype standardization. These findings advance botanical fumigant development by pinpointing active classes and geo-source effects, guiding low-residue controlled-release formulations and synergist-augmented strategies for tolerant coleopterans. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"112 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025502","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}

{"title":"Ultrasonic pulse repetition rates triggering escape responses of a moth pest.","authors":"Ming Siang Lem,Ryo Nakano,Masashi Nomura","doi":"10.1002/ps.70204","DOIUrl":"https://doi.org/10.1002/ps.70204","url":null,"abstract":"BACKGROUNDThe coevolutionary arms race between echolocating bats and tympanate moths has driven the evolution of ultrasound-mediated escape behaviors in moths. Bat-emitted ultrasonic pulses vary in sound intensity and temporal structure, with pulse repetition rate (PRR) which intrinsically encode critical information about predation risk, i.e., physical distance between bats and moths. However, species-specific PRR sensitivity remains underexplored, particularly in Plusiinae. This study investigates how variations in PRR modulate evasive flight and reproductive behaviors in Autographa nigrisigna (Lepidoptera: Noctuidae).RESULTSTethered flying moths were exposed to ultrasonic stimuli (6 ms pulse duration) across 1, 5, 10, 20, 40, 80, and 160 pulses per second (= PRR). Autographa nigrisigna exhibited PRR-dependent evasive behaviors, shifting from directional turns to erratic flight and flight cessation in response to increasing ultrasonic pulse PRRs. Reproductive status modified anti-bat behavior response: unmated females showed equivalent escape responses to low predation risk (PRR10; ultrasonic pulses of echolocating bats in prey-searching mode) and high predation risk (PRR20; ultrasonic pulses in prey-chasing mode), whereas host-searching flight of gravid females were more frequently suppressed by PRR20 than PRR10. This behavioral difference may reflect adaptive trade-offs between survival and reproduction.CONCLUSIONMated females of A. nigrisigna selectively avoid ultrasonic pulse repetition rates reflecting a high predation risk that are emitted by predatory bats while tracking a prey. This adaptive response highlights the evolutionary balance between predator evasion and reproductive investment in nocturnal Lepidoptera. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"23 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025503","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}

{"title":"Unveiling the roles of PEX16 in female reproductive capacity and lifespan of brown planthopper, Nilaparvata lugens (Stål), in relation to PEX14.","authors":"Yuqiong Liu,Qiqiang Zhang,Yiwen Mao,Zhenghui Qiu,Xinda Lin","doi":"10.1002/ps.70213","DOIUrl":"https://doi.org/10.1002/ps.70213","url":null,"abstract":"BACKGROUNDPeroxisomes are essential for the metabolism of very long-chain fatty acids (VLCFAs). Their biogenesis requires peroxins encoded by the PEX genes. While the significance of PEX14 has been established in the major rice pest the brown planthopper (Nilaparvata lugens), the role of PEX16 as a peroxisome biogenesis initiator remains uncharacterized in this pest. This study aimed to elucidate the functional importance of N. lugens PEX16 (NlPEX16) by comparing the impacts of disrupting NlPEX16 and NlPEX14.RESULTSNlPEX16 encodes a conserved membrane protein localized to peroxisomes. NlPEX16 silencing recapitulated the key phenotypic features of NlPEX14 deficiency, including reduced female lifespan, disrupted ovarian development, and severely impaired oviposition capacity in N. lugens. NlPEX16 knockdown accelerated female mortality kinetics and worsened fecundity more profoundly than NlPEX14 knockdown, despite modest VLCFA accumulation. Crucially, vitellogenin protein expression remained unchanged in NlPEX16-depleted females, in contrast with the 95% down-regulation observed in NlPEX14-impaired females. Furthermore, NlPEX16 silencing did not affect NlPEX14 protein expression.CONCLUSIONSSimilar to NlPEX14, NlPEX16 is essential for the survival and fecundity of the female brown planthopper. However, the mechanisms underlying the shared phenotypic outcomes are different. The non-redundant functions of NlPEX16 and NlPEX14 highlight how peroxisomal proteins orchestrate physiology through distinct yet interconnected mechanisms. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"15 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025501","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}

{"title":"Economics trumps biology: Corcyra cephalonica as the optimal factitious host for cost-effective mass production of Chelonus bifoveolatus, a key parasitoid of Spodoptera frugiperda.","authors":"Zhen Shen,Mi Huang,Haneef Tariq,Jian Wei,Kelvin Kamfwa,Adeney de Freitas Bueno,Liang-De Tang,Lian-Sheng Zang","doi":"10.1002/ps.70208","DOIUrl":"https://doi.org/10.1002/ps.70208","url":null,"abstract":"BACKGROUNDThe parasitoid Chelonus bifoveolatus is a promising biocontrol agent against the invasive fall armyworm (FAW) Spodoptera frugiperda, but its practical application hinges on cost-effective mass rearing. This study compares the biological performance and production economics of Ch. bifoveolatus reared on two factitious hosts (Corcyra cephalonica and Spodoptera litura) under controlled laboratory conditions.RESULTSOur results showed that Ch. bifoveolatus reared on S. litura had higher parasitism rates (86.63% versus 70.88%), an increased female offspring proportion (47.90% versus 32.08%), shorter developmental time (33.22 versus 69.72 days), longer female adult longevity (29.16 versus 17.73 days), and larger parasitoid body size than those reared on C. cephalonica. The pupation rate of Ch. bifoveolatus was higher when reared on C. cephalonica than on S. litura, but the emergence rate of Ch. bifoveolatus was similar between those reared on C. cephalonica and S. litura. The production costs for 100 parasitoid individuals were strikingly lower for C. cephalonica, representing 1.78- and 11.38-fold reductions compared with S. litura and FAW, respectively. The production efficiency of Ch. bifoveolatus using the factitious host C. cephalonica (20,400 individuals) exhibited a 44% increase in overall parasitoid yield relative to S. litura (13,600 individuals), and a 91% increase compared with cultivation on FAW (10,400 individuals).CONCLUSIONDespite some trade-offs in parasitoid fitness, rearing Ch. bifoveolatus on C. cephalonica offers substantial cost savings compared with rearing on Spodoptera hosts. These findings support the use of C. cephalonica as a practical, scalable host for augmentative biological control programs targeting FAW, balancing the economic feasibility without sacrificing significant field performance. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"57 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025498","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}

{"title":"Antifungal mechanism of Bacillus velezensis JLU-55 against maize pathogen Cochliobolus heterostrophus.","authors":"Maoxiang Li,Longhao Su,Yuanyuan Tian,Mengjiao Jia,Zhenping Wang,Meixi Zhao,Lei Zhao,Xianghui Zhang","doi":"10.1002/ps.70207","DOIUrl":"https://doi.org/10.1002/ps.70207","url":null,"abstract":"BACKGROUNDSouthern corn leaf blight (SCLB), caused by Cochliobolus heterostrophus, is a major disease that severely affects maize production globally, especially in tropical and subtropical regions. Conventional control strategies, such as chemical fungicides and resistant cultivars, are limited due to environmental and health concerns.RESULTSThis study explores Bacillus velezensis JLU-55 as a potential biological control agent against C. heterostrophus. The bacterial strain was isolated from the rhizosphere of maize and systematically evaluated for its antagonistic activity, plant growth-promoting traits, and underlying biocontrol mechanisms. Dual culture assays revealed that JLU-55 exhibited broad-spectrum antifungal activity against C. heterostrophus and other phytopathogens, including Setosphaeria turcica and Fusarium graminearum. The strain produces various hydrolytic enzymes - such as cellulase, protease, and amylase - as well as indole-3-acetic acid, which collectively enhance its biocontrol capabilities. Additionally, in vivo assays demonstrated that JLU-55 significantly reduces lesion development on maize leaves, functioning effectively both as a protective and curative treatment. Genome sequencing identified 11 gene clusters responsible for the synthesis of secondary metabolites, two of which were successfully characterized from JLU-55 extracts. Moreover, JLU-55 was found to induce the expression of key disease resistance genes in maize, indicating its capacity to activate host immune responses.CONCLUSIONThese findings suggest that Bacillus velezensis JLU-55 holds significant promise as a sustainable and environmental-friendly biocontrol agent for managing SCLB in maize production systems. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"53 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018169","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}

{"title":"Assessing alternative strategies to control almond red leaf blotch through the reduction of Polystigma amygdalinum inoculum in leaf litter.","authors":"Gemma Pons-Solé,Lidia Aparicio-Durán,Jordi Luque,Laura Torguet,Xavier Miarnau","doi":"10.1002/ps.70192","DOIUrl":"https://doi.org/10.1002/ps.70192","url":null,"abstract":"BACKGROUNDRed leaf blotch (RLB), caused by Polystigma amygdalinum, is a major foliar disease of almond trees in Mediterranean and Middle Eastern regions. While preventive fungicide applications are the main control strategy, cultural practices aimed at reducing pathogen inoculum in leaf litter are gaining relevance. This study evaluated the efficacy of four chemical treatments on fungal biomass and ascospore production in leaf litter and assessed the impact of two cultural practices-urea application and leaf litter removal-on airborne inoculum levels and disease incidence under field conditions.RESULTSUrea and lime sulfur significantly reduced ascospore production by 99% and 94%, respectively, compared to the untreated control. Urea was the only treatment that also significantly reduced fungal biomass. In field trials, leaf litter removal reduced airborne ascospores by 60% but did not significantly affect RLB incidence or severity. Urea application reduced airborne ascospores by 45% and led to a modest yet statistically significant 4% reduction in disease incidence.CONCLUSIONThis study highlights the potential of cultural practices to reduce the primary inoculum of P. amygdalinum in almond orchards. Urea application offers dual benefits by reducing both fungal biomass and ascospore release, contributing to modest disease suppression. For more effective and sustainable RLB control, these practices should be integrated into a broader management strategy that includes the selection of tolerant almond cultivars, preventive fungicide applications guided by forecasting models. © 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"24 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018171","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}

{"title":"Leveraging artificial intelligence and antibiotic data to facilitate the design of novel fungicides.","authors":"Ruo-Qi Yang,Hong-Hao Li,Jun-Ya Wang,Bo Li,Wmww Kandegama,Fan Wang,Guang-Fu Yang","doi":"10.1002/ps.70186","DOIUrl":"https://doi.org/10.1002/ps.70186","url":null,"abstract":"BACKGROUNDRapid advances in generative artificial intelligence (AI) are accelerating the process of pesticide development. However, transfer learning-based de novo design focuses on generating molecules that are highly similar to existing inhibitors, which may limit the exploration of novel scaffolds and thereby constrain innovative breakthroughs in pesticide development.RESULTSThis study proposes a new strategy for fungicide design using antibiotics. First, by combining pre-training and transfer learning, a character-level recurrent neural network model was able to generate antibiotic-like molecules that retained key features while avoiding excessive similarity to existing fungicides. Fungicide-like molecules were then further identified by training graph neural network models that could discriminate between fungicides and antibiotics. Interestingly, two of the generated molecules were found to share the same scaffold as florylpicoxamid, a recently approved fungicide that was not included in the training set. As a proof-of-concept, the inhibitory activity of the screened molecules against cytochrome bc1 complex was determined. Compound cp461 displayed enzyme inhibition comparable to that of florylpicoxamid, with a median inhibitory concentration of 17.9 ± 1.1 nm.CONCLUSIONOverall, the pioneering work leveraged AI and antibiotic data to facilitate the design of novel fungicides and provided a viable research idea for pesticide development. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"32 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018165","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}

{"title":"Poa annua becomes the first weed to evolve resistance to indaziflam applied preemergence and early-postemergence.","authors":"Joshua Wa Miranda,Todd A Gaines,Marcelo L Moretti","doi":"10.1002/ps.70214","DOIUrl":"https://doi.org/10.1002/ps.70214","url":null,"abstract":"BACKGROUNDHerbicide resistance evolution is a major challenge in agriculture. Poa annua L., a globally distributed and genetically diverse weed, has repeatedly evolved resistance to multiple herbicide sites of action due to its genetic plasticity and rapid life cycle. Indaziflam is widely used for P. annua control in several agroecosystems, with reports of postemergence resistance and a few confirmed cases of resistance to preemergence application. This study investigated suspected resistance to indaziflam in P. annua accessions from Oregon hazelnut orchards.RESULTSWhole-plant dose-response assays confirmed indaziflam resistance in eight accessions ranging from 2.5- to 51-fold relative to susceptible accessions, which had a lethal dose to 50% of the accession (LD50) of 1.0-3.4 g ha-1. Resistance increased with plant developmental stage and was most pronounced when indaziflam was applied early-postemergence, with some accessions surviving two- to four-fold the labeled rate in tree nut orchards (50-95 g ha-1). Field experiments confirmed reduced efficacy of preemergence and early-postemergence indaziflam treatments up to 195 g ha-1. Indaziflam efficacy declined significantly across all accessions at air temperatures 9 °C:1 °C (day/night), with LD50 values increasing up to eight-fold across accessions compared to 25 °C:12 °C (day/night). Enzyme inhibitor seed-based assays with cytochrome P450 and glutatione transferase inhibitors did not reverse resistance, suggesting resistance pathways other than enhanced metabolism may be involved.CONCLUSIONThis study provides the first confirmed cases of field-evolved resistance to indaziflam applied both preemergence and early-postemergence in P. annua. Resistance was most severe under cooler temperatures and postemergence use, highlighting environmental and developmental effects on indaziflam activity. © 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"18 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018170","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}

{"title":"Insights into the toxicity effects of indoxacarb against Spodoptera frugiperda using metabolomics combined with mass spectrometry imaging.","authors":"Lianlian Ma,Xuehua Shao,Yinyi Tang,Shuai Yang,Zhen Li,Zhixiang Zhang,Hanhong Xu,Xinzhou Wu","doi":"10.1002/ps.70195","DOIUrl":"https://doi.org/10.1002/ps.70195","url":null,"abstract":"BACKGROUNDAs one of the most destructive and invasive pests for various plants in China, Spodoptera frugiperda (Lepidoptera: Noctuidae) poses an enormous threat to food security and results in serious economic losses for harvesting and consumption of agricultural vegetables. To this end, indoxacarb has shown great promise as an effective insecticide against Spodoptera frugiperda. It is metabolized by insect esterases or amidases into the N-decarbomethoxy metabolite (DCJW), which is a key metabolite responsible for the insecticidal activity of indoxacarb. The efficiency of DCJW generation directly affects the efficacy of pest control against target species such as Spodoptera frugiperda. Despite these efforts, insights into in situ metabolic regulation of Spodoptera frugiperda toward indoxacarb remain unclear.RESULTSHerein, we systematically explored the toxic effects of indoxacarb on Spodoptera frugiperda, including growth and development, locomotion, feeding, enzyme activity, expression levels and spatial distribution of metabolites. After indoxacarb treatment for 48 h, Spodoptera frugiperda exhibited a longer movement distance and lower food consumption with detoxifying enzymes significantly affected. Combining complementary strengths of metabolomics and mass spectrometry imaging, this study not only identifies dysregulated metabolic changes in Spodoptera frugiperda but also visualizes the spatial distribution of key metabolites and lipids.CONCLUSIONCollectively, the findings suggest that the high toxicity of indoxacarb regarding Spodoptera frugiperda may be due to the inhibition of purine and amino acid metabolism, and mitochondrial damage, providing new perspectives for deciphering the toxicity mechanism between pesticides and target organisms. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"83 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145008868","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}

{"title":"Electrospinning to prepare water dispersible diniconazole/hydroxypropyl-γ-cyclodextrin nanofibers: increased bioavailability of diniconazole.","authors":"Shuang Gao,Yue Xiu,Yan Zhang,Meiqing Li,Fengrui Li,Lixia Zhao,Ying Fu,Fei Ye","doi":"10.1002/ps.70206","DOIUrl":"https://doi.org/10.1002/ps.70206","url":null,"abstract":"BACKGROUNDDiniconazole (DCZ) is a poorly water-soluble triazole fungicide. However, the water solubility of DCZ can be significantly enhanced by inclusion complexation with cyclodextrins. In order to improve the properties and bioavailability of pesticide fungicides DCZ, a new system of nanofibers was prepared by electrospinning and cyclodextrin encapsulation.RESULTSThe possibility of DCZ entering the hydroxypropyl-γ-cyclodextrin (HP-γ-CD) cavity was evidenced by molecular simulation and then DCZ/HP-γ-CD inclusion complex nanofibers were prepared by electrospinning. The formation of DCZ/HP-γ-CD complexes was confirmed by the results of scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, proton nuclear magnetic resonance (1H-NMR) and X-ray diffraction (XRD) characterization. Then the physical and antifungal properties of DCZ/HP-γ-CD inclusion complex nanofibers were investigated. The results showed that the thermal stability of DCZ/HP-γ-CD inclusion complex nanofibers was increased by 32 °C and the water solubility in HP-γ-CD solutions was increased by 7.5 times. Through water solubility researches and in vitro release researches, DCZ/HP-γ-CD inclusion complex nanofibers could quickly form a transparent solution and had a sustained release function. The antifungal researches showed that the antifungal performance of DCZ/HP-γ-CD inclusion complex nanofibers increased by 2.05 times.CONCLUSIONSBased on the new system of DCZ/HP-γ-CD inclusion complex nanofibers, the performance of the fungicide DCZ was improved and the bioavailability was improved to comply with the 'reduction and efficiency' effect of green chemistry. © 2025 Society of Chemical Industry.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"117 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018167","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}