Pest Management Science最新文献

{"title":"Chlorantraniliprole: bioactivation in coffee seedlings and control of resistant Leucoptera coffeella populations.","authors":"Beatriz Sousa Coelho, Suzany Aguiar Leite, Mateus Pereira Dos Santos, Paulo Vitor Coutinho Rocha, Naira Martins Prado, Nebsa da Silva Sousa, Sylvana Naomi Matsumoto, Raul Narciso Carvalho Guedes, Maria Aparecida Castellani, Aldenise Alves Moreira","doi":"10.1002/ps.71278","DOIUrl":"https://doi.org/10.1002/ps.71278","url":null,"abstract":"<p><strong>Background: </strong>The diamide chlorantraniliprole stands out for its high performance in controlling agricultural pests, with high selectivity and reduced environmental impact. In coffee cultivation, this insecticide has been widely employed for the management of the coffee leaf miner (Leucoptera coffeella Guérin-Méneville, 1842). However, intensive use has favored the selection of resistant populations, compromising control efficacy and intensifying biotic stress in plants. This study aimed to evaluate the morphophysiological effects of chlorantraniliprole on coffee seedlings (Coffea arabica L., cv. IAC144-Catuaí Vermelho) infested by L. coffeella populations with different resistance levels. A total of 12 treatments (six insecticide concentrations applied to two populations: susceptible and resistant) with 12 replicates were conducted. Physiological assessments (transpiration, stomatal conductance, assimilation, and internal carbon dioxide concentration) were performed at 0, 20, and 105 days after application (DAA). Growth traits (number of leaves, plant height, stem diameter, leaf area, and biomass), along with Soil Plant Analysis Development (SPAD) index and leaf miner infestation index, were quantified at 0, 20, 40, 60, 80, and 105 DAA.</p><p><strong>Results: </strong>Indicated a positive effect of chlorantraniliprole on the number of leaves, leaf area, and both fresh and dry shoot biomass in plants infested with the susceptible population. In plants exposed to the resistant population, increasing insecticide concentration and plant age promoted stem diameter growth, which may represent a compensatory response to continuous stress caused by persistent infestation.</p><p><strong>Conclusion: </strong>Besides being effective in controlling susceptible L. coffeella, chlorantraniliprole may also act as a plant bioactivator, representing a strategic tool in integrated pest management. © 2026 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148890539","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":"Discovery, validation, and mechanistic investigation of 5-fluorobenzothiazol-2-amine as a potential lead compound for pre-emergence herbicide development.","authors":"Jianghong Cui, Mengxin Wei, Xinyang Hu, Songlan Hou, Jineng Chen, Yangyang Mo, Wenwei Tang, Fayang Xie","doi":"10.1002/ps.71250","DOIUrl":"https://doi.org/10.1002/ps.71250","url":null,"abstract":"<p><strong>Background: </strong>The discovery of lead compounds is critical for the development of new herbicides. To obtain novel potential lead compounds, herbicidal activities of a series of benzothiazole derivatives were evaluated in this study. Mechanistic investigation and structural optimization were subsequently conducted for the most active compound.</p><p><strong>Results: </strong>5-fluorobenzothiazol-2-amine (C25) exhibited the most potent inhibition effect against root (IC₅₀ = 4.50 μg mL^-1) and shoot growth (IC₅₀ = 11.13 μg mL^-1) of Bidens pilosa L. seedlings among all tested compounds. It also showed good crop selectivity, with no significant inhibitory effect on the growth of maize seedlings. Compound C25 treatment caused severe damage in the root tip of B. pilosa, including cell viability decrease and cell membrane integrity loss due to the excessive reactive oxygen species accumulation. Transcriptomic analysis results revealed that the expression level of key genes in auxin signal transduction pathway, including members of the AUX/IAA, ARF, GH3, and SAUR families, were significantly altered in seedlings of C25-treated group. Molecular docking further identified that auxin influx carrier 1 (AUX1) is a possible target protein. Finally, a series of C25 derivatives were designed and synthesized, and part of the derivatives also exhibited marked herbicidal activity.</p><p><strong>Conclusion: </strong>Compound C25 is a new potential lead compound for the development of novel pre-emergence herbicides with potent activity, good selectivity, synthetic accessibility and structural modifiability. It may inhibit weed seedling growth through a unique dual mechanism including the induction of excessive oxidative stress and the disruption of IAA signal transduction pathway. © 2026 Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148890495","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":"Herbicidal activity and mode-of-action of the natural product aureonitol isolated from Chaetomium coarctatum NEAU-Z3.","authors":"Wenshuai Song, Hongbo Pang, Yuhan Guo, Lixue Wang, Ruimin Ren, Haifeng Zhang, Lifeng Guo, Xiangjing Wang, Donglan Tian, Junwei Zhao, Wensheng Xiang","doi":"10.1002/ps.71257","DOIUrl":"https://doi.org/10.1002/ps.71257","url":null,"abstract":"<p><strong>Background: </strong>Fungal natural products offer significant advantages, including novel modes-of-action (MoAs), high environmental compatibility, safety to nontarget organisms and low resistance risk, making them valuable resources for developing eco-friendly and effective herbicides. This study evaluated the herbicidal activity of aureonitol, a compound derived from Chaetomium coarctatum NEAU-Z3, and elucidated its molecular mode-of-action. These findings provide a promising compound and theoretical foundation for developing novel and highly effective herbicides.</p><p><strong>Results: </strong>Aureonitol exhibited significant herbicidal activity, with median inhibitory concentration (IC₅₀) values of 0.170, 0.122, 0.200 and 0.176 mg mL^-1 for shoot growth of Portulaca oleracea L., Echinochloa crus-galli, Amaranthus retroflexus L. and Setaria viridis (L.) Beauv, respectively, and 0.130, 0.138, 0.186 and 0.106 mg mL^-1 for root growth. Postemergence, treated with 0.3 mg mL^-1, significantly reduced weed height and fresh weight by >50%, with P. oleracea showing the highest inhibition (71.93%). Meanwhile, aureonitol induced reactive oxygen species (ROS) accumulation and disrupted redox homeostasis in P. oleracea and E. crus-galli, thereby inhibited weed growth. Crop safety evaluations confirmed good safety for maize, wheat and rice. Transcriptomic analysis further elucidated the molecular MoA, revealing that aureonitol affects several key metabolic pathways in E. crus-galli, including diterpenoid biosynthesis and plant hormone signalling, phenylpropanoid biosynthesis, cell-wall metabolism, and phenylalanine, tyrosine and tryptophan biosynthesis and metabolism.</p><p><strong>Conclusion: </strong>These findings confirm aureonitol's herbicidal activity and modes-of-action, highlighting its potential as a compound for developing novel and highly effective herbicides for agricultural weed management and crop protection. © 2026 Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148890532","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 the aerial application for mountain orchard sanitation management practices: effects of tree shape on spray distribution in citrus.","authors":"Weixiang Yao, Qi Zheng, Yuzhou Liu, Suyuan Ma, Zhimin Yuan, Chunling Chen, Shuang Guo, Yanhua Meng, Yubin Lan","doi":"10.1002/ps.71267","DOIUrl":"https://doi.org/10.1002/ps.71267","url":null,"abstract":"<p><strong>Background: </strong>Chemical spray-based pest and disease control in mountainous citrus orchards presents operational challenges. Although aerial application technologies have been widely studied, the spray performance of manned helicopters under complex terrain, particularly during the post-harvest orchard sanitation period, remains insufficiently applied. Furthermore, citrus tree shape may considerably influence droplet deposition. Therefore, a field experimental study was conducted to evaluate the feasibility and operational stability of manned helicopter spraying in mountainous citrus orchards.</p><p><strong>Results: </strong>Droplet deposition exhibited a clear spatial pattern of top mountain (TM) > bottom mountain (BM) > middle mountain (MM), with significantly higher deposition at TM than at MM (P < 0.05). Flight altitude significantly affected droplet deposition, and T2 (flight altitude of 10 m) achieved the best deposition uniformity, outperforming T1 (7 m) and T3 (13 m). Within the TM area, open-center (OC) trees consistently showed higher droplet coverage than round-head (RH) trees, with maximum values up to 1.49 times greater, whereas RH trees exhibited higher coverage in the BM area. Frequency distribution analysis further indicated a more concentrated droplet deposition distribution within OC canopies.</p><p><strong>Conclusion: </strong>Maintaining the flight altitude of approximately 10 m above the canopy can improve the spraying effectiveness of manned helicopters in mountainous citrus orchards during post-harvest sanitation. Moreover, optimizing trees according to hillside position may further enhance droplet deposition, with OC shapes better suited for TM and RH shapes more favorable for BM. This study can provide practical guidance for precise and efficient helicopter-based sanitation spraying in mountainous citrus orchards. © 2026 Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148890515","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":"Unlocking antifungal mechanisms of natural 3-(oxazole-5-yl) indole compound derived from Streptomyces syringium against plant gray mold caused by Botrytis cinerea.","authors":"Dan Wang, Jing Duan, Chuang Zhang, Xuan Hu, Hequan Zhu, Shaoyong Zhang, Sha Zhou, Jie Chen, Ezzeldin Ibrahim, Haipin Lin","doi":"10.1002/ps.71251","DOIUrl":"https://doi.org/10.1002/ps.71251","url":null,"abstract":"<p><strong>Background: </strong>Plant fungal diseases cause significant agricultural losses, and Streptomyces-derived antifungal compounds offer a promising biocontrol strategy. This study aimed to isolate and characterize bioactive metabolites from Streptomyces syringium LZ036 and evaluate their activity and mechanism of action against Botrytis cinerea.</p><p><strong>Results: </strong>A strain LZ036 with broad-spectrum antifungal activity was identified as Streptomyces syringium. The 3-(oxazole-5-yl) indole compound NL3 isolated from this strain exhibited potent broad-spectrum antifungal activity, especially against Botrytis cinerea. Compound NL3 inhibited fungal growth and development by inducing severe oxidative damage and membrane disruption. And it could trigger jasmonic acid (JA)-dependent induced systemic resistance (ISR) in plants. Transcriptomic analysis of compound NL3-treated Botrytis cinerea revealed genome-wide transcriptional alterations, including disruption of energy metabolism and mitochondrial function. Key genes related to mitogen-activated protein kinase (MAPK) signaling pathway down-regulated significantly, among which the catalytic S_TKc domain of Bcste7 exhibited a predicted interaction with compound NL3 through hydrophobic interactions and hydrogen bonding.</p><p><strong>Conclusion: </strong>The Streptomyces syringium-derived compound NL3 shows high potential as a green fungicide, acting through multiple mechanisms. These findings advance the development of Streptomyces-based antifungal agents. © 2026 Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885639","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":"Characterization of Cry2Ab2 resistance in Crocidosema sp. (Lepidoptera: Tortricidae): resistance selection, inheritance, cross-resistance patterns, and fitness costs.","authors":"Venicius E Pretto, Jéssica Ls Grzybowski, Otavio Liberalesso, Daniela N Godoy, Arthur Dallanora, Marylia P Cargnin, Renato J Horikoshi, Sandy S Silva, Ramiro Fl Ovejero, Leonardo Miraldo, Samuel Martinelli, Graham P Head, Oderlei Bernardi","doi":"10.1002/ps.71285","DOIUrl":"https://doi.org/10.1002/ps.71285","url":null,"abstract":"<p><strong>Background: </strong>The soybean bud borer, Crocidosema sp., evolved field resistance to Cry1Ac soybean in Brazil, raising concerns regarding the durability of Bacillus thuringiensis (Bt) soybean technologies and potential evolution of resistance to additional Bt proteins. Here, a Cry2Ab2-resistant strain of Crocidosema sp. was selected and characterized to investigate resistance inheritance, cross-resistance to Cry1 proteins, and fitness costs.</p><p><strong>Results: </strong>Laboratory selection with leaves of Cry2Ab2 soybean generated a resistant strain of Crocidosema sp. exhibiting > 15 000-fold resistance relative to a susceptible strain. Reciprocal crosses showed resistance ratios of 8.46- and 30.17-fold, suggesting autosomal inheritance, although a maternal effect could not be completely excluded. Effective dominance (D_ML) indicated incompletely recessive resistance under exposure to Cry2Ab2 in diet-overlay bioassays (D_ML = 0.08-0.25) and on Cry2Ab2 soybean (D_ML = 0.16-0.26). Backcross analyses indicated a major-gene contribution, with potential involvement of additional genetic factors. Bioassays with Cry1Ac and Cry1A.105 proteins and Bt soybean revealed no cross-resistance between Cry2Ab2 and these Cry1 proteins. Fitness assessments indicated no apparent cost of resistance, with a higher intrinsic rate of population increase (rₘ) in the resistant than susceptible strain (0.112 versus 0.098) and a relative fitness of 1.14.</p><p><strong>Conclusions: </strong>Resistance to Cry2Ab2 in Crocidosema sp. appears to be autosomal and incompletely recessive, with a major-gene contribution to the resistance phenotype. Cry2Ab2 resistance did not confer cross-resistance to Cry1Ac or Cry1A.105, supporting Cry2Ab2 as an additional mode of action in Bt soybean technologies. The lack of an apparent fitness cost may favor the persistence of resistance alleles in the field, reinforcing the need for effective resistance management. © 2026 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885627","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":"Comprehensive analysis of microtubule-inhibiting herbicides reveals shared subcellular phenotypes and distinct resistance profiles.","authors":"Katharina Kaprocki, Jennifer Blau, Michael Betz, Jessica Knox, Jens Lerchl, Philipp Johnen, Selene Garcia-Hernandez","doi":"10.1002/ps.71261","DOIUrl":"https://doi.org/10.1002/ps.71261","url":null,"abstract":"<p><strong>Background: </strong>Herbicides that disrupt microtubules have historically been classified by the Herbicide Resistance Action Committee (HRAC) into microtubule assembly inhibitors (Group 3) and microtubule organization inhibitors (Group 23); however, this classification may not fully reflect their underlying modes of action.</p><p><strong>Results: </strong>Using a unified approach combining subcellular phenotyping in Nicotiana tabacum cv. Bright Yellow 2 (BY-2) cells and resistance profiling in Eleusine indica and Chlamydomonas reinhardtii, we show that all tested herbicides produce indistinguishable, dose-dependent subcellular effects, including microtubule depolymerization, multipolar spindle formation, mitotic arrest, and multinucleation. At the resistance level, the α-tubulin T239I mutation confers strong resistance to all microtubule-inhibiting herbicides except the carbamates and propyzamide, whereas several β-tubulin mutations confer resistance to propyzamide.</p><p><strong>Conclusion: </strong>These findings reveal distinct sites of action across chemical classes and demonstrate that resistance profiles - rather than subcellular phenotypes - provide a more robust basis for classification. Our results support redefining Group 3 as α-tubulin binders and relocating propyzamide to Group 23, now described as microtubule-interference herbicides with an unresolved site of action, strengthening the mechanistic foundation for improved classification and resistance-management strategies. © 2026 BASF Agricultural Solutions Deutschland GmbH. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878614","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":"Photocaged abscisic acid enhances rice salt tolerance via sustained signaling and multilevel stress modulation.","authors":"Qi Yin, Yongchao Zhang, Yuqian Hu, Ang Li, Lei Shi, Xiaoguang Shao, Zhong Li, Wen Fu, Xusheng Shao","doi":"10.1002/ps.70939","DOIUrl":"10.1002/ps.70939","url":null,"abstract":"<p><strong>Background: </strong>Although abscisic acid (ABA) is essential for improving plant tolerance to salt stress, its practical use in agriculture is severely limited by rapid photodegradation, poor lipophilicity, and short-lived activity. Here, three photo-caged ABA derivatives were developed as light-responsive ABA delivery systems and systematically compared with free ABA.</p><p><strong>Results: </strong>All three photo-caged ABA derivatives showed sustained bioactivity in seed germination assays of Arabidopsis thaliana and rice, indicating prolonged ABA action. Under salt stress, NV (4,5-dimethoxy-2-nitrobenzyl bromide4)-ABA performed best. Compared with free ABA, NV-ABA enhanced seedling salt tolerance, promoted chlorophyll recovery, and increased shoot and root fresh weights by 36% and 18%. It also better maintained antioxidant homeostasis and moderate ABA signaling. Sustained expression of OsP5CS1, OsP5CR, OsNHX1, and OsRAB16A supported prolonged stress regulation.</p><p><strong>Conclusion: </strong>This study developed a photo-controlled strategy for precise ABA delivery, improving ABA stability and utilization, prolonging bioactivity, and enhancing crop salt tolerance, thus providing a novel approach for ABA application in crop stress regulation. © 2026 Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":"8921-8935"},"PeriodicalIF":4.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13453218/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148051336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rice dwarf virus upregulates the odorant receptor co-receptor of Nephotettix cincticeps to enhance perception of 2-heptanol emitted from virus-infected rice and promote its transmission.","authors":"Qingsong Zhang, Fulin Zhang, Xintong Wang, Meiyu Wang, Hehe Cao, Zhaozhi Lu, Gongyin Ye, Xuefei Chang","doi":"10.1002/ps.70899","DOIUrl":"10.1002/ps.70899","url":null,"abstract":"<p><strong>Background: </strong>Insect odorant receptor co-receptors (Orcos) are pivotal for insect perception of host plant volatiles. We previously found that 2-heptanol-released from rice dwarf virus (RDV)-infected rice plants-repels viruliferous green rice leafhoppers (GRLHs, Nephotettix cincticeps), redirecting them to feed on RDV-free plants and thereby facilitating viral spread. However, whether Orco in N. cincticeps (NcinOrco) influences the detection of this repellent volatile and contributes to viral transmission remains unknown.</p><p><strong>Results: </strong>Here, we found that NcinOrco contains seven transmembrane domains and is phylogenetically conserved. Expression profiling revealed that NcinOrco exhibits antennal-predominant expression (~5-fold) that is significantly upregulated upon RDV acquisition (~2-fold). Crucially, RNAi-mediated silencing of NcinOrco abolished the repellent behavioral response of viruliferous GRLHs (VG) to 2-heptanol (mean number of VG to paraffin oil versus 2-heptanol: dsGFP, 9.0 versus 4.4, P < 0.001; dsNcinOrco, 7.4 versus 7.0, P > 0.05), eliminated preference for RDV-free plants (mean number of VG on RDV-free versus RDV-infected: dsGFP, 9.5 versus 5.1, P < 0.001; dsNcinOrco, 7.8 versus 7.0, P > 0.05), and impaired RDV transmission efficiency (mean transmission rates on MH63 versus MH63 + 2-heptanol: dsGFP, 76% versus 35%, P < 0.001; dsNcinOrco, 51% versus 52%, P > 0.05).</p><p><strong>Conclusion: </strong>Our results indicate that NcinOrco is essential for detecting a key host-emitted repellent volatile, revealing how a plant virus may alter a core olfactory component to modify vector behavior and aid its transmission. Together, these findings contribute to the understanding of insect chemoreception under pathogenic stress and highlight a potential molecular interface in plant-virus-vector interactions. © 2026 Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":"8488-8498"},"PeriodicalIF":4.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13453239/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147979717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"UAV ultralow-volume spray technology of thiamethoxam and control efficacy against Brevicoryne brassicae.","authors":"Yujun Long, Haiyan Zhang, Bangyan Song, Guohui Liao, Minggui Chen, Xiangyan Chen, Lixin Qin, Feng Zhu","doi":"10.1002/ps.70909","DOIUrl":"10.1002/ps.70909","url":null,"abstract":"<p><strong>Background: </strong>Plant protection unmanned aerial vehicles (UAV) provide an effective solution for aphid control in oilseed rape. However, the absence of dedicated formulations tailored for UAV application currently limits the full exploitation of their high efficiency. Therefore, the development of novel insecticide formulations is of great importance.</p><p><strong>Results: </strong>A ultralow-volume liquid (UL) suitable for plant protection UAV application was developed. The developed UL has a low surface tension, fast wetting speed, strong anti-volatility and a long effective period. Thiamethoxam UL at a dosage of 15 g a.i. ha^-1 achieved 94.60% control efficacy against Brevicoryne brassicae 21 days after treatment. The dissipation dynamics of thiamethoxam in rapeseed followed first-order kinetics, with a degradation half-life of 4.35-5.44 days.</p><p><strong>Conclusion: </strong>The developed thiamethoxam UL, when applied using plant protection UAVs, effectively addresses multiple challenges in rapeseed cultivation, including rural labor shortages, hydrophobic rapeseed surfaces, difficulties in manual spraying during the rapeseed pod period, and risks of pesticide poisoning. This technology demonstrates significant potential for widespread adoption in water-scarce mountainous regions. © 2026 Society of Chemical Industry.</p>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":" ","pages":"8599-8608"},"PeriodicalIF":4.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13453156/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147947289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}