Simeon Ross, Fei Yang, José C. Santiago-González, Heba Abdelgaffar, Dawson D. Kerns, Juan Luis Jurat-Fuentes, Xiaocun Sun, Dayna Collett, David L. Kerns
{"title":"Evaluation of GS-omega/kappa-Hxtx-Hv1a and Bt toxins against Bt-resistant and -susceptible strains of Helicoverpa zea (Boddie) and Spodoptera frugiperda (J.E. Smith)","authors":"Simeon Ross, Fei Yang, José C. Santiago-González, Heba Abdelgaffar, Dawson D. Kerns, Juan Luis Jurat-Fuentes, Xiaocun Sun, Dayna Collett, David L. Kerns","doi":"10.1002/ps.8725","DOIUrl":"https://doi.org/10.1002/ps.8725","url":null,"abstract":"<i>Helicoverpa zea</i> and <i>Spodoptera frugiperda</i> are destructive insect pests of cotton and corn. Both have evolved practical resistance to transgenic crops producing <i>Bacillus thuringiensis</i> (<i>Bt</i>) toxins in the United States. GS-omega/kappa-Hxtx-Hv1a (ω/κ-Hv1a) is a novel biopesticide derived from spider venom with activity against lepidopteran pests. The efficacy of ω/κ-Hv1a is dependent on combining it with a facilitator product such as a <i>Bt</i>-based insecticide. However, it is unknown if ω/κ-Hv1a can be an alternative for the management of <i>Bt</i> resistance. In this study, we tested the effect of ω/κ-Hv1a alone or in the presence of <i>Bt</i> toxins against susceptible and resistant <i>H. zea</i> and <i>S. frugiperda.</i>","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"129 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435692","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":"Bio-based two-dimensional amphiphile with hierarchical self-assembly for enhancing pesticide utilization and reducing environmental risks","authors":"Yanling Wu, Songhao Zhang, Zhenping Bao, Rui Liu, Fengzhe Sun, Yue Wang, Haiqi Huang, Yuxia Gao, Yongqiang Ma, Chenhui Zhang, Fengpei Du","doi":"10.1002/ps.8717","DOIUrl":"https://doi.org/10.1002/ps.8717","url":null,"abstract":"Biotic and abiotic stresses threaten crop growth and yield. Agrochemicals are an important way to mitigate biotic stress, while frequent low utilization and potential environmental risk affect their sustainable use. In order to improve pesticide utilization, it is common practice to add tank-mix adjuvants by reducing surface tension or forming spherical self-assembly. However, there is a lack of quantitative indicators to screen suitable molecules for sustainable application. In this work, critical factors based on physicochemical properties, and kinetic and thermodynamic parameters are applied to analyze regulatory mechanisms in dynamic processes, and ultimately to establish an integrated strategy for the management of stresses.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"12 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427264","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}
Yuanlin Qi, Mahima Krishnan, Matthew Tucker, Christopher Preston
{"title":"A point mutation in IAA34 confers resistance to the auxin herbicide 2,4-D in Sisymbrium orientale","authors":"Yuanlin Qi, Mahima Krishnan, Matthew Tucker, Christopher Preston","doi":"10.1002/ps.8720","DOIUrl":"https://doi.org/10.1002/ps.8720","url":null,"abstract":"<i>Sisymbrium orientale</i> has evolved resistance to 2,4-D in Australia due to a 27 bp deletion in <i>SoIAA2</i>. However, one population of <i>Sisymbrium orientale</i> resistant to 2,4-D (R1) did not contain the <i>SoIAA2</i><sub><i>Δ27</i></sub>, suggesting another 2,4-D resistance mechanism was present in this population. Here, we reported a novel target-site resistance mechanism of 2,4-D in the R1 population.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"2 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427292","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":"Inhibition of EPSPS overexpression of glyphosate-resistant Lolium perenne L. with a clethodim and glyphosate mixture","authors":"Marcos Yanniccari, Ramón Gigón","doi":"10.1002/ps.8719","DOIUrl":"https://doi.org/10.1002/ps.8719","url":null,"abstract":"Glyphosate-resistant populations of some grass species have demonstrated high sensitivity to combinations of glyphosate and acetyl-CoA carboxylase (ACCase)-inhibiting herbicides. Nevertheless, it is unclear how glyphosate contributes to the control of glyphosate-resistant plants when combined with other active ingredients such as clethodim. The current work aimed to detect if glyphosate-resistant <i>Lolium perenne</i> L. biotypes associated with target-site [5-enolpyruvylshikimate-3-phosphate synthase (EPSPS)] overexpression and <i>EPSPS</i> mutation (P106S) as mechanisms of resistance are equally controlled by clethodim or clethodim plus glyphosate compared to a susceptible counterpart.","PeriodicalId":218,"journal":{"name":"Pest Management Science","volume":"63 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401614","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}