Pesticide Biochemistry and Physiology最新文献_第10页

The irregular developmental duration mainly caused by the broad-complex in Chilo suppressalis 奇洛虫的发育期不规则，主要是由宽复合体引起的

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-19 DOI: 10.1016/j.pestbp.2024.106090

{"title":"The irregular developmental duration mainly caused by the broad-complex in Chilo suppressalis","authors":"","doi":"10.1016/j.pestbp.2024.106090","DOIUrl":"10.1016/j.pestbp.2024.106090","url":null,"abstract":"<div>Chilo suppressalis, a critical rice stem borer pest, poses significant challenges to rice production due to its overlapping generations and irregular developmental duration. These characteristics complicate pest management strategies. According to the dynamic analysis of the overwintering adults of C. suppressalis in fields, it indicates that the phenomenon of irregular development of C. suppressalis exists widely and continuously. This study delves into the potential role of the Broad-Complex (Br-C) gene in the developmental duration of C. suppressalis. Four isoforms of Br-C, named CsBr-C Z1, CsBr-C Z2, CsBr-C Z4, and CsBr-C Z7, were identified. After CsBr-Cs RNAi, the duration of larva development spans extended obviously. And, the average developmental duration of dsCsBr-Cs feeding individuals increased obviously. Meanwhile, the average developmental duration of the dsCsBr-C Z2 feeding group was the longest among all the RNAi groups. After dsCsBr-Cs feeding continuously, individuals pupated at different instars changed obviously: the proportion of individuals pupated at the 5th instar decreased and pupated at the 7th instar or higher increased significantly. Moreover, the pupation rate of dsCsBr-Cs (except dsCsBr-C Z7) were significantly lower than that of dsGFP. The same results were obtained from the mutagenesis in CsBr-C genes mediated by CRISPR/Cas9. The average developmental duration of CsBr-Cs knockout individuals was significantly prolonged. And, the instar of pupation in knockout individuals was also delayed significantly. In conclusion, this work showed that CsBr-Cs played a crucial role in pupal commitment and affected the developmental duration of C. suppressalis significantly.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040026","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

Development of an agroinfiltration-based transient hairpin RNA expression system in pak choi leaves (Brassica rapa ssp. chinensis) for RNA interference against Liriomyza sativae 在白菜叶（Brassica rapa ssp. chinensis）中开发一种基于农业渗透的瞬时发夹式 RNA 表达系统，用于 RNA 干扰菜青虫

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-19 DOI: 10.1016/j.pestbp.2024.106091

{"title":"Development of an agroinfiltration-based transient hairpin RNA expression system in pak choi leaves (Brassica rapa ssp. chinensis) for RNA interference against Liriomyza sativae","authors":"","doi":"10.1016/j.pestbp.2024.106091","DOIUrl":"10.1016/j.pestbp.2024.106091","url":null,"abstract":"<div>The vegetable leafminer (Liriomyza sativae) is a devastating invasive pest of many vegetable crops and horticultural plants worldwide, causing serious economic loss. Conventional control strategy against this pest mainly relies on the synthetic chemical pesticides, but widespread use of insecticides easily causes insecticide resistance development and is harmful to beneficial organisms and environment. In this context, a more environmentally friendly pest management strategy based on RNA interference (RNAi) has emerged as a powerful tool to control of insect pests. Here we report a successful oral RNAi in L. sativae after feeding on pak choi (Brassica rapa ssp. chinensis) that transiently express hairpin RNAs targeting vital genes in this pest. First, potentially lethal genes are identified by searching an L. sativae transcriptome for orthologs of the widely used V-ATPase A and actin genes, then expression levels are assessed during different life stages and in different adult tissues. Interestingly, the highest expression levels for V-ATPase A are observed in the adult heads (males and females) and for actin in the abdomens of adult females. We also assessed expression patterns of the target hairpin RNAs in pak choi leaves and found that they reach peak levels 72 h post agroinfiltration. RNAi-mediated knockdown of each target was then assessed by letting adult L. sativae feed on agroinfiltrated pak choi leaves. Relative transcript levels of each target gene exhibit significant reductions over the feeding time, and adversely affect survival of adult L. sativae at 24 h post infestation in genetically unmodified pak choi plants. These results demonstrate that the agroinfiltration-mediated RNAi system has potential for advancing innovative environmentally safe pest management strategies for the control of leaf-mining species.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049456","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

Resistant risk and resistance mechanism of florylpicoxamid in Colletotrichum gloeosporioides isolated from Chinese walnut 从中国核桃中分离的球孢子菌对氟啶虫酰胺的抗性风险和抗性机理

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-18 DOI: 10.1016/j.pestbp.2024.106093

{"title":"Resistant risk and resistance mechanism of florylpicoxamid in Colletotrichum gloeosporioides isolated from Chinese walnut","authors":"","doi":"10.1016/j.pestbp.2024.106093","DOIUrl":"10.1016/j.pestbp.2024.106093","url":null,"abstract":"<div>Colletotrichum gloeosporioides is the causal pathogen for the devastating walnuts anthracnose. A novel quinone inside inhibitor (QiI) fungicide florylpicoxamid has strong inhibitory efficacy against C. gloeosporioides. This study looked into the resistance risk and mechanism of C. gloeosporioides to florylpicoxamid. The basal level sensitivity of C. gloeosporioides isolates (n = 102) to florylpicoxamid was established with an average 50% mycelial growth inhibition concentration (EC50) value of 0.069 ± 0.035 μg/mL. Six stable florylpicoxamid-resistant mutants with resistance factors of >1000 were produced. The fitness of every mutant was much lower than that of their parental isolates. In general, the resistance risk of C. gloeosporioides to florylpicoxamid would be moderate. Molecular docking results revealed that the amino acid substitutions A37V, and S207L in CgCytb lead to a reduction in the binding affinity between florylpicoxamid and CgCytb, indicating that these two mutations (S207L and A37V in CgCytb) indeed confer florylpicoxamid resistance in C. gloeosporioides. These findings offer a fresh viewpoint on the mechanism underlying QiI fungicide resistance and could support the prudent application of florylpicoxamid in the future to combat walnut anthracnose.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021060","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

Metconazole inhibits fungal growth and toxin production in major Fusarium species that cause rice panicle blight 甲康唑抑制引起水稻圆锥花序枯萎病的主要镰刀菌菌种的真菌生长和毒素产生

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-18 DOI: 10.1016/j.pestbp.2024.106092

{"title":"Metconazole inhibits fungal growth and toxin production in major Fusarium species that cause rice panicle blight","authors":"","doi":"10.1016/j.pestbp.2024.106092","DOIUrl":"10.1016/j.pestbp.2024.106092","url":null,"abstract":"<div>Rice panicle blight (RPB) caused by various Fusarium spp. is an emerging disease in the major rice-growing regions of China. Epidemics of this disease cause significant yield loss and reduce grain quality by contaminating panicles with different Fusarium toxins. However, there is currently no registered fungicide for the control of RPB in China. The 14α-demethylation inhibitor (DMI) fungicide metconazole has been shown to be effective against several Fusarium spp. that cause wheat head blight, wheat crown rot and maize ear rot. In this study, we investigated the specific activity of metconazole against six Fusarium spp. that cause RPB. Metconazole significantly inhibited mycelial growth, conidium formation, germination, germ tube elongation and major toxin production in Fusarium strains collected from major rice-growing regions in China, as well as disrupting cell membrane function by inhibiting ergosterol biosynthesis. Greenhouse experiments indicated a significant reduction in blight occurrence and toxin accumulation in rice panicles treated with metconazole. Overall, our study demonstrated the potential of metconazole for managing RPB and toxin contamination, as well as providing insight into its bioactivities and modes of action of metconazole against distinct Fusarium spp.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021061","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

New insights about the toxicity of 2,4-D: Gene expression analysis reveals modulation on several subcellular responses in Chironomus riparius 关于 2,4-D 毒性的新见解：基因表达分析揭示了对摇蚊（Chironomus riparius）若干亚细胞反应的调控

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-18 DOI: 10.1016/j.pestbp.2024.106088

{"title":"New insights about the toxicity of 2,4-D: Gene expression analysis reveals modulation on several subcellular responses in Chironomus riparius","authors":"","doi":"10.1016/j.pestbp.2024.106088","DOIUrl":"10.1016/j.pestbp.2024.106088","url":null,"abstract":"<div>Herbicides are the main class of pesticides applied in crops and are capable of polluting the surrounding freshwater system; thus, understanding their impact on non-target species, whose mechanism of action is not described, helps to elucidate the real risks of these pollutants to the environment. 2,4-dichlorophenoxyacetic acid (2,4-D) is frequently detected in water and, due to its persistence, poses a risk to wildlife. In this way, the present work aimed to describe the implication of exposure to concentrations of 2,4-D already reported in aquatic environments in several physiological mechanisms of C. riparius at molecular and biochemical levels. To achieve this, bioassays were conducted with fourth instar larvae exposed to three concentrations of 2,4-D (0.1, 1.0, and 7.5 μg L−1). Larvae were collected after 24 and 96 h of exposure, and the expression of 42 genes, related to six subcellular mechanisms, was assessed by Real-Time PCR (RT-PCR). Besides, the activity of the enzymes catalase (CAT), glutathione S-transferase (GST), and acetylcholinesterase (AChE) was determined. The main metabolic route altered after exposure to 2,4-D was the endocrine system (mainly related to 20-hydroxyecdysone and juvenile hormone), confirming its endocrine disruptor potential. Four of the eleven stress response genes studied were down-regulated, and later exposure modulated DNA-repair genes suggesting genotoxic capacity. Moreover, only one gene from each detoxification phase was modulated at short exposure to 1.0 μg L−1. The molecular responses were not dose-dependent, and some early responses were not preserved after 96 h, indicating a transient response to the herbicide. Exposure to 2,4-D did not alter the activity of CAT, GST, and AChE enzymes. The responses described in this study reveal new mechanistic pathways of toxicity for 2,4-D in non-target organisms and highlight potential ecological consequences for chironomids in aquatic systems at the edges of agricultural fields.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040024","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

Homology-based characterization of the cis-regulatory elements modulate flavone induction of CYP321A1 in Helicoverpa armigera 基于同源表征的顺式调控元件对Helicoverpa armigera中CYP321A1黄酮诱导的调节作用

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-17 DOI: 10.1016/j.pestbp.2024.106081

{"title":"Homology-based characterization of the cis-regulatory elements modulate flavone induction of CYP321A1 in Helicoverpa armigera","authors":"","doi":"10.1016/j.pestbp.2024.106081","DOIUrl":"10.1016/j.pestbp.2024.106081","url":null,"abstract":"<div>Xenobiotic response element (XRE) to flavone was the cis- regulatory elements that mediates the induction of the allelochemical-metabolizing CYP321A1 gene from Helicoverpa zea. However, it was unknown whether the XRE-Fla element existed in other species. Recently we have identified and cloned the CYP321A1 gene with promoter region in a related species, Helicoverpa armigera. Sequence similarity of two orthologous CYP321A1 genes was 97.27%, but the promoter sequence similarity was only 56.32%. Sequence alignment showed the XRE-Fla like element owns three mutations in H. armigera compared with H. zea. Progressive 5′ deletions and internal mutation indicated that H. armigera XRE-Fla was the essential element of CYP321A1 gene in response to flavone. XRE-Fla mutations and EMSA analysis confirmed that the H. armigera XRE-Fla element binding factor was stronger than H. zea. The findings indicate the XRE element mutations mainly contribute to the differences between the flavone-induced expressions of two CYP321A1 genes, which improve the flexibility and adaptability for allelochemical response of H. armigera.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142083940","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

β-Caryophyllene wrapped by nanoliposomes efficiently increases the control effect on Bemisia tabaci MED 纳米脂质体包裹的 β-茶碱能有效提高对烟粉虱 MED 的防治效果

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-14 DOI: 10.1016/j.pestbp.2024.106082

{"title":"β-Caryophyllene wrapped by nanoliposomes efficiently increases the control effect on Bemisia tabaci MED","authors":"","doi":"10.1016/j.pestbp.2024.106082","DOIUrl":"10.1016/j.pestbp.2024.106082","url":null,"abstract":"<div>Bemisia tabaci poses a severe threat to plants, and the control of B. tabaci mainly relies on pesticides, which causes more and more rapidly increasing resistance. β-Caryophyllene is a promising ingredient for agricultural pest control, but its feature of poor water solubility need to be improved in practical applications. Nanotechnology can enhance the effectiveness and dispersion of volatile organic compounds (VOCs). In this study, a nanoliposome carrier was constructed by ethanol injection and ultrasonic dispersion method, and β-caryophyllene was wrapped inside it, thus solving the defect of poor solubility of β-caryophyllene. The size of the β-caryophyllene nanoliposomes (C-BT-NPs) was around 200 nm, with the absolute value of the zeta potential exceeding 30 mV and a PDI below 0.5. The stability was also maintained over a 14-d storage period. C-BT-NPs showed effective insecticidal activity against B. tabaci, with an LC50 of 1.51 g/L, outperforming thiamethoxam and offering efficient agricultural pest control. Furthermore, C-BT-NPs had minimal short-term impact on the growth of tomato plants, indicating that they are safety on plants. Therefore, the VOCs using nanoliposome preparation technology show promise in reducing reliance on conventional pesticides and present new approaches to managing agricultural pests.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142083941","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

Inhibitory mechanism of 4-ethyl-1,2-dimethoxybenzene produced by Streptomyces albidoflavus strain ML27 against Colletotrichum gloeosporioides 白僵菌菌株 ML27 产生的 4-乙基-1,2-二甲氧基苯对球孢子菌的抑制机制

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-13 DOI: 10.1016/j.pestbp.2024.106086

{"title":"Inhibitory mechanism of 4-ethyl-1,2-dimethoxybenzene produced by Streptomyces albidoflavus strain ML27 against Colletotrichum gloeosporioides","authors":"","doi":"10.1016/j.pestbp.2024.106086","DOIUrl":"10.1016/j.pestbp.2024.106086","url":null,"abstract":"<div>Actinomycetes have emerged as significant biocontrol resources due to their rich array of bioactive natural products. While much research has historically focused on secondary metabolites isolated from their fermentation broth, there remains a dearth of reports on their volatile organic compounds (VOCs). Here, strain ML27, isolated from soil, was identified as Streptomyces albidoflavus based on morphological features, physiological, biochemical, and molecular characteristics (16S rRNA, atpD, recA, and rpoB gene sequences). VOCs from S. albidoflavus strain ML27 were effectively captured using solid-phase microextraction (SPME) and tentatively identified through gas chromatography–mass spectrometry (GC/MS). Among these compounds, 4-ethyl-1,2-dimethoxybenzene exhibited broad-spectrum antifungal activity and demonstrated efficacy in controlling citrus anthracnose, with a control efficacy of 86.67%. Furthermore, the inhibitory mechanism of 4-ethyl-1,2-dimethoxybenzene against Colletotrichum gloeosporioides was revealed. Results indicated that 4-ethyl-1,2-dimethoxybenzene induced swelling, deformity, and breakage in C. gloeosporioides mycelia, and significantly inhibited spore germination. Transcriptome analysis revealed that 4-ethyl-1,2-dimethoxybenzene inhibited the growth and development of C. gloeosporioides primarily by disrupting energy metabolism and the integrity of the cell wall and membrane. Based on these results, it is promising to develop 4-ethyl-1,2-dimethoxybenzene as a novel biopesticide for controlling citrus anthracnose.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141990347","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

Plant-derived citronellol can significantly disrupt cell wall integrity maintenance of Colletotrichum camelliae 植物提取的香茅醇能极大地破坏山茶科 Colletotrichum camelliae 细胞壁完整性的维持

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-13 DOI: 10.1016/j.pestbp.2024.106087

{"title":"Plant-derived citronellol can significantly disrupt cell wall integrity maintenance of Colletotrichum camelliae","authors":"","doi":"10.1016/j.pestbp.2024.106087","DOIUrl":"10.1016/j.pestbp.2024.106087","url":null,"abstract":"<div>Anthracnose, a fungal disease, commonly infects tea plants and severely impacts the yield and quality of tea. One method for controlling anthracnose is the application of citronellol, a plant extract that exhibits broad-spectrum antimicrobial activity. Herein, the physiological and biochemical mechanism by which citronellol controls anthracnose caused by Colletotrichum camelliae was investigated. Citronellol exhibited excellent antifungal activity based on direct and indirect mycelial growth inhibition assays, with EC50 values of 76.88 mg/L and 29.79 μL/L air, respectively. Citronellol also exhibited good control effects on C. camelliae in semi-isolated leaf experiments. Optical and scanning electron microscopy revealed that citronellol caused C. camelliae mycelia to thin, fracture, fold and deform. Transmission electron microscopy revealed that the mycelial cell walls collapsed inward and separated, and the organelles became blurred after treatment with citronellol. The sensitivity of C. camelliae to calcofluor white staining was significantly enhanced by citronellol, while PI staining showed minimal fluorescence, and the relative conductivity of mycelia were not significantly different. Under citronellol treatment, the expression levels of β-1,3-glucanase, chitin synthase, and chitin deacetylase-related genes were significantly decreased, while the expression levels of chitinase genes were increased, leading to lower chitinase activity and increased β-1,3-glucanase activity. Therefore, citronellol disrupted the cell wall integrity of C. camelliae and inhibited normal mycelial growth.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021059","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

Activity of OSBPI fungicide fluoxapiprolin against plant-pathogenic oomycetes and its systemic translocation in plants OSBPI 杀菌剂氟唑菌酰胺对植物致病性卵菌的活性及其在植物体内的系统迁移

IF 4.2 1区农林科学

Pesticide Biochemistry and Physiology Pub Date : 2024-08-13 DOI: 10.1016/j.pestbp.2024.106085

{"title":"Activity of OSBPI fungicide fluoxapiprolin against plant-pathogenic oomycetes and its systemic translocation in plants","authors":"","doi":"10.1016/j.pestbp.2024.106085","DOIUrl":"10.1016/j.pestbp.2024.106085","url":null,"abstract":"<div>Fluoxapiprolin, a novel piperidinyl thiazole isoxazoline fungicide, was developed by Bayer Crop Science in 2012. Despite its well-documented inhibitory activity against plant pathogenic oomycetes such as Phytophthora capsici and Phytophthora infestans, limited information regarding its antifungal spectrum and protective and curative activity is available. Fluoxapiprolin exhibited strong inhibitory activity against Phytophthora spp. and several Pythium spp., with EC50 values ranging from 2.12 × 10−4 to 2.92 μg/mL. It was much more effective against P. capsici in inhibiting mycelial growth, sporangium production, and cystospore germination than at reducing zoospore release. Moreover, fluoxapiprolin displayed both protective and curative activity against P. capsici infection in pepper plants under greenhouse conditions, with systemic translocation capability confirmed by High Performance Liquid Chromatography (HPLC) analysis. The results demonstrated the strong inhibitory activity of fluoxapiprolin against economically important plant oomycete pathogens, including Phytophthora spp. and several Pythium spp., and its certain translocation activity in pepper plants.</div>","PeriodicalId":19828,"journal":{"name":"Pesticide Biochemistry and Physiology","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076663","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