Journal of Pesticide Science最新文献

{"title":"Structural insights into the interaction between gabazine (SR-95531) and <i>Laodelphax striatellus</i> GABA receptors.","authors":"Yuki Fujie,&nbsp;Genyan Liu,&nbsp;Fumiyo Ozoe,&nbsp;Yoshihisa Ozoe","doi":"10.1584/jpestics.D22-007","DOIUrl":"https://doi.org/10.1584/jpestics.D22-007","url":null,"abstract":"<p><p>γ-Aminobutyric acid receptors (GABARs) mediate fast inhibitory neurotransmission and are targets for insecticides. GABARs are composed of five subunits, the composition of which dictates the pharmacological characteristics of GABARs. Both competitive and noncompetitive GABAR antagonists can be used as insecticides. Gabazine is a potent competitive antagonist of mammalian α1β2γ2 GABARs; however, it is less potent against insect GABARs. To explore how gabazine interacts with GABARs, we examined whether the sensitivity of the small brown planthopper (<i>Laodelphax striatellus</i>) RDL GABAR (LsRDLR) to gabazine is increased when its amino acid residues are substituted with α1β2γ2 GABAR residues. In the results, two of the generated mutants showed enhanced gabazine sensitivity. Docking simulations of gabazine using LsRDLR homology models and an α1β2γ2 GABAR cryo-EM structure revealed that the accommodation of gabazine into the \"aromatic box\" in the orthosteric site lowered the binding energy. This information may help in designing GABAR-targeting insecticides with novel modes of action.</p>","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 2","pages":"78-85"},"PeriodicalIF":2.4,"publicationDate":"2022-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/50/d2/jps-47-2-D22-007.PMC9184248.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40580381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Permeability of the fish intestinal membrane to bulky chemicals.","authors":"Chiyoko Miyata, Yoshihide Matoba, Makiko Mukumoto, Yoshiaki Nakagawa, Hisashi Miyagawa","doi":"10.1584/jpestics.D21-055","DOIUrl":"10.1584/jpestics.D21-055","url":null,"abstract":"<p><p>The ability to predict the environmental behavior of chemicals precisely is important for realizing more rational regulation. In this study, the bioaccumulation of nine chemicals of different molecular weights absorbed <i>via</i> the intestinal tract was evaluated in fish using the everted gut sac method. The amounts of chemicals that passed through the intestinal membrane after a 24-hr exposure were significantly decreased for chemicals with MW≥548 and D_{max min}≥15.8 Å (or D_{max aver}≥17.2 Å). These thresholds are consistent with those previously proposed in terms of MW (>800) and molecular size (D_{max min}>15.6 Å or D_{max aver}>17.1 Å) for the limit of permeable chemicals through the gill membrane. The results show that the same MW and D_max criteria can be used to predict low bioaccumulation through both the gill membrane and the intestinal tract. These findings are helpful in reducing the need to conduct animal tests in environmental safety studies.</p>","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 2","pages":"86-92"},"PeriodicalIF":1.5,"publicationDate":"2022-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c4/11/jps-47-2-D21-055.PMC9184245.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40580382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Effects of temperature and humidity on the contact angle of pesticide droplets on rice leaf surfaces.","authors":"Jiantao Zhang,&nbsp;Tengyuan Zhou,&nbsp;Jiajun Zeng,&nbsp;Xuanchun Yin,&nbsp;Yubin Lan,&nbsp;Sheng Wen","doi":"10.1584/jpestics.D21-068","DOIUrl":"https://doi.org/10.1584/jpestics.D21-068","url":null,"abstract":"<p><p>The effects of external factors such as temperature, humidity, pesticide formulation, and pesticide concentration on the contact angle of pesticide droplets on rice leaf surfaces were analyzed. The experiments showed that there were significant differences in the contact angles of droplets on the leaf surfaces under different temperatures and humidity. As the ambient temperature increased, the contact angle first decreased and then increased, reaching a minimum value at 25°C. With a gradual increase in humidity, the contact angle significantly increased and reached a maximum at 100% humidity. Finally, it was concluded that both the formulation and concentration of the pesticide had a significant effect on the contact angle of droplets on rice leaf surfaces. The experiments also illustrated that the effects of the pesticide formulation and concentration on the contact angle were more significant than those of temperature and humidity.</p>","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 2","pages":"59-68"},"PeriodicalIF":2.4,"publicationDate":"2022-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c1/b1/jps-47-2-D21-068.PMC9184250.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40580383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Mortality of <i>Orius insidiosus</i> by contact with spinosad in the laboratory as well as in the field and a perspective of these as controllers of <i>Frankliniella occidentalis</i>.","authors":"Samuel Cruz-Esteban,&nbsp;Irais Brito-Bonifacio,&nbsp;David Estrada-Valencia,&nbsp;Edith Garay-Serrano","doi":"10.1584/jpestics.D22-012","DOIUrl":"https://doi.org/10.1584/jpestics.D22-012","url":null,"abstract":"<p><p><i>Orius insidiosus</i>, known as the pirate bug, is widely distributed throughout the Americas. It is employed for the biological control of <i>Frankliniella occidentalis</i> in organic berry crops in Mexico. In conventional crops, spinosad is the main control method for this pest. The LD₅₀ of spinosad on <i>O. insidiosus</i> was determined. In addition, we monitored the population density of <i>F. occidentalis</i> in blackberry crops under two types of management (biochemical+mass trapping, and biological control). The LD₅₀ was 225.65 ppm 3.8 times greater than the 60 ppm dose commonly used in blackberry crops. Both types of control are efficient; however, spinosad is less effective and should be combined with other environmentally friendly strategies. The possibility of combining chromatic traps+spinosad application and chromatic traps+strategic release of <i>O. insidiosus</i> to effectively control thrips without compromising fruit quality is discussed.</p>","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 2","pages":"93-99"},"PeriodicalIF":2.4,"publicationDate":"2022-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/58/eb/jps-47-2-D22-012.PMC9184249.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40580380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Studies on the inhibition of methanogenesis and dechlorination by (4-hydroxyphenyl) chloromethanesulfonate.","authors":"Yudai Hotta, Chizu Yagoshi, Ryo Okazaki, Mitsumasa Ikeda","doi":"10.1584/jpestics.D21-071","DOIUrl":"10.1584/jpestics.D21-071","url":null,"abstract":"<p><p>The purpose of this study was to demonstrate the inhibitory effect of chemicals on methane emissions in paddy soil. We found that (4-hydroxyphenyl) chloromethanesulfonate (C-1) has a methanogenic inhibition activity, and we studied its inhibition mechanism using laboratory tests. The study found that C-1 treatment of flooded soil did not significantly affect the bacterial community but rather the archaeal community; particularly, <i>Methanosarcina</i> spp. C-1 strongly inhibited the aceticlastic methanogenesis route. It was suggested that the inhibitory target of C-1 was different from the well-known methanogenic inhibitor 2-bromoethanesulfonate, which targets methyl-coenzyme M reductase of methanogen. In addition, C-1 had a secondary effect of inhibiting the dechlorination of chlorophenols. Although field trials are required as the next development step, C-1 can be used to reduce methane emissions from paddy fields, one of the largest sources in the agricultural sector.</p>","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 2","pages":"69-77"},"PeriodicalIF":1.5,"publicationDate":"2022-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/5e/73/jps-47-2-D21-071.PMC9184246.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40491929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Engineering of <i>Bacillus thuringiensis</i> insecticidal proteins.","authors":"Takashi Yamamoto","doi":"10.1584/jpestics.D22-016","DOIUrl":"https://doi.org/10.1584/jpestics.D22-016","url":null,"abstract":"<p><p><i>Bacillus thuringiensis</i> (Bt) has been used as sprayable pesticides for many decades. Bt strains utilized in these products produce multiple insecticidal proteins to complement a narrow insect specificity of each protein. In the late 1990s, genes encoding Bt insecticidal proteins were expressed in crop plants such as cotton and corn to protect these crops from insect damage. The first Bt protein used in transgenic cotton was Cry1Ac to control <i>Heliothis virescens</i> (tobacco budworm). Cry1Ab was applied to corn to control <i>Ostrinia nubilalis</i> (European corn borer). Since these insects have developed resistance to Cry1Ac and Cry1Ab, new Bt proteins are required to overcome the resistance. In order to protect corn furthermore, it is desired to control <i>Diabrotica virgifera</i> (Western corn rootworm), <i>Helicoverpa zea</i> (corn earworm) and <i>Spodoptera frugiperda</i> (fall armyworm). Recently, many new Bt insecticidal proteins have been discovered, but most of them require protein engineering to meet the high activity standard for commercialization. The engineering process for higher activity necessary for Bt crops is called optimization. The seed industry has been optimizing Bt insecticidal proteins to improve their insecticidal activity. In this review, several optimization projects, which have led to substantial activity increases of Bt insecticidal proteins, are described.</p>","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 2","pages":"47-58"},"PeriodicalIF":2.4,"publicationDate":"2022-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/4b/15/jps-47-2-D22-016.PMC9184247.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40580379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Therapeutic role of uterine-derived stem cells in acute kidney injury.","authors":"Ramanaiah Mamillapalli, SiHyun Cho, Levent Mutlu, Hugh S Taylor","doi":"10.1186/s13287-022-02789-0","DOIUrl":"10.1186/s13287-022-02789-0","url":null,"abstract":"<p><strong>Background: </strong>Acute kidney injury (AKI) causes abrupt deterioration in kidney function that disrupts metabolic, electrolyte and fluid homeostasis. Although the prevalence of AKI is steadily increasing, no definitive treatment options are available, leading to severe morbidity and mortality. We evaluated the role of uterine-derived multipotent stem cells in kidney regeneration after ischemic AKI.</p><p><strong>Methods: </strong>Female C57BL/6J mice were hysterectomized and subsequently subject to AKI by either unilateral or bilateral renal ischemia-reperfusion injury. Uterine-derived cells (UDCs), containing a population of uterine stem cells, were isolated from the uteri of female transgenic DsRed mice and injected intravenously to AKI mice. Engraftment of DsRed cells was analyzed by flow cytometry while serum creatinine levels were determined colorimetrically. Expression of UDC markers and cytokine markers were analyzed by immunohistochemical and qRT-PCR methods, respectively. The Kaplan-Meier method was used to analyze survival time while unpaired t test with Welch's correction used for data analysis between two groups.</p><p><strong>Results: </strong>Mice with an intact uterus, and hence an endogenous source of UDCs, had a higher survival rate after bilateral ischemic AKI compared to hysterectomized mice. Mice treated with infusion of exogenous UDCs after hysterectomy/AKI had lower serum creatinine levels and higher survival rates compared to controls that did not receive UDCs. Engraftment of labeled UDCs was significantly higher in kidneys of bilateral ischemic AKI mice compared to those that underwent a sham surgery. When unilateral ischemic AKI was induced, higher numbers of UDCs were found in the injured than non-injured kidney. Immunofluorescence staining demonstrated double-positive DsRed/Lotus tetragonolobus agglutinin (LTA) positive cells and DsRed/CD31 positive cells indicating contribution of UDCs in renal tubular and vascular regeneration. Expression of Cxcl12, Bmp2, Bmp4, and Ctnf in renal tissue was significantly higher in the UDCs injection group than the control group.</p><p><strong>Conclusions: </strong>UDCs engrafted injured kidneys, contributed to proximal tubule and vascular regeneration, improved kidney function and increased survival in AKI mice. UDC administration is a promising new therapy for AKI. Endogenous uterine stem cells likely also preserve kidney function, suggesting a novel interaction between the uterus and kidney. We suggest that hysterectomy may have a detrimental effect on response to renal injury.</p>","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"23 1","pages":"107"},"PeriodicalIF":2.7,"publicationDate":"2022-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8917641/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89802099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Temporal and regional variability of cumulative ecological risks of pesticides in Japanese river waters for 1990–2010","authors":"T. Nagai, Shunji Yachi, K. Inao","doi":"10.1584/jpestics.d21-054","DOIUrl":"https://doi.org/10.1584/jpestics.d21-054","url":null,"abstract":"We quantitatively evaluated the cumulative ecological risks from multiple pesticides used in paddy fields in Japan. Moreover, we visualized the temporal and regional variability of those risks for 1990–2010. Considering the region-specific parameters of environmental conditions, region-specific predicted environmental concentrations were estimated at 350 river-flow monitoring sites in Japan. Then the multi-substance potentially affected fraction (msPAF) was calculated as a risk index of multiple pesticides by using the computation tool NIAES-CERAP. The median msPAF values for insecticides and herbicides decreased by 92.4% and 53.1%, respectively, from 1990 to 2010. This substantial reduction in ecological risk was attributed to the development of low-risk pesticides by manufacturers, the efforts of farmers in risk reduction, and tighter regulation by the Japanese government. In particular, the substantial reduction of the ecological risk from insecticides was largely due to the decrease in the use of organophosphorus insecticides.","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 1","pages":"22 - 29"},"PeriodicalIF":2.4,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43329865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insect growth regulators with hydrazide moiety inhibit strigolactone biosynthesis in rice","authors":"Kojiro Kawada, Yasuyuki Sasaki, T. Asami, S. Yajima, S. Ito","doi":"10.1584/jpestics.D21-063","DOIUrl":"https://doi.org/10.1584/jpestics.D21-063","url":null,"abstract":"Strigolactones (SLs) are carotenoid-derived plant hormones involved in several growth and developmental processes. Also, SLs are allelochemicals that induce the seed germination of root parasitic plants and the hyphal branching of arbuscular mycorrhizal fungi. In this study, to identify novel lead chemicals that inhibit SL biosynthesis, we evaluated the effect of agrochemicals on SL biosynthesis. We found that the diacylhydrazine insect growth regulator, chromafenozide, reduced the endogenous level of 4-deoxyorobanchol (4DO), a major SL in rice. Furthermore, treatment with the same class of insect growth regulator, methoxyfenozide, also resulted in the reduction of 4DO levels in rice root exudates. These results suggest that chromafenozide and methoxyfenozide are novel lead inhibitors of SL biosynthesis.","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 1","pages":"43 - 46"},"PeriodicalIF":2.4,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47582515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and antifungal activity of the proposed structure of a volatile compound isolated from the edible mushroom Hypsizygus marmoreus","authors":"Nguyen Thi Ngoc Anh, Daisuke Miyaji, Kumiko Osaki-Oka, Tatsuo Saito, A. Ishihara, A. Yajima","doi":"10.1584/jpestics.D21-061","DOIUrl":"https://doi.org/10.1584/jpestics.D21-061","url":null,"abstract":"We synthesized the proposed structure of an antifungal compound detected in the culture broth of the edible mushroom Hypsizygus marmoreus. Using the Evans aldol and Abiko–Masamune aldol reactions as the key steps, we synthesized all of the stereoisomers of the compound with high stereoselectivity. The GC retention times and the fragmentation patterns in the mass spectra of the synthesized isomers did not match those of the natural product. Therefore, this result may imply that it is necessary to reisolate the natural product and reconsider its structure. All of the synthesized isomers were found to exhibit antifungal activity against the phytopathogenic fungus Alternaria brassicicola. Due to their simple structures, the obtained isomers could be lead compounds for new pesticides.","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"47 1","pages":"17 - 21"},"PeriodicalIF":2.4,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48956579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}