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Zeitschriftenartikel zum Thema „Pesticidal activities“

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Veröffentlicht am 18. Mai 2024

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1

Ali, M. M., M. Jesmin, S. M. A. Salam, J. A. Khanam, M. F. Islam und M. N. Islam. „Pesticidal Activities of Some Schiff Bases Derived from Benzoin, Salicylaldehyde, Aminophenol and 2,4 Dinitrophenyl Hydrazine“. Journal of Scientific Research 1, Nr. 3 (29.08.2009): 641–46. http://dx.doi.org/10.3329/jsr.v1i3.2585.

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The pesticidal activities of three Schiff bases namely PDH [N- (1 phenyl 2 hydroxy 2 phenyl ethylidine) 2¢4¢ dinitrophenyl hydrazine], PHP [N(1-phenyl 2 hydroxy -2 phenyl ethylidine) 2¢ hydroxy phenyl imine] and HHP [N (2-hydroxy benzylidine) 2¢ hydroxy phenyl imine] derived from benzoin, salicylaldehyde, 2 aminophenol and 2,4 dinitrophenyl hydrazine were evaluated against Tribolium castaneum. Probit mortality were studied by surface film treatment method at different doses of the compounds. The results showed that the LD50 values as recorded after 24 hours of treatment were 15.1268, 3.0922 and 3.0922 mg /cm2 for PDH, PHP and HHP, respectively as compared with 0.2416 mg/cm2 for a standard pesticide l-cyhalothrin. With Schiff base complexes of cobalt(II), copper(II) and zinc(II), the LD50 values were 1.5206, 14.8576 and 3.2829 mg/cm2 respectively. Better results were obtained when recorded with longer treatment time. These three compounds may, therefore, be considered as potent pesticides. Keywords: Pesticidal activities; Schiff bases; Surface film treatment method. © 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245(Online). All rights reserved. DOI: 10.3329/jsr.v1i3.2585 J. Sci. Res. 1 (3), 641-646 (2009)

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2

Park, Eun Sil, In Kyung Bae, Hwang Ju Jeon und Sung-Eun Lee. „Limonoid derivatives and its pesticidal activities“. Entomological Research 44, Nr. 4 (Juli 2014): 158–62. http://dx.doi.org/10.1111/1748-5967.12059.

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3

Badawy, Mohamed E. I., Anter Kenawy und Ahmed F. El-Aswad. „Toxicity Assessment of Buprofezin, Lufenuron, and Triflumuron to the EarthwormAporrectodea caliginosa“. International Journal of Zoology 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/174523.

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Earthworms are particularly important soil macroinvertebrates and are often used in assessing the general impact of pesticide pollution in soil. The present study was conducted in order to investigate the toxicity of three insect growth regulators (IGRs) buprofezin, lufenuron, and triflumuron, at different application rates and exposure times toward mature earthwormsAporrectodea caliginosa. The effects of these pesticides on the growth rate in relation to the activities of acetylcholinesterase (AChE) and glutathione S-transferase (GST) as biochemical indicators were evaluated to elucidate the mechanisms of action. Toxicity studies indicated that lufenuron was the most harmful pesticide to mature earthworms, followed in descending order by buprofezin and triflumuron. A reduction in growth rate in all pesticide-treated worms was dose-dependent over the 28-day exposure period, which was accompanied by a decrease in AChE and GST activities. Relationships between growth rate, AChE, and GST provided strong evidence for the involvement of pesticidal contamination in the biochemical changes in earthworms, which can be used as a bioindicator of soil contamination by pesticides.

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4

Liu, Xing-Hai, Wei Yu, Li-Jing Min, David E. Wedge, Cheng-Xia Tan, Jian-Quan Weng, Hong-Ke Wu et al. „Synthesis and Pesticidal Activities of New Quinoxalines“. Journal of Agricultural and Food Chemistry 68, Nr. 28 (12.06.2020): 7324–32. http://dx.doi.org/10.1021/acs.jafc.0c01042.

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5

KOYANAGI, Tohru, Hiroshi OKADA, Osamu IMAI, Tadaaki TOKI und Takahiro HAGA. „Synthesis and Pesticidal Activities of N-Phosphinoyl Heterocycles“. Journal of Pesticide Science 22, Nr. 3 (1997): 187–92. http://dx.doi.org/10.1584/jpestics.22.187.

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6

Xu, Jianwei, Min Lv, Shanshan Fang, Yanyan Wang, Houpeng Wen, Shaoyong Zhang und Hui Xu. „Exploration of Synergistic Pesticidal Activities, Control Effects and Toxicology Study of a Monoterpene Essential Oil with Two Natural Alkaloids“. Toxins 15, Nr. 4 (25.03.2023): 240. http://dx.doi.org/10.3390/toxins15040240.

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With the increasing development of pest resistances, it is not easy to achieve satisfactory control effects by using only one agrochemical. Additionally, although the alkaloid matrine (MT) isolated from Sophora flavescens is now utilized as a botanical pesticide in China, in fact, its pesticidal activities are much lower in magnitude than those of commercially agrochemicals. To improve its pesticidal activities, here, the joint pesticidal effects of MT with another alkaloid oxymatrine (OMT) (isolated from S. flavescens) and the monoterpene essential oil 1,8-cineole (CN) (isolated from the eucalyptus leaves) were investigated in the laboratory and greenhouse conditions. Moreover, their toxicological properties were also studied. Against Plutella xylostella, when the mass ratio of MT and OMT was 8/2, good larvicidal activity was obtained; against Tetranychus urticae, when the mass ratio of MT and OMT was 3/7, good acaricidal activity was obtained. Especially when MT and OMT were combined with CN, the significant synergistic effects were observed: against P. xylostella, the co-toxicity coefficient (CTC) of MT/OMT (8/2)/CN was 213; against T. urticae, the CTC of MT/OMT (3/7)/CN was 252. Moreover, the activity changes over time of two detoxification enzymes, carboxylesterase (CarE) and glutathione S-transferase (GST) of P. xylostella treated with MT/OMT (8/2)/CN, were observed. In addition, by scanning electron microscope (SEM), the toxicological study suggested that the acaricidal activity of MT/OMT (3/7)/CN may be related to the damage of the cuticle layer crest of T. urticae.

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7

Yadav, Shailendra, Sushma Singh und Chitrasen Gupta. „A CONCISE OVERVIEW ON HETEROCYCLIC COMPOUNDS EXHIBITING PESTICIDAL ACTIVITIES“. International Journal of Advanced Research 9, Nr. 08 (31.08.2021): 989–1004. http://dx.doi.org/10.21474/ijar01/13352.

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Heterocyclic compounds are numerous and diverse group of organic compounds. Heterocycles are abundantly found in nature and express various physiological properties. Heterocycles are intricately linked to all aspects of life. There are many heterocyclic compounds currently known, and the number is constantly rising owing to extensive synthetic development and their applications. Heterocyclic compounds are used significantly in a number of areas, including biochemistry and medicinal chemistry, and some others. They are predominantly synthesized in agrochemical and pharmaceutical industries due to their potential biological activities. This review article focuses on recently synthesized heterocyclic compounds and their different pesticidal activities such as antifungal, antibacterial, antiviral, nematocidal, insecticidal, acaricidal, and herbicidal.

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8

Gupta, Anil K. Sen, Tapas Bhattacharya, Kanchan Hajela, Kripa Shankar und Shakeel Ahmad. „Synthesis and pesticidal activities of some substituted 1,2,4-triazines“. Pesticide Science 16, Nr. 1 (Februar 1985): 65–72. http://dx.doi.org/10.1002/ps.2780160109.

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9

Jahan, Nazish, Nida Hussain, Syeeda Iram Touqeer, Khalil-Ur-Rahman Khalil-Ur-Rahman, Huma Shamshad und Naseem Abbas. „Formulation of Mentha piperita-Based Nanobiopesticides and Assessment of the Pesticidal and Antimicrobial Potential“. Life 14, Nr. 1 (19.01.2024): 144. http://dx.doi.org/10.3390/life14010144.

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The excessive use of synthetic pesticides has detrimental impacts on humans, non-target organisms, and the environment. Insect pest management strategies are shifting toward biopesticides, which can provide a feasible and environmentally friendly green solution to the pest problem. The key objective of the present research work was the preparation of Mentha piperita-based nanobiopesticides with enhanced stability, solubility, and pesticidal potential. Nanobiopesticides based on the Mentha piperita extract were prepared using the antisolvent precipitation method. The central composite design of response surface methodology (RSM) was utilized to optimize different process parameters, e.g., the amounts of the stabilizer and plant extract. The nanosuspension of Mentha piperita prepared with the stabilizer SLS showed a particle size of 259 nm and a polydispersity index of 0.61. The formulated biopesticides in the form of nanosuspensions showed good antibacterial activities as compared to the Mentha piperita extract against two phytopathogenic bacterial strains, Clavibacter michiganensis and Pseudomonas syringae. The M. piperita nanosuspension had higher antifungal efficacy against A. niger and F. oxysporum than the Mentha piperita extract. The M. piperita extract and its nanosuspensions were tested for pesticidal activity against the stored-grain insects Tribolium castaneum and Sitophilus oryzae. Mentha piperita-based nanobiopesticides demonstrated significantly high (p < 0.05) average mortality of 84.4% and 77.7% against Tribolium castaneum and Sitophilus oryzae, respectively. Mentha piperita-based nanobiopesticides showed enhanced pesticidal potential and could be used as a good alternative to synthetic chemical pesticides.

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10

Nagarkoti, Kirti, Om Prakash, Avneesh Rawat, Tanuja Kabdal, Ravendra Kumar, Ravi Mohan Srivastava, Satya Kumar und Dharmendra Singh Rawat. „Chemo-profiling of methanolic and ether oleoresins of Salvia coccinea and in vitro pesticidal evaluation with in silico molecular docking and ADME/Tox studies“. European Journal of Chemistry 14, Nr. 2 (30.06.2023): 211–22. http://dx.doi.org/10.5155/eurjchem.14.2.211-222.2416.

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The objective of the present study was to examine the chemical compositions of Salvia coccinea oleoresins prepared in methanol and petroleum ether. GC-MS analysis of Salvia coccinea methanolic oleoresin (SCMO) and Salvia coccinea ether oleoresin (SCEO) resulted in the identification of 15 and 12 constituents, comprising 84.7 and 81.2% of the total composition, respectively. Both SCMO and SCEO varied in their chemical composition in terms of quantity, namely, oleic acid (22.3-25.9%), palmitic acid (8.9-8.4%), stigmasta-3,5-dien-7-one (3.4-11.8%), stigmasterol acetate (3.5-5.3%), neophytadiene (4.8-1.7%), phytol (1.6-7.8%) and phthalic acid (2.1-3.1%). In addition to the qualitative differences between SCMO and SCEO concomitantly, both oleoresins were examined for their pesticidal activities. Oleoresins demonstrated significant nematicidal activity against Meloidogyne incognita, insecticidal activity against Lipaphis erysimi, antifungal activity against Curvularia lunata, and antibacterial activity against Staphylococcus aureus. For nematicidal activity, SCMO and SCEO exhibited a high mortality of 65.66±1.69 and 54.33±1.24 and egg hatching inhibition of 26.33±1.20and 33.33±1.24 at 200 μg/mL. Similarly, SCMO and SCEO exhibited excellent insecticidal activity with 94.87±1.44 % and 86.75±1.85 % mortality at 1000 μg/mL. However, both oleoresins exhibited moderate antifungal and antibacterial activities compared to standards. Due to the quantitative difference in chemical composition and the presence of several phytoconstituents that were absent in SCEO, SCMO displayed stronger pesticidal effects than SCEO. To estimate the binding energy and structure-activity relationships between chemical constituents and pesticidal activities, in silico molecular docking and ADME/Tox studies have also been performed using a web-based online tool. On the basis of the present study, it is inferred that the herb Salvia coccinea might be a good source of phytochemicals and can be used for the development of herbal-based pesticides/formulations after proper clinical trials.

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11

Lu, Rongfei, Jianwei Xu, Hailong Wang, Zhen Wang, Shaoyong Zhang, Hui Xu und Min Lv. „Semisynthesis and Pesticidal Activities of Novel Cholesterol Ester Derivatives Containing Cinnamic Acid-Like Fragments“. Molecules 27, Nr. 23 (02.12.2022): 8437. http://dx.doi.org/10.3390/molecules27238437.

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Due to the extensive use of agrochemicals resulting in the emergence of pesticide resistance and ecological environment problems, the research and development of new alternatives for crop protection is highly desirable. In order to discover potent natural product-based insecticide candidates, a series of new cholesterol ester derivatives containing cinnamic acid-like fragments at the C-7 position were synthesized. Some derivatives showed potent pesticidal activities. Against Mythimna separata Walker, compounds 2a, Id, Ig, and IIg showed 2.1–2.4-fold growth-inhibitory activity of the precursor cholesterol. Against Plutella xylostella Linnaeus, compounds Ig, IIf, and IIi exhibited 1.9–2.1-fold insecticidal activity of cholesterol. These results will pave the way for the future synthesis of cholesterol-based derivatives as agrochemicals.

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12

Han, Jin, Shaoyong Zhang, Jun He und Tianze Li. „Piperine: Chemistry and Biology“. Toxins 15, Nr. 12 (12.12.2023): 696. http://dx.doi.org/10.3390/toxins15120696.

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Piperine is a plant-derived promising piperamide candidate isolated from the black pepper (Piper nigrum L.). In the last few years, this natural botanical product and its derivatives have aroused much attention for their comprehensive biological activities, including not only medical but also agricultural bioactivities. In order to achieve sustainable development and improve survival conditions, looking for environmentally friendly pesticides with low toxicity and residue is an extremely urgent challenge. Fortunately, plant-derived pesticides are rising like a shining star, guiding us in the direction of development in pesticidal research. In the present review, the recent progress in the biological activities, mechanisms of action, and structural modifications of piperine and its derivatives from 2020 to 2023 are summarized. The structure-activity relationships were analyzed in order to pave the way for future development and utilization of piperine and its derivatives as potent drugs and pesticides for improving the local economic development.

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13

Bulugahapitiya, Vajira P., Fernando PTN und Jayasekara HD. „Anti-oxidant, pediculicidal and pesticidal activities of leaves of Rhinacanthus nasutus (Linn) grown in Sri Lanka“. Asian Journal of Medical and Biological Research 6, Nr. 4 (07.01.2021): 754–60. http://dx.doi.org/10.3329/ajmbr.v6i4.51243.

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Rhinacanthus nasutus is an ethnomedical plant used in the traditional system of medicine for treating skin diseases. As no adequate studies available on R. nasutus grown in Sri Lanka, this study aimed on exploring anti-oxidant, anti-parasitic and pesticidal activity of leaves of the plant. Antioxidant capacity of the crude extract of leaves was evaluated using DPPH free radical scavenging assay and FRAP assay using ascorbic acid and FeSO4.7H2O as the standards respectively. Pediculicidal efficacy was carried out against head lice using 0.0010% (w/v) methanolic, ethyl acetate and aqueous extracts of leaves by following modified filter paper diffusion bioassay. Pesticidal activity of leaves was evaluated using modified filter paper contact bioassay against mealybugs, P. marginatus, resides on papaw and guava trees. The IC50 value of DPPH assay was found to be 514.3 μgmL-1 and FRAP value was found to be 594.33±2.93 μmol Fe2+/g in anti-oxidant assay. The LT50 (median Lethal Time) values for 0.0010% (w/v) concentration of methanolic, ethyl acetate and aqueous extracts were 263, 347 and 676 min respectively in pediculicidal assay. LC50 (50% mortality) value was found to be 0.0011% (w/v) after 240 minutes whereas LT50 values of 0.0020% (w/v) of methanol, ethyl acetate and aqueous fractions of R. nasutus for adult were found as 31, 124 and 189 hours and for nymph were 14, 18 and 29 hours respectively in pesticidal assay. Accordingly, methanolic extract was effective in controlling nymph stage of mealybug life cycle than adults with the LC50 of 0.0015% (w/v) within 14 hours. This study confirmed promising pediculicidal and pesticidal activity and significant anti-oxidant capacity of leaves of R. nasutus. Asian J. Med. Biol. Res. December 2020, 6(4): 754-760

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14

Tanaka, Junji, Eiichi Kuwano und Morifusa Eto. „Synthesis and Pesticidal Activities of Phosphonate Analogs of Amino Acids“. Journal of the Faculty of Agriculture, Kyushu University 30, Nr. 4 (September 1986): 209–23. http://dx.doi.org/10.5109/23825.

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15

Wei, Yan, Kai-Long Miao und Shuang-Hong Hao. „Novel 4-Methylumbelliferone Amide Derivatives: Synthesis, Characterization and Pesticidal Activities“. Molecules 23, Nr. 1 (08.01.2018): 122. http://dx.doi.org/10.3390/molecules23010122.

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16

Gupta, A., DR Shah, NR Seth, S. Pandey und JS Yadav. „Annonaceous acetogenins: The unrevealed area for cytotoxic and pesticidal activities“. Systematic Reviews in Pharmacy 2, Nr. 2 (2011): 104. http://dx.doi.org/10.4103/0975-8453.86299.

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17

Alves, Giselly Batista, Marcelo Leite Dias, Eugenio Eduardo de Oliveira, Gil Rodrigues dos Santos, Bergmann Morais Ribeiro und Raimundo Wagner de Souza Aguiar. „Isolation, Genomic, and Proteomic Characterization of a Novel Neotropical Strain of Bacillus thuringiensis with Mosquitocidal Activities“. Processes 11, Nr. 5 (11.05.2023): 1455. http://dx.doi.org/10.3390/pr11051455.

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The combination of genomic and proteomic analyses is a useful tool for the study of novel Bacillus thuringiensis (Bt) strains, as these approaches allow the accurate identification of pesticidal proteins and virulence factors produced. Here, we isolated and evaluated the potential of a novel Neotropical Bt strain (TOD651) for controlling larvae of Aedes aegypti and Culex quinquefasciatus mosquitoes. Aiming for the full comprehension of the TOD651 larvicidal potential, we further evaluated the whole TOD651 genome and conducted the proteomic analysis of the TOD651 spore–crystal mixtures. Our results showed that Bt TOD651 similarly killed both A. aegypti (0.011 µg/mL) and C. quinquefasciatus (0.023 µg/mL) larvae, exhibiting similar potency to the commercial Bt strain. The genome sequence revealed that Bt TOD651 harbors cry11Aa3, cry10Aa4, cry4Aa4, cry4Ba5, cyt1Aa5, cyt1Ca1, cyt2Ba13, mpp60Aa3, and mpp60Ba3. The proteomic analysis revealed no expression of Mpp60Aa3, while all the other pesticidal proteins were expressed (Cry4Ba5 was more abundant than Cyt1Aa5). The expression of the Mppe showed the major proportions between proteases. The virulent factor neutral protease B and spore coat proteins were also expressed. The expression of relevant pesticidal proteins (e.g., Cry, Cyt, Mpp, and other pathogenic factors), whose actions can occur in a synergic relation, indicates that the biocontrol using Bt TOD651 may contribute to delaying the selection of resistant individuals.

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18

Dassanayake, Mackingsley Kushan, Chien Hwa Chong, Teng-Jin Khoo, Adam Figiel, Antoni Szumny und Chee Ming Choo. „Synergistic Field Crop Pest Management Properties of Plant-Derived Essential Oils in Combination with Synthetic Pesticides and Bioactive Molecules: A Review“. Foods 10, Nr. 9 (27.08.2021): 2016. http://dx.doi.org/10.3390/foods10092016.

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The management of insect pests and fungal diseases that cause damage to crops has become challenging due to the rise of pesticide and fungicide resistance. The recent developments in studies related to plant-derived essential oil products has led to the discovery of a range of phytochemicals with the potential to combat pesticide and fungicide resistance. This review paper summarizes and interprets the findings of experimental work based on plant-based essential oils in combination with existing pesticidal and fungicidal agents and novel bioactive natural and synthetic molecules against the insect pests and fungi responsible for the damage of crops. The insect mortality rate and fractional inhibitory concentration were used to evaluate the insecticidal and fungicidal activities of essential oil synergists against crop-associated pests. A number of studies have revealed that plant-derived essential oils are capable of enhancing the insect mortality rate and reducing the minimum inhibitory concentration of commercially available pesticides, fungicides and other bioactive molecules. Considering these facts, plant-derived essential oils represent a valuable and novel source of bioactive compounds with potent synergism to modulate crop-associated insect pests and phytopathogenic fungi.

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Üstüner, Tamer, Şaban Kordali, Ayşe Usanmaz Bozhüyük und Memiş Kesdek. „Investigation of Pesticidal Activities of Essential Oil of Eucalyptus camaldulensis Dehnh“. Records of Natural Products 12, Nr. 6 (30.06.2018): 557–68. http://dx.doi.org/10.25135/rnp.64.18.02.088.

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20

SANEMITSU, Yuzuru. „Syntheses and pesticidal activities of heterocyclic compounds containing nitrogen and sulfur.“ Journal of Synthetic Organic Chemistry, Japan 44, Nr. 10 (1986): 939–52. http://dx.doi.org/10.5059/yukigoseikyokaishi.44.939.

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21

Olotuah, O. F. „Laboratory Evaluation of Pesticidal Activities of Hyptis suaveolens in Pest Management“. International Journal of Agricultural Research 8, Nr. 2 (15.03.2013): 101–6. http://dx.doi.org/10.3923/ijar.2013.101.106.

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22

Setzer, William N., Nguyen Huy Hung, Do N. Dai, Prabodh Satyal, Le Thi Huong, Bui Thi Chinh, Thieu Anh Tai und Thi Vu Hien. „Investigation of Pesticidal Activities of Essential Oils Obtained from Vitex Species“. Records of Natural Products, Nr. 6 (17.07.2021): 1–6. http://dx.doi.org/10.25135/rnp.266.21.06.2108.

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23

Elango, Ganesh, Selvaraj Mohana Roopan, Kasinathan Irukatla Dhamodaran, Kuppusamy Elumalai, Naif Abdullah Al-Dhabi und Mariadhas Valan Arasu. „Spectroscopic investigation of biosynthesized nickel nanoparticles and its larvicidal, pesticidal activities“. Journal of Photochemistry and Photobiology B: Biology 162 (September 2016): 162–67. http://dx.doi.org/10.1016/j.jphotobiol.2016.06.045.

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24

Yang, Ruige, Ting Xu, Jiangping Fan, Qian Zhang, Ming Ding, Mengxing Huang, Li Deng, Yuchao Lu und Yong Guo. „Natural products-based pesticides: Design, synthesis and pesticidal activities of novel fraxinellone derivatives containing N -phenylpyrazole moiety“. Industrial Crops and Products 117 (Juli 2018): 50–57. http://dx.doi.org/10.1016/j.indcrop.2018.02.088.

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25

Meenakshi B. Bhattacharjee. „Biopesticides from algae and their potential for sustainable agriculture and environmental protection“. Open Access Research Journal of Biology and Pharmacy 6, Nr. 2 (30.11.2022): 029–34. http://dx.doi.org/10.53022/oarjbp.2022.6.2.0080.

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Agricultural crops have become more resistant to synthetic pesticides and pressure mounts regarding their effect on our health and the environment. When these compounds leach into the ground waters, they become direct sources of human health hazards. Also, agricultural runoffs can cause widespread damage to flora fauna and in general affect the food chain in an ecosystem. To combat these deleterious effects, the race is on to bring biopesticides to market that are safe, effective at scale, affordable and can ensure future food security. In this present scenario there is an urgent need to look for alternate sources of similar compounds to replace synthetic pesticides that are sustainable, ecofriendly, and easily available to be mass produced. In this effort microalgae may play a very significant role as they have the capacity to produce a wide array of bioactive compounds with pesticidal properties. As a part of their daily metabolic activities through different physiological pathways they are known to produce and release compounds with anti-bacterial, anti-fungal, anti-protozoal, pesticidal, insecticidal properties. Microalgae, especially the cyanobacteria have very fast growth rates and are potent sources of raw material for the generation of these compounds therefore considered significant while considering biopesticides to replace synthetic ones. This review explores the use of microalgae driven release of biochemicals and secondary metabolites produced by microalgae, or microalgal biomass, that can serve as future promising biopesticides to replace the agrochemicals used these days in agriculture.

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Hasan, Faruk, und Biswanath Sikdar. „Screening of antimicrobial, cytotoxic and pesticidal activities of Coccinia grandis (L.) voigt“. Journal of Microbiology, Biotechnology and Food Sciences 05, Nr. 06 (01.06.2016): 584–88. http://dx.doi.org/10.15414/jmbfs.2016.5.6.584-588.

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Li, Qin, Xiaobo Huang, Shaochen Li, Jingchun Ma, Min Lv und Hui Xu. „Semisynthesis of Esters of Fraxinellone C4/10-Oxime and Their Pesticidal Activities“. Journal of Agricultural and Food Chemistry 64, Nr. 27 (05.07.2016): 5472–78. http://dx.doi.org/10.1021/acs.jafc.6b01995.

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Joseph, Baby, S. Sujatha und M. V. Jeevitha. „SCREENING OF PESTICIDAL ACTIVITIES OF SOME MARINE SPONGE EXTRACTS AGAINST CHOSEN PESTS“. Journal of Biopesticides 03, Nr. 02 (01.12.2010): 495–98. http://dx.doi.org/10.57182/jbiopestic.3.2.495-498.

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ABSTRACT Marine sponges (Porifera) are one of the most productive marine organisms. Eighty per cent of sponges (ethanolic extracts) were found to have insecticidal activity against fifth instar larvae of Culex quinquefasciatus (Say.) (Diptera: Culicidae) and Achaea janata (Linn.) (Noctuidae: Lepidoptera) and Pericallia ricini (Fab.) (Lepidoptera: Arctidae). Of the twelve sponges, five of them like Clathria longitoxa (Hentschel) (Poecilosclerida: Microcionidae), Callyspongia diffusa (Ridley) (Haplosclerida: Callyspongiidae), Haliclona pigmentifera (Dendy), Sigmadocia carnosa (Dendy), (Haplosclerida: Chaliniidae), and Denrilla nigra (Dendy) (Dendroceratidae: Darwinellidae) showed significant insecticidal activity. This paper clearly elucidated that C. longitoxa and Callyspongia diffusa (Rid.) were found to be more active than the remaining tested sponges. Screened twelve sponges showed the inhibition of larval growth ranged between 9-70% on A. janata and 10- 96% on P. ricini respectively. From the results, we conclude that secondary metabolites of sponges were found to be an effective biopesticides against lepidopteran pests and larvae of C. quinquefasciatus.

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Huras, Bogumiła, Jerzy Zakrzewski, Krzysztof Żelechowski, Anna Kiełczewska, Maria Krawczyk, Jarosław Hupko und Katarzyna Jaszczuk. „Fluorine analogs of dicamba and tricamba herbicides; synthesis and their pesticidal activity“. Zeitschrift für Naturforschung B 76, Nr. 3-4 (18.02.2021): 181–92. http://dx.doi.org/10.1515/znb-2020-0179.

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Crickmore, N., D. R. Zeigler, J. Feitelson, E. Schnepf, J. Van Rie, D. Lereclus, J. Baum und D. H. Dean. „Revision of the Nomenclature for the Bacillus thuringiensis Pesticidal Crystal Proteins“. Microbiology and Molecular Biology Reviews 62, Nr. 3 (01.09.1998): 807–13. http://dx.doi.org/10.1128/mmbr.62.3.807-813.1998.

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SUMMARY The crystal proteins of Bacillus thuringiensis have been extensively studied because of their pesticidal properties and their high natural levels of production. The increasingly rapid characterization of new crystal protein genes, triggered by an effort to discover proteins with new pesticidal properties, has resulted in a variety of sequences and activities that no longer fit the original nomenclature system proposed in 1989. Bacillus thuringiensis pesticidal crystal protein (Cry and Cyt) nomenclature was initially based on insecticidal activity for the primary ranking criterion. Many exceptions to this systematic arrangement have become apparent, however, making the nomenclature system inconsistent. Additionally, the original nomenclature, with four activity-based primary ranks for 13 genes, did not anticipate the current 73 holotype sequences that form many more than the original four subgroups. A new nomenclature, based on hierarchical clustering using amino acid sequence identity, is proposed. Roman numerals have been exchanged for Arabic numerals in the primary rank (e.g., Cry1Aa) to better accommodate the large number of expected new sequences. In this proposal, 133 crystal proteins comprising 24 primary ranks are systematically arranged.

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Fais, Antonella, Giovanna Lucia Delogu, Sonia Floris, Benedetta Era, Rosaria Medda und Francesca Pintus. „Euphorbia characias: Phytochemistry and Biological Activities“. Plants 10, Nr. 7 (17.07.2021): 1468. http://dx.doi.org/10.3390/plants10071468.

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The aim of this review is to summarize all the compounds identified and characterized from Euphorbia characias, along with the biological activities reported for this plant. Euphorbia is one of the greatest genera in the spurge family of Euphorbiaceae and includes different kinds of plants characterized by the presence of milky latex. Among them, the species Euphorbia characias L. is an evergreen perennial shrub widely distributed in Mediterranean countries. E. characias latex and extracts from different parts of the plant have been extensively studied, leading to the identification of several chemical components such as terpenoids, sterol hydrocarbons, saturated and unsaturated fatty acids, cerebrosides and phenolic and carboxylic acids. The biological properties range between antioxidant activities, antimicrobial, antiviral and pesticidal activities, wound-healing properties, anti-aging and hypoglycemic properties and inhibitory activities toward target enzymes related to different diseases, such as cholinesterases and xanthine oxidase. The information available in this review allows us to consider the plant E. characias as a potential source of compounds for biomedical research.

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Joshi, Tisha, Kirti Nagarkoti, Navadha Joshi, Avneesh Rawat, Om Prakash, Ravendra Kumar, Ravi Mohan Srivastava, Satya Kumar, Shilpi Rawat und Dharmendra Singh Rawat. „Comparative chemical composition and pesticidal evaluation of Acorus calamus accessions collected from different geographical locations“. European Journal of Chemistry 14, Nr. 1 (31.03.2023): 129–43. http://dx.doi.org/10.5155/eurjchem.14.1.129-143.2387.

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The objectives of the present study were to investigate the phytochemical composition of essential oils (EO) from rhizomes of Acorus calamus collected from Jorhat, Assam; Munsyari and Pantnagar, Uttarakhand, India. EOs were studied for different pesticidal activities viz; nematicidal, insecticidal, and herbicidal activity. To study the synergistic effect of EOs on pesticidal activity, four combinations of EOs were prepared. Phenylpropanoids with β-asarone as the main compound were identified in all collections with varying percentages. Its contribution was found to be 85.8% in Munsyari EOs followed by 74.3% in Pantnagar and 62.6% in Assam collections. All EOs exhibited dose-dependent in vitro nematicidal activity against Meloidogyne incognita in terms of immobility and inhibition of egg hatching. The activity was observed as maximum in the EO combination of all three collections (1:1:1) whereas minimum in the Assam collections. In insecticidal activity against Lipaphis erysimi and Selepa celtis, maximum mortality was observed in Munsyari collections. The oils were assessed for sprout inhibition activity in terms of seed germination inhibition, coleoptile growth of the shoot and root against Raphanus raphanistrum. Maximum seed germination inhibition, % shoot, and root growth inhibition were found in all collections EO combinations. To predict the possible mode of action and the structure-activity relationship between major compounds of EOs and biological activities, in silico molecular docking and ADME/Tox studies were performed. The docking results revealed the mode of action of proteins of insects, nematodes, and weeds and were found in support of in vitro experiments. The study may be helpful for the development of herbal-based pesticides after proper clinical trials.

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Gao, Meiying, Rongsen Li, Shunying Dai, Yan Wu und Dan Yi. „Diversity of Bacillus thuringiensis strains from soil in China and their pesticidal activities“. Biological Control 44, Nr. 3 (März 2008): 380–88. http://dx.doi.org/10.1016/j.biocontrol.2007.11.011.

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Tewary, Dhananjay Kumar, Anu Bhardwaj und Adarsh Shanker. „Pesticidal activities in five medicinal plants collected from mid hills of western Himalayas“. Industrial Crops and Products 22, Nr. 3 (November 2005): 241–47. http://dx.doi.org/10.1016/j.indcrop.2005.01.004.

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Bodajla, Michal, Štefan Stankovský und Katarína Špirková. „Synthesis of Some Azolylquinazolines“. Collection of Czechoslovak Chemical Communications 59, Nr. 6 (1994): 1463–66. http://dx.doi.org/10.1135/cccc19941463.

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The azole rings combined with carbonyl group via methylene bridge or with imidoyl group directly are frequent structural units of organic compounds possessing phytoefectorical and mainly pesticidal activities. In this connection we realized to prepare a series of pyrimidine ring substituted azolylquinazolines I - IV. The title compounds were prepared by reaction of 2,4-dichloroquinazoline with the corresponding azoles.

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Kalemba, Danuta, und Agnieszka Synowiec. „Agrobiological Interactions of Essential Oils of Two Menthol Mints: Mentha piperita and Mentha arvensis“. Molecules 25, Nr. 1 (23.12.2019): 59. http://dx.doi.org/10.3390/molecules25010059.

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This review article discusses the active constituents and potential of two menthol mint oils, Mentha piperita (MPEO) and Mentha arvensis (MAEO), as natural sources for botanical pesticides. The biological activities of these menthol mint oils, which can be useful in agriculture, have been broadly researched, especially toward phytotoxic microorganisms. To a lesser extent, the insecticidal and herbicidal activities of mint EOs have also been studied. It is apparent that the prospect of using menthol mint oils in agriculture is increasing in popularity. A number of investigations showed that the in vitro efficacy of MPEO and MAEO, as well as that of their main constituent, menthol, is pronounced. The results of in vitro research are useful for choosing EOs for further investigations. However, it is clear that in situ experiments are crucial and should be more extensively developed. At the same time, known techniques are to be applied to this area and new methods should be worked out, aiming at the improvement of EOs’ pesticidal efficacy and cost-effectiveness, for future implementation in agricultural pest control.

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Masih, Iffat, Nighat Fahmi und Rajkumar. „Template synthesis, spectroscopic studies, antimicrobial, nematicidal and pesticidal activities of chromium(III) macrocyclic complexes“. Journal of Enzyme Inhibition and Medicinal Chemistry 28, Nr. 1 (14.10.2011): 33–40. http://dx.doi.org/10.3109/14756366.2011.625022.

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Jain, Renuka, Satish C. Jain, Praveen Kumar Goyal und Shipra Vajpei. „Synthesis and Pesticidal Activities of O,O- Dialkyl-N-[(4-aryl)-2-thiazolyl] Phosphoramidothioates“. Phosphorus, Sulfur, and Silicon and the Related Elements 182, Nr. 11 (13.09.2007): 2605–10. http://dx.doi.org/10.1080/10426500701512208.

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Choi, Won-Sik, Seok-Woo Nam, Il-Doo Kim, Seung-Han Kim, Kun-Ho Park, In-Kyung Bae, Eun-Sil Park, Hwang-Ju Jeon und Sung-Eun Lee. „Synthesis and Pesticidal Activities of 5-(2-Cyclopropylaminopyrimidin-4-yl)-4-(thiophenyl)thiazole Derivatives“. Journal of Chemistry 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/241793.

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Pesticidal activities of 4-[5-(2-cyclopropylaminopyrimidin-4-yl)-4-(4-chloro-2-fluoro-phenyl)thiazol-2-yl]-1-methylpiperidine, designated as Comp I, have been determined against a mosquito larva,Culex pipiens pallens, and a phytopathogenic fungus,Phytophthora capsici. Comp I was used as the leading compound in this study. The compounds were synthesized by reacting them with two functional groups, 3-thiophenyl and 2-thiophenyl groups, instead of 4-chloro-2-fluorophenyl group in Comp I. Other functional groups such as 2-aminothiazole, 2-(1-methylpiperazin-4-yl)thiazole, and 2-(piperazin-4-yl)thiazole were also introduced instead of 2-methylpiperidin-4-yl-thiazole of Comp I. Compounds designated as XIII-6~XV-7 were newly synthesized and their structures were confirmed by1H- and13C-NMR spectroscopy. Mosquito larvicidal activities of all the synthesized compounds againstC. pipiens pallenswere examined and Comp I among them showed the strongest larvicidal activity as 0.513 mM of LC50value. The fungicidal activities of all the synthesized compounds againstP. capsiciwere examined using the whole plant method. Among the XIII-6~XV-7 chemicals, 5-(2-cyclopropylaminopyrimidin-4-yl)-4-(thiophen-2-yl)thiazol-2-amine (VIII-6) showed the most potent antifungal activityin vivo. While the EC50value of the commercial fungicide dimethomorph was 4.26 μM, EC50of VIII-6 was 0.94 μM. Therefore, thiazole derivatives can be considered as viable candidates for the control of mosquito larvae and plant diseases.

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Joshi, Krishna C., Renuka Jain, Anshu Dandia, Kanti Sharma und Satish C. Jain. „Synthesis and pesticidal activities of certain fluorine-containing 9H-1,2,4-triazolo[4,3-a] benzimidazoles“. Pesticide Science 29, Nr. 2 (1990): 143–49. http://dx.doi.org/10.1002/ps.2780290204.

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Singh, Nirmala, Sheenam Watts, Suresh C. Joshi und Ran V. Singh. „Pesticidal and antifertility activities of triorganogermanium(IV) complexes synthesized using a green chemical approach“. Applied Organometallic Chemistry 27, Nr. 5 (24.04.2013): 269–76. http://dx.doi.org/10.1002/aoc.2960.

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Xiang, Cai-Peng, Yan-Ni Shi, Fang-Fang Liu, Hai-Zhou Li, Ying-Jun Zhang, Chong-Ren Yang und Min Xu. „A Survey of the Chemical Compounds of Piper spp. (Piperaceae) and Their Biological Activities“. Natural Product Communications 11, Nr. 9 (September 2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100948.

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The genus Piper is one of the largest genera in the Piperaceae, with most species widely distributed globally, covering all continents. To date, many Piper species have been scientifically investigated for their chemical diversities and interesting broad spectrum of bioactivities, including central nervous system (CNS), pesticidal, antifungal and antibacterial effects. This review systematically summarizes the scaffolds of the alkaloids reported, the major chemicals isolated from Piper spp., and their biological activities. Besides the alkaloids, some neolignans with rearranged skeletons show structural diversities, while the chalcones, flavonoids and kava-pyrones have some potential activities. Herein, the sesquiterpenes and phenolic compounds from Piper species and their bioactivities are also surveyed.

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Kinareikina, Anna, und Elena Silivanova. „Impact of Insecticides at Sublethal Concentrations on the Enzyme Activities in Adult Musca domestica L.“ Toxics 11, Nr. 1 (01.01.2023): 47. http://dx.doi.org/10.3390/toxics11010047.

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Nowadays, the use of pesticides is, as before, the most common way to control arthropod plant pests and the ectoparasites of animals. The sublethal effects of pesticides on insects can appear at different levels, from genetics to populations, and the study of these effects is important for a better understanding of the environmental and evolutionary patterns of pesticidal resistance. The current study aimed to assess the sublethal effects of chlorfenapyr and fipronil on the activities of detoxifying enzymes (carboxylesterase—CarE, acetylcholinesterase—AChE, glutathione-S-transferase—GST, and cytochrome P450 monooxygenase—P450) in adults Musca domestica L. The insects were exposure to insecticides by a no-choice feeding test and the enzyme activities and the AChE kinetic parameters were examined in female and male specimens at 24 h after their exposure. According to Tukey’s test, the CarE activity was statistically significantly decreased by 29.63% in the females of M. domestica after an exposure to chlorfenapyr at a concentration of 0.015% when compared to the controls (p ≤ 0.05). An exposure to the sublethal concentration of fipronil (0.001%) was followed by a slightly decrease in the specific activity (33.20%, p ≤ 0.05) and the main kinetic parameters (Vmax, Km) of AChE in females in comparison with the control values. The GST and P450 activities had not significantly changed in M. domestica males and females 24 h after their exposure to chlorfenapyr and fipronil at sublethal concentrations. The results suggest that the males and females of M. domestica displayed biochemically different responses to fipronil, that is a neurotoxin, and chlorfenapyr, that is a decoupler of oxidative phosphorylation. Further research needs to be addressed to the molecular mechanisms underlying the peculiarities of the insect enzyme responses to different insecticides.

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Pyrko, A. N. „Synthesis and biological testing for pesticidal activity of 8-azasteroids“. Proceedings of Universities. Applied Chemistry and Biotechnology 12, Nr. 1 (01.04.2022): 8–14. http://dx.doi.org/10.21285/2227-2925-2022-12-1-8-14.

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The aim of the present study is the synthesis and testing for pesticidal activities of 2,3-dimethoxy16,16-dimethyl-D-homo-8-azagona-1,3,5(10),13-tetraene-12,17а-one and 2,3-dimethoxy-16,16-dimethyl-dhomo-8-azagona-1,3,5(10),13-tetraene-12-imino-17а-one hydrochloride which could become the basis the basis of plant protection products. The first compound was obtained by condensation of 6,7-dimethoxy-2,3- dihydroisoquinoline with 2-acetyl-5,5-dimethylcyclohexane-1,3-dione. The second substance was synthesized by interaction of the first with ammonium chloride. 2-Acetyl-5,5-dimethylcyclohexane-1,3-dione was prepared by heating dimedone with acetic acid in polyphosphoric acid. 6,7-Dimethoxy-2,3-dihydroisoquinoline was synthesized in two steps. Boiling 2-(3,5-dimethoxyphenyl)ethylamine in formic acid gave the corresponding amide, which was cyclized in the presence of phosphorus oxychloride. The structure of the obtained compounds is confirmed by the data of IR, 1H NMR, UV spectra and elemental analysis. In the IR absorption spectra of 2,3-dimethoxy-16,16-dimethyl-D-homo-8-azagona-1,3,5(10),13-tetraene-12,17a-dione and 2,3-dimethoxy-16,16-dimethyl-D-homo-8-azagona-1,3,5(10),13-tetraen-12-imino-17a-one hydrochloride, enaminodiketone bands are present (1535, 1580, 1615, 1625, 1670 cm-1 ) and enimine ketone (1595, 1650, 3260 cm-1 ) groups, respectively. Their UV absorption spectra recorded in ethanol contain two absorption bands (265.303 and 268.317 nm) corresponding to ππ* transitions of the same molecular fragments. The mass spectra of the two obtained tetracycles contain peaks of molecular ions. 1H NMR spectra correspond to the structures of all obtained compounds The synthesized compounds were tested for certain types of insecticide (against Toxoptera graminum, Musca domestica, Meloidogyne incognita, Heliothis virescens, Diabrotica undecimpunctata howardi, Caenorhabditis elegans), fungicidal (against Drechslera, Erysiphe, Puccinia, Peronospora) and herbicidal (against Amaranthus retroflexus, Brassica rapa, Abutilon theophrasti, Alopecurus myosuroides, Avena fatua, Echinochloa crus galli) activities. Both synthesized compounds showed herbicidal activity against Amaranthus retroflexus, Brassica rapa, Abutilon theophrasti and insecticidal activity against Toxoptera graminum. Hydrochloride 2,3-dimethoxy-16,16-dimethyl-D-homo-8-azagon-1,3,5(10),13- tetraene-12-imino-17a-one showed insecticidal activity against Musca domestica and fungicidal activity against Drechslera.

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Liu, Qiao-Xia, Bao-Lei Wang, Ming-Zhen Mao, Li-Xia Xiong und Zheng-Ming Li. „Synthesis and pesticidal activities of novel anthranilic diamides containing pyridylpyrazole and iminodithiocarbamate or thiosemicarbazone motifs“. Phosphorus, Sulfur, and Silicon and the Related Elements 193, Nr. 9 (02.09.2018): 593–99. http://dx.doi.org/10.1080/10426507.2018.1487433.

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Fahmi, Nighat, Iffat Masih und Kshipra Soni. „Template Synthesis, Characterization, Electrochemical Behavior, Antimicrobial, Nematicidal and Pesticidal Activities of Palladium(II) Macrocyclic Complexes“. Journal of Macromolecular Science, Part A 52, Nr. 7 (27.05.2015): 548–60. http://dx.doi.org/10.1080/10601325.2015.1039334.

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TIWARI, S., M. H. KHAN und NIZAMUDDIN NIZAMUDDIN. „ChemInform Abstract: Synthesis and Pesticidal Activities of Some 3-Substituted Benzoxazolo[3,2-c][1,2,4]triazoles.“ ChemInform 29, Nr. 6 (24.06.2010): no. http://dx.doi.org/10.1002/chin.199806167.

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Bhade, M. W. „Antifungal Assay of some Novel Chalcone Derivatives“. Current Agriculture Research Journal 11, Nr. 1 (10.05.2023): 258–64. http://dx.doi.org/10.12944/carj.11.1.22.

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Numerous heterocyclic compounds demonstrated a wide range of biological activities, including pesticidal, fungicidal, insecticidal, antioxidant, and analgesic properties. The majority of heterocycles have outstanding antitubercular, anticancer, and antimicrobial properties. These actions were documented by the researchers in both in-vitro and in-vivo settings. So we undertake the antifungal assay of synthesized compounds against some pathogens viz Candida albicans, Trichophyton rubrum, Aspergillus niger, and Trichophyton mentagoforum which are mainly responsible for the diseases in ornamental plants.

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Kaur, Amarpreet, Shalinder Kaur, Rupali Jandrotia, Harminder Pal Singh, Daizy Rani Batish, Ravinder Kumar Kohli, Virendra Singh Rana und Najam A. Shakil. „Parthenin—A Sesquiterpene Lactone with Multifaceted Biological Activities: Insights and Prospects“. Molecules 26, Nr. 17 (02.09.2021): 5347. http://dx.doi.org/10.3390/molecules26175347.

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Parthenin, a sesquiterpene lactone of pseudoguaianolide type, is the representative secondary metabolite of the tropical weed Parthenium hysterophorus (Asteraceae). It accounts for a multitude of biological activities, including toxicity, allergenicity, allelopathy, and pharmacological aspects of the plant. Thus far, parthenin and its derivatives have been tested for chemotherapeutic abilities, medicinal properties, and herbicidal/pesticidal activities. However, due to the lack of toxicity–bioactivity relationship studies, the versatile properties of parthenin are relatively less utilised. The possibility of exploiting parthenin in different scientific fields (e.g., chemistry, medicine, and agriculture) makes it a subject of analytical discussion. The present review highlights the multifaceted uses of parthenin, on-going research, constraints in the practical applicability, and the possible workarounds for its successful utilisation. The main aim of this comprehensive discussion is to bring parthenin to the attention of researchers, pharmacologists, natural product chemists, and chemical biologists and to open the door for its multidimensional applications.

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Peter Osarodion, Osarumwense. „Synthesis and Analgesic Activity of 3-(3-methoxyphenyl)-2-methylsulfanyl-3Hquinazolin-4-one (4) and 3-(3-methoxyphenyl)-2-thioxo-2,3-dihydro1H-quinazolin-4-one (3) Via N-(3- methoxyphenyl)-methyl dithiocarbamic acid (2).“ Endocrine System and Diabetes 2, Nr. 1 (06.02.2023): 01–05. http://dx.doi.org/10.58489/2836-502x/007.

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Introduction: 4(3H)-quinazolinone rings have been reported to possess different biological activities such as antibacterial, antifungal, antitubercular, antiviral, anticancer. These activities also include antihypertensive, diuretic, antimicrobial, pesticidal, anticonvulsant, anaesthetic and sedative activities, anti-malarial, and anti-diabetic. Methods/Experimental: The compound, 3-(3-methoxyphenyl)-2-thioxo-2,3-dihydro1H-quinazolin-4-one (3) was synthesized by dissolving Methyl anthranilate and N-(3- methoxyphenyl)-methyl dithiocarbamic acid in ethanol and anhydrous potassium carbonate and refluxed for 23 h and re-precipitated by treating with dilute hydrochloric. When tested for their in vitro analgesic activity using acetic acid induced induced writhing in mice, the compounds had Analgesic activity. Result: The compounds exhibited significant analgesic activity in the range of 74.67 - 83.80% in comparison to control. Conclusions: From our findings, the compounds synthesized have higher analgesic activities as compared to the standard analgesic drug.

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