Capsaicin as an Organophosphate Synergist Against Colorado Potato Beetle (Leptinotarsa Decemlineata Say)

Maliszewska, Justyna; Tęgowska, Eugenia

doi:10.2478/v10045-012-0005-8

Cited by 18 publications

(10 citation statements)

References 16 publications

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“…In our studies, we used EXT, which did not cause lethal effects [ 12 ], which could result in no increase in lethality in the first variant of the experiment. However, other studies of Maliszewska and Tęgowska [ 55 ] shows that capsaicin which does not have insecticidal properties, added to an organophosphorus insecticide, methidathion, increased its toxicity. Therefore, the effects may be alkaloid-specific.…”

Section: Resultsmentioning

confidence: 99%

Solanum nigrum Fruit Extract Increases Toxicity of Fenitrothion—A Synthetic Insecticide, in the Mealworm Beetle Tenebrio molitor Larvae

Spochacz

Szymczak

Chowański

et al. 2020

Toxins

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Synthetic insecticides are widely used for crop protection both in the fields and in the food stored facilities. Due to their toxicity, and assumptions of Integrated Pest Management, we conducted two independent experiments, where we studied the influence of Solanum nigrum unripe fruit extract on the toxicity of an organophosphorus insecticide fenitrothion. In the first variant of the experiment, Tenebrio molitor larvae were fed with blended fenitrothion (LC50) and the extract in four concentrations (0.01, 0.1, 1 and 10%) in ratio 1:1 for 3 days. In the second variant, a two-day application of fenitrothion (LC40) was preceded by a one-day extract treatment. The first variant did not show any increase in lethality compared to fenitrothion; however, ultrastructure observations exhibited swollen endoplasmic reticulum (ER) membranes in the midgut and nuclear and cellular membranes in the fat body, after application of blended fenitrothion and extract. An increased amount of heterochromatin in the fat body was observed, too. In the second variant, pre-treatment of the extract increased the lethality of larvae, decreased the level of glycogen and lipids in the fat body and disrupted integrity of midgut cellular membranes. S. nigrum extract, applied prior to fenitrothion treatment can be a factor increasing fenitrothion toxicity in T. molitor larvae. Thus, this strategy may lead to decreased emission of synthetic insecticides to the environment.

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Section: Resultsmentioning

confidence: 99%

Solanum nigrum Fruit Extract Increases Toxicity of Fenitrothion—A Synthetic Insecticide, in the Mealworm Beetle Tenebrio molitor Larvae

Spochacz

Szymczak

Chowański

et al. 2020

Toxins

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show abstract

“…There are several evidences that these compounds may be used as bio-insecticides to control several pests that affect different crops. For instance, capsaicin is an effective biopesticide against Myzus persicae and Leptinotarsa decemlineata (Maliszewska & Tęgowska 2012, Koleva-Gudeva et al 2013b.…”

Section: Resultsmentioning

confidence: 99%

Capsaicinoids and pungency in Capsicum chinense and Capsicum baccatum fruits1

Guillen

Tito

Mendoza

2018

Pesqui. Agropecu. Trop.

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Capsicum chinense Jacq. and C. baccatum var. pendulum fruits are widely used in the food and processed food industry, in Peru, but their seeds and placentas are discarded as residues. This study aimed to quantify the proportion of edible (pericarp) and non-edible (seeds, placenta and interlocular septa) parts of the fruits, in market condition (semi-dried fruits of C. chinense and fresh fruits of C. baccatum), as well as to quantify the capsaicinoids and their pungency, in extracts of each fruit part previously dried. The pericarp represents 63 % and 85 % of the fruit, respectively for C. chinense and C. baccatum. The placenta stands for ~10 % of the fruit in both species, whereas, for the seeds, the index is 23 % in C. chinense and 5 % in C. baccatum. The content of capsaicinoids and pungency vary among the fruit parts and the species. High contents of capsaicinoids and pungency are found in non-edible parts of the fruit, mainly in the placenta (79 % in C. chinense and 51 % in C. baccatum). Regardless of the fruit part and species, the capsaicin was the major component of capsaicinoids (4,399 ug g-1 and 1,582 ug g-1 of the dry weight in C. chinense and C. baccatum, respectively), while dihydrocapsaicin and nordihydrocapsaicin reached a lower content. C. chinense contains more capsaicinoids and, thus, a much higher level of pungency than the C. baccatum fruits.

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“…Thymin, 4-methyloxazole, succinimide, pyrocatechol and caryophyllene has been previously reported for antibacterial and antifungal potential [40–45]. Furthermore, phenolic acid, farnesol, myristic acid, Arachidic acid methyl ester and capsaicin has been demonstrated against pathogenic bacteria and fungi [46–52]. The antimicrobial action of P. hydropiper can be attributed to the presence of these bioactive compounds.…”

Section: Discussionmentioning

confidence: 99%

Chemical profiling, antimicrobial and insecticidal evaluations of Polygonum hydropiper L

Ayaz

Junaid

Ullah

et al. 2016

BMC Complement Altern Med

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BackgroundThe emergence of multidrug resistant (MDR) pathogens is of great concern to the global health community. Our ability to effectively treat diseases is based on the discovery of potent drugs for the treatment of these challenging diseases. Traditional medicines are one of the major sources for the discovery of safe, effective and economical drug candidates. In order to validate its antibacterial, antifungal and insecticidal potentials with respect to traditional uses, we have screened for the first time Polygonum hydropiper against pathogenic bacterial, fungal strains and a variety of insects.Methods Polygonum hydropiper samples including crude extract (Ph.Cr), subsequent fractions; n-hexane (Ph.Hex), chloroform (Ph.Chf), ethyl acetate (Ph.EtAc), n-Butanol (Ph.Bt), aqueous (Ph.Aq) and crude saponins (Ph.Sp) were tested against pathogenic bacterial and fungal strains. Insecticidal activities were performed against Tribolium castaneum and Rhyzopertha dominica and Monomorium pharaonis. Ph.Cr was analyzed by gas chromatography–mass spectrometry (GC-MS) for preliminary identification of chemical constituents.ResultsIn disc diffusion assay, Ph.Chf, Ph.Hex, Ph.EtAc and Ph.Sp exhibited highest activity against Enterococcus faecalis. MICs of Ph.Chf against Enterococcus faecalis, Klebsiella pneumoniae, Escherichia coli, P. mirabilis, Staphylococcus aureus, Salmonella typhi and Pseudomonas aeruginosa were 32.00, 13.33, 10.66, 5.33, 64.00, 8.66 and 10.66 μg/ml respectively. MFC’s of Ph.Chf against Aspergillus fumigatus, Aspergillus flavus, Aspergillus niger and Fusarium oxysporum were 16.66, 23.33, 125.00 and 46.66 μg/ml respectively. Ph.EtAc, Ph.Sp, Ph.Chf and Ph.Bt were most active fractions against T. castaneum and R. dominica. Ph.Sp being most active against A. punctatum exhibited LC50 of < 0.01 mg/ml. In GC-MS analysis of Ph.Cr, 124 compounds were identified among which several bioactive antibacterial, antifungal and insecticidal compounds were found.Conclusions P. hydropiper samples exhibited broad spectrum of activity against bacterial and fungal strains. Our results support previously reported insecticidal properties of saponins and may provide scientific justification for the ethno-medicinal uses of the plant.Electronic supplementary materialThe online version of this article (doi:10.1186/s12906-016-1491-4) contains supplementary material, which is available to authorized users.

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Capsaicin as an Organophosphate Synergist Against Colorado Potato Beetle (Leptinotarsa Decemlineata Say)

Cited by 18 publications

References 16 publications

Solanum nigrum Fruit Extract Increases Toxicity of Fenitrothion—A Synthetic Insecticide, in the Mealworm Beetle Tenebrio molitor Larvae

Solanum nigrum Fruit Extract Increases Toxicity of Fenitrothion—A Synthetic Insecticide, in the Mealworm Beetle Tenebrio molitor Larvae

Capsaicinoids and pungency in Capsicum chinense and Capsicum baccatum fruits1

Chemical profiling, antimicrobial and insecticidal evaluations of Polygonum hydropiper L

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