Compatibility of entomopathogenic nematodes with pesticides registered in vegetable crops under laboratory conditions

Özdemir, Esengül; İnak, Emre; Evlice, Emre; Laznik, Žiga

doi:10.1007/s41348-020-00337-7

Cited by 27 publications

(23 citation statements)

References 19 publications

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“…Also, the combination of entomopathogens with pesticides could reduce the needed amount of the chosen pesticide. This kind of trials always requires checking for possible adverse effects of the chemical on the viability of organisms or microorganisms coupled in the formulation and during the administration 57 – 59 .…”

Section: Discussionmentioning

confidence: 99%

Susceptibility of Drosophila suzukii larvae to the combined administration of the entomopathogens Bacillus thuringiensis and Steinernema carpocapsae

Mastore

Quadroni

Brivio

2021

Sci Rep

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Non-native pests are often responsible for serious crop damage. Since Drosophila suzukii has invaded North America and Europe, the global production of soft, thin-skinned fruits has suffered severe losses. The control of this dipteran by pesticides, although commonly used, is not recommended because of the negative impact on the environment and human health. A possible alternative is the use of bio-insecticides, including Bacillus thuringiensis and entomopathogenic nematodes, such as Steinernema carpocapsae. These biological control agents have a fair effectiveness when used individually on D. suzukii, but both have limits related to different environmental, methodological, and physiological factors. In this work, we tested various concentrations of B. thuringiensis and S. carpocapsae to evaluate their efficacy on D. suzukii larvae, when administered individually or in combination by using agar traps. In the combined trials, we added the nematodes after 16 h or concurrently to the bacteria, and assessed larvae lethality from 16 to 48 h. The assays demonstrated a higher efficacy of the combined administration, both time-shifted and concurrent; the obtained data also showed a relevant decrease of the time needed to kill the larvae. Particularly, the maximum mortality rate, corresponding to 79% already at 16 h, was observed with the highest concentrations (0.564 µg/mL of B. thuringiensis and 8 × 102 IJs of S. carpocapsae) in the concurrent trials. This study, conducted by laboratory tests under controlled conditions, is a good starting point to develop a further application step through field studies for the control of D. suzukii.

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Section: Discussionmentioning

confidence: 99%

Susceptibility of Drosophila suzukii larvae to the combined administration of the entomopathogens Bacillus thuringiensis and Steinernema carpocapsae

Mastore

Quadroni

Brivio

2021

Sci Rep

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“…The highest aquatic toxicity against Tetrahymena pyriformis was also estimated for the compounds with the same structural feature (3, 8, 33, 35, 37, 38), as well as for compounds with 3-acetyl substituents (16,20,22). Potentially highly toxic for the fish, fathead minnows, are also compounds 3, 8, 22, 21, and 38.…”

Section: Estimation Of Toxicitymentioning

confidence: 94%

“…EPNs share ancestral traits with Caenorhabditis elegans [ 19 ], so they are also an excellent model to investigate selectivity of pesticides on non-target soil organisms. The advantage of entomopathogenic nematodes is resilience after exposure to pesticides and agrochemicals [ 20 ], as they could be tank mixed with other pesticides for synergetic effect, which supports the principles of sustainable agriculture.…”

Section: Introductionmentioning

confidence: 99%

Biological Activities Related to Plant Protection and Environmental Effects of Coumarin Derivatives: QSAR and Molecular Docking Studies

Rastija

Vrandečić

Ćosić

et al. 2021

IJMS

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The aim was to study the inhibitory effects of coumarin derivatives on the plant pathogenic fungi, as well as beneficial bacteria and nematodes. The antifungal assay was performed on four cultures of phytopathogenic fungi by measuring the radial growth of the fungal colonies. Antibacterial activity was determined by the broth microdilution method performed on two beneficial soil organisms. Nematicidal activity was tested on two entomopathogenic nematodes. The quantitative structure-activity relationship (QSAR) model was generated by genetic algorithm, and toxicity was estimated by T.E.S.T. software. The mode of inhibition of enzymes related to the antifungal activity is elucidated by molecular docking. Coumarin derivatives were most effective against Macrophomina phaseolina and Sclerotinia sclerotiorum, but were not harmful against beneficial nematodes and bacteria. A predictive QSAR model was obtained for the activity against M. phaseolina (R2tr = 0.78; R2ext= 0.67; Q2loo = 0.67). A QSAR study showed that multiple electron-withdrawal groups, especially at position C-3, enhanced activities against M. phaseolina, while the hydrophobic benzoyl group at the pyrone ring, and –Br, –OH, -OCH3, at the benzene ring, may increase inhibition of S. sclerotiourum. Tested compounds possibly act inhibitory against plant wall-degrading enzymes, proteinase K. Coumarin derivatives are the potentially active ingredient of environmentally friendly plant-protection products.

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“…Vegetables are the most important food for consumers in daily life, providing irreplaceable nutrients and vitamins. Diseases and pests are important factors in vegetable cultivation; they not only affect the growth and appearance of vegetables but also their yield and quality [1][2][3][4]. However, there are variety of vegetable diseases and pests, especially in protected agriculture with high humidities and temperatures, eliciting the more frequent occurrence of diseases and pests [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Development Status and Perspectives of Crop Protection Machinery and Techniques for Vegetables

Wang

Xue

2022

Horticulturae

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Diseases and pests are important factors in vegetable cultivation; they not only affect the growth and appearance of vegetables but also affect the yield and quality. The disease and pest control of vegetables is dominated by chemical sprays, for now. As a result, the excessive use of pesticides has been a crucial factor of pesticides’ non-point source pollution, and it is also the main cause of excessive pesticide residues in vegetables. Therefore, the design of efficient plant protection machinery and technology has become an urgent demand in order to ensure the quality and safety of vegetables. In this review, the machinery and technologies for vegetable protection are introduced from the aspects of chemical control and physical control. In the aspect of chemical control, handheld sprayers, self-propelled or track sprayers, fixed-pipe spray systems, vertical and horizontal boom sprayers, unmanned aerial vehicles (UAVs) and vegetable seed treatment techniques are introduced. In the aspect of physical control, soil physical disinfection, pest trapping technologies and ozone sterilizers are introduced. Finally, the existing problems and perspectives of pesticide application sprayers and physical control equipment for vegetables are summarized. This paper can provide references for vegetable growers and researchers.

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Compatibility of entomopathogenic nematodes with pesticides registered in vegetable crops under laboratory conditions

Cited by 27 publications

References 19 publications

Susceptibility of Drosophila suzukii larvae to the combined administration of the entomopathogens Bacillus thuringiensis and Steinernema carpocapsae

Susceptibility of Drosophila suzukii larvae to the combined administration of the entomopathogens Bacillus thuringiensis and Steinernema carpocapsae

Biological Activities Related to Plant Protection and Environmental Effects of Coumarin Derivatives: QSAR and Molecular Docking Studies

Development Status and Perspectives of Crop Protection Machinery and Techniques for Vegetables

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