A5091847740- Insect Pest Control Strategies
- Insect-Plant Interactions and Control
- Insect symbiosis and bacterial influences
- Plant Pathogens and Fungal Diseases
- Mycotoxins in Agriculture and Food
- Essential Oils and Antimicrobial Activity
- Insect and Pesticide Research
- Insect Resistance and Genetics
- Entomopathogenic Microorganisms in Pest Control
- Trypanosoma species research and implications
- Wheat and Barley Genetics and Pathology
- Fungal Biology and Applications
- Insect Pheromone Research and Control
- Neurobiology and Insect Physiology Research
- Plant-Microbe Interactions and Immunity
- Hemiptera Insect Studies
- Insect Utilization and Effects
- Phytochemical compounds biological activities
- Medicinal Plant Research
- Insect and Arachnid Ecology and Behavior
- Helminth infection and control
- Parasitic Diseases Research and Treatment
- Biochemical and biochemical processes
- Pesticide Exposure and Toxicity
- Antioxidant Activity and Oxidative Stress
Consejo Nacional de Investigaciones Científicas y Técnicas
2013-2024
Universidad Nacional de La Plata
2011-2024
Biochemistry Research Institute of La Plata
2011-2023
Centro Científico Tecnológico - La Plata
2019-2023
Centro Científico Tecnológico - San Juan
2020
Instituto de Biotecnología y Biología Molecular
2009
Triatoma infestans-mediated transmission of Tripanosoma cruzi, the causative agent Chagas disease, remains as a major health issue in southern South America. Key factors T. infestans prevalence specific areas geographic Gran Chaco region-which extends through northern Argentina, Bolivia, and Paraguay-are both recurrent reinfestations after insecticide spraying emerging pyrethroid-resistance over past ten years. Among alternative control tools, pathogenicity entomopathogenic fungi against...
Malaria incidence has halved since the year 2000, with 80% of reduction attributable to use insecticides. However, insecticide resistance is now widespread, rapidly increasing in spectrum and intensity across Africa, may be contributing increase malaria 2018. The role detoxification enzymes target site mutations been documented major vector Anopheles gambiae ; however, emergence striking resistant phenotypes suggests occurrence additional mechanisms. By comparing legs, most relevant insect...
Plant and herbal essential oils (EOs) offer a wide range of pharmacological actions that include anticancer effects. Here, we evaluated the cytotoxic activity EO from Lippia alba (chemotype linalool), L. dihydrocarvone, LaDEO), Clinopodium nepeta (L.) Kuntze (CnEO), Eucalyptus globulus, Origanum × paniculatum, Mentha piperita, arvensis L., Rosmarinus officinalis against human lung (A549) colon (HCT-116) cancer cells. The cells were treated with increasing concentrations (0-500 µL/L) for 24...
The effects of the essential oil mandarin peel (Corrientes, Argentina) and limonene (its major component) were studied on two human tumour cell lines growth (lung adenocarcinoma A549 hepatocarcinoma HepG2). was obtained by cold press its composition investigated gas chromatography (GC) GC/mass spectrometry (MS) analysis. antiproliferative effect using an MTT assay. Both tested showed a strong dose-dependent inhibition these lines. more effective in than HepG2 cells both cases. It is likely...
Background Current Chagas disease vector control strategies, based on chemical insecticide spraying, are growingly threatened by the emergence of pyrethroid-resistant Triatoma infestans populations in Gran Chaco region South America. Methodology and findings We have already shown that entomopathogenic fungus Beauveria bassiana has ability to breach insect cuticle is effective both against pyrethroid-susceptible T. infestans, laboratory as well field assays. It also known lipids play a major...
Abstract Background The triatomine bugs are vectors of the protozoan parasite Trypanosoma cruzi , causative agent Chagas disease. Aggregation behavior plays an important role in their survival by facilitating location refuges and cohesion aggregates, helping to keep them safely assembled into shelters during daylight time, when they vulnerable predators. There evidences that aggregation is mediated thigmotaxis, volatile cues from faeces, hexane-extractable contact chemoreceptive signals...
At least 20 epidemics of Fusarium head blight (FHB) wheat have been registered in the last 50 years Argentina, with variable intensity. Damage induced by disease is further aggravated presence mycotoxins affected grains that may cause health problems to humans and animals. The trichothecene chemotype was analyzed for 112 isolates graminearum from Argentina polymerase chain reaction two field trials were conducted study aggressiveness a subsample 14 representative analyze deoxynivalenol (DON)...
Triatoma dimidiata Latreille is a major vector of Chagas disease with an extensive geographic distribution from Central Mexico, through America, to northern South America. As result its variability in phenetic and genetic characters, disagreement concerning taxonomic status has been raised. In this study, the cuticular hydrocarbon pattern T. populations Belize, Guatemala, Honduras, Costa Rica, Colombia was analyzed by capillary gas chromatography coupled mass spectrometry; linear...
Abstract Insect cuticle hydrocarbons are involved primarily in waterproofing the cuticle, but also participate chemical communication and regulate penetration of insecticides microorganisms. The last step insect hydrocarbon biosynthesis is carried out by an insect‐specific cytochrome P450 4G subfamily (CYP4G). Two genes ( CYP4G106 CYP4G107 ) have been reported triatomines Rhodnius prolixus Triatoma infestans . In this work, their molecular functional characterization R , relevance to...
Fusarium graminearum (Schwabe) contaminates agricultural crops and commodities with trichothecenes, mostly deoxynivalenol its acetyl-derivatives. Current techniques available to detect final mycotoxin contamination products usually require an extended time lag between sampling the corresponding report, include different clean-up steps eventually derivatisation. This study was aimed develop a methodology toxigenic F. prior production. Headspace solid-phase microextraction coupled capillary...
Solid phase microextraction (SPME) coupled to capillary gas chromatography (CGC) and mass spectrometry (MS) was used evaluate the use of fungal volatiles discriminate Fusarium species from wheat cultivars in Argentina pampa region. Monosporic isolates were grown on rice sealed containers for 1 week volatile organic compounds (VOC) sampled 30 min head space by SPME analysed CGC CGCMS. VOC profiles F. graminearum, poae, equiseti, verticillioides oxysporum discriminated comparison their elution...
Abstract BACKGROUND The redbanded stink bug Piezodorus guildinii (Heteroptera: Pentatomidae) is one of the most important species affecting soybean crops in southern South America. Capillary gas chromatography coupled to mass spectrometry was used characterize epicuticular hydrocarbon profiles field‐collected insects, and identify differences their composition between fifth‐instar nymphs adults, males females, bugs collected insecticide‐treated insecticide‐free crops. RESULTS Straight chain...
Triatoma infestans Klug (Hemiptera: Reduviidae) populations were sampled in various localities throughout most of the species' geographic range distribution Argentina, Bolivia, Paraguay and Peru. In order to contribute understanding diversity population structure this major vector Chagas' disease, cuticular hydrocarbon (CHC) profiles analysed by capillary gas chromatography variations evaluated statistical methods classification ordination. High levels intrapopulation variation detected,...
Entomopathogenic fungi such as Beauveria bassiana are extensively used for the control of insect pests worldwide. They infect mostly by adhesion to surface and penetration through cuticle. However, some insects, red flour beetle Tribolium castaneum (Herbst), have evolved resistance embedding their cuticle with antifungal compounds. Thus, they avoid fungal germination on cuticle, which result in low susceptibility entomopathogenic fungi. In adult T. castaneum, these antifungals well-known...
The epicuticular hydrocarbons of the larval, pupal and adult stages sugarcane borer Diatraea saccharalis Fabricius (Lepidoptera: Crambidae) are analysed. Dramatic changes observed between studied. Adult mostly saturated, with a predominance 1–4 methyl‐branched straight carbon skeletons 37–47 atoms; major components isomeric mixtures internally branched trimethylderivatives C39, C37 C41 backbones. By contrast, very small amounts detected in pupae, although chain 23–35 carbons prevailing...
Abstract Physically disturbed Triatoma infestans (Hemiptera: Reduviidae) adults, as well adults of other Chagas' disease vectors, secrete a mix volatile organic compounds (VOCs) with alarm and possible sexual defence functions. The aim the present research was to test whether infection entomopathogenic fungus Beauveria bassiana (Ascomycota: Hypocreales: Clavicipitaceae) has an effect on VOC secretion in T. expression two genes ( Ti‐brnq Ti‐bckdc ) potentially involved biosynthesis. volatiles...