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Prof. Maria Echeverria
Universidad Técncia del Norte

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0 Essential Oils
0 Soil Microbiology
0 agricultural biotechnology
0 composting process
0 Arbuscular Micorrhizal Fungi

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Journal article
Published: 25 February 2020 in Insects
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Blowflies are known vectors of many foodborne pathogens and unintentional human ingestion of maggots by meat consumption may lead to intestinal myiasis. In fact, the control of insect pests is an important aspect of industrial and home-made food processing and blowflies (Diptera: Calliphoridae), which are among the most important pests involved in the damage of meat products. Most spices, largely used in food preparations and industry, contain essential oils that are toxic and repellent against insects and exert antimicrobial activity. In this study, we assessed the electro-antennographic responses, the oviposition deterrence, the toxicity, and the repellence of the essential oils (EOs) of Allium sativum L., Salvia officinalis L., and Rosmarinus officinalis L. against the blowfly Calliphora vomitoria L. We tested the EOs antibacterial and antifungal properties and the efficacy of an A. sativum EO-charged mist sprayed in the tunnel entryway of a meat processing room to form an olfactive barrier against the entrance of flies. The results showed that the EOs are perceived by female blowfly’ antennae and exert an evident repellent activity against them completely deterring the oviposition for up to 24 h starting from the concentration of 2.5 μL cm−2 EO. The EOs also exhibited toxic activity by both topical application (LD50 from 0.44 to 1.97 μL insect−1) and fumigation (LC50 from 1.76 to 31.52 μL L−1) against adults of C. vomitoria and were able to exert a clear antimicrobial activity toward pathogens. Lastly, the EO-charged mist was able to reduce by about 40% the presence of Calliphoridae in the meat processing room of a dry-ham factory.

ACS Style

Stefano Bedini; Salvatore Guarino; Maria Cristina Echeverria; Guido Flamini; Roberta Ascrizzi; Augusto Loni; Barbara Conti. Allium sativum, Rosmarinus officinalis, and Salvia officinalis Essential Oils: A Spiced Shield against Blowflies. Insects 2020, 11, 143 .

AMA Style

Stefano Bedini, Salvatore Guarino, Maria Cristina Echeverria, Guido Flamini, Roberta Ascrizzi, Augusto Loni, Barbara Conti. Allium sativum, Rosmarinus officinalis, and Salvia officinalis Essential Oils: A Spiced Shield against Blowflies. Insects. 2020; 11 (3):143.

Chicago/Turabian Style

Stefano Bedini; Salvatore Guarino; Maria Cristina Echeverria; Guido Flamini; Roberta Ascrizzi; Augusto Loni; Barbara Conti. 2020. "Allium sativum, Rosmarinus officinalis, and Salvia officinalis Essential Oils: A Spiced Shield against Blowflies." Insects 11, no. 3: 143.

Journal article
Published: 14 June 2019 in Insects
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Sitophilus zeamais (Motschulsky) is considered as one of the most destructive foodstuff pests. Due to their efficiency, low toxicity for mammalians and low environmental impact, plant-derived essential oils (EOs) are promising tools for pest control. In particular, the OEs extracted from Lamiaceae are considered among the most bioactive in terms of repellent and/or insecticidal effect. Here, we investigated the repellence of the EOs extracted from two aromatic plant species typical of the flora of the Ecuadorian Andes, Clinopodium tomentosum and C. nubigeum, against adults of S. zeamais. The behavioral assays carried out at concentrations ranging from 0.7 to 23.9 μL L-1 air in a two-way static olfactometer showed a significant repellent effect starting from the concentration of 8.4 mL L-1 air both for the EO of C. nubigenum and C. tomentosum. We also carried out a complete structural analysis of the antenna of S. zeamais using scanning (SEM) and transmission electron microscopy (TEM), in order to characterize the olfactory sensilla equipment. In this species, there is no sexual dimorphism also as regards to the antennal morphology and the sensilla type and distribution. We identified six type of sensilla, among which at least three types (Sensillum Trichoideum 1, Sensillum Trichoideum 2 and Grooved Peg Sensillum) can be considered as olfactory. Electroantennography (EAG) recordings carried out on S. zeamais revealed a positive dose-response to both EOs, without differences between the two sexes.

ACS Style

Roberto Romani; Stefano Bedini; Gianandrea Salerno; Roberta Ascrizzi; Guido Flamini; Maria Cristina Echeverria; Priscilla Farina; Barbara Conti. Andean Flora as a Source of New Repellents against Insect Pests: Behavioral, Morphological and Electrophysiological Studies on Sitophilus zeamais (Coleoptera: Curculionidae). Insects 2019, 10, 171 .

AMA Style

Roberto Romani, Stefano Bedini, Gianandrea Salerno, Roberta Ascrizzi, Guido Flamini, Maria Cristina Echeverria, Priscilla Farina, Barbara Conti. Andean Flora as a Source of New Repellents against Insect Pests: Behavioral, Morphological and Electrophysiological Studies on Sitophilus zeamais (Coleoptera: Curculionidae). Insects. 2019; 10 (6):171.

Chicago/Turabian Style

Roberto Romani; Stefano Bedini; Gianandrea Salerno; Roberta Ascrizzi; Guido Flamini; Maria Cristina Echeverria; Priscilla Farina; Barbara Conti. 2019. "Andean Flora as a Source of New Repellents against Insect Pests: Behavioral, Morphological and Electrophysiological Studies on Sitophilus zeamais (Coleoptera: Curculionidae)." Insects 10, no. 6: 171.

Journal article
Published: 01 September 2017 in Molecular Phylogenetics and Evolution
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Streptomyces scabies is a common soil bacterium that causes scab symptoms in potatoes. Strong evidence indicates horizontal gene transfer (HGT) among bacteria has influenced the evolution of this plant pathogen and other Streptomyces spp. To extend the study of the HGT to the Streptomyces genus, we explored the effects of the inter-domain HGT in the S. scabies genome. We employed a semi-automatic pipeline based on BLASTp searches and phylogenetic reconstruction. The data show low impact of inter-domain HGT in the S. scabies genome; however, we found a putative plant pathogenesis related 1 (PR1) sequence in the genome of S. scabies and other species of the genus. It is possible that this gene could be used by S. scabies to out-compete other soil organisms.

ACS Style

Vinicio Danilo Armijos-Jaramillo; Daniela Santander-Gordón; Rosa Soria; Mauro Pazmiño Betancourth; María Cristina Echeverría. A whole genome analysis reveals the presence of a plant PR1 sequence in the potato pathogen Streptomyces scabies and other Streptomyces species. Molecular Phylogenetics and Evolution 2017, 114, 346 -352.

AMA Style

Vinicio Danilo Armijos-Jaramillo, Daniela Santander-Gordón, Rosa Soria, Mauro Pazmiño Betancourth, María Cristina Echeverría. A whole genome analysis reveals the presence of a plant PR1 sequence in the potato pathogen Streptomyces scabies and other Streptomyces species. Molecular Phylogenetics and Evolution. 2017; 114 ():346-352.

Chicago/Turabian Style

Vinicio Danilo Armijos-Jaramillo; Daniela Santander-Gordón; Rosa Soria; Mauro Pazmiño Betancourth; María Cristina Echeverría. 2017. "A whole genome analysis reveals the presence of a plant PR1 sequence in the potato pathogen Streptomyces scabies and other Streptomyces species." Molecular Phylogenetics and Evolution 114, no. : 346-352.

Journal article
Published: 13 February 2017 in Parasites & Vectors
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Synanthropic flies play a considerable role in the transmission of pathogenic and non-pathogenic microorganisms. In this work, the essential oil (EO) of two aromatic plants, Artemisia annua and Artemisia dracunculus, were evaluated for their abilities to control the blowfly Calliphora vomitoria. Artemisia annua and A. dracunculus EOs were extracted, analysed and tested in laboratory bioassays. Besides, the physiology of EOs toxicity and the EOs antibacterial and antifungal properties were evaluated. Both Artemisia EOs deterred C. vomitoria oviposition on fresh beef meat. At 0.05 μl cm-2A. dracunculus EO completely inhibited C. vomitoria oviposition. Toxicity tests, by contact, showed LD50 of 0.49 and 0.79 μl EO per fly for A. dracunculus and A. annua, respectively. By fumigation, LC50 values were 49.55 and 88.09 μl l-1 air for A. dracunculus and A. annua, respectively. EOs AChE inhibition in C. vomitoria (IC50 = 202.6 and 472.4 mg l-1, respectively, for A. dracunculus and A. annua) indicated that insect neural sites are targeted by the EOs toxicity. Finally, the antibacterial and antifungal activities of the two Artemisia EOs may assist in the reduction of transmission of microbial infections/contaminations. Results suggest that Artemisia EOs could be of use in the control of C. vomitoria, a common vector of pathogenic microorganisms and agent of human and animal cutaneous myiasis. The prevention of pathogenic and parasitic infections is a priority for human and animal health. The Artemisia EOs could represent an eco-friendly, low-cost alternative to synthetic repellents and insecticides to fight synanthropic disease-carrying blowflies.

ACS Style

Stefano Bedini; Guido Flamini; Francesca Cosci; Roberta Ascrizzi; Maria Cristina Echeverria; Lucia Guidi; Marco Landi; Andrea Lucchi; Barbara Conti. Artemisia spp. essential oils against the disease-carrying blowfly Calliphora vomitoria. Parasites & Vectors 2017, 10, 1 -10.

AMA Style

Stefano Bedini, Guido Flamini, Francesca Cosci, Roberta Ascrizzi, Maria Cristina Echeverria, Lucia Guidi, Marco Landi, Andrea Lucchi, Barbara Conti. Artemisia spp. essential oils against the disease-carrying blowfly Calliphora vomitoria. Parasites & Vectors. 2017; 10 (1):1-10.

Chicago/Turabian Style

Stefano Bedini; Guido Flamini; Francesca Cosci; Roberta Ascrizzi; Maria Cristina Echeverria; Lucia Guidi; Marco Landi; Andrea Lucchi; Barbara Conti. 2017. "Artemisia spp. essential oils against the disease-carrying blowfly Calliphora vomitoria." Parasites & Vectors 10, no. 1: 1-10.