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Biostimulant Potential of Colombian Mangrove-Associated Pseudomonas spp. for Sustainable Seed Priming
No full textModern agriculture faces critical challenges from soil degradation and excessive use of chemical fertilizers, threatening sustainable seed germination and crop establishment. The main objective of this research was to evaluate the feasibility of using Pseudomonas spp. isolated from Colombian mangrove sediments as biofertilizers to enhance crop productivity, with an emphasis on Lactuca sativa (lettuce) seed-to-seedling transition. Fifty-eight isolates were characterized and screened for their ability to improve the germination of the lettuce seeds, but only nine strains showed promising activity. The strains were identified at the species level and screened for Plant growth-promoting rhizobacteria (PGPR) traits such as indole-3-acetic acid (IAA) production, phosphate solubilization, organic acid production, and salt tolerance (5%). Four different species were identified, namely Pseudomonas putida (one strain), Pseudomonas monteiilli (two strains), Pseudomonas taiwanensis (one strain), and Pseudomonas aeruginosa (four strains). P. aeruginosa strains P8 and P9 demonstrated exceptional performance, significantly improving root elongation, seedling biomass, and antioxidant activity compared with the uninoculated plants in vitro. These strains showed dual agrobiotechnological value: (i) enhancing early seedling vigor through hormonal stimulation and (ii) improving nutrient availability via phosphate solubilization. Our findings highlight the biotechnological potential of mangrove-associated Pseudomonas spp. as a sustainable alternative to chemical fertilizers, particularly for seed priming and seedling establishment systems in stress-prone soils
Guerra, propaganda e nuove tecnologie: la manipolazione dell’opinione pubblica e la fiducia nelle istituzioni
No full textQuinoxyfen 1995-2019 is the story's end? Evaluation of its adverse effects on head size and nervous system genes involved in synaptic maturation
No full text: In 2013 quinoxyfen (QXY) was included in the list of priority hazard pollutants of the European Water Framework Directive due to its toxicity to aquatic organisms. The use of products formulated containing QXY was banned from all commercials starting from 27th June of 2019. QXY is an organic pollutant with potential persistence, bioaccumulation and this must not lower attention to this pollutant. To date the effects of this compound on development are not completely clear, thus this research tries to elucidate the adverse effects of QXY on zebrafish development. The study aims to understand the toxicological effects of QXY using the zebrafish as in vivo model and performing toxicological and molecular investigations. Considering the FET test results two sublethal concentrations, 0.4 mg/L and 0.8 mg/L were chosen for subsequent analysis. The expression of the gad1b, cyp19a1b, shank3a, nrxn1a and c-fos genes, involved in the development of the nervous system and the regulation of synaptic transmission, were evaluated. To confirm the potential neurotoxic effects of the treatment on the development of the central nervous system, both a transgenic Tg(neuroD:gfp ia50) line was used for confocal microscopy and Orange Acridine was used on wild type larvae to assess the presence of neuronal apoptosis. The results showed sub-lethal alterations, particularly affecting craniofacial and brain development highlighting as QXY may represent a possible endocrine disruptor able to induce severe cartilage defects, small head and tremor phenotype in zebrafish larvae and a strong modulation of the selected genes
“La mostra che (non) c’è”: l’esposizione del centro di ricerca interuniversitario MetArte nella Notte Europea dei Ricercatori 2023 di Teramo
No full textIl contributo presenta La Mostra che (non) c’è, primo esito del progetto di ricerca del Centro interuniversitario MetArte volto alla realizzazione di una mostra interamente virtuale e accessibile. L’iniziativa, realizzata durante la Notte Europea dei Ricercatori 2023, ha sperimentato l’uso congiunto di realtà virtuale, realtà aumentata, fotogrammetria e animazioni con Intelligenza Artificiale per la ricostruzione digitale di una selezione di sculture dell’antica collezione Cesi e del loro contesto storico. Il saggio illustra i presupposti scientifici dell’allestimento, le scelte tecnologiche e museografiche adottate, nonché le ricadute in termini di accessibilità, partecipazione e didattica museale. Nello studio, vengono inoltre delineate le prospettive future del progetto, che comprendono la ricostruzione completa dell’Antiquarium Cesi e lo sviluppo di interfacce aptiche per la fruizione inclusiva delle opere.This essay examines La Mostra che (non) c’è, the first stage of an ongoing research project by the Interuniversity Centre MetArte aimed at creating a fully virtual and accessible exhibition. Presented during the 2023 European Researchers’ Night in Teramo, the initiative experimented with virtual and augmented reality, photogrammetry, 3D scanning, and AI-based animated portraits to digitally reconstruct selected sculptures from the historic Cesi collection and their cultural context. The essay discusses the project’s scientific foundations, technological and museographic choices, and its impact on accessibility, user engagement, and museum education. It also outlines future developments, including the full virtual reconstruction of the Cesi Antiquarium and the implementation of haptic interfaces for inclusive multisensory interaction
THE USE OF QUADRATUS LUMBORUM (QL) BLOCK FOR ANALGESIA MANAGEMENT IN TIBETAN GOAT UNDERGOING EMERGENCY CESAREAN SECTION: A CASE REPORT
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On the Theory of Zm Linear Codes: the Zm Linear Preparata and Goethals Codes for m>2
No full textLet m ∈ N and Zm def/ ={0,1, ⋯, m-1} be the m ary alphabet. A Zm linear code of length n ∈ N is a submodule of the module (Zmn,+mod m, Zm, · bmod m). This paper presents a significant lower bound for the minimum Lee distance dLee (C), of any Zm linear code C. This bound facilitates, for a given minimum Lee distance, the efficient design of high information rate codes, which are computationally simple to implement using algebraic operations over fields of small cardinality. Two notable examples of such codes are provided, demonstrating the application of this bound. These families of codes generalize the Z4 linear Preparata and Goethals codes over the alphabet Zm, m=2l ∈ N with l ≥ 2. Specifically, for any m=2l>2 and h ∈ N, h odd, the generalized Zm linear Preparata codes have length n+1=2h, minimum Lee distance 6 and cardinality |C|=mn-h-1⌈ m / 4⌉h⌈ m / 8⌉. For the same parameters m, l, n, h ∈ N, the generalized Zm linear Goethals codes have length n+1=2h, minimum Lee distance 8 and cardinality |C|=mn-2 h-1⌈ m / 2⌉h⌈ m / 4⌉h⌈ m / 8⌉. Notably, both families of codes are less redundant and less complex than m-ary codes with the same minimum Lee distances obtained by applying the Gray mapping to l-bit subblocks of codewords from binary linear codes
Dalle strategie europee l'importanza di coniugare le politiche europee e le potenzialità dei territori; l'indispensabile cerniera tra bottom-up e top-down
No full textEvaluation of Listeria monocytogenes Dissemination in a Beef Steak Tartare Production Chain
No full textThis study evaluated the diffusion of Listeria monocytogenes (LM) in a beef steak tartare production chain, aiming to (1) evaluate Listeria spp. diffusion in finishing farms supplying beef cattle, (2) evaluate LM prevalence in carcasses, and (3) map LM diffusion in the production plant. A detection rate of 6/76 was observed in the farm, while carcasses after skinning and before refrigeration tested positive in 19/30 and 11/30, respectively. During tartare production, 57/154 meat and 35/191 environmental samples tested positive. A total of 114 LM isolates were characterized via a whole-genome sequencing approach. Five clonal complexes (CCs) and seven sequence types (STs) were identified, with CC9-ST580 being the most prevalent. Four clusters were identified from both the slaughtering and production phases. Genes related to resistance to fosfomycin, quinolones, sulfonamides, lincosamide, and tetracycline were detected. Two hypervirulent strains (CC6-ST6 and CC2-ST145), harboring a full-length inlA, several virulence genes, and stress islands, were detected. Stress Survival Islet 1 was found in almost all the isolates. The wide diffusion of LM in steak tartare requires the management of some critical phases of the production chain (mainly slaughtering); genomic methodologies could be useful in describing the circulation and virulence of LM strains