Environmental risk assessment of pesticide use in high-tech agriculture in a valley of northwest Mexico.

A level 1 Environmental Risk Assessment, based on the USEPA guidelines, was conducted using a risk quotient to evaluate the risk of pesticide use. The Culiacan Valley was chosen as study area because of its importance as agricultural zone in northwest Mexico. Records of pesticide applications allowed the critical contaminants to be identified, and a stratified random sampling was carried out to assess pesticide presence in agricultural soils.

Effect of infestation with Psoroptes cuniculi on reproduction and behavior of obese rabbit does (Oryctolagus cuniculi).

Parasites and obesity are health problems worldwide. Rabbits are production animals yielding one of the healthiest meats, also taking advantage of skin, hair, limbs and excreta. It is among the most frequent pets in some countries and widely used as animal model in research.

Integrating Proteomics and Metabolomics Approaches to Elucidate the Mechanism of Responses to Combined Stress in the Bell Pepper ().

Bell pepper plants are sensitive to environmental changes and are significantly affected by abiotic factors such as UV-B radiation and cold, which reduce their yield and production. Various approaches, including omics data integration, have been employed to understand the mechanisms by which this crop copes with abiotic stress. This study aimed to find metabolic changes in bell pepper stems caused by UV-B radiation and cold by integrating omic data.

Bioactivity of Fractions and Pure Compounds from (Ortega) Müll. Arg. Bark Extracts.

Medicines for chronic inflammation can cause gastric ulcers and hepatic and renal issues. An alternative treatment for chronic inflammation is that of natural bioactive compounds, which present low side effects. Extracts of (Ortega) Müll.

Response Surface Methodology for Optimization of Multiplex-PCR Protocols for Detection of TYLCV, TSWV and Molecular Markers: Analytical Performance Evaluation.

Molecular markers linked to disease resistance genes which affect economically important crops are of great interest. In the case of tomato, a major focus on resistance breeding to multiple fungal and viral pathogens such as (TYLCV), (TSWV) and f. sp.

Prevalence and Genomic Diversity of Recovered from River Water in a Major Agricultural Region in Northwestern Mexico.

is a leading cause of human gastrointestinal disease worldwide. Given that is persistent in aquatic environments, this study examined the prevalence, levels and genotypic diversity of isolates recovered from major rivers in an important agricultural region in northwestern Mexico. During a 13-month period, a total of 143 river water samples were collected and subjected to size-exclusion ultrafiltration, followed by enrichment, and selective media for isolation and quantitation.

egg extraction in NaOCl versus infectivity of inoculum on cucumber.

Extraction of eggs of spp. in sodium hypochlorite (NaOCl) is a helpful procedure to assess the population levels and to obtain inoculum. In this sense, laboratory and greenhouse experiments were done to evaluate the effect of the NaOCl concentration on the viability of eggs.

Optimization of PCR-based TYLCV molecular markers by response surface methodology.

Tomato (Solanum lycopersicum L.) is one of the most economically important vegetables worldwide. However, its production is affected by the tomato yellow leaf curl virus (TYLCV), causing the greatest devastation in the crop.

Metabolic plasticity of as adaptation strategy in river water.

The survival of in subtropical river water depends on genetic and metabolic reorganization for the expression of alternative metabolic pathways in response to starvation, which allows to use environmental carbon sources (C-sources). However, knowledge regarding the metabolic plasticity of serotypes for C-source utilization when exposed to these conditions remains unclear. The aim of this study was to evaluate the metabolic response and level of environmental C-source consumption by environmental (Oranienburg and Saintpaul) and clinical (Typhi) serotypes by comparing laboratory growth against exposure to river water conditions.

Enzyme-Catalyzed Production of Potato Galactan-Oligosaccharides and Its Optimization by Response Surface Methodology.

This work shows an optimized enzymatic hydrolysis of high molecular weight potato galactan yielding pectic galactan-oligosaccharides (PGOs), where endo-β-1,4-galactanase (galactanase) from and was used. For this, response surface methodology (RSM) by central composite design (CCD) was applied. The parameters varied were temperature (°C), pH, incubation time (min), and enzyme/substrate ratio (U/mg).

Point-of-use Unit Based on Gravity Ultrafiltration Removes Waterborne Gastrointestinal Pathogens from Untreated Water Sources in Rural Communities.

Objective: In developing countries, rural communities often face the lack of potable water infrastructure and must rely on untreated sources for drinking, which are often contaminated with waterborne pathogens. The use of home water treatment devices is seen as one means of reducing the risk of exposure to waterborne pathogens. The aim of this study was to evaluate the microbiological and physicochemical performance of a simple in-home point-of-use device based on gravity ultrafiltration through an ultrafilter membrane.

Development, Optimization, and Evaluation of a Duplex Droplet Digital PCR Assay To Quantify the T-nos/hmg Copy Number Ratio in Genetically Modified Maize.

Certified reference materials (CRMs) are required to guarantee the reliability of analytical measurements. The CRMs available in the field of genetically modified organisms (GMOs) are characterized using real-time polymerase chain reaction (qPCR). This technology has limited application, because of its dependence on a calibrant.