Assessing glyphosate and AMPA pesticides in the Ofanto River waters and sediments.

In the present study, we determined glyphosate (GPS) and aminomethylphosphonic acid (AMPA) in the water and sediments of the Ofanto River (Italy), evaluating their transport from the mouth to the sea. Sediments were collected twice in 2021 during low and high tide; waters were sampled on a seasonal basis. The results showed the prevalence of GPS and AMPA in the water with concentrations equal to 190 and 3053 ng/l, respectively. We also found GPS and AMPA in the sediments with values of 0.95 and 11.34 ng/g. In water, pesticides were detected in all seasons with peaks in concentrations during summer and spring. A significant positive correlation between the pesticides in the sediments and the water pH and a negative correlation with salinity was observed. An estimation of the average loads revealed a discharge of 64.11 kg/yr. of GPS and 958.37 kg/yr. of AMPA from the river to the marine environment.

Enantioseparation of agrochemicals by gas chromatography. Exploring columns based on cyclodextrin derivatives dissolved into polysiloxanes.

The main goal of this work is to expand the availability of chiral columns for the analysis of agrochemicals by gas chromatography. A broader offer of chiral stationary phases would allow shifting toward enantioselective analytical techniques environmentally more friendly for those compounds. We prepared seven chiral capillary columns based on derivatives of either, ß-cyclodextrin or γ-cyclodextrins dissolved at high concentrations, in two typical polysiloxanes with different polarities, demonstrating not only the significance of the chiral selector but also of the polymer solvent for achieving adequate enantioseparation of some agrochemicals. The enantiorecognition ability of each column was evaluated with 20 volatile and semivolatile agrochemicals, possessing one or two chiral centers. Besides, to elute more polar agrochemicals, as well as to enhance enantioselectivity, three derivatization procedures targeting the carboxyl and/or amine group were evaluated. The results revealed that the prepared column consisting of octakis(2,3-di-O-acetyl-6-O-tertbutyldimethylsilyl)-γ-cyclodextrin dissolved in (14%-cyanopropyl-phenyl)-86%-methyl-polysiloxane provides the broadest enantiorecognition capacity. This column allowed the enantioseparation of seventeen chiral agrochemicals, including metalaxyl, furalaxyl, and four imidazolinones, which were not enantioseparated in the remaining columns. To the best of our knowledge, glufosinate, fluorochloridone, fenarimol, furalaxyl, and four imidazolinones were enantioseparated by gas chromatography for the first time.

Assessment of the three-test genetic toxicology battery for groundwater metabolites.

The two-test in vitro battery for genotoxicity testing (Ames and micronucleus) has in the majority of cases replaced the three-test battery (as two-test plus mammalian cell gene mutation assay) for the routine testing of chemicals, pharmaceuticals, cosmetics, and agrochemical metabolites originating from food and feed as well as from water treatment. The guidance for testing agrochemical groundwater metabolites, however, still relies on the three-test battery. Data collated in this study from 18 plant protection and related materials highlights the disparity between the often negative Ames and in vitro chromosome aberration data and frequently positive in vitro mammalian cell gene mutation assays. Sixteen of the 18 collated materials with complete datasets were Ames negative, and overall had negative outcomes in in vitro chromosome damage tests (weight of evidence from multiple tests). Mammalian cell gene mutation assays (HPRT and/or mouse lymphoma assay (MLA)) were positive in at least one test for every material with this data. Where both MLA and HPRT tests were performed on the same material, the HPRT seemed to give fewer positive responses. In vivo follow-up tests included combinations of comet assays, unscheduled DNA synthesis, and transgenic rodent gene mutation assays, all gave negative outcomes. The inclusion of mammalian cell gene mutation assays in a three-test battery for groundwater metabolites is therefore not justified and leads to unnecessary in vivo follow-up testing.

Exposure to pesticides during pregnancy and the risk of neural tube defects: A systematic review.

Exposure to pesticides during pregnancy has been associated with several serious congenital malformations, such as neural tube defects, therefore, is a cause for concern in terms of human health. This review aims to gather information related to maternal exposure during pregnancy and the risk of triggering neural tube defects in the offspring. The search strategy for the studies followed the PRISMA guidelines. We conducted a systematic search in the Science Direct, PubMed, Cochrane Library, Embase, Scopus, and Web of Science databases for all epidemiological studies that sought to associate exposure to pesticides during embryonic development with the risk of neural tube defects (NTDs). The keywords used were "pesticide", "herbicide", "congenital" and "neural". Of the 229 articles, 8 eligible ones (7 case-control and 1 cross-sectional) evaluated pesticide exposure in pregnancy. Different methods were used, including analysis of biological samples and questionnaires. The pesticides studied included insecticides, herbicides, fungicides, and nematicides. Insecticides were the most studied, with variations in concentrations between tissues and studies. Distinct levels of pesticides have been detected in maternal serum, placenta, and umbilical cord. Models were statistically adjusted for confounding factors, such as smoking and dietary supplement intakes. Concentrations were measured in different exposure windows (periconception and prenatal), related to NTDs such as anencephaly and spina bifida. Different data collection techniques, types of biological samples, and exposure windows were used, which made comparison difficult. The main pesticides studied included DDT, DDE, HCH, and endosulfan. Maternal serum showed the highest concentrations of pesticides, but detection in placental tissue and umbilical cord confirms embryonic exposure. Confounding variables were adjusted for in the analysis of the articles, but they may still contribute to the risk of NTDs. All the studies analyzed pesticide exposure and the relationship with NTDs. However, a more standardized survey would be ideal for better comparisons.

Recent developments in fluorine-containing pesticides.

To ensure ongoing sustainability, the modern agrochemical industry is faced with enormous challenges. These arise from provision of high-quality food to increasing water use and environmental impact as well as a growing world population. The loss of previous agrochemicals due to consumer perception, changing grower needs and ever-changing regulatory requirements is higher than the number of active ingredients that are being introduced into the crop protection market. Therefore, the development of novel agrochemicals is essential to provide improved efficacy and environmental profiles. In this context, the introduction of fluorine atoms and fluorine-containing motifs into a molecule is an important method to influence its physicochemical properties. These include, for example, small difluoro- and trifluoromethyl, or trifluoromethoxy groups at aryl or heterocyclic aryl moieties but also fragments like 2,2,2-trifluoroethoxycarbonyl, trifluoromethylsulfonyl, trifluoroacetyl, as well as the so far unusal rest like heptafluoro-iso-propyl. This review gives an overview of recent developments of fluorine-containing pesticides launched over the past 7 years and describes a selection of current fluorine-containing development candidates. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Compatibilidad de un bioinsecticida a base de Beauveria bassiana con agroquímicos: efecto en la germinación y la actividad insecticida sobre Diatraea saccharalis

Los barrenadores del tallo del género de Diatraea spp. (Lepidoptera:Crambidae) han sido reconocidos por ser la plaga de mayor impacto en el cultivo de caña de azúcar, en el que causan importantes pérdidas económicas. Para su control, una cepa colombiana de Beauveria bassiana (Bals.) Vuill (aislamiento Bv062) que demostró alta virulencia frente a larvas de D. saccharalis (Fabricius), fue utilizada para el desarrollo de un bioinsecticida formulado como un concentrado emulsionable (CE). Con el fin de integrar este bioinsecticida en un esquema de manejo integrado de plagas, es necesario evaluar su compatibilidad con los agroquímicos utilizados comúnmente en el cultivo de caña de azúcar. Para tal fin se evaluó el efecto in vitro de 11 agroquímicos (fungicidas, insecticidas y herbicidas) sobre la germinación y actividad insecticida de conidios formulados. Inicialmente el CE y los agroquímicos fueron ajustados al doble de la concentración recomendada y mezclados en proporción 1:1, se incubaron durante dos horas, y se determinó el porcentaje de germinación. Los conidios expuestos a los agroquímicos fueron también purificados y utilizados para un bioen-sayo frente a larvas de segundo instar de D. saccharalis. El CE resultó ser compatible con los herbicidas e insecticidas evaluados, manteniendo una germinación y eficacia superior al 80%. Por el contrario, el CE fue incompatible con todos los fungicidas evaua-dos. Estos resultados permiten sugerir recomendaciones de aplicación del bioplaguicida a base de B. bassiana Bv062, junto con insecticidas y herbicidas empleados en el cultivo de caña, pero se recomienda no aplicarlo de manera simultánea con fungicidas como el benomil y del grupo de triazoles. Se recomienda validar estos resultados en condiciones de campo.

Sugarcane stem borers of the genus Diatraea spp. (Lepidoptera:Crambidae) have been recognized as the pest of the greatest impact on sugarcane crops causing significant economic losses. For its control, a colombian strain of Beauveria bassiana (Bals.) Vuill (code Bv062) that showed a high virulence against D. saccharalis (Fabricius) larvae was used for a biopesticide development, formulated as emulsifiable concentrate (EC). In order to include the EC into an integrated pest management (IPM) scheme, it is necessary to evaluate its compatibility with the agrochemicals commonly used in sugarcane crops. For this purpose, the in vitro effect of 11 agrochemicals (fungicides, insecticides and herbicides) on the germination and insecticidal activity of Bv062 formulated conidia was evaluated. Initially, the EC and agrochemicals were adjusted to double the recommended concentration and mixed in a 1:1 ratio. The mixes were incubated for two hours, and the germination percentage was calculated. The conidia exposed to the agrochemicals were also purified and used for a bioassay against second instar larvae of D. saccharalis. The EC was compatible with the herbicides and insecticides, maintaining germination and efficacy higher than 80%. In contrast, EC was incompatible with all the fungicides evaluated. These results allow us to suggest recommendations for the application of the biopesticide based on B. bassiana Bv062 with insecticides and herbicides used in sugarcane crops, but it is not recommended to apply it simultaneously with fungicides such as benomyl and the triazole group. It is recommended to validate these results under field conditions.

Foliar Application of Sulfur-Containing Compounds-Pros and Cons.

Sulfate is taken up from the soil solution by the root system; and inside the plant, it is assimilated to hydrogen sulfide, which in turn is converted to cysteine. Sulfate is also taken up by the leaves, when foliage is sprayed with solutions containing sulfate fertilizers. Moreover, several other sulfur (S)-containing compounds are provided through foliar application, including the S metabolites hydrogen sulfide, glutathione, cysteine, methionine, S-methylmethionine, and lipoic acid. However, S compounds that are not metabolites, such as thiourea and lignosulfonates, along with dimethyl sulfoxide and S-containing adjuvants, are provided by foliar application-these are the S-containing agrochemicals. In this review, we elaborate on the fate of these compounds after spraying foliage and on the rationale and the efficiency of such foliar applications. The foliar application of S-compounds in various combinations is an emerging area of agricultural usefulness. In the agricultural practice, the S-containing compounds are not applied alone in spray solutions and the need for proper combinations is of prime importance.

Abatement of pesticides residues in commercial farm soils by combined ozonation-solarization treatment.

The widespread use of pesticides against agricultural pest and diseases introduces these pollutants and their transformation products into soils. The toxicity and permanence of these substances make it necessary for the development of remediation strategies in order to mitigate contamination and to further protect consumers. This work was aimed to evaluate the applicability of ozonation-solarization technology in the degradation of pesticide residues in commercial farm soils. The trial was conducted in two exploitations devoted during decades to tomato cultivation under greenhouse and net systems. Treatments were carried out using a pipping network (both superficial and sub-superficial) that delivered ozone in gaseous state after covering the soil with gas-tight plastic film to avoid ozone leaks to atmosphere. Control soil treatments, without ozone exposure, were also conducted. After 40 days of treatment, mean degradation percentages of about 55-61% for both cultivation systems were obtained, when the reduction of these pollutants in the control soils was about 8-15%. Ozonation-solarization impact was also assessed by changes on soil physical-chemical properties. Results suggest that ozonation in combination with solarization technique could be considered as a feasible approach for the remediation of pesticide-polluted farm soils.

[Proof of life, proof of death: An anthropology of cancer among rural teachers exposed to agrochemicals in southeastern Cordoba (Argentina)]. / Pruebas de vida, pruebas de muerte: Antropología del cáncer entre docentes rurales expuestas a agroquímicos en el sudeste de Córdoba (Argentina).

This article presents the results of anthropological research on cancer among rural teachers occupationally exposed to agrochemicals. The study was carried out in the southeastern region of the province of Cordoba (Argentina), an area characterized by the large-scale production of transgenic crops intensively treated with agricultural pesticides. Regarding the methodology, fieldwork was conducted between 2019 and 2020 and included in-depth interviews with ten teachers, as well as observations of everyday situations in the towns where they live and work. Among the main findings, it was possible to identify a hegemonic narrative that naturalizes the existence of cancer and renders it invisible; despite this, it was possible to document the social suffering it caused among rural teachers. The article concludes that there is a need to bring visibility to these conditions in order to protect the health and wellbeing of this sector of Argentine teaching professionals.

En este artículo se presentan resultados de una investigación antropológica sobre el cáncer entre docentes rurales expuestas ocupacionalmente a agroquímicos. El estudio se desarrolló en la zona sudeste de la provincia de Córdoba (Argentina), caracterizada por la producción a gran escala de cultivos transgénicos tratados de manera intensiva con plaguicidas agrícolas. A nivel metodológico, el trabajo de campo realizado entre 2019 y 2020 incluyó entrevistas en profundidad a diez docentes y observación de situaciones de la vida cotidiana en los poblados donde vivían y trabajaban estas docentes. Se propone como hallazgo principal que existe una narrativa hegemónica que naturaliza e invisibiliza la existencia del cáncer pero que, a pesar de ella, es posible documentar los padecimientos individuales y sociales que esta enfermedad provoca entre las docentes rurales. Se concluye que es necesario visibilizar esos padecimientos para resguardar la salud y la vida de este sector de la docencia argentina.

Association of occupational exposure to pesticides with overweight in farmers in Southern Brazil.

INTRODUCTION: Exposure to pesticides may be related to overweight and associated comorbidities. The aim of this work was to evaluate occupational exposure to pesticides, overweight and associated comorbidities among farmers in Southern Brazil. METHODS: This cross-sectional study included a random sample of 257 farmers, living in the municipality of Mafra and Planalto, southern Brazil. Data on pesticide use and overweight prevalence from farmers were collected using an in-person interview questionnaire, followed by blood collection and biochemical analyses. RESULTS: Pesticide exposure was positively correlated with body mass index, waist circumference, waist-to-hip ratio, triglycerides and glucose levels, presence of hypertension and metabolic syndrome. Besides that, the fact of being exposed to pesticides represents a decrease of no protein thiol groups. Furthermore, the main pesticides used by farmers have hepatic toxicity. CONCLUSION: These findings suggest that exposure to pesticides may be associated with overweight and associated comorbidities. Further studies are required to validate our findings and elucidate the specific mechanisms by which these pollutants contribute to the development of overweight.

Associação entre intoxicação exógena e exposição ocupacional e ambiental de pacientes com câncer em Mato Grosso / Association between exogenous intoxication and occupational and environmental exposure of cancer patients in Mato Grosso

RESUMO O objetivo deste estudo foi investigar a associação entre características sociodemográficas relacionadas à exposição ambiental e ocupacional e o autorrelato de intoxicação de pacientes com diagnóstico de câncer em Mato Grosso, Brasil. Trata-se de um estudo transversal, com 998 pacientes com câncer atendidos em hospitais de referência do estado. A variável dependente foi obtida a partir do autorrelato de algum sintoma de intoxicação nos últimos 5 anos e se a intoxicação foi decorrente ou não do trabalho/ocupação. A associação entre características sociodemográficas relacionadas à intoxicação e à exposição ambiental e ocupacional e o autorrelato de intoxicação foi avaliada pelo teste exato de Fisher. Do total de entrevistados, 7,4% (IC95%: 6,0; 9,2) referiram intoxicação, sendo 2,3% dos casos (IC95%: 1,5; 3,4) decorrentes do trabalho. Os fatores associados ao autorrelato de intoxicação decorrente do trabalho foram ser do sexo masculino, ter escolaridade menor que 4 anos, sintoma de dor de cabeça, intoxicação por agrotóxico agrícola, por via respiratória e ter trabalhado com agrotóxicos, amianto, metais pesados e poeira industrial. Conclui-se que os indivíduos com maior exposição ocupacional aos agrotóxicos e a outros produtos químicos referiram maior ocorrência de intoxicações decorrentes do trabalho.

ABSTRACT The aim of this study was to investigate the association between sociodemographic characteristics, related to environmental and occupational exposure and self-report of intoxication in patients diagnosed with cancer in Mato Grosso, Brazil. This is a cross-sectional study, with 998 cancer patients seen at referral hospitals in the state. The dependent variable was obtained from the self-report of some intoxication symptom in the last 5 years and whether or not the intoxication was caused by work/occupation. The association between sociodemographic characteristics, related to intoxication and environmental and occupational exposure and self-report of intoxication was assessed by Fisher's exact test. Of all respondents, 7.4% (95%CI: 6.0; 9.2) reported intoxication, and 2.3% (95%CI: 1.5; 3.4) were work-related. Factors associated with self-reported work-related intoxication were being male, having less than 4 years of education, headache, intoxication by agricultural pesticides, by respiratory route and having worked with pesticides, asbestos, heavy metals and industrial dust. It was concluded that individuals with higher occupational exposure to pesticides and other chemicals reported higher occurrence of poisoning due to work.

Cargas de trabalho, precarização e Saúde do Trabalhador no agronegócio no semiárido do Nordeste brasileiro / Workloads, precariousness and worker health in agribusiness in the semi-arid region of Northeast Brazil

RESUMO A expansão do agronegócio no semiárido do nordeste do Brasil tem transformado agricultores camponeses em empregados de empresas de fruticultura, trazendo mudanças para seus modos de vida e trabalho. O estudo objetivou analisar condições, processos e cargas de trabalho no agronegócio de fruticultura. Realizou-se pesquisa qualitativa em que foram entrevistados empregados do agronegócio. As evidências foram produzidas e analisadas a partir de referenciais do campo Saúde do Trabalhador, fundamentando-se na teoria da determinação social do processo saúde-doença e adotando 'processos de trabalho' e 'cargas de trabalho' como categorias compreensivas das relações entre trabalho e saúde-doença. Observou-se que a produção agrícola se baseia na monocultura, no uso intensivo de mecanização e de agrotóxicos, e segue os moldes organizacionais da acumulação flexível e do taylorismo e fordismo. O mundo do trabalho vivido pelos empregados é marcado por alienação dos trabalhadores, precarização e intensificação do trabalho, que se concretizam em cargas de trabalho físicas, psíquicas, fisiológicas e, sobretudo, químicas. Estas advêm do uso intenso de agrotóxicos, presentes em todos os ambientes e processos de trabalho investigados. A proteção da saúde desses trabalhadores tensiona o Sistema Único de Saúde (SUS) a intensificar a vigilância em Saúde do Trabalhador, e a saúde coletiva, a incluir a problemática da saúde no debate público sobre os modelos agrícolas nacionais.

ABSTRACT The expansion of agribusiness in the semi-arid region of northeastern Brazil has transformed self-employed farmers into employees of fruit growing companies, bringing changes to their ways of life and work. The study aimed to analyze conditions, processes and workloads in the fruit growing agribusiness. A qualitative research was carried out in which agribusiness employees were interviewed. Evidence was produced and analyzed based on references from the Occupational Health field, based on the theory of social determination of the health-disease process and adopting 'work processes' and 'workloads' as comprehensive categories of the relationship between work and health-disease. It was observed that agricultural production is based on monoculture, on the intensive use of mechanization and pesticides, and follows the organizational molds of flexible accumulation and Taylorism/Fordism. The world of work experienced by employees is marked by alienation of workers, precariousness and intensification of work, which materialize in physical, psychic, physiological and, above all, chemical workloads. These come from the intense use of pesticides, present in all environments and work processes investigated. Protecting the health of these workers pushes the Unified Health System (SUS) to intensify worker's health surveillance, and collective health to include the issue of health in the public debate on national agricultural models.

Malformações fetais: distribuição temporal e sua associação com o uso de agrotóxicos no Rio Grande do Sul / Fetal malformations: temporal distribution and its association with the use of pesticides in Rio Grande do Sul

RESUMO O objetivo do presente estudo é investigar a distribuição temporal das taxas de malformações congênitas no estado do Rio Grande do Sul e sua associação com o uso de agrotóxicos. A pesquisa é de abordagem quantitativa, do tipo descritivo exploratória, realizada durante o primeiro semestre de 2022. O estudo foi conduzido através da associação da ocorrência de malformações com o uso de agrotóxicos, que foi calculada por meio dos Odds Ratios, sendo o Intervalo de Confiança (IC) adotado para as amostras de 95%. Houve variação nas taxas de malformações congênitas ao longo dos cinco períodos analisados. Os resultados indicam que há probabilidade da ocorrência de malformações no estado do Rio Grande do Sul estar associada ao uso de agrotóxicos. Todos os valores de variações percentuais anuais foram significativos e a presença de valores positivos indica tendência de aumento anual da incidência de malformações congênitas no Rio Grande do Sul. É evidente ainda que há variabilidade no número de casos notificados para todas as malformações incluídas no estudo ao longo do período analisado. Ressalta-se a importância de prevenção da exposição aos agrotóxicos, visto que o uso extensivo e inadequado desses está associado a efeitos deletérios na saúde humana.

ABSTRACT The aim of this study is to examine the temporal distribution of congenital malformation rates in Rio Grande do Sul and its potential correlation with pesticide use. This quantitative research adopts an exploratory descriptive approach and was conducted in the first half of 2022. The association between malformation occurrences and pesticide use was determined using Odds Ratios, with a 95% Confidence Interval (CI) applied to the sample. The study reveals variations in congenital malformation rates across the five analyzed periods. The findings suggest a likely association between malformation occurrences in Rio Grande do Sul and pesticide use. Notably, all annual percentage variation values were statistically significant, with positive values indicating an annual increase in congenital malformation incidences in the region. Moreover, the study highlights the presence of variability in the reported cases of all malformations examined throughout the analyzed period. This research underscores the importance of preventing exposure to pesticides, as their widespread and inappropriate usage is linked to detrimental effects on human health. Safeguarding against such exposure becomes crucial in mitigating the risks associated with congenital malformations.

Fertility loss: negative effects of environmental toxicants on oogenesis.

There has been a global decline in fertility rates, with ovulatory disorders emerging as the leading cause, contributing to a global lifetime infertility prevalence of 17.5%. Formation of the primordial follicle pool during early and further development of oocytes after puberty is crucial in determining female fertility and reproductive quality. However, the increasing exposure to environmental toxins (through occupational exposure and ubiquitous chemicals) in daily life is a growing concern; these toxins have been identified as significant risk factors for oogenesis in women. In light of this concern, this review aims to enhance our understanding of female reproductive system diseases and their implications. Specifically, we summarized and categorized the environmental toxins that can affect oogenesis. Here, we provide an overview of oogenesis, highlighting specific stages that may be susceptible to the influence of environmental toxins. Furthermore, we discuss the genetic and molecular mechanisms by which various environmental toxins, including metals, cigarette smoke, and agricultural and industrial toxins, affect female oogenesis. Raising awareness about the potential risks associated with toxin exposure is crucial. However, further research is needed to fully comprehend the mechanisms underlying these effects, including the identification of biomarkers to assess exposure levels and predict reproductive outcomes. By providing a comprehensive overview, this review aims to contribute to a better understanding of the impact of environmental toxins on female oogenesis and guide future research in this field.

Chronic kidney disease of unknown aetiology: A comprehensive review of a global public health problem.

The term chronic kidney disease of unknown aetiology (CKDu) refers to chronic kidney disease (CKD) in the absence of diabetes, long-standing hypertension, glomerulonephritis, obstructive uropathy or other apparent causes. An increasing number of CKDu cases have been reported from Latin America, Sri Lanka, India and others over the last two decades. These regional nephropathies share the following common attributes: (a) they affect low-to-middle income countries with tropical climates, (b) involve predominantly rural agricultural communities, (c) male predilection, (d) absence of significant proteinuria and hypertension, and (e) chronic tubulointerstitial nephritis on kidney biopsy. The current body of literature suggests that CKDu may be caused by heat stress, agrochemicals, contaminated drinking water or heavy metals; however, considerable regional disparities in CKDu research make it difficult to establish a common causal link. In the absence of a definite aetiology, specific preventive and therapeutic interventions are lacking. Improvement of working conditions of farmers and labourers, provision of safe drinking water and changes in agricultural practices are some of the measures that have been implemented; however, there is lack of data to assess their impact on the incidence and progression of CKDu. There is a need for a concerted global effort to address the current knowledge gaps, and to develop effective and sustainable strategies to tackle this devastating disease.

Rhizosphere bacteria show a stronger response to antibiotic-based biopesticide than to conventional pesticides.

The plant microbiota can substantially contribute to various functions related to host health, fitness, and productivity. Therefore, maintaining the integrity of the microbiota is beginning to be seen as a crucial factor in modern agriculture. Here, we evaluated the effects of two chemical pesticides (azoxystrobin and carbendazim) and an antibiotic-based biopesticide (wuyiencin) on the rhizosphere microbiome of tomato plants. It was found that all treatments resulted in changes in the bacterial community structure to varying degrees. The most pronounced changes were observed with the biopesticide, which resulted in an enrichment of Streptomyces in the microbiome. In contrast, the relative abundance of Actinobacteria decreased in samples that were treated with low and high dosages of carbendazim. Clostridia were enriched after the applications of azoxystrobin and wuyiencin. When functioning of the microbiome was assessed, it was shown that genes encoding multidrug efflux pumps and ABC transporters related to nutrient uptake were enriched. This enrichment is likely to overcome potentially negative effects linked to the exposure to the employed substances. The study provides new insights into the potential of different pesticides to modulate native plant microbiomes, and thus highlights the importance to include such evaluations when new active agents are developed.

Recent Development of Versatile Polyphenol Platforms in Fertilizers and Pesticides.

The utilization of agrochemicals has been of significant importance in both the cultivation and disease control of crops. The development of advanced agrochemicals that are both effective and eco-friendly has been made possible through the use of slow delivery platforms and surface modification technology. Inspired by the nature of mussel adhesion, polyphenolic platforms with versatile properties have been extensively employed in various applications, including agro-food, owing to their ability to flexibly modulate chemical and surface characteristics. This mini-review highlights the development of polyphenols, such as polydopamine and tannic acid, in the field of agrochemicals, particularly in the design and production of novel fertilizers and pesticides. The synthetic approach, active ingredient release performance, foliar adhesion, and design of polyphenolic-based agrochemicals in recent years have been discussed to explore their potential applications and limitations. We believe that utilizing versatile polyphenolic materials and their characteristics for agro-food applications can provide innovative ideas and suggestions for developing novel agrochemicals suitable for modern and sustainable horticulture and agriculture.

Acute Presentation of Mesoamerican Nephropathy in an Agricultural Worker From Panama.

Mesoamerican nephropathy (MeN) is Central America's growing endemic renal disorder. No single cause is established, but many risk factors are hypothesized, such as young and medium-aged adults, male sex, work environment, heavy metals and agrochemicals exposure, occupational heat stress, nephrotoxic drug use, and low socioeconomic status. The diagnosis is confirmed by renal biopsy with chronic tubular atrophy and tubulointerstitial nephritis. If biopsies are unavailable, MeN is clinically suspected in patients residing in hotspot regions with a reduced estimated glomerular filtration rate (eGFR) and the absence of defining etiology, such as hypertension, diabetes, or glomerulonephritis. Currently, there is no specific treatment for which early diagnosis and intervention on risk factors is the primary strategy to improve prognosis. We report a case of a young male with agricultural labor exposure who presented with acute abdominal pain, back pain, and renal dysfunction that later progressed to chronic kidney disease (CKD) due to MeN. This case is significant because, although MeN is well-described in the literature, few cases of acute presentation have been documented.

Eukaryotic splicing machinery in the plant-virus battleground.

Plant virual infections are mainly caused by plant-virus parasitism which affects ecological communities. Some viruses are highly pathogen specific that can infect only specific plants, while some can cause widespread harm, such as tobacco mosaic virus (TMV) and cucumber mosaic virus (CMV). After a virus infects the host, undergoes a series of harmful effects, including the destruction of host cell membrane receptors, changes in cell membrane components, cell fusion, and the production of neoantigens on the cell surface. Therefore, competition between the host and the virus arises. The virus starts gaining control of critical cellular functions of the host cells and ultimately affects the fate of the targeted host plants. Among these critical cellular processes, alternative splicing (AS) is an essential posttranscriptional regulation process in RNA maturation, which amplify host protein diversity and manipulates transcript abundance in response to plant pathogens. AS is widespread in nearly all human genes and critical in regulating animal-virus interactions. In particular, an animal virus can hijack the host splicing machinery to re-organize its compartments for propagation. Changes in AS are known to cause human disease, and various AS events have been reported to regulate tissue specificity, development, tumour proliferation, and multi-functionality. However, the mechanisms underlying plant-virus interactions are poorly understood. Here, we summarize the current understanding of how viruses interact with their plant hosts compared with humans, analyze currently used and putative candidate agrochemicals to treat plant-viral infections, and finally discussed the potential research hotspots in the future. This article is categorized under: RNA Processing > Splicing Mechanisms RNA Processing > Splicing Regulation/Alternative Splicing.

Relationships of perception of health risks by use of pesticides: a man-environment look.

The use of agricultural pesticides is increasingly linked to public health problems and negative impacts on the environment. Furthermore, Brazilian environmental agencies lack protective actions. Our objective in this study was to analyze the process that leads to the perception of the risks associated with the use of pesticides in the riverside agricultural communities of the San Francisco Valley in northeastern Brazil. We conducted a qualitative literature review, applying the Constructivist Grounded Theory to the analysis of published scientific articles. The elements of the perception process that we identified are (1) the environment; (2) conditioning factors; (3) perception of the human body; (4) memory; (5) socio-cognitive processing; (6) automatic response; (7) decision-making process; and (8) behavior. Each of these elements and their relationships indicate the location of the causes of inadequate perception, and thus guide potential solutions.