Environmental factors that modulate the release and transport of airborne urediniospores Hemileia vastatrix (Berk. & amp; Broome) in coffee crops in Veracruz M éxico
AbstractThe coffee leaf rust, Hemileia vastatrix, is the most destructive coffee-growing disease and the most important economically. More aggressive outbreaks of the disease were recently reported worldwide, including in Mexico, where coffee production showed a 40% decrease. This work aimed to determine the environmental conditions that favor release and air transport of the H. vastatrix urediniospores in coffee crops in Veracruz. The monitoring of airborne coffee leaf rust urediniospores was performed using three types of aerobiological traps at different heights: Hirst Spore Trap (HST, 1.5 m), Passive Spore Trap (...
Source: Aerobiologia - February 1, 2022 Category: Environmental Health Source Type: research
Five ways to define a pollen season: exploring congruence and disparity in its attributes and their long-term trends
AbstractWe applied five sets of criteria for pollen season (PS) definition, which are associated with the ‘clinical’, ‘grains’, ‘logistic’, ‘moving average’ and ‘percentage’ methods, on a 30-year time series of daily airborne pollen concentration values of Cupressaceae (cypress family), Oleaceae (olive family) and Poaceae (grass family), from Thessaloniki, Greece. These methods could identify a pollen season for more than 90% of the study period for all three taxa, except for the clinical that identified less than 40% for Oleaceae. The estimated values of the PS start, end, and duration varied largely, ...
Source: Aerobiologia - January 29, 2022 Category: Environmental Health Source Type: research
Application of the HYSPLIT model for birch pollen modelling in Poland
AbstractIn this work, the HYSPLIT model was used to reproduce birch pollen concentrations in Poland for the years 2015 and 2016, where there was significant variation in terms of pollen concentrations and start/end dates of the pollen season. The analysis of pollen observations showed that the seasonal pollen integral (SPIn) was low in 2015 with a shorter season compared to 2016. In 2016, SPIn was unusually high. The HYSPLIT model simulation, with a one-hour temporal resolution, was conducted during the birch pollen season (from March to May) for 2015 and 2016. Meteorological data were obtained from the WRF model. The birc...
Source: Aerobiologia - January 29, 2022 Category: Environmental Health Source Type: research
Five ways to define a pollen season: exploring congruence and disparity in its attributes and their long-term trends
AbstractWe applied five sets of criteria for pollen season (PS) definition, which are associated with the ‘clinical’, ‘grains’, ‘logistic’, ‘moving average’ and ‘percentage’ methods, on a 30-year time series of daily airborne pollen concentration values of Cupressaceae (cypress family), Oleaceae (olive family) and Poaceae (grass family), from Thessaloniki, Greece. These methods could identify a pollen season for more than 90% of the study period for all three taxa, except for the clinical that identified less than 40% for Oleaceae. The estimated values of the PS start, end, and duration varied largely, ...
Source: Aerobiologia - January 29, 2022 Category: Environmental Health Source Type: research
Bioaerosol vertical fungal spores profile in Minas Gerais State, Brazil
AbstractPrimary biological aerosol particles (PBAPs) are involved in multiple phenomena ranging from seasonal allergies to pandemic diseases. Furthermore, PBAPs that act as ice nuclei, might interact with cloud physics affecting the formation of hail and, potentially, causing damage to agriculture. These latter dynamics are still unclear, especially due to the lack of knowledge about PBAPs concentration and emission rates. Here we characterized the fungal aerobiology of Arceburgo, Minas Gerais State, Brazil, through ground level and airborne sampling of PBAPs via a hot-air balloon. Total and cultivable fungal spores were c...
Source: Aerobiologia - January 28, 2022 Category: Environmental Health Source Type: research
Microbial composition of bioaerosols in indoor wastewater treatment plants
This study offers a comprehensive indoor-air microbiota description of waste water treatment plants —concluding a significant potential occupational risk. (Source: Aerobiologia)
Source: Aerobiologia - January 8, 2022 Category: Environmental Health Source Type: research
Seasonal pattern of Alternaria airborne spores in Santiago de Chile, Chile (2005 –2015 period): first Alternaria spore calendar
AbstractSinceAlternaria is an important aeroallergen in temperate areas of the world, this study was undertaken in order to provide the first results obtained about the seasonal regimen ofAlternaria airborne spores in the atmosphere of Santiago de Chile (Chile), for a period of 10 years (2005–2015), which has led to the construction of the first calendar for the city. Furthermore, the periods of maximum presence of these particles in the air were determined together with those days in which the threshold levels set up for the development of clinical symptoms were reached and/or surpassed. The annual spore integral vari...
Source: Aerobiologia - January 8, 2022 Category: Environmental Health Source Type: research
Microbial composition of bioaerosols in indoor wastewater treatment plants
This study offers a comprehensive indoor-air microbiota description of waste water treatment plants —concluding a significant potential occupational risk. (Source: Aerobiologia)
Source: Aerobiologia - January 8, 2022 Category: Environmental Health Source Type: research
Seasonal pattern of Alternaria airborne spores in Santiago de Chile, Chile (2005 –2015 period): first Alternaria spore calendar
AbstractSinceAlternaria is an important aeroallergen in temperate areas of the world, this study was undertaken in order to provide the first results obtained about the seasonal regimen ofAlternaria airborne spores in the atmosphere of Santiago de Chile (Chile), for a period of 10 years (2005–2015), which has led to the construction of the first calendar for the city. Furthermore, the periods of maximum presence of these particles in the air were determined together with those days in which the threshold levels set up for the development of clinical symptoms were reached and/or surpassed. The annual spore integral vari...
Source: Aerobiologia - January 8, 2022 Category: Environmental Health Source Type: research
The course of birch pollen seasons in Sosnowiec (Southern Poland) in 1997 –2020 in relation to meteorological conditions
AbstractThe study's main objective was to specify the extent to which weather conditions were related to the course of birch pollen seasons in the years 1997 –2020. The impact of atmospheric conditions on the daily concentrations of birch pollen grains, the Annual pollen integral (APIn), and the length of pollen seasons were studied. The dependency between each meteorological condition and various features of the birch pollen season was determined usin g Spearman’s rho correlation, the Kruskal–Wallis test, and cluster analysis with the k-means method. It has been shown that the duration of sunshine and average air te...
Source: Aerobiologia - December 17, 2021 Category: Environmental Health Source Type: research
Comparison of the characterization of allergenic protein 3 (Pla a3) released from Platanus pollen grains collected in Shanghai during the spring of 2019 and 2020
AbstractDue to the COVID-19 pandemic in early 2020, large-scale industrial production has been stagnant and reduced, the urban air quality has been greatly improved. It provided an excellent opportunity to explore the effects of air pollutants on the sensitization of pollen allergen proteins in the environment.Platanus pollen grains sampled in the spring of 2019 and 2020 were used for detailed characterization and analysis. Scanning electron microscopy, Fourier transform infrared, X-ray spectroscopy (XPS), trypan blue staining, and western blot analysis were employed to characterizePlatanus pollen protein released from pol...
Source: Aerobiologia - November 27, 2021 Category: Environmental Health Source Type: research
