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Apangu GP, Frisk CA, Petch GM, Hanson M, Skjøth CA. Unmanaged grasslands are a reservoir of Alternaria and other important fungal species with differing emission patterns. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122416. [PMID: 39255575 DOI: 10.1016/j.jenvman.2024.122416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 08/31/2024] [Accepted: 09/02/2024] [Indexed: 09/12/2024]
Abstract
Alternaria is a ubiquitous fungal genus with many allergenic and pathogenic species inhabiting grasslands. We hypothesise that grasslands (natural/man-made) host a diversity of fungal species whose spores have varying emission patterns. Therefore, the purpose of this study was to examine the potential of grasslands for emission, diversity and composition of Alternaria and other fungal species. To test the hypothesis, Hirst-type and multi-vial Cyclone samplers collected air samples from two grassland sites (unmanaged and managed) and a non-grassland site at Lakeside campus of the University of Worcester, United Kingdom for the period May to September 2019. The unmanaged grassland was originally planted with grasses and left uncut for three years. The managed grassland was a roadside verge that was cut once every year, typically after most grasses have flowered. We used optical microscopy and Illumina MiSeq sequencing to investigate the emission, abundance, diversity and composition of the fungal spores from each site alongside meteorological variables. Kruskal-Wallis and Wilcoxon tests examined differences in the bi-hourly Alternaria concentrations between the sites. Shannon's and Simpson's Index determined the diversity of the fungal spores between the unmanaged and non-grassland sites. The results showed that grasslands are a strong source of Alternaria spores with considerably higher numbers of clinically important days compared with the non-grassland site. The managed grassland varied in Alternaria spore emission pattern from the unmanaged, probably due to differences in environmental variables and cutting frequency. The unmanaged grassland and non-grassland sites showed a high diversity of fungi including Alternaria, Cladosporium, Ascochyta, Botrytis and Aureobasidium. Overall, the study shows that grasslands are a strong source of fungal spores with allergenic and pathogenic potential and have varying emission patterns, compared with nearby urban areas where monitoring stations are located. This information is useful for atmospheric modelling of airborne fungal spore sources and has implications for allergy sufferers in particular.
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Affiliation(s)
- Godfrey Philliam Apangu
- University of Worcester, School of Science and the Environment, Henwick Grove, WR2 6AJ, Worcester, United Kingdom.
| | - Carl Alexander Frisk
- University of Worcester, School of Science and the Environment, Henwick Grove, WR2 6AJ, Worcester, United Kingdom
| | - Geoffrey M Petch
- University of Worcester, School of Science and the Environment, Henwick Grove, WR2 6AJ, Worcester, United Kingdom
| | - Mary Hanson
- University of Worcester, School of Science and the Environment, Henwick Grove, WR2 6AJ, Worcester, United Kingdom
| | - Carsten Ambelas Skjøth
- University of Worcester, School of Science and the Environment, Henwick Grove, WR2 6AJ, Worcester, United Kingdom
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2
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Grewling Ł, Ribeiro H, Antunes C, Apangu GP, Çelenk S, Costa A, Eguiluz-Gracia I, Galveias A, Gonzalez Roldan N, Lika M, Magyar D, Martinez-Bracero M, Ørby P, O'Connor D, Penha AM, Pereira S, Pérez-Badia R, Rodinkova V, Xhetani M, Šauliene I, Skjøth CA. Outdoor airborne allergens: Characterization, behavior and monitoring in Europe. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167042. [PMID: 37709071 DOI: 10.1016/j.scitotenv.2023.167042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/23/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
Aeroallergens or inhalant allergens, are proteins dispersed through the air and have the potential to induce allergic conditions such as rhinitis, conjunctivitis, and asthma. Outdoor aeroallergens are found predominantly in pollen grains and fungal spores, which are allergen carriers. Aeroallergens from pollen and fungi have seasonal emission patterns that correlate with plant pollination and fungal sporulation and are strongly associated with atmospheric weather conditions. They are released when allergen carriers come in contact with the respiratory system, e.g. the nasal mucosa. In addition, due to the rupture of allergen carriers, airborne allergen molecules may be released directly into the air in the form of micronic and submicronic particles (cytoplasmic debris, cell wall fragments, droplets etc.) or adhered onto other airborne particulate matter. Therefore, aeroallergen detection strategies must consider, in addition to the allergen carriers, the allergen molecules themselves. This review article aims to present the current knowledge on inhalant allergens in the outdoor environment, their structure, localization, and factors affecting their production, transformation, release or degradation. In addition, methods for collecting and quantifying aeroallergens are listed and thoroughly discussed. Finally, the knowledge gaps, challenges and implications associated with aeroallergen analysis are described.
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Affiliation(s)
- Łukasz Grewling
- Laboratory of Aerobiology, Department of Systematic and Environmental Botany, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland.
| | - Helena Ribeiro
- Department of Geosciences, Environment and Spatial Plannings of the Faculty of Sciences, University of Porto and Earth Sciences Institute (ICT), Portugal
| | - Celia Antunes
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | | | - Sevcan Çelenk
- Department of Biology, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey
| | - Ana Costa
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | - Ibon Eguiluz-Gracia
- Allergy Unit, Hospital Regional Universitario de Malaga, Malaga 29010, Spain
| | - Ana Galveias
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | - Nestor Gonzalez Roldan
- Group of Biofunctional Metabolites and Structures, Priority Research Area Chronic Lung Diseases, Research Center Borstel, Leibniz Lung Center, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN), Borstel, Germany; Pollen Laboratory, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Mirela Lika
- Department of Biology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
| | - Donát Magyar
- National Center for Public Health and Pharmacy, Budapest, Hungary
| | | | - Pia Ørby
- Department of Environmental Science, Danish Big Data Centre for Environment and Health (BERTHA) Aarhus University, Aarhus, Denmark
| | - David O'Connor
- School of Chemical Sciences, Dublin City University, Dublin D09 E432, Ireland
| | - Alexandra Marchã Penha
- Water Laboratory, School of Sciences and Technology, ICT-Institute of Earth Sciences, IIFA, University of Évora. 7000-671 Évora, Portugal
| | - Sónia Pereira
- Department of Geosciences, Environment and Spatial Plannings of the Faculty of Sciences, University of Porto and Earth Sciences Institute (ICT), Portugal
| | - Rosa Pérez-Badia
- Institute of Environmental Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain
| | | | - Merita Xhetani
- Department of Biology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
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3
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Rodríguez-Fernández A, Blanco-Alegre C, Vega-Maray AM, Valencia-Barrera RM, Molnár T, Fernández-González D. Effect of prevailing winds and land use on Alternaria airborne spore load. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 332:117414. [PMID: 36731420 DOI: 10.1016/j.jenvman.2023.117414] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/11/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
Alternaria spores are a common component of the bioaerosol. Many Alternaria species are plant pathogens, and their conidia are catalogued as important aeroallergens. Several aerobiological studies showing a strong relationship between concentrations of airborne spore and meteorological parameters have consequently been developed. However, the Alternaria airborne load variation has not been thoroughly investigated because it is difficult to assess their sources, as they are a very common and widely established phytopathogen. The objective of this study is to estimate the impact of vegetation and land uses as potential sources on airborne spore load and to know their influence, particularly, in cases of long-medium distance transport. The daily airborne spore concentration was studied over a 5-year period in León and Valladolid, two localities of Castilla y León (Spain), with differences in their bioclimatic and land use aspects. Moreover, the land use analysis carried out within a 30 km radius of each monitoring station was combined with air mass data in order to search for potential emission sources. The results showed a great spatial variation between the two areas, which are relatively close to each other. The fact that the spore concentrations recorded in Valladolid were higher than those in León was owing to prevailing winds originating from large areas covered by cereal crops, especially during the harvest period. However, the prevailing winds in León came from areas dominated by forest and shrubland, which explains the low airborne spore load, since the main Alternaria sources were the grasslands located next to the trap. Furthermore, the risk days in this location presented an unusual wind direction. This study reveals the importance of land cover and wind speed and direction data for establishing potential airborne routes of spore transport in order to improve the Alternaria forecasting models. The importance of conducting Alternaria aerobiological studies at a local level is also highlighted.
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Affiliation(s)
| | | | - Ana María Vega-Maray
- Department of Biodiversity and Environmental Management (Botany), University of León, León, Spain
| | | | - Tibor Molnár
- Institute of Agricultural Sciences and Rural Development. Szent István University, Szarvas, Hungary
| | - Delia Fernández-González
- Department of Biodiversity and Environmental Management (Botany), University of León, León, Spain; Institute of Atmospheric Sciences and Climate-CNR, Bologna, Italy
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4
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Vélez-Pereira AM, De Linares C, Belmonte J. Aerobiological modelling II: A review of long-range transport models. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 845:157351. [PMID: 35842165 DOI: 10.1016/j.scitotenv.2022.157351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/07/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
The long-range atmospheric transport models of pollen and fungal spores require four modules for their development: (i) Meteorological module: which contain the meteorological model, and it can be coupled to transport model with the same output configuration (spatio-temporal resolution), or uncoupled does not necessarily have the same output parameters. (ii) Emission module: settles the mass fluxes of bioaerosol, it can be done with a complex parameterization integrating phenological models and meteorological factors or by a simple emission factor. (iii) Sources of emission module, specifically refers to forestry/agronomy maps or, in the case of herbs and fungi, to potential geographical areas of emission. Obtaining the highest possible resolution in these maps allows establishing greater reliability in the modelling. (iv) Atmospheric transport module, with its respective established output parameters. The review and subsequent analysis presented in this article, were performed on published electronic scientific articles from 1998 to 2016. Of a total of 101 models applied found in 64 articles, 33 % performed forward modelling (using 15 different models) and 67 % made backward modelling (with three different models). The 88 % of the cases were applied to pollen (13 taxa) and 12 % to fungal spores (3 taxa). Regarding the emission module, 22 % used parametrization (four different parameters) and 10 % emission factors. The most used transport model was HYSPLIT (59 %: 56 % backward and 3 % forward) following by SILAM 10 % (all forward). Main conclusions were that the models of long-range transport of pollen and fungal spores had high technical-scientific requirements to development and that the major limitations were the establishment of the flow and the source of the emission.
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Affiliation(s)
- Andrés M Vélez-Pereira
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Arica, Chile; Laboratorio de Investigaciones Medioambientales de Zonas Áridas, Facultad de Ingeniería, Universidad de Tarapacá, Arica, Chile.
| | | | - Jordina Belmonte
- Institute of Environmental Science and Technology, (ICTA-UAB), Universitat Autònoma de Barcelona, Spain; Department of Animal Biology, Plant Biology and Ecology, Universitat Autònoma de Barcelona, Spain
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5
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Hanson MC, Petch GM, Ottosen TB, Skjøth CA. Climate change impact on fungi in the atmospheric microbiome. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 830:154491. [PMID: 35283127 DOI: 10.1016/j.scitotenv.2022.154491] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/13/2022] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
The atmospheric microbiome is one of the least studied microbiomes of our planet. One of the most abundant, diverse and impactful parts of this microbiome is arguably fungal spores. They can be very potent outdoor aeroallergens and pathogens, causing an enormous socio-economic burden on health services and annual damages to crops costing billions of Euros. We find through hypothesis testing that an expected warmer and drier climate has a dramatic impact on the atmospheric microbiome, conceivably through alteration of the hydrological cycle impacting agricultural systems, with significant differences in leaf wetness between years (p-value <0.05). The data were measured via high-throughput sequencing analysis using the DNA barcode marker, ITS2. This was complemented by remote sensing analysis of land cover and dry matter productivity based on the Sentinel satellites, on-site detection of atmospheric and vegetation variables, GIS analysis, harvesting analysis and footprint modelling on trajectory clusters using the atmospheric transport model HYSPLIT. We find the seasonal spore composition varies between rural and urban zones reflecting both human activities (e.g. harvest), type and status of the vegetation and the prevailing climate rather than mesoscale atmospheric transport. We find that crop harvesting governs the composition of the atmospheric microbiome through a clear distinction between harvest and post-harvest beta-diversity by PERMANOVA on Bray-Curtis dissimilarity (p-value <0.05). Land cover impacted significantly by two-way ANOVA (p-value <0.05), while there was minimal impact from air mass transport over the 3 years. The hypothesis suggests that the fungal spore composition will change dramatically due to climate change, an until now unforeseen effect affecting both food security, human health and the atmospheric hydrological cycle. Consequently the management of crop diseases and impact on human health through aeroallergen exposure need to consider the timing of crop treatments and land management, including post harvest, to minimize exposure of aeroallergens and pathogens.
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Affiliation(s)
- M C Hanson
- School of Science and the Environment, University of Worcester, Henwick Grove, Worcester WR2 6AJ, UK.
| | - G M Petch
- School of Science and the Environment, University of Worcester, Henwick Grove, Worcester WR2 6AJ, UK
| | - T-B Ottosen
- School of Science and the Environment, University of Worcester, Henwick Grove, Worcester WR2 6AJ, UK; Department of Air and Sensor Technology, Danish Technological Institute, Kongsvang Allé 29, DK-8000 Aarhus C, Denmark
| | - C A Skjøth
- School of Science and the Environment, University of Worcester, Henwick Grove, Worcester WR2 6AJ, UK.
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6
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Picornell A, Rojo J, Trigo MM, Ruiz-Mata R, Lara B, Romero-Morte J, Serrano-García A, Pérez-Badia R, Gutiérrez-Bustillo M, Cervigón-Morales P, Ferencova Z, Morales-González J, Sánchez-Reyes E, Fuentes-Antón S, Sánchez-Sánchez J, Dávila I, Oteros J, Martínez-Bracero M, Galán C, García-Mozo H, Alcázar P, Fernández S, González-Alonso M, Robles E, de Zabalza AP, Ariño AH, Recio M. Environmental drivers of the seasonal exposure to airborne Alternaria spores in Spain. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153596. [PMID: 35122844 DOI: 10.1016/j.scitotenv.2022.153596] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/12/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Alternaria conidia have high allergenic potential and they can trigger important respiratory diseases. Due to that and to their extensive detection period, airborne Alternaria spores are considered as a relevant airborne allergenic particle. Several studies have been developed in order to predict the human exposure to this aeroallergen and to prevent their negative effects on sensitive population. These studies revealed that some sampling locations usually have just one single Alternaria spore season while other locations generally have two seasons within the same year. However, the reasons of these two different seasonal patterns remain unclear. To understand them better, the present study was carried out in order to determine if there are any weather conditions that influence these different behaviours at different sampling locations. With this purpose, the airborne Alternaria spore concentrations of 18 sampling locations in a wide range of latitudinal, altitudinal and climate ranges of Spain were studied. The aerobiological samples were obtained by means of Hirst-Type volumetric pollen traps, and the seasonality of the airborne Alternaria spores were analysed. The optimal weather conditions for spore production were studied, and the main weather factor affecting Alternaria spore seasonality were analysed by means of random forests and regression trees. The results showed that the temperature was the most relevant variable for the Alternaria spore dispersion and it influenced both the spore integrals and their seasonality. The water availability was also a very significant variable. Warmer sampling locations generally have a longer period of Alternaria spore detection. However, the spore production declines during the summer when the temperatures are extremely warm, what splits the favourable period for Alternaria spore production and dispersion into two separate ones, detected as two Alternaria spore seasons within the same year.
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Affiliation(s)
- Antonio Picornell
- Department of Botany and Plant Physiology, University of Malaga, Campus de Teatinos s/n, E-29071, Malaga, Spain.
| | - Jesús Rojo
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, Complutense University of Madrid, Madrid, Spain; University of Castilla-La Mancha, Institute of Environmental Sciences (Botany), Toledo, Spain
| | - M Mar Trigo
- Department of Botany and Plant Physiology, University of Malaga, Campus de Teatinos s/n, E-29071, Malaga, Spain
| | - Rocío Ruiz-Mata
- Department of Botany and Plant Physiology, University of Malaga, Campus de Teatinos s/n, E-29071, Malaga, Spain
| | - Beatriz Lara
- University of Castilla-La Mancha, Institute of Environmental Sciences (Botany), Toledo, Spain
| | - Jorge Romero-Morte
- University of Castilla-La Mancha, Institute of Environmental Sciences (Botany), Toledo, Spain
| | - Alicia Serrano-García
- University of Castilla-La Mancha, Institute of Environmental Sciences (Botany), Toledo, Spain
| | - Rosa Pérez-Badia
- University of Castilla-La Mancha, Institute of Environmental Sciences (Botany), Toledo, Spain
| | - Montserrat Gutiérrez-Bustillo
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, Complutense University of Madrid, Madrid, Spain
| | - Patricia Cervigón-Morales
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, Complutense University of Madrid, Madrid, Spain
| | - Zuzana Ferencova
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, Complutense University of Madrid, Madrid, Spain
| | - Julia Morales-González
- Department of Vegetal Biology and Ecology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Estefanía Sánchez-Reyes
- Department of Botany and Plant Physiology, Faculty of Pharmacy, University of Salamanca, Licenciado Méndez Nieto s/n, 37007, Salamanca, Spain; Institute for Agribiotechnology Research (CIALE), Universidad de Salamanca, Río Duero 12, 37185 Villamayor, Salamanca, Spain
| | - Sergio Fuentes-Antón
- Department of Mathematics and Science Education, Universidad de Salamanca, Paseo de Canalejas 169, 37008, Salamanca, Spain
| | - José Sánchez-Sánchez
- Department of Botany and Plant Physiology, Faculty of Pharmacy, University of Salamanca, Licenciado Méndez Nieto s/n, 37007, Salamanca, Spain; Institute for Agribiotechnology Research (CIALE), Universidad de Salamanca, Río Duero 12, 37185 Villamayor, Salamanca, Spain
| | - Ignacio Dávila
- Department of Biomedical and Diagnostic Sciences, Faculty of Medicine, Universidad de Salamanca, Alfonso X El Sabio s/n, 37007, Salamanca, Spain; Servicio de Alergia, Hospital Universitario de Salamanca, Salamanca, Spain; Instituto de Investigación Biomédica de Salamanca, Salamanca, Spain
| | - Jose Oteros
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Cordoba, Spain; Andalusian Inter-University Institute for Earth System IISTA, University of Cordoba, Spain
| | - Moisés Martínez-Bracero
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Cordoba, Spain; Andalusian Inter-University Institute for Earth System IISTA, University of Cordoba, Spain; School of Chemical and Pharmaceutical Sciences, Technological University Dublin, Dublin, Ireland
| | - Carmen Galán
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Cordoba, Spain; Andalusian Inter-University Institute for Earth System IISTA, University of Cordoba, Spain
| | - Herminia García-Mozo
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Cordoba, Spain; Andalusian Inter-University Institute for Earth System IISTA, University of Cordoba, Spain
| | - Purificación Alcázar
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Cordoba, Spain; Andalusian Inter-University Institute for Earth System IISTA, University of Cordoba, Spain
| | - Santiago Fernández
- Department of Construction, Polythecnic School, University of Extremadura, Extremadura, Spain
| | | | - Estrella Robles
- Department of Environmental Biology, University of Navarra, Navarra, Spain
| | | | - Arturo H Ariño
- Department of Environmental Biology, University of Navarra, Navarra, Spain
| | - Marta Recio
- Department of Botany and Plant Physiology, University of Malaga, Campus de Teatinos s/n, E-29071, Malaga, Spain
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7
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Grewling Ł, Magyar D, Chłopek K, Grinn-Gofroń A, Gwiazdowska J, Siddiquee A, Ianovici N, Kasprzyk I, Wójcik M, Lafférsová J, Majkowska-Wojciechowska B, Myszkowska D, Rodinkova V, Bortnyk M, Malkiewicz M, Piotrowska-Weryszko K, Sulborska-Różycka A, Rybniček O, Ščevková J, Šikoparija B, Skjøth CA, Smith M, Bogawski P. Bioaerosols on the atmospheric super highway: An example of long distance transport of Alternaria spores from the Pannonian Plain to Poland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 819:153148. [PMID: 35041944 DOI: 10.1016/j.scitotenv.2022.153148] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/08/2022] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
Alternaria spores are pathogenic to agricultural crops, and the longest and the most severe sporulation seasons are predominantly recorded in rural areas, e.g. the Pannonian Plain (PP) in South-Central Europe. In Poland (Central Europe), airborne Alternaria spore concentrations peak between July and August. In this study, we test the hypothesis that the PP is the source of Alternaria spores recorded in Poland after the main sporulation season (September-October). Airborne Alternaria spores (2005-2019) were collected using volumetric Hirst spore traps located in 38 locations along the potential pathways of air masses, i.e. from Serbia, Romania and Hungary, through the Czech Republic, Slovakia and Ukraine, to Northern Poland. Three potential episodes of Long Distance Transport (LDT) were selected and characterized in detail, including the analysis of Alternaria spore data, back trajectory analysis, dispersal modelling, and description of local weather and mesoscale synoptic conditions. During selected episodes, increases in Alternaria spore concentrations in Poznań were recorded at unusual times that deviated from the typical diurnal pattern, i.e. at night or during morning hours. Alternaria spore concentrations on the PP were very high (>1000 spores/m3) at that time. The presence of non-local Ambrosia pollen, common to the PP, were also observed in the air. Air mass trajectory analysis and dispersal modelling showed that the northwest part of the PP, north of the Transdanubian Mountains, was the potential source area of Alternaria spores. Our results show that Alternaria spores are transported over long distances from the PP to Poland. These spores may markedly increase local exposure to Alternaria spores in the receptor area and pose a risk to both human and plant health. Alternaria spores followed the same atmospheric route as previously described LDT ragweed pollen, revealing the existence of an atmospheric super highway that transports bioaerosols from the south to the north of Europe.
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Affiliation(s)
- Łukasz Grewling
- Laboratory of Aerobiology, Department of Systematic and Environmental Botany, Adam Mickiewicz University, Poznań, Poland.
| | - Donat Magyar
- National Public Health Institute, Budapest, Hungary
| | | | | | - Julia Gwiazdowska
- Laboratory of Aerobiology, Department of Systematic and Environmental Botany, Adam Mickiewicz University, Poznań, Poland
| | - Asad Siddiquee
- Laboratory of Aerobiology, Department of Systematic and Environmental Botany, Adam Mickiewicz University, Poznań, Poland
| | - Nicoleta Ianovici
- Faculty of Chemistry, Biology, and Geography, West University of Timisoara, Romania
| | - Idalia Kasprzyk
- Department of Biology, Institute of Biology and Biotechnology, University of Rzeszów, Rzeszów, Poland
| | - Magdalena Wójcik
- Department of Biology, Institute of Biology and Biotechnology, University of Rzeszów, Rzeszów, Poland
| | - Janka Lafférsová
- Department of Environmental Biology, Public Health Office, Banská Bystrica, Slovakia
| | | | - Dorota Myszkowska
- Jagiellonian University Medical College, Department of Clinical and Environmental Allergology, Kraków, Poland
| | | | - Mykyta Bortnyk
- National Pirogov Memorial Medical University, Vinnytsya, Ukraine; Vasyl' Stus Donetsk National University, Vinnytsia, Ukraine
| | | | | | | | - Ondrej Rybniček
- Paediatric Department, Allergy Unit, Masaryk University and University Hospital Brno, Brno, Czech Republic
| | - Jana Ščevková
- Department of Botany, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Branko Šikoparija
- BioSense Institute - Research Institute for Information Technologies in Biosystems, University of Novi Sad, Novi Sad, Serbia
| | - Carsten Ambelas Skjøth
- School of Science and the Environment, University of Worcester, Worcester, United Kingdom
| | - Matt Smith
- School of Science and the Environment, University of Worcester, Worcester, United Kingdom
| | - Paweł Bogawski
- Laboratory of Biological Spatial Information, Department of Systematic and Environmental Botany, Adam Mickiewicz University, Poznań, Poland
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8
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Abstract
Ambient fungal spores within the atmosphere can contribute to a range of negative human, animal and plant health conditions and diseases. However, trends in fungal spore seasonality, species prevalence, and geographical origin have been significantly understudied in Ireland. Previously unpublished data from the late 1970s have recently been collected and analysed to establish historical fungal spore trends/characteristics for Dublin. Historical spore concentrations were largely dominated by Alternaria, Ascospores, Basidiospores, Botrytis, Cladosporium, Erysiphe and Rusts. The main fungal spore season for Dublin commenced in April with the fructification of Scopulariopsis and Ganoderma. However, the vast majority of other spore types did not reach peak spore release until late summer. The correlation between ambient spore concentration, and meteorological parameters was examined using Multivariable Regression Tree (MRT) analysis. The notable correlations found for fungal spore concentrations tended to involve temperature-based parameters. The use of a non-parametric wind regression was also employed to determine the potential geographical origin of ambient fungal spores. The impact of wind direction, and high windspeed on fungal spores was established, ultimately highlighting the importance of studying and monitoring fungal spores within Ireland, rather than attempting to rely on data from other regions, as most fungal spores collected in Dublin appeared to originate from within the island.
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Xu X, Zhang L, Yang X, Cao H, Li J, Cao P, Guo L, Wang X, Zhao J, Xiang W. Alternaria spp. Associated with Leaf Blight of Maize in Heilongjiang Province, China. PLANT DISEASE 2022; 106:572-584. [PMID: 34472972 DOI: 10.1094/pdis-06-21-1151-re] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Maize (Zea mays L.) is a major economic crop worldwide. Maize can be infected by Alternaria species causing leaf blight that can result in significant economic losses. In this study, 168 Alternaria isolates recovered from symptomatic maize leaves were identified based on morphological characteristics, pathogenicity, and multilocus sequence analyses of the genes glyceraldehyde-3-phosphate dehydrogenase (GAPDH), the internal transcribed spacer of ribosomal DNA (rDNA ITS), the RNA polymerase II second largest subunit (RPB2), and histone3 (HIS3). Maize isolates grouped to four Alternaria species including Alternaria tenuissima, A. alternata, A. burnsii, and Alternaria sp. Notably, A. tenuissima (71.4%) was the most prevalent of the four isolated species, followed by A. alternata (21.5%), Alternaria sp. (4.1%), and A. burnsii (3.0%). Pathogenicity tests showed that all four Alternaria species could produce elliptic to nearly round, or strip, lesions on leaves of maize, gray-white to dry white in the lesion centers and reddish-brown at the edges. The average disease incidence (58.47%) and average disease index (63.55) of maize leaves inoculated with A. alternata were significantly higher than levels resulting from A. tenuissima (55.28% and 58.49), Alternaria sp. (55.34% and 58.75), and A. burnsii (56% and 55). Haplotype analyses indicated that there were 14 haplotypes of A. tenuissima and five haplotypes of A. alternata in Heilongjiang Province and suggested the occurrence of a population expansion. Results of the study showed that Alternaria species associated with maize leaf blight in Heilongjiang Province are more diverse than those that have been previously reported. This is the first report globally of A. tenuissima, A. burnsii, and an unclassified Alternaria species as causal agents of leaf blight on maize.
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Affiliation(s)
- Xi Xu
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Li Zhang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Xilang Yang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Hanshui Cao
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Jingjing Li
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Peng Cao
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Lifeng Guo
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, P.R. China
| | - Xiangjing Wang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Junwei Zhao
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Wensheng Xiang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, P.R. China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
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10
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Fontaine K, Fourrier-Jeandel C, Armitage AD, Boutigny AL, Crépet M, Caffier V, Gnide DC, Shiller J, Le Cam B, Giraud M, Ioos R, Aguayo J. Identification and pathogenicity of Alternaria species associated with leaf blotch disease and premature defoliation in French apple orchards. PeerJ 2021; 9:e12496. [PMID: 34917421 PMCID: PMC8643104 DOI: 10.7717/peerj.12496] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/25/2021] [Indexed: 11/20/2022] Open
Abstract
Leaf blotch caused by Alternaria spp. is a common disease in apple-producing regions. The disease is usually associated with one phylogenetic species and one species complex, Alternaria alternata and the Alternaria arborescens species complex (A. arborescens SC), respectively. Both taxa may include the Alternaria apple pathotype, a quarantine or regulated pathogen in several countries. The apple pathotype is characterized by the production of a host-selective toxin (HST) which is involved in pathogenicity towards the apple. A cluster of genes located on conditionally dispensable chromosomes (CDCs) is involved in the production of this HST (namely AMT in the case of the apple pathotype). Since 2016, leaf blotch and premature tree defoliation attributed to Alternaria spp. have been observed in apple-producing regions of central and south-eastern France. Our study aimed to identify the Alternaria species involved in apple tree defoliation and assess the presence of the apple pathotype in French orchards. From 2016 to 2018, 166 isolates were collected and identified by multi-locus sequence typing (MLST). This analysis revealed that all these French isolates belonged to either the A. arborescens SC or A. alternata. Specific PCR detection targeting three genes located on the CDC did not indicate the presence of the apple pathotype in France. Pathogenicity was assessed under laboratory conditions on detached leaves of Golden Delicious and Gala apple cultivars for a representative subset of 28 Alternaria isolates. All the tested isolates were pathogenic on detached leaves of cultivars Golden Delicious and Gala, but no differences were observed between the pathogenicity levels of A. arborescens SC and A. alternata. However, the results of our pathogenicity test suggest that cultivar Golden Delicious is more susceptible than Gala to Alternaria leaf blotch. Implications in the detection of the Alternaria apple pathotype and the taxonomic assignment of Alternaria isolates involved in Alternaria leaf blotch are discussed.
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Affiliation(s)
- Kévin Fontaine
- ANSES, Laboratoire de la Santé des Végétaux, Unité de Mycologie, USC INRAE, Malzéville, France
| | - Céline Fourrier-Jeandel
- ANSES, Laboratoire de la Santé des Végétaux, Unité de Mycologie, USC INRAE, Malzéville, France
| | - Andrew D. Armitage
- Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent, United Kingdom
| | - Anne-Laure Boutigny
- ANSES, Laboratoire de la Santé des Végétaux, Unité Bactériologie, Virologie et OGM, Angers, France
| | | | - Valérie Caffier
- Université d’Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, Angers, France
| | - Dossi Carine Gnide
- ANSES, Laboratoire de la Santé des Végétaux, Unité de Mycologie, USC INRAE, Malzéville, France
| | - Jason Shiller
- Université d’Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, Angers, France
| | - Bruno Le Cam
- Université d’Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, Angers, France
| | - Michel Giraud
- Centre opérationnel de Lanxade, CTIFL, Prigonrieux, France
| | - Renaud Ioos
- ANSES, Laboratoire de la Santé des Végétaux, Unité de Mycologie, USC INRAE, Malzéville, France
| | - Jaime Aguayo
- ANSES, Laboratoire de la Santé des Végétaux, Unité de Mycologie, USC INRAE, Malzéville, France
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11
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Grinn-Gofroń A, Bogawski P, Bosiacka B, Nowosad J, Camacho I, Sadyś M, Skjøth CA, Pashley CH, Rodinkova V, Çeter T, Traidl-Hoffmann C, Damialis A. Abundance of Ganoderma sp. in Europe and SW Asia: modelling the pathogen infection levels in local trees using the proxy of airborne fungal spore concentrations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 793:148509. [PMID: 34175598 DOI: 10.1016/j.scitotenv.2021.148509] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/09/2021] [Accepted: 06/13/2021] [Indexed: 06/13/2023]
Abstract
Ganoderma comprises a common bracket fungal genus that causes basal stem rot in deciduous and coniferous trees and palms, thus having a large economic impact on forestry production. We estimated pathogen abundance using long-term, daily spore concentration data collected in five biogeographic regions in Europe and SW Asia. We hypothesized that pathogen abundance in the air depends on the density of potential hosts (trees) in the surrounding area, and that its spores originate locally. We tested this hypothesis by (1) calculating tree cover density, (2) assessing the impact of local meteorological variables on spore concentration, (3) computing back trajectories, (4) developing random forest models predicting daily spore concentration. The area covered by trees was calculated based on Tree Density Datasets within a 30 km radius from sampling sites. Variations in daily and seasonal spore concentrations were cross-examined between sites using a selection of statistical tools including HYSPLIT and random forest models. Our results showed that spore concentrations were higher in Northern and Central Europe than in South Europe and SW Asia. High and unusually high spore concentrations (> 90th and > 98th percentile, respectively) were partially associated with long distance transported spores: at least 33% of Ganoderma spores recorded in Madeira during days with high concentrations originated from the Iberian Peninsula located >900 km away. Random forest models developed on local meteorological data performed better in sites where the contribution of long distance transported spores was lower. We found that high concentrations were recorded in sites with low host density (Leicester, Worcester), and low concentrations in Kastamonu with high host density. This suggests that south European and SW Asian forests may be less severely affected by Ganoderma. This study highlights the effectiveness of monitoring airborne Ganoderma spore concentrations as a tool for assessing local Ganoderma pathogen infection levels.
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Affiliation(s)
| | - Paweł Bogawski
- Department of Systematic and Environmental Botany, Laboratory of Biological Spatial Information, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland
| | - Beata Bosiacka
- Institute of Marine and Environmental Sciences, University of Szczecin, 70-383 Szczecin, Poland
| | - Jakub Nowosad
- Institute of Geoecology and Geoinformation, Adam Mickiewicz University, 10 Krygowskiego Street, 61-680 Poznań, Poland
| | - Irene Camacho
- Madeira University, Faculty of Life Sciences, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - Magdalena Sadyś
- Hereford & Worcester Fire and Rescue Service, Headquarters, Performance & Information, Hindlip Park, Worcester WR3 8SP, United Kingdom; University of Worcester, School of Science and the Environment, Henwick Grove, Worcester WR2 6AJ, United Kingdom
| | - Carsten Ambelas Skjøth
- University of Worcester, School of Science and the Environment, Henwick Grove, Worcester WR2 6AJ, United Kingdom
| | - Catherine Helen Pashley
- Institute for Lung Health, Department of Respiratory Sciences, University of Leicester, Leicester LE1 7RH, United Kingdom
| | | | - Talip Çeter
- Kastamonu University, Arts and Sciences Faculty, Department of Biology, 37100 Kuzeykent, Kastamonu, Turkey
| | - Claudia Traidl-Hoffmann
- Department of Environmental Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany; Institute of Environmental Medicine, Helmholtz Center Munich - Research Center for Environmental Health, Augbsurg, Germany
| | - Athanasios Damialis
- Department of Environmental Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany; Department of Ecology, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, Greece.
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12
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Theisinger SM, de Smidt O, Lues JFR. Categorisation of culturable bioaerosols in a fruit juice manufacturing facility. PLoS One 2021; 16:e0242969. [PMID: 33882058 PMCID: PMC8059861 DOI: 10.1371/journal.pone.0242969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/12/2020] [Indexed: 11/18/2022] Open
Abstract
Bioaerosols are defined as aerosols that comprise particles of biological origin or activity that may affect living organisms through infectivity, allergenicity, toxicity, or through pharmacological or other processes. Interest in bioaerosol exposure has increased over the last few decades. Exposure to bioaerosols may cause three major problems in the food industry, namely: (i) contamination of food (spoilage); (ii) allergic reactions in individual consumers; or (iii) infection by means of pathogenic microorganisms present in the aerosol. The aim of this study was to characterise the culturable fraction of bioaerosols in the production environment of a fruit juice manufacturing facility and categorise isolates as harmful, innocuous or potentially beneficial to the industry, personnel and environment. Active sampling was used to collect representative samples of five areas in the facility during peak and off-peak seasons. Areas included the entrance, preparation and mixing area, between production lines, bottle dispersion and filling stations. Microbes were isolated and identified using 16S, 26S or ITS amplicon sequencing. High microbial counts and species diversity were detected in the facility. 239 bacteria, 41 yeasts and 43 moulds were isolated from the air in the production environment. Isolates were categorised into three main groups, namely 27 innocuous, 26 useful and 39 harmful bioaerosols. Harmful bioaerosols belonging to the genera Staphylococcus, Pseudomonas, Penicillium and Candida were present. Although innocuous and useful bioaerosols do not negatively influence human health their presence act as an indicator that an ideal environment exists for possible harmful bioaerosols to emerge.
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Affiliation(s)
- Shirleen M. Theisinger
- Centre for Applied Food Sustainability and Biotechnology (CAFSaB), Faculty of Health and Environmental Sciences, Central University of Technology, Free State, Bloemfontein, South Africa
| | - Olga de Smidt
- Centre for Applied Food Sustainability and Biotechnology (CAFSaB), Faculty of Health and Environmental Sciences, Central University of Technology, Free State, Bloemfontein, South Africa
| | - Jan F. R. Lues
- Centre for Applied Food Sustainability and Biotechnology (CAFSaB), Faculty of Health and Environmental Sciences, Central University of Technology, Free State, Bloemfontein, South Africa
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13
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Stępalska D, Myszkowska D, Piotrowicz K, Kluska K, Chłopek K, Grewling Ł, Lafférsová J, Majkowska-Wojciechowska B, Malkiewicz M, Piotrowska-Weryszko K, Puc M, Rodinkova V, Rybníček O, Ščevková J, Voloshchuk K. High Ambrosia pollen concentrations in Poland respecting the long distance transport (LDT). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 736:139615. [PMID: 32474278 DOI: 10.1016/j.scitotenv.2020.139615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/19/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
High Ambrosia pollen concentrations in Poland rather rarely come from the local sources. The aim of this study was to define the temporal and spatial differences of the high Ambrosia pollen concentrations by creating models for the pollen transport from the distant sources. This study was thought to determine the direction of the air masses inflow into Poland, carrying Ambrosia pollen, from areas of the bordering countries with the pollen concentrations higher than iSTOTEN_n Poland. Pollen and meteorological datasets at 8 monitoring sites in Poland, and daily pollen concentrations at 11 sites in the Czech Republic, 5 sites in Slovakia and 3 sites in Ukraine were analysed recently. Days with concentrations ≥10 Pollen/m3 and concurrent meteorological situations were analysed in great deal. The HYSPLIT model was applied to compute backward trajectories up to 4 days backward (96 h) and at three altitudes: 20, 500 and 1000 m above ground level (a.g.l.). High pollen concentrations occur most frequently when the air masses inflow into Poland from southerly (S, SE, SW, 44%) and easterly (E, 6%) directions and in no advection situations (25%). In years with the highest frequency of days over 10 Pollen/m3, the prevailing directions of the pollen influx into Poland were from the South (2004-2006, 2008, 2011) but in one year (2014) from the East. Trajectories for the studied period show that air masses come most frequently from Slovakia and the Czech Republic. Sometimes, the Ambrosia pollen transport happens from Ukraine.
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Affiliation(s)
- Danuta Stępalska
- Institute of Botany, Jagiellonian University, Kopernika 27, 31-531 Kraków, Poland
| | - Dorota Myszkowska
- Jagiellonian University Medical College, Department of Clinical and Environmental Allergology, Śniadeckich 10, 31-531 Kraków, Kraków, Poland.
| | - Katarzyna Piotrowicz
- Department of Climatology, Institute of Geography and Spatial Management, Jagiellonian University, Gronostajowa 7, 30-367 Kraków, Poland.
| | - Katarzyna Kluska
- Department of Environmental Monitoring, University of Rzeszów, Zelwerowicza 4, 35-601 Rzeszów, Poland
| | - Kazimiera Chłopek
- Faculty of Life Sciences, University of Silesia, Będzińska, 60 41-200 Sosnowiec, Poland.
| | - Łukasz Grewling
- Laboratory of Aerobiology, Department of Systematic and Environmental Botany, Faculty of Biology, Adam Mickiewicz University, Poznańskiego 6, 61-614, Poznań, Poland
| | - Janka Lafférsová
- Department of Environmental Biology, Public Health Office, Cesta k/nemocnici 25, 975-56 Banská Bystrica, Slovakia
| | | | - Małgorzata Malkiewicz
- Department of Stratigraphical Geology, Institute of Geological Sciences, University of Wrocław.
| | - Krystyna Piotrowska-Weryszko
- Department of Botany and Plant Physiology, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland.
| | - Małgorzata Puc
- Institute of Marine and Environmental Sciences, University of Szczecin, Felczaka 3c, 71-412 Szczecin, Poland.
| | - Victoria Rodinkova
- National Pirogov Memorial Medical University, 56, Pirogov Street, Vinnytsia 21018, Ukraine
| | - Ondřej Rybníček
- Paediatric Department, Allergy Unit, Masaryk University and University Hospital Brno, Jihlavska 20, CZ-625 00 Brno, Czech Republic
| | - Jana Ščevková
- Department of Botany, Faculty of Natural Sciences, Comenius University in Bratislava, Révová 39, 811 02 Bratislava 1, Slovakia.
| | - Kateryna Voloshchuk
- Department of Botany, Biological Faculty Ivan Franko National University of Lviv, Kyryla Mefodiya Street, 8, Lviv, 79005, Ukraine
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14
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Matić S, Tabone G, Garibaldi A, Gullino ML. Alternaria Leaf Spot Caused by Alternaria Species: An Emerging Problem on Ornamental Plants in Italy. PLANT DISEASE 2020; 104:2275-2287. [PMID: 32584157 DOI: 10.1094/pdis-02-20-0399-re] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Serious outbreaks of Alternaria leaf spot and plant decay have recently been recorded on several ornamental plants in the Biella Province (Northern Italy). Twenty-two fungal isolates were obtained from Alternaria infected plant tissues from 13 ornamental hosts. All the isolates were identified morphologically as small-spored Alternaria species. Multilocus sequence typing, carried out by means of ITS, rpb2, tef1, endoPG, Alt a 1, and OPA10-2, assigned 19 isolates as Alternaria alternata, two isolates as belonging to the Alternaria arborescens species complex, and one isolate as an unknown Alternaria sp. Haplotype analyses of ornamental and reference A. alternata isolates from 12 countries identified 14 OPA10-2 and 11 endoPG haplotypes showing a relatively high haplotype diversity. A lack of host specialization or geographic distribution was observed. The host range of the studied A. alternata isolates expanded in cross-pathogenicity assays, and more aggressiveness was frequently observed on the experimental plants than on the host plants from which the fungal isolates were originally isolated. High disease severity, population expansion, intraspecies diversity, and increased range of experimental hosts were seen in the emergence of Alternaria disease on ornamentals. More epidemiological and molecular studies should be performed to better understand these diseases, taking into consideration factors such as seed transmission and ongoing climate changes.
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Affiliation(s)
- Slavica Matić
- AGROINNOVA - Centre of Competence for the Innovation in the Agro-environmental Sector, Università di Torino, 10095 Grugliasco (TO), Italy
- Dept. Agricultural, Forestry and Food Sciences (DISAFA), Università di Torino, 10095 Grugliasco (TO), Italy
| | - Giulia Tabone
- AGROINNOVA - Centre of Competence for the Innovation in the Agro-environmental Sector, Università di Torino, 10095 Grugliasco (TO), Italy
| | - Angelo Garibaldi
- AGROINNOVA - Centre of Competence for the Innovation in the Agro-environmental Sector, Università di Torino, 10095 Grugliasco (TO), Italy
| | - Maria Lodovica Gullino
- AGROINNOVA - Centre of Competence for the Innovation in the Agro-environmental Sector, Università di Torino, 10095 Grugliasco (TO), Italy
- Dept. Agricultural, Forestry and Food Sciences (DISAFA), Università di Torino, 10095 Grugliasco (TO), Italy
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15
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Accessing the Life in Smoke: A New Application of Unmanned Aircraft Systems (UAS) to Sample Wildland Fire Bioaerosol Emissions and Their Environment. FIRE-SWITZERLAND 2019. [DOI: 10.3390/fire2040056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Wildland fire is a major producer of aerosols from combustion of vegetation and soils, but little is known about the abundance and composition of smoke’s biological content. Bioaerosols, or aerosols derived from biological sources, may be a significant component of the aerosol load vectored in wildland fire smoke. If bioaerosols are injected into the upper troposphere via high-intensity wildland fires and transported across continents, there may be consequences for the ecosystems they reach. Such transport would also alter the concept of a wildfire’s perimeter and the disturbance domain of its impact. Recent research has revealed that viable microorganisms are directly aerosolized during biomass combustion, but sampling systems and methodology for quantifying this phenomenon are poorly developed. Using a series of prescribed fires in frequently burned forest ecosystems, we report the results of employing a small rotary-wing unmanned aircraft system (UAS) to concurrently sample aerosolized bacteria and fungi, particulate matter, and micrometeorology in smoke plumes versus background conditions. Airborne impaction-based bioaerosol sampling indicated that microbial composition differed between background air and smoke, with seven unique organisms in smoke vs. three in background air. The air temperature was negatively correlated with the number of fungal colony-forming units detected. Our results demonstrate the utility of a UAS-based sampling platform for active sampling of viable aerosolized microbes in smoke arising from wildland fires. This methodology can be extended to sample viable microbes in a wide variety of emissions sampling pursuits, especially those in hazardous and inaccessible environments.
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16
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Grewling Ł, Bogawski P, Kryza M, Magyar D, Šikoparija B, Skjøth CA, Udvardy O, Werner M, Smith M. Concomitant occurrence of anthropogenic air pollutants, mineral dust and fungal spores during long-distance transport of ragweed pollen. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:112948. [PMID: 31377333 DOI: 10.1016/j.envpol.2019.07.116] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/17/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Large-scale synoptic conditions are able to transport considerable amounts of airborne particles over entire continents by creating substantial air mass movement. This phenomenon is observed in Europe in relation to highly allergenic ragweed (Ambrosia L.) pollen grains that are transported from populations in Central Europe (mainly the Pannonian Plain and Balkans) to the North. The path taken by atmospheric ragweed pollen often passes through the highly industrialised mining region of Silesia in Southern Poland, considered to be one of the most polluted areas in the EU. It is hypothesized that chemical air pollutants released over Silesia could become mixed with biological material and be transported to less polluted regions further North. We analysed levels of air pollution during episodes of long-distance transport (LDT) of ragweed pollen to Poland. Results show that, concomitantly with pollen, the concentration of air pollutants with potential health-risk, i.e. SO2, and PM10, have also significantly increased (by 104% and 37%, respectively) in the receptor area (Western Poland). Chemical transport modelling (EMEP) and air mass back-trajectory analysis (HYSPLIT) showed that potential sources of PM10 include Silesia, as well as mineral dust from the Ukrainian steppe and the Sahara Desert. In addition, atmospheric concentrations of other allergenic biological particles, i.e. Alternaria Nees ex Fr. spores, also increased markedly (by 115%) during LDT episodes. We suggest that the LDT episodes of ragweed pollen over Europe are not a "one-component" phenomenon, but are often related to elevated levels of chemical air pollutants and other biotic and abiotic components (fungal spores and desert dust).
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Affiliation(s)
- Łukasz Grewling
- Laboratory of Aeropalynology, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-489 Poznań, Poland.
| | - Paweł Bogawski
- Laboratory of Biological Spatial Information, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-489 Poznań, Poland
| | - Maciej Kryza
- Department of Climatology and Atmosphere Protection, University of Wroclaw, Wroclaw, Poland
| | - Donat Magyar
- Department of Air Hygiene and Aerobiology, National Public Health Institute, Hungary
| | - Branko Šikoparija
- BioSense Institute - Research Institute for Information Technologies in Biosystems, University of Novi Sad, Novi Sad, Serbia
| | - Carsten Ambelas Skjøth
- School of Science and the Environment, University of Worcester, Henwick Grove, WR2 6AJ, Worcester, United Kingdom
| | - Orsolya Udvardy
- Department of Air Hygiene and Aerobiology, National Public Health Institute, Hungary
| | - Małgorzata Werner
- Department of Climatology and Atmosphere Protection, University of Wroclaw, Wroclaw, Poland
| | - Matt Smith
- School of Science and the Environment, University of Worcester, Henwick Grove, WR2 6AJ, Worcester, United Kingdom
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17
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Meyer M, Burgin L, Hort MC, Hodson DP, Gilligan CA. Large-Scale Atmospheric Dispersal Simulations Identify Likely Airborne Incursion Routes of Wheat Stem Rust Into Ethiopia. PHYTOPATHOLOGY 2017; 107:1175-1186. [PMID: 28777055 DOI: 10.1094/phyto-01-17-0035-fi] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In recent years, severe wheat stem rust epidemics hit Ethiopia, sub-Saharan Africa's largest wheat-producing country. These were caused by race TKTTF (Digalu race) of the pathogen Puccinia graminis f. sp. tritici, which, in Ethiopia, was first detected at the beginning of August 2012. We use the incursion of this new pathogen race as a case study to determine likely airborne origins of fungal spores on regional and continental scales by means of a Lagrangian particle dispersion model (LPDM). Two different techniques, LPDM simulations forward and backward in time, are compared. The effects of release altitudes in time-backward simulations and P. graminis f. sp. tritici urediniospore viability functions in time-forward simulations are analyzed. Results suggest Yemen as the most likely origin but, also, point to other possible sources in the Middle East and the East African Rift Valley. This is plausible in light of available field surveys and phylogenetic data on TKTTF isolates from Ethiopia and other countries. Independent of the case involving TKTTF, we assess long-term dispersal trends (>10 years) to obtain quantitative estimates of the risk of exotic P. graminis f. sp. tritici spore transport (of any race) into Ethiopia for different 'what-if' scenarios of disease outbreaks in potential source countries in different months of the wheat season.
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Affiliation(s)
- M Meyer
- First and fifth author: Epidemiology and Modelling Group, Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, U.K.; second and third author: Atmospheric Dispersion and Air Quality (ADAQ), Met Office, Exeter, EX1 3PB, U.K.; and fourth author: International Maize and Wheat Improvement Center (CIMMYT), PO Box 5689, Addis Ababa, Ethiopia
| | - L Burgin
- First and fifth author: Epidemiology and Modelling Group, Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, U.K.; second and third author: Atmospheric Dispersion and Air Quality (ADAQ), Met Office, Exeter, EX1 3PB, U.K.; and fourth author: International Maize and Wheat Improvement Center (CIMMYT), PO Box 5689, Addis Ababa, Ethiopia
| | - M C Hort
- First and fifth author: Epidemiology and Modelling Group, Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, U.K.; second and third author: Atmospheric Dispersion and Air Quality (ADAQ), Met Office, Exeter, EX1 3PB, U.K.; and fourth author: International Maize and Wheat Improvement Center (CIMMYT), PO Box 5689, Addis Ababa, Ethiopia
| | - D P Hodson
- First and fifth author: Epidemiology and Modelling Group, Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, U.K.; second and third author: Atmospheric Dispersion and Air Quality (ADAQ), Met Office, Exeter, EX1 3PB, U.K.; and fourth author: International Maize and Wheat Improvement Center (CIMMYT), PO Box 5689, Addis Ababa, Ethiopia
| | - C A Gilligan
- First and fifth author: Epidemiology and Modelling Group, Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, U.K.; second and third author: Atmospheric Dispersion and Air Quality (ADAQ), Met Office, Exeter, EX1 3PB, U.K.; and fourth author: International Maize and Wheat Improvement Center (CIMMYT), PO Box 5689, Addis Ababa, Ethiopia
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18
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Intra-diurnal and daily changes in Didymella ascospore concentrations in the air of an urban site. FUNGAL ECOL 2017. [DOI: 10.1016/j.funeco.2017.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Maya-Manzano JM, Sadyś M, Tormo-Molina R, Fernández-Rodríguez S, Oteros J, Silva-Palacios I, Gonzalo-Garijo A. Relationships between airborne pollen grains, wind direction and land cover using GIS and circular statistics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 584-585:603-613. [PMID: 28132776 DOI: 10.1016/j.scitotenv.2017.01.085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/28/2016] [Accepted: 01/13/2017] [Indexed: 06/06/2023]
Abstract
Airborne bio-aerosol content (mainly pollen and spores) depends on the surrounding vegetation and weather conditions, particularly wind direction. In order to understand this issue, maps of the main land cover in influence areas of 10km in radius surrounding pollen traps were created. Atmospheric content of the most abundant 14 pollen types was analysed in relation to the predominant wind directions measured in three localities of SW of Iberian Peninsula, from March 2011 to March 2014. Three Hirst type traps were used for aerobiological monitoring. The surface area for each land cover category was calculated and wind direction analysis was approached by using circular statistics. This method could be helpful for estimating the potential risk of exposure to various pollen types. Thus, the main land cover was different for each monitoring location, being irrigated crops, pastures and hardwood forests the main categories among 11 types described. Comparison of the pollen content with the predominant winds and land cover shows that the atmospheric pollen concentration is related to some source areas identified in the inventory. The study found that some pollen types (e.g. Plantago, Fraxinus-Phillyrea, Alnus) come from local sources but other pollen types (e.g. Quercus) are mostly coming from longer distances. As main conclusions, airborne particle concentrations can be effectively split by addressing wind with circular statistics. By combining circular statistics and GIS method with aerobiological data, we have created a useful tool for understanding pollen origin. Some pollen loads can be explained by immediate surrounding landscape and observed wind patterns for most of the time. However, other factors like medium or long-distance transport or even pollen trap location within a city, may occasionally affect the pollen load recorded using an air sampler.
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Affiliation(s)
- J M Maya-Manzano
- Department of Plant Biology, Ecology and Earth Sciences, University of Extremadura, 06006 Badajoz, Spain..
| | - M Sadyś
- Rothamsted Research, West Common, AL5 2JQ Harpenden, United Kingdom
| | - R Tormo-Molina
- Department of Plant Biology, Ecology and Earth Sciences, University of Extremadura, 06006 Badajoz, Spain
| | | | - J Oteros
- Centre of Allergy & Environment (ZAUM), Technical University of Munich, 80802 Munich, Germany
| | - I Silva-Palacios
- Department of Applied Physics, University of Extremadura, 06071 Badajoz, Spain
| | - A Gonzalo-Garijo
- Allergy Section, Infanta Cristina University Hospital, 06080 Badajoz, Spain
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20
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Maya-Manzano JM, Fernández-Rodríguez S, Smith M, Tormo-Molina R, Reynolds AM, Silva-Palacios I, Gonzalo-Garijo Á, Sadyś M. Airborne Quercus pollen in SW Spain: Identifying favourable conditions for atmospheric transport and potential source areas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 571:1037-1047. [PMID: 27443456 DOI: 10.1016/j.scitotenv.2016.07.094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/24/2016] [Accepted: 07/14/2016] [Indexed: 06/06/2023]
Abstract
The pollen grains of Quercus spp. (oak trees) are allergenic. This study investigates airborne Quercus pollen in SW Spain with the aim identifying favourable conditions for atmospheric transport and potential sources areas. Two types of Quercus distribution maps were produced. Airborne Quercus pollen concentrations were measured at three sites located in the Extremadura region (SW Spain) for 3 consecutive years. The seasonal occurrence of Quercus pollen in the air was investigated, as well as days with pollen concentrations ≥80Pm(-3). The distance that Quercus pollen can be transported in appreciable numbers was calculated using clusters of back trajectories representing the air mass movement above the source areas (oak woodlands), and by using a state-of-the-art dispersion model. The two main potential sources of Quercus airborne pollen captured in SW Spain are Q. ilex subsp. ballota and Q. suber. The minimum distances between aerobiological stations and Quercus woodlands have been estimated as: 40km (Plasencia), 66km (Don Benito), 62km (Zafra) from the context of this study. Daily mean Quercus pollen concentration can exceed 1,700Pm(-3), levels reached not less than 24 days in a single year. High Quercus pollen concentration were mostly associated with moderate wind speed events (6-10ms(-1)), whereas that a high wind speed (16-20ms(-1)) seems to be associated with low concentrations.
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Affiliation(s)
- José María Maya-Manzano
- University of Extremadura, Department of Plant Biology, Ecology and Earth Sciences, Faculty of Science, Avda Elvas s/n, 06006 Badajoz, Spain
| | - Santiago Fernández-Rodríguez
- University of Extremadura, Department of Construction, School of Technology, Avda Universidad s/n, 10003 Cáceres, Spain.
| | - Matt Smith
- Institute of Science and the Environment, University of Worcester, United Kingdom
| | - Rafael Tormo-Molina
- University of Extremadura, Department of Plant Biology, Ecology and Earth Sciences, Faculty of Science, Avda Elvas s/n, 06006 Badajoz, Spain
| | - Andrew M Reynolds
- Rothamsted Research, West Common, Harpenden, AL5 2JQ, United Kingdom
| | - Inmaculada Silva-Palacios
- University of Extremadura, Department of Applied Physics, Engineering Agricultural School, 06006 Badajoz, Spain
| | - Ángela Gonzalo-Garijo
- Hospital Universitario Infanta Cristina, Department of Allergology, 06080 Badajoz, Spain
| | - Magdalena Sadyś
- Rothamsted Research, West Common, Harpenden, AL5 2JQ, United Kingdom
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21
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Grinn-Gofroń A, Sadyś M, Kaczmarek J, Bednarz A, Pawłowska S, Jedryczka M. Back-trajectory modelling and DNA-based species-specific detection methods allow tracking of fungal spore transport in air masses. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 571:658-669. [PMID: 27405520 DOI: 10.1016/j.scitotenv.2016.07.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 07/01/2016] [Accepted: 07/05/2016] [Indexed: 06/06/2023]
Abstract
Recent advances in molecular detection of living organisms facilitate the introduction of novel methods to studies of the transport of fungal spores over large distances. Monitoring the migration of airborne fungi using microscope based spore identification is limited when different species produce very similar spores. In our study, DNA-based monitoring with the use of species-specific probes allowed us to track the aerial movements of two important fungal pathogens of oilseed rape (Brassica napus L.), i.e., Leptosphaeria maculans and Leptosphaeria biglobosa, which have identical spore shape and size. The fungi were identified using dual-labelled fluorescent probes that were targeted to a β-tubulin gene fragment of either Leptosphaeria species. Spore identification by Real-Time PCR techniques capable of detecting minute amounts of DNA of selected fungal species was combined with back-trajectory analysis, allowing the tracking of past movements of air masses using the Hybrid Single Particle Lagrangian Integrated Trajectory model. Over a study period spanning the previous decade (2006-2015) we investigated two specific events relating to the long distance transport of Leptosphaeria spp. spores to Szczecin in North-West Poland. Based on the above mentioned methods and the results obtained with the additional spore sampler located in nearby Szczecin, and operating at the ground level in an oilseed rape field, we have demonstrated that on both occasions the L. biglobosa spores originated from the Jutland Peninsula. This is the first successful attempt to combine analysis of back-trajectories of air masses with DNA-based identification of economically important pathogens of oilseed rape in Europe. In our studies, the timing of L. biglobosa ascospore dispersal in the air was unlikely to result in the infection of winter oilseed rape grown as a crop plant. However, the fungus could infect other host plants, such as vegetable brassicas, cruciferous weeds, spring rapeseed and winter rapeseed growing as a volunteer plant.
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Affiliation(s)
- Agnieszka Grinn-Gofroń
- Department of Plant Taxonomy and Phytogeography, University of Szczecin, Wąska 13, 71-415 Szczecin, Poland
| | - Magdalena Sadyś
- Rothamsted Research, West Common, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Joanna Kaczmarek
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland
| | - Aleksandra Bednarz
- Department of Plant Taxonomy and Phytogeography, University of Szczecin, Wąska 13, 71-415 Szczecin, Poland
| | - Sylwia Pawłowska
- Department of Plant Taxonomy and Phytogeography, University of Szczecin, Wąska 13, 71-415 Szczecin, Poland
| | - Malgorzata Jedryczka
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland.
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22
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Szczepanek K, Myszkowska D, Worobiec E, Piotrowicz K, Ziemianin M, Bielec-Bąkowska Z. The long-range transport of Pinaceae pollen: an example in Kraków (southern Poland). AEROBIOLOGIA 2016; 33:109-125. [PMID: 28255195 PMCID: PMC5309276 DOI: 10.1007/s10453-016-9454-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 09/14/2016] [Indexed: 05/06/2023]
Abstract
High Pinaceae pollen concentrations in the air and on the surface of puddles before the main pollen season started were observed in Kraków (southern Poland) in May 2013. The paper presents the results of detailed studies of the composition and source of the "yellow rain" in 2013, and as a comparison, the Pinaceae pollen concentrations and samples collected from the ground surface in 2014 were considered. The air samples were collected using the volumetric method (Hirst-type device), while pollen grains sampled from the ground surface were processed using a modified Erdtman acetolysis method. Finally, all samples were studied using a light microscope. In 2013, the period of higher Abies, Picea and Pinus pollen concentrations was observed from the 5 to 12 of May, earlier than the main pollen season occurred. The presence of rainfall on the 12 and 13 of May 2013 caused the pollen deposition on the ground surface, where the prevalence of Pinaceae pollen was found. The synoptic situation and the analysis of the back-trajectories and air mass advection at the beginning of May 2013 indicated that Pinaceae pollen grains could have been transported from Ukraine, Romania, Hungary and Slovakia. In contrast, Pinaceae pollen grains deposited on the ground surface as a "yellow" film in May 2014, originated from local sources.
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Affiliation(s)
| | - Dorota Myszkowska
- Department of Clinical and Environmental Allergology, Jagiellonian University Medical College, Kraków, Poland
| | - Elżbieta Worobiec
- W. Szafer Institute of Botany, Polish Academy of Sciences, Kraków, Poland
| | - Katarzyna Piotrowicz
- Institute of Geography and Spatial Management, Jagiellonian University, Kraków, Poland
| | - Monika Ziemianin
- Department of Clinical and Environmental Allergology, Jagiellonian University Medical College, Kraków, Poland
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23
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Grinn-Gofroń A, Strzelczak A, Stępalska D, Myszkowska D. A 10-year study of Alternaria and Cladosporium in two Polish cities (Szczecin and Cracow) and relationship with the meteorological parameters. AEROBIOLOGIA 2016; 32:83-94. [PMID: 27034536 PMCID: PMC4773472 DOI: 10.1007/s10453-015-9411-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 11/03/2015] [Indexed: 05/04/2023]
Abstract
Alternaria and Cladosporium spores belong to the most frequent and allergenic particles in bioaerosol in the temperate climate. The investigation of Alternaria and Cladosporium spore concentrations was performed in two cities in Poland, Szczecin and Cracow, in 2004-2013. The meteorological parameters taken to assess their impact on fungal spores were average, maximum and minimum temperature, relative humidity and average wind velocity. In order to reveal whether changes in dynamics of spore seasons are driven by meteorological conditions, ordination methods were applied. Canonical correspondence analysis was used to explore redundancy among the predictors (meteorological parameters). Prior to ordination analyses, the data were log(x)-transformed. Concentrations of Alternaria and Cladosporium spores were significantly higher in Szczecin comparing to Cracow, but it was also observed the decreasing trend in the spore concentrations in Szczecin. As regards temperature, it was higher in Cracow and was still increasing in the studied years. Relative humidity and wind velocity were significantly lower in Cracow. In Szczecin meteorological conditions did not explain changes in spore season characteristics (insignificant redundancy analysis models), while in Cracow's redundancy analysis models indicated that spore season parameters were in over 40 % determined by meteorological conditions, mainly air temperature and wind velocity. If they increase, the peak value, total number of spores and their average concentrations in a season will also increase.
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Affiliation(s)
- Agnieszka Grinn-Gofroń
- />Department of Plant Taxonomy and Phytogeography, University of Szczecin, Wąska 13, 71-415 Szczecin, Poland
| | - Agnieszka Strzelczak
- />Department of Process Engineering, West Pomeranian University of Technology, Szczecin, Poland
| | | | - Dorota Myszkowska
- />Department of Clinical and Environmental Allergology, Jagiellonian University Medical College, Cracow, Poland
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