Assessment of airborne Curvularia propagules in the atmosphere of Havana, Cuba

Almaguer, Michel Guerra; Vázquez, Lilivet Díaz; Fernández-González, María; Salas, Sheyla

doi:10.1007/s10453-020-09674-4

Cited by 4 publications

(3 citation statements)

References 44 publications

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“…The high concentration and predominance of Aspergillus can be attributed to the small size of their spores which can allow a long lifetime in the air (Reponen et al, 2001;Richardson & Rautemaa-Richardson, 2021). While Cladosporium is the most abundant outdoor fungal spore (Anees-Hill et al, 2022;Sánchez Espinosa et al, 2021), and Curvularia is highly frequent in tropical or subtropical climates (Almaguer et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Assessment of fungal aerosols in a public library with natural ventilation

et al. 2022

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Fungal aerosols deteriorate library collections and can impact human health, mainly via respiratory diseases. Their spread is influenced by factors such as temperature and relative humidity. This study aims to assess the concentration of fungal aerosols in the interior environment of the Popular Library of Gaira in the District of Santa Marta, Colombia, using a two-stage cascade impactor utilizing Sabouraud dextrose agar on Petri dishes for the collection of samples. The sampler was positioned at 1.5 m above ground level, operated with a flow rate of 28.3 l/min for 4 min and thermo-hygrometric conditions were also recorded. Concentrations in the air of up to 1197.0 CFU/m3 were reported, with a mean value close to 150 CFU/m3. Higher values during the morning samples were noted. Seven genera of fungi were found, Aspergillus and Curvularia were the most abundant. The temperature was between 30.80 and 33.51 °C, and the relative humidity was between 62.61 and 64.80%. Statistical analysis showed a significant correlation between the fungal aerosol concentration and relative humidity, where an increase of 10% in moisture could double the fungal aerosol concentration. We concluded that potentially favorable conditions exist indoors for the growth and survival of the following fungi: Aspergillus, Penicillium, Cladosporium, and Curvularia, and to a lesser extent for Chrysonilia, Cunninghamella, and Paecylomices. Relative humidity was seen to be the factor that affects the concentration of aerosols fungal in the library most significantly.

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Section: Discussionmentioning

confidence: 99%

Assessment of fungal aerosols in a public library with natural ventilation

et al. 2022

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“…Regarding the presence of spores throughout the day, we observe a repeated trend for Fusicladium and Colletotrichum, with a lower number of spores during the first hours of the day that gradually increases until reaching the maximum in the bi-hourly band of 11 to 12 a.m. From this moment, the tendency is to a decrease of the spore concentrations. On the other hand, the highest Pseudocercospora concentrations were in the afternoon, between 17 and 18 h. Several authors pointed higher spore concentration during diurnal hours for other phytopathogenic spores as Alternaria and Penicillium airborne spores [70] or Curvularia [71] in cultivations of Cuba. In crops such as Vitis vinifera, the main phytopathogens such as Botrytis and Erysiphe registered the highest concentrations in the early afternoon while in the case of Plasmopara at dawn [72].…”

Section: Discussionmentioning

confidence: 99%

Fungal Phytopathogenic Spore First Assessment in an Olive Orchard of Northwestern Spain

et al. 2022

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The most common fungal diseases of Olea europaea are olive leaf spot (Fusicladium oleagineum), anthracnose (Colletotrichum spp.) and cercospora leaf spot (Pseudocercospora cladosporioides). To know the fungal load during the vegetative olive cycle, an aerobiological and phenological study was conducted in an olive grove in North-West Spain. For the aerobiological study, the Spanish Aerobiological Network protocol was followed using a Hirst-type spore trap. The goal of the study was to assess the spore concentrations in the atmosphere of the olive grove and their relationship with the meteorological parameters by applying statistical procedures, including a Cluster analysis, Spearman’s correlation test and PCA analysis. The most abundant spores belong to Fusicladium, registering the double of values than Colletotrichum and Pseudocercospora. The hours with the highest spores’ presence were from 11:00 to 12:00 for Fusicladium and Colletotrichum, and from 17:00 to 18:00 for Pseudocercospora. The Spearman’s and PCA test showed a positive association between temperature and relative humidity with the spores’ concentrations. The combination of meteorological, phenological and aerobiological parameters is a useful tool to understand the ecological behavior of the considered phytopathogenic fungal spores in order to develop futures strategies for the integrated management of fungal olive diseases in areas at the limit of this tree distribution.

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“…This genus includes a large number of species that may be responsible for allergic syndromes, intoxications, chronic infections, and acute invasive diseases, particularly in people with compromised immune systems [ 8 , 9 , 10 ]. The ability to grow and sporulate on various organic substrates allows the widespread development of Aspergillus in many geographical areas [ 11 , 12 , 13 , 14 , 15 ]. The carbon sources available for these fungi include damaged building materials, textiles, various food products, and dust [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic Identification, Diversity, and Richness of Aspergillus from Homes in Havana, Cuba

et al. 2021

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Aspergillus is one of the most common fungal genera found indoors; it is important because it can cause a wide range of diseases in humans. Aspergillus species identification is based on a combination of morphological, physiological, and molecular methods. However, molecular methodologies have rarely been used for the identification of environmental isolates of Aspergillus in Cuba. Therefore, the objective of this work was to identify the species of the genus Aspergillus obtained from houses in Havana, Cuba, through the construction of phylogeny from a partial sequence of the benA gene region, and to analyze the diversity and richness of Aspergillus in the studied municipalities. Isolates of Aspergillus spp. included in this study presented the typical macro- and micromorphology described for the genus. According to this polyphasic characterization, A. niger, A. flavus, A. welwitschiae, A. heteromorphus, A. sydowii, A. tamarii, A. fumigatus, A. clavatus, and A. tubingensis were the most abundant species. Most of the identified species constitute new records for outdoor and indoor environments in Cuba and contribute to the knowledge of fungal biodiversity in the country. These results constitute an alert for the health authorities of the country, since prolonged exposure of the inhabitants to Aspergillus spores can cause severe persistent asthma, among other diseases.

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Assessment of airborne Curvularia propagules in the atmosphere of Havana, Cuba

Cited by 4 publications

References 44 publications

Assessment of fungal aerosols in a public library with natural ventilation

Assessment of fungal aerosols in a public library with natural ventilation

Fungal Phytopathogenic Spore First Assessment in an Olive Orchard of Northwestern Spain

Phylogenetic Identification, Diversity, and Richness of Aspergillus from Homes in Havana, Cuba

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