Airborne Algae and Cyanobacteria Occurrence and Related Health Effects

Genitsaris, Savvas; Kormas, Konstantinos Ar.; Moustaka‐Gouni, Maria

doi:10.2741/e285

Cited by 69 publications

(19 citation statements)

References 103 publications

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“…On the basis of our current knowledge, the presence of Vampirovibrio in the CF lung implies the presence of Chlorella . Because Chlorella is frequent in the air, particularly in freshwater environments ( 51 , 52 ), it can easily be introduced into the CF lung by the extremely frequent aerosol inhalation therapies ( 53 ) or assisted ventilation used by these patients. The existence of algae in the CF lung has not yet been explored; however, we can speculate on the possibility that the dense microbiota of the lung in CF patients might produce mutually beneficial interactions with Chlorella , as has been described for other bacterial species ( 54 ).…”

Section: Discussionmentioning

confidence: 99%

Individual Patterns of Complexity in Cystic Fibrosis Lung Microbiota, Including Predator Bacteria, over a 1-Year Period

Caballero

Vida

Cobo

et al. 2017

mBio

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Cystic fibrosis (CF) lung microbiota composition has recently been redefined by the application of next-generation sequencing (NGS) tools, identifying, among others, previously undescribed anaerobic and uncultivable bacteria. In the present study, we monitored the fluctuations of this ecosystem in 15 CF patients during a 1-year follow-up period, describing for the first time, as far as we know, the presence of predator bacteria in the CF lung microbiome. In addition, a new computational model was developed to ascertain the hypothetical ecological repercussions of a prey-predator interaction in CF lung microbial communities. Fifteen adult CF patients, stratified according to their pulmonary function into mild (n = 5), moderate (n = 9), and severe (n = 1) disease, were recruited at the CF unit of the Ramón y Cajal University Hospital (Madrid, Spain). Each patient contributed three or four induced sputum samples during a 1-year follow-up period. Lung microbiota composition was determined by both cultivation and NGS techniques and was compared with the patients’ clinical variables. Results revealed a particular microbiota composition for each patient that was maintained during the study period, although some fluctuations were detected without any clinical correlation. For the first time, Bdellovibrio and Vampirovibrio predator bacteria were shown in CF lung microbiota and reduced-genome bacterial parasites of the phylum Parcubacteria were also consistently detected. The newly designed computational model allows us to hypothesize that inoculation of predators into the pulmonary microbiome might contribute to the control of chronic colonization by CF pathogens in early colonization stages.

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Section: Discussionmentioning

confidence: 99%

Individual Patterns of Complexity in Cystic Fibrosis Lung Microbiota, Including Predator Bacteria, over a 1-Year Period

Caballero

Vida

Cobo

et al. 2017

mBio

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“…However, in the present study, in the urban area of Thessaloniki, only 8 airborne species were detected in simultaneous examinations of microeukaryotes in the nearby aquatic systems -and from them, only 5 were found from Thermaikos Bay. One possible explanation for fewer marine microbial colonists is that the airborne marine microeukaryotes were less diverse than their freshwater counterparts during the whole period of the (Genitsaris et al (2011)). A local water source for the majority of airborne microeukaryotes is not likely in the present study, pointing towards a more possible long-distance dispersal of microorganisms of remote water origin (Finlay & Clarke 1999).…”

Section: Discussionmentioning

confidence: 99%

Airborne microeukaryote colonists in experimental water containers: diversity, succession, life histories and established food webs

Genitsaris¹,

Moustaka‐Gouni

Kormas³

2011

Aquat. Microb. Ecol.

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Airborne freshwater and marine microeukaryotes in the city of Thessaloniki, situated in Thermaikos Bay, Greece, were examined as sources of colonization of experimental water containers during the period autumn 2007 to spring 2008. The microeukaryote composition of the plankton in the nearby aquatic systems (distance <1 km) was also examined. Airborne microeukaryotes were examined by morphology and 18S rRNA gene diversity. A total of 29 species of airborne microeukaryotes were identified, most of them commonly observed in aerobiological studies. Airborne organisms of only 8 taxa were also detected in the nearby aquatic systems. The algae Haematococcus lacustris, a Chlorella-like taxon, and Scenedesmus cf. obliquus, the heterotrophic nanoflagellates (HNF) Bodo sp., Cafeteria minuta and Rynchomonas nasuta, and the ciliate Pattersoniella vitiphila were present in all 3 seasons, indicating capabilities of successful dispersal and colonization under a wide range of meteorological conditions. Rapid colonization of the water containers by the microeukaryotes occurred at the beginning of the experiment, but the rate of colonization quickly stabilized. The initial phase of colonization was dominated by HNF; subsequently, members of the Chlorophyta were the dominant autotrophs. The heterotrophic and autotrophic colonists established similar food webs in all 3 seasons, with P. vitiphila being the common top predator. KEY WORDS: Airborne microeukaryotes · Colonization · Diversity · Food web · Haematococcus · Pattersoniella Resale or republication not permitted without written consent of the publisherAquat Microb Ecol 62: [139][140][141][142][143][144][145][146][147][148][149][150][151][152] 2011 which facilitate their transport through air and by animal vectors. It also seems that the observed biogeography of aquatic microeukaryotes is influenced by the method of study: species identified solely by morphology seem to be widely distributed, but whether such species come from the same genetic populations remains debatable (Dolan 2005). Thus, there is a demand for combining information on the distribution of microeukaryotes based on morphology and phylogeny with information on life cycles and colonization potential in order to unravel biogeographical trends.The majority of airborne algae belong to the Chlorophyta (Schlichting 1964, Lopez-Bautista et al. 2007, see also review by Sharma et al. 2007). This group of autotrophs forms the bulk of the community of aeroalgae in most biogeographic regions, as proposed by Roy-Ocotla & Carrera (1993). Even deserts are found to be hotspots for chlorophyte biodiversity (Lewis & Lewis 2005). The few available studies that focus on airborne protozoa from different habitats and regions reveal some common taxa in their lists (Schlichting 1964, Schlichting 1969, Smith 1973, Rivera et al. 1992, Rogerson & Detwiler 1999) but they do not provide insight on the fate and the interactions of these airborne microorganisms. Chrisostomou et al. (2009), in a study of air-dispersed phytoplan...

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“…Airborne dispersal of microalgae occur at very low concentration in the atmosphere and their occurrence is little known due to technical limitations in investigating microalgae from air samples (Tesson et al, 2016). However, recent studies showed that microalgae can actually be air transported and form a consistent component of airborne biological particulate, depending on the environmental conditions and the local deposition rates (Genitsaris et al, 2011). Furthermore, both the O. nigro-viridis and the A. cylindrica are cyanobacteria whose tissue can be mineralized with calcium carbonate (Benzerara et al, 2014).…”

Section: Bacteriamentioning

confidence: 99%

The Microbiome of Leonardo da Vinci’s Drawings: A Bio-Archive of Their History

Piñar

Sclocchi²,

Pinzari³

et al. 2020

Front. Microbiol.

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Seven emblematic Leonardo da Vinci’s drawings were investigated through third generation sequencing technology (Nanopore). In addition, SEM analyses were carried out to acquire photographic documentation and to infer the nature of the micro-objects removed from the surface of the drawings. The Nanopore generated microbiomes can be used as a “bio-archive” of the drawings, offering a kind of fingerprint for current and future biological comparisons. This information might help to create a biological catalog of the drawings (cataloging), a microbiome-fingerprint for each single analyzed drawing, as a reference dataset for future studies (monitoring) and last but not least a bio-archive of the history of each single object (added value). Results showed a relatively high contamination with human DNA and a surprising dominance of bacteria over fungi. However, it was possible to identify typical bacteria of the human microbiome, which are mere contaminants introduced by handling of the drawings as well as other microorganisms that seem to have been introduced through vectors, such as insects and their droppings, visible through the SEM analyses. All drawings showed very specific bio-archives, but a core microbiome of bacteria and fungi that are repeatedly found in this type of material as true degraders were identified, such as members of the phyla Proteobacteria, Actinobacteria, and Firmicutes among bacteria, and fungi belonging to the classes Sordariomycetes and Eurotiomycetes. In addition, some similarities were observed that could be influenced by their geographical location (Rome or Turin), indicating the influence of this factor and denoting the importance of environmental and storage conditions on the specific microbiomes.

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Airborne Algae and Cyanobacteria Occurrence and Related Health Effects

Cited by 69 publications

References 103 publications

Individual Patterns of Complexity in Cystic Fibrosis Lung Microbiota, Including Predator Bacteria, over a 1-Year Period

Individual Patterns of Complexity in Cystic Fibrosis Lung Microbiota, Including Predator Bacteria, over a 1-Year Period

Airborne microeukaryote colonists in experimental water containers: diversity, succession, life histories and established food webs

The Microbiome of Leonardo da Vinci’s Drawings: A Bio-Archive of Their History

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