Some bacteria can travel from one continent to another ‘hidden’ in atmospheric dust, according to a new study which says that these germs can affect not only human and animal health, but also climate and ecosystems. Can.
The research, published in the journal Atmospheric Research, uncovered the mystery of the transport of microorganisms across continents, which can be ingested by humans through giant atmospheric particles called eyebrows.
According to scientists, including those at the University of Granada (UGR) in Spain, these aerosols act as a “launch vehicle” for bacteria, and can pose a risk of disease transmission across continents.
He reported that iberulites are huge atmospheric biorosols made of many minerals, measuring an average of one hundred microns. While these bioaerosols were discovered in 2008, scientists said the mechanisms by which bacteria are involved in the formation of atmospheric iberulites remain unknown.
In the current study, researchers analyzed atmospheric dust deposits in the city of Granada, Spain. They found that the composition of these deposits was heterogeneous, consisting mainly of clay, quartz and carbonate minerals and to a lesser extent iron oxides.
In addition to these minerals, scientists have found bacteria, silicon-containing algae called diatoms, and other single-celled organisms formed a biological component. He said that aerosols also contain broccosomes which are microscopic granules that are secreted by pests like weeds.
According to the study, dust originated from the Sahara desert in north-northeast Africa and local soil with evidence of atmospheric interactions between these components and clouds.
Analyzing iberulites, the researchers found that they formed as a result of chemical and physical relationships between dust grains, microorganisms from Saharan clays that initiated the formation of aerosols, and water-vapor molecules from clouds. The study mentions that water droplets collect dust particles of varying sizes in their interior along with bacteria.
Alberto Molinaro Garcia, co-author of the UGR study, said, “Bacteria can survive in iberites because they are nutrient-rich, a nutrient-rich microhabitat, and they protect bacteria from ultraviolet radiation.”
Garcia said, “This is demonstrated by the bacterium polymeric, which acts as a ‘glue’ between the mucus-like mineral particles of the mucus, which prevents their disagreement and their resistance to turbulent events in the atmosphere. Enhances. “
According to the researchers, Iberulites help microorganisms travel great inter-continental distances on atmospheric currents such as the Saharan Air Layer (SAL).
They believe that these aerosols can exist around the world, mainly in areas where dust comes from desert areas.
(This story is published from a wire agency feed without textual modifications.)
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