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A gigantic virus known as Jyvaskylavirus has been isolated for the first time in Finland by researchers at the Nanoscience Center at the University of Jyväskylä. The finding demonstrates that large viruses are more prevalent in northern areas than previously thought. It also shows how many structures have yet to have their origins and purposes thoroughly examined.
There are viruses everywhere. The majority of naturally occurring viruses can be crucial to the health of ecosystems and are safe for humans. Giant viruses that can resemble bacteria in size have been found in recent years. Amoebas and other microscopic species are infected by these viruses. The life cycles and distribution of the majority of the gigantic viruses discovered thus far are poorly understood, and they have been detected throughout Europe and South America.
The study is the first to isolate large viruses from Finland; it began at the University of Jyväskylä and published in eLife. When environmental samples and a culture of the amoeba Acanthamoeba castellanii were mixed together, the enormous virus—known as Jyvaskylavirus—was found. About twice as large as influenza or coronavirus, the virus particle has a diameter of 200 nanometers.
The Jyvaskylavirus’s genome and structure were identified by the researchers through an international partnership, and it was discovered that it shared similarities with Marseilleviruses that had previously been isolated from France. Environmental samples also revealed the presence of several novel big viruses.
The discovery suggests that even in northern locations, large viruses are more common in soil and water than previously thought.
The finding will provide new perspectives on the structure of gigantic viruses and aid in the understanding of the relationships between microorganisms and viruses, which control the populations of all living things.
Sources:
Gabriel Magno de Freitas Almeida et al. (2025). Genomic and structural insights into Jyvaskylavirus, the first giant virus isolated from Finland, eLife. DOI: 10.7554/eLife.103492.3
https://phys.org/news/2025-04-giant-virus-finland.html
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