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Researchers at the Max Planck Institute for Biology Tübingen have demonstrated that giant viruses can permanently integrate into the genome of a multicellular host organism — in this case, seaweed — rather than existing solely as free-living particles. These integrated viruses can remain dormant across multiple generations and reactivate under specific conditions. The findings, published in Nature Microbiology, fundamentally challenge the prevailing understanding of giant virus biology and introduce a new model organism for studying viral latency in complex, multicellular hosts.
Why it matters
Understanding how viruses lie dormant within host genomes and reactivate has broad implications for virology, evolutionary biology, and potentially for human health, as similar latency mechanisms may operate in other organisms. This research also opens new avenues for studying how viral elements shape the evolution of multicellular life.
Researchers at the Max Planck Institute for Biology Tübingen have shown that giant viruses long thought to exist only as fleeting, free-living particles that can embed themselves permanently in the genome of a multicellular host, lie dormant for generations and then wake up on demand. Their study, published in Nature Microbiology, challenges fundamental assumptions about how giant viruses operate and establishes a powerful new model for studying viral latency in complex organisms.
Source: How hidden viruses wake up inside seaweed and pass on to future generations