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Revolutionary discovery of a distributed virus in legumes

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https://www.theatlantic.com/science/arch...us/584884/

INTRO: It is a truth universally acknowledged among virologists that a single virus, carrying a full set of genes, must be in want of a cell. A virus is just a collection of genes packaged into a capsule. It infiltrates and hijacks a living cell to make extra copies of itself. Those daughter viruses then bust out of their ailing host, and each finds a new cell to infect. Rinse, and repeat. This is how all viruses, from Ebola to influenza, are meant to work.

But Stéphane Blanc and his colleagues at the University of Montpellier have shown that one virus breaks all the rules.

Faba bean necrotic stunt virus, or FBNSV for short, infects legumes, and is spread through the bites of aphids. Its genes are split among eight segments, each of which is packaged into its own capsule. And, as Blanc’s team has now shown, these eight segments can reproduce themselves, even if they infect different cells. FBNSV needs all of its components, but it doesn’t need them in the same place. Indeed, this virus never seems to fully comes together. It is always distributed, its existence spread between among capsules and split among different host cells.

“This is truly a revolutionary result in virology,” says Siobain Duffy of Rutgers University, who wasn’t involved in the study. “Once again, viruses prove that they’ve had the evolutionary time to try just about every reproductive strategy, even ones that are hard for scientists to imagine.”

MORE: https://www.theatlantic.com/science/arch...us/584884/
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