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Un virus vampire qui s'attache à un autre !

Un moment intéressant a été capturé par des scientifiques du Maryland. Ils ont observé un virus satellite (violet) s'accrochant au cou d'un virus auxiliaire (bleu).

Ces virus particuliers infectent les bactéries, et le plus petit, le virus violet, dépend du bleu pour répliquer son ADN.

Selon les chercheurs, 80% des bactériophages auxiliaires avec un satellite sont accrochés à eux, certains montrant même des traces de morsures.

Cette découverte révolutionnaire pourrait changer notre compréhension des stratégies antivirales.

Les virus satellites, parfois mutilateurs, parfois boosters d'efficacité, promettent des découvertes passionnantes dans le monde microscopique.

Source : Washington Post

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Transcript
00:00 A vampire virus that attacks other viruses to replicate.
00:02 Scientists have discovered for the first time a virus attached to another.
00:05 Using an electronic transmission microscope,
00:07 researchers have captured a purple satellite virus attaching to the neck of an auxiliary blue virus.
00:11 The two studied viruses have bacterial characteristics,
00:14 which means they infect bacteria.
00:16 The purple virus, smaller, needs the blue virus to replicate its DNA inside the high cells
00:20 because it does not have mechanisms to do so autonomously.
00:23 The discovery was made by a team of researchers from Maryland during an environmental sampling test.
00:28 According to them, about 80% of auxiliary bacteriophages had a satellite attached to the neck.
00:32 Some of them even had bite marks indicating previous interactions with the satellites.
00:37 Studies suggest that satellite viruses attach to their auxiliaries as part of a survival strategy.
00:41 This attachment ensures that the satellite enters the high cell at the same time as its auxiliary.
00:45 Regarding their usefulness, purple satellites have a direct impact on their auxiliary viruses,
00:48 mutilating them generally, but sometimes making killers more effective.
00:52 Purple satellites have the potential to transform the way researchers understand antiviral strategies.
00:56 But there is still a lot to learn about them.
00:58 If you liked the subject and want to know more about the recent scientific effects, subscribe to Omniscience.

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