Evolution in response to prophage activation attenuates the virulence of culturable <i>Serratia symbiotica</i> relatives of aphid endosymbionts.

This increased virulence was also only marginally significant at best ( P = 0.12 and P = 0.073, respectively), A faster growth rate or higher final cell density for a given evolved strain when cultured in vitro might generally lead to trade-offs that make it less virulent to aphids ( 49 – 51 ).

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