Genome of Irish potato famine pathogen decoded

An international research team has decoded the genome of the notorious organism that triggered the Irish potato famine in the mid-19th century and now threatens this season�s tomato and potato crops across much of the US. The study reveals an unusually large genome size � more than twice that of closely related species � and an extraordinary genome structure, which together appear to enable the rapid evolution of genes, particularly those involved in plant infection.

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