This Week in Science

In Science this week, a team researchers from the University of California, Riverside, and elsewhere report on the discovery of fungal small RNAs that block a host plant's defense mechanisms by hijacking its RNAi pathways. The investigators studied the fungus Botrytis cinerea, which causes gray mold disease in certain plants, and identified 832 small RNAs that invaded the cells of Arabidopsis and tomato plants when they were infected by the pathogen.

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