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Nature 431, 516-517 (30 September 2004) | doi:10.1038/431516a; Published online 29 September 2004

Plant disease:  Underground life for rice foe

Barbara Valent1

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We still have much to learn about the world's chief disease of rice — rice blast. That's clear from the finding that the culprit not only infects aerial plant tissues but can also invade roots like a typical root pathogen.

The diverse fungi that threaten the world's food crops are generally divided into those that infect plant structures above the ground and those that infect roots. Fungi that attack aerial plant structures use a few characteristic developmental pathways, and root-invading fungi — including symbiotic species that can be beneficial to plants — use different developmental routes.

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