black-stem rust

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A disease that affects a wide range of cereals and other grasses. Symptoms include the appearance on stems and leaves of patches of reddish-brown spores. The causal agent is a fungus, Puccinia graminis; this organism requires two hosts to complete its life cycle, the other host being the barberry (Berberis).

Subjects: Plant Sciences and Forestry — Ecology and Conservation.

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