A Species of Endogone from Corn Causing Vesicular-Arbuscular Mycorrhiza

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Abstract
An Endogone causing vesicular-arbuscular mycorrhiza has been found on maize in Illinois.. Extra-matrical chlamydospores were common in soil collected from around maize roots. Maize inoculated with chlamydospores developed typical vesicular-arbuscular mycorrhiza, and sporocarps and extra-matrical chlamydospores were produced on hyphae attached to infected roots. Sporocarps developed abundantly on roots of inoculated plants in sterilized soil, but they were rarely found in field soil. The main source of inoculum in field soil appears to be extra-matrical chlamydospores. The fungus also produced vesicular-arbuscular mycorrhiza in roots of strawberry, onion, red clover and soybeans.

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