Survival and Colonization Potential ofFusarium moniliformevar.subglutinansin Soil

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Abstract
Conidia of F. moniliforme var. subglutinans were short-lived in soil in the absence of host tissues; they survived 6-13 wk depending on soil moisture and incubation temperature. Conidia colonized sterilized pineapple [Ananas comosus] stem and leaf segments that were previously mixed in soil of 10% moisture content, which enabled the fungus to survive at least 12 mo. Free conidia generally survived better in air-dried soil than in soil adjusted to 10, 25 or 35% moisture content and survived better at soil temperatures of 4 and 18.degree. C than at 25 and 30.degree. C. F. moniliforme var. subglutinans also colonized sterilized dead stem segments of corn [Zea mays], bean [Phaseolus vulgaris] and soybean [Glycine max], indicating that the fungus mainly exists by colonizing plant tissues and less frequently as conidia in a field.

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