ring rot fungus

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Related to ring rot fungus: dry rot fungus, wet rot fungus
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Noun1.ring rot fungus - fungus causing soft watery rot in fruits and vegetables and rings of dry rot around roots of sweet potatoes
genus Rhizopus - a genus of rot-causing fungi having columnar hemispherical aerial sporangia anchored to the substrate by rhizoids
rhizoid - any of various slender filaments that function as roots in mosses and ferns and fungi etc