Meaning of ring rot

ring' rot"

Pronunciation: [key]
— Plant Pathol. Plant Pathol.
  1. a disease of potatoes, characterized by wilted foliage and rotting of the ring of vascular bundles in the tubers, caused by a bacterium, Corynebacterium sepedonicum.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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