powdery scab
(redirected from Spongospora subterranea)powdery scab
[′pau̇d·ə·rē ′skab] (plant pathology)
A fungus disease of potato tubers caused by Spongospora subterranea and characterized by nodular discolored lesions, which burst and expose masses of powdery fungus spores.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.