Image Number: 1402052

Plants are usually predisposed to this fungus disease by certain practices such as the application of contact sucker control materials during hot weather. Irregular black lesions may extend from the soil surface to the top of the plant. A basal rotting of plants may occur, although roots are usually not affected . Stalks cut longitudinally exhibit appreciable pith and wood decay. In advanced stages, the pith may completely disappear resulting in a hollow stalk. Leaves of affected plants turn yellow, droop, and die.
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Image location:
United States


Kingdom: Fungi
Phylum: Ascomycota
Class: Incertae sedis
Order: Incertae sedis
Family: Incertae sedis
Genus: Macrophomina
Subject: Macrophomina phaseoli (Maubl.) S.F. Ashby


Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Solanales
Family: Solanaceae
Genus: Nicotiana
Subject: Nicotiana tabacum (flue-cured type) L.
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Image uploaded:
Sunday, March 10, 2002
Image last updated:
Friday, February 25, 2011