Image Number: 1402039

Descriptor:
Symptoms
Description:
Plants cut longitudinally reveal brown to black discoloration of the pith, which is often separated into discs. Discing may not occur in resistant varieties and only a small portion of the pith may be discolored.
Image type:
Field

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Image location:
United States

Subject

Kingdom: Chromista
Phylum: Oomycota
Class: Oomycetes
Order: Peronosporales
Family: Pythiaceae
Genus: Phytophthora
Subject: Phytophthora nicotianae Breda de Haan

Host

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Solanales
Family: Solanaceae
Genus: Nicotiana
Subject: Nicotiana tabacum (flue-cured type) L.
Node Affiliation:
Image uploaded:
Sunday, March 10, 2002
Image last updated:
Tuesday, May 17, 2011