Image Number: 1402055

This bacterial soft rot usually first appears following topping and suckering. Although the bacteria can invade the stalk through any wound, they usually enter through the break at the top. The pith rapidly turns brown and collapses in a watery rot. A foul odor is evident as the stalks become hollow. Leaves adjacent to the rotting pith will wilt. The rot may extend into the leaves through the midrib. The midribs turn black and the leaves droop. If infected leaves are placed in the barn, soft rot may continue to develop as barn rot.
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United States


Kingdom: Monera
Phylum: Proteobacteria
Class: Gammaproteobacteria
Order: Enterobacteriales
Family: Enterobacteriaceae
Genus: Pectobacterium
Subject: Pectobacterium carotovorum ssp. carotovorum (Jones 1901) Hauben et al. 1999 emend. Gardan et al. 2003


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, May 6, 2011