Erwinia carotovora subsp. carotovora (syn. Pectobacterium carovora)

Bacterial soft rot, bacterial stem rot

General

Erwinia carotovora subsp. carotovora has recently been renamed Pectobacterium carotovora. It is one of the pectolytic bacteria causing extensive bacterial rots (bacterial soft rot, bacterial stem rot).

Life cycle and appearance of Bacterial soft rot, bacterial stem rot

Erwinia carotovora subsp. carotovora or Pectobacterium carovora is very common, but does not often reach epidemic population densities. It can survive as epiphytic bacteria on various plants or in the soil in low densities. It has also been found in the gut of insects, possibly spreading from decaying vegetation to the growing crop that way. Erwinia carotovora subsp. carotovora or Pectobacterium carovora infects plants through fresh wounds, for example pruning wounds. It cannot infect healthy green leaves, but can grow in senescent leaves and from there grow through the petiole to the main stem through the xylem vessels. High humidity is required for disease development. Erwinia carotovora subsp. carotovora or Pectobacterium carovora can also be found as secondary pathogen in plants that are infected by other pathogens. The bacteria that causes black leg in potato is a different subspecies.

How to prevent Bacterial soft rot, bacterial stem rot