Fusarium circinatum

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symptoms of infection by Fusarium circinatum on Pinus radiata (click on image to enlarge it)
Author: Joseph O'Brien, USDA Forest Service, Bugwood.org
Source: Wikimedia Commons

Fusarium circinatum Nirenberg & O'Donnell 1998 - (pitch canker of pines)

The fungus causes pitch canker of pines, resulting in plant death in nurseries and mature trees through heavy infections of the stem or stem breaking. It is wide-spread around the world. The symptoms in nurseries are mainly damping-off and wilting of the seedlings. In mature trees, infections lead to heavy exudation of resin. The fungus has been also found infecting grasses (without causing symptoms) and causing ear rot of corn.

The disease was first noticed in North America where the fungus was originally described as Fusarium subglutinans f.sp. pini in 1991. It has been recorded since 2004 from European countries. The fungus is related to Fusarium fujikuroi. Reliable identification requires DNA analysis or mating type studies.

Vernacular names
• English: pitch canker disease of pines
• Français: chancre fusarien du pin

For a review and diagnostic procedures see the respective EPPO datasheet (2019).

Fusarium subglutinans f.sp. pini
Gibberella circinata (teleomorph synonym)