Dothistroma needle blight

Dothistroma needle blight - <em>Mycosphaerella</em>-infected needles with discoloured tips and green needle bases
  • Latin name: Mycosphaerella pini Rost. in Munk
  • French name: Brûlure en bandes rouges
  • Division: Ascomycota
  • Class: Capnodiales
Description

Micro-habitat(s)

Needle

Distribution

Canada

Damage, symptoms and biology

Where environmental conditions favour infection, this disease can spread rapidly and cause significant damage. Trees can be defoliated within weeks, and mortality is common with repeated attacks.

Other information

This disease is also commonly known as red band needle blight. The life-cycle is completed in 1 year on the coast but requires 2 years in most other parts of the continent. The fungus causing the disease is most commonly observed in its conidial state (Dothistroma septospora).

Canadian Forest Service Publications

Dothistroma needle blight

Information on host(s)

Main host(s)

Austrian pine, bishop's pine, Jeffrey pine, maritime pine, Monterey pine, ponderosa pine, red pine, scots pine, shore pine, shortleaf pine, western white pine

Photos
  • Dothistroma needle blight Lodgepole pine plantation affected by Mycosphaerella pini in east-central B.C
  • Dothistroma needle blight Lower crown discoloration typical of Mycosphaerella-infected western white pine
  • Dothistroma needle blight Red banding symptoms on infected needles
  • Dothistroma needle blight Mycosphaerella-infected needles with discoloured tips and green needle bases
  • Dothistroma needle blight Austrian pine infected by Mycosphaerella pini, the causal agent of red band needle blight.
  • Dothistroma needle blight One type of fruiting body of Mycosphaerella pini, the cause of red band needle blight.
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