Bacterial canker of poplar

Disease type
  • Latin : Xanthomonas populi 
  • English: Bacterial canker of poplar
  • French: Brûlure bactérienne du peuplier
  • Order/Class: Stilbellales
Description

Distribution

This species is not found in Canada

Micro-habitat(s)

Branch, Bud, Trunk, Twig

Damage, symptoms and biology

Symptoms of the disease vary with the affected clone, ecological conditions and the physiological state of the diseased tree. Typically, many buds will fail to open on young branches in the spring, and symptoms become visible at the bud bases as slightly swollen areas with superficial cracks that exude a dense, greyish mucoid ooze.

Information on host(s)

Main host(s)

Eastern cottonwood, poplars / aspens / cottonwoods, trembling aspen

Photos
  • Xanthomonas populi

    Artificially inoculated stem

  • Xanthomonas populi

    Canker

  • Xanthomonas populi

    Infected trees in northern France

  • Xanthomonas populi

    Infected trees in northern France

  • Xanthomonas populi

    Infected trees in northern France

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