Plant Pathology (2005) 54, p. 580 (Green)

S. Green (2005)
First report of Septoria betulae causing leaf spot of birch in the UK
Plant Pathology 54 (4), 580-580
Abstract: During a survey in Scotland during a number of downy birch (Betula pubescens) trees were found to have unusual leaf spots. The spots were small (up to 3-4 mm in diameter), although frequently coalescing, circular-to-irregular and ochre-to-pale brown, with darker margins. On the surface of these spots were numerous black pycnidia, which produced hyaline conidia, 4-7 septate, generally filiform although tapering at one end, measuring 45-75 x 2-3 µm. An isolate of this fungus was formally identified as Septoria betulae by the Centraalbureau Voor Schimmelcultures (CBS), Utrecht, The Netherlands. Pathogenicity of the isolate was confirmed by re-inoculation.
(The abstract has been supplied by the author or ISPI and is excluded from the Creative Commons licence.)
Link to article at publishers website
Database assignments for author(s): Sarah Green

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Sphaerulina betulae	Birch (Betula)	United Kingdom