transverse oak canker caused the pathogen pseudomonas quercina affected trunk quercus petraea tree forest |
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Plants in Germany. Transverse oak canker, caused by the pathogen Pseudomonas quercina, affected the trunk of a Quercus petraea tree in a forest in February. Quercus petraea, the sessile oak, Cornish oak, Irish- or durmast oak, is a species of oak tree. Berlin, Germany, Europe. |
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