First report of Cryptosphaeria pullmanensis as causal agent of Cryptosphaeria canker of Populus nigra in Iran |
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| Authors: | M Mehrabi R Hemmati F P Trouillas |
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| Institution: | 1. Department of Plant Protection, Faculty of Agriculture, University of Zanjan, Zanjan, Iran;2. Department of Plant Pathology, University of California, Davis, CA, USA |
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| Abstract: | A diatrypaceous fungus was isolated consistently from cankers on Populus nigra trees showing dieback symptoms in Kohgiluyeh Boyer‐Ahmad, Zanjan and Esfahan provinces in Iran. Morphological characteristics and phylogenetic analyses of the ITS region of the rDNA identified the taxon as Cryptosphaeria pullmanensis. Pathogenicity tests conducted in potted 3‐month‐old cuttings of P. nigra confirmed Koch's postulates and revealed that C. pullmanensis caused canker on this host. This is the first report of C. pullmanensis causing a canker disease on P. nigra in Iran. |
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