Abstract
Cytospora species are cosmopolitan, and commonly associated with dieback and canker diseases of numerous hosts. In the present study, isolates were collected and identified from diseased branches or twigs of Ulmus pumila in northern China. The morphological characteristics and multilocus phylogeny (act1, ITS, LSU, tefA and tubB) indicate four distinct lineages with high branch support, i.e., C. carbonacea, C. chrysosperma, C. ribis and C. pruinopsis sp. nov. Cytospora pruinopsis is distinguishable from the other Cytospora spp. on Ulmus by its single conidiomatal locule with one ostiole per disc, and its smaller conidia. This study represents the first attempt to clarify the taxonomy of Cytospora spp. associated with canker and dieback symptoms of Ulmus pumila in northern China.
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Acknowledgments
This study is financed by National Natural Science Foundation of China (Project No.: 31170603). We are grateful to Chungen Piao and Minwei Guo (China Forestry Culture Collection Center [CFCC], Chinese Academy of Forestry, Beijing) for support of strain preservation during this study. Thanks are also due to Yongping An (Forest Diseases and Insect Pests Prevention Station of Guyuan, Ningxia, China) and Huaizhang Yao (Environment Protection Bureau of Yulin Economic Development Area, Shaanxi, China) for assistance with specimen collection during this study.
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Yang, Q., Fan, XL., Crous, P.W. et al. Cytospora from Ulmus pumila in Northern China. Mycol Progress 14, 74 (2015). https://doi.org/10.1007/s11557-015-1096-1
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DOI: https://doi.org/10.1007/s11557-015-1096-1