Mycobiology

The Korean Society of Mycology (한국균학회)
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Cytospora elaeagnicola sp. nov. Associated with Narrow-leaved Oleaster Canker Disease in China

  • Zhang, Linxuan (The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University) ;
  • Alvarez, Lourdes V. (Department of Biology, College of Science, Polytechnic University of the Philippines) ;
  • Bonthond, Guido (GEOMAR Helmholtz Centre for Ocean Research Kiel) ;
  • Tian, Chengming (The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University) ;
  • Fan, Xinlei (The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University)
  • Received : 2018.12.05
  • Accepted : 2019.06.13
  • Published : 2019.09.30
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Abstract

Cytospora is a genus including important phytopathogens causing severe dieback and canker diseases distributed worldwide with a wide host range. However, identification of Cytospora species is difficult since the currently available DNA sequence data are insufficient. Aside the limited availability of ex-type sequence data, most of the genetic work is only based on the ITS region DNA marker which lacks the resolution to delineate to the species level in Cytospora. In this study, three fresh strains were isolated from the symptomatic branches of Elaeagnus angustifolia in Xinjiang Uygur Autonomous Region, China. Morphological observation and multi-locus phylogenetic analyses (ITS, LSU, ACT and RPB2) support these specimens are best accommodated as a distinct novel species of Cytospora. Cytospora elaeagnicola sp. nov. is introduced, having discoid, nearly flat, pycnidial conidiomata with hyaline, allantoid conidia, and differs from its relatives genetically and by host association.

Keywords

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