Families and genera of diaporthalean fungi associated with canker and dieback of tree hosts

Xin-Lei Fan, Jadson D. P. Bezerra, Cheng-Ming Tian, P.W. Crous

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Abstract

In this study we accept 25 families in Diaporthales based on phylogenetic analyses using partial ITS, LSU, rpb2 and tef1-α gene sequences. Four different families associated with canker and dieback of tree hosts are morphologically treated and phylogenetically compared. These include three new families (Diaporthostomataceae, Pseudomelanconidaceae, Synnemasporellaceae), and one new genus, Dendrostoma (Erythrogloeaceae). Dendrostoma is newly described from Malus spectabilis, Osmanthus fragrans and Quercus acutissima having fusoid to cylindrical, bicellular ascospores, with three new species namely D. mali, D. osmanthi and D. quercinum. Diaporthostomataceae is characterised by conical and discrete perithecia with bicellular, fusoid ascospores on branches of Machilus leptophylla. Pseudomelanconidaceae is defined by conidiogenous cells with apical collarets and discreet annellations, and the inconspicuous hyaline conidial sheath when mature on Carya cathayensis, compared to morphologically similar families Melanconidaceae and Juglanconidaceae. Synnemasporellaceae is proposed to accommodate fungi with synnematous conidiomata, with descriptions of S. toxicodendri on Toxicodendron sylvestre and S. aculeans on Rhus copallina.
Original languageEnglish
Pages (from-to)119-134
JournalPersoonia: Molecular Phylogeny and Evolution of Fungi
Volume40
DOIs
Publication statusPublished - Jun 2018

Keywords

  • Ascomycota
  • phylogeny
  • Sordariomycetes
  • taxonomy

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