Nectria-related fungi causing dieback and canker diseases in China, with Neothyronectriacitri sp. nov. described.
MycoKeys, 2019;56:49-66.
Yang Q[1], Chen WY[1], Jiang N[1], Tian CM[1]
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PMID: 31341399DOI: 10.3897/mycokeys.56.36079
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Abstract
To clarify phylogenetic relationships amongst Nectria, Neothyronectria and Thyronectria in Nectriaceae, we examined detailed morphological characters and performed phylogenetic analyses of a concatenated dataset, based on the ITS, LSU, tef1 and tub2 DNA sequences of fungal specimens in China. Four species of nectria-related fungi were identified, i.e. Nectriadematiosa, N.pseudotrichia, Neothyronectriacitri and Thyronectriapinicola. The newly described species, Neothyronectriacitri, is characterised by its ascomatal wall with bright yellow scurf, unitunicate asci, each with 4-spored and ascospores allantoid to short-cylindrical, uniseriate, muriform, hyaline to slightly yellowish-brown. This species has affinities with other one known species of Neothyronectria and can be distinguished by molecular data.
Keywords: Nectriaceae ; DNA phylogeny; Systematic; Taxonomy
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