期刊
MYCOLOGIA
卷 107, 期 6, 页码 1193-1204出版社
TAYLOR & FRANCIS INC
DOI: 10.3852/14-260
关键词
fungal systematics; invasive plants; phylloplane; smut fungi; taxonomy; Ustilaginomycotina
类别
资金
- Assembling the Fungal Tree of Life (AFTOL) project NSF [DEB-0732968]
Numerous strains of a novel yeast were isolated in Louisiana, USA, from the leaves of several palustrine plants, most frequently from the invasive aquatic ferns Salvinia minima and S. molesta. This fungus produced fast-growing colonies that were grayish violet to dark blue in culture and rapidly reproduced via production of copious ballistoconidia that germinated to form pseudohyphae. Colonies produced many two-celled yeasts that were distinctly hourglass-or peanut-shaped, and occurred singly or in chains. Phylogenetic analyses of translation elongation factor 1-alpha, beta-tubulin and the nuc rDNA regions encompassing 28S D1-D2 domains, 18S and the internal transcribed spacers 1 and 2, including 5.8S, indicate this fungus is a member of Ustilaginomycetes but holds an isolated position, distinct from the two currently recognized orders, Ustilaginales and Urocystales. Here we describe Violaceomycetales ord. nov., Violaceomycetaceae fam. nov. and Violaceomyces palustris gen. et sp. nov. for this unusual fungus.
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