Torula aquilariae sp. nov. (Torulaceae, Pleosporales), a new species associated with Aquilaria sinensis from Yunnan, China

Résumé fourni par la source

Torula aquilariae sp. nov. was isolated from a fallen fruit pod of Aquilaria sinensis in Yunnan Province, China. Preliminary identification based on morphological characteristics, the new species is typical of Torula forming effuse, dark brown to black colonies, with monoblastic or polyblastic, doliiform to ellipsoid or cupulate conidiogenous cells, and acrogenous, phragmosporous, brown, septate, smooth-walled to verrucose conidia, in short, branched chains. Multigene phylogenetic analyses of a concatenated ITS, LSU, SSU, tef1-α, and rpb2 sequence data demonstrated that Torula aquilariae sp. nov. is a sister taxon of T. mackenziei, and nested between T. breviconidiophora and T. chromolaenae within Torula (Torulaceae, Pleosporales). Morphologically, the new species resembles T. mackenziei, but is different in the size of the conidiophores and conidia. Besides, the nucleotide pairwise comparison of ITS, tef1-α, and rpb2 gene regions also supports their distinction. Based on multigene phylogeny coupled with morphological traits and nucleotide polymorphism analyses, Torula aquilariae sp. nov. is introduced in this study. Detailed descriptions, illustrations, and an updated phylogeny are provided.

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