Abstract
A new hyphomycete, Leptodiscella brevicatenata, is described based on morphology, growth profilings and DNA sequence comparisons. The new species, isolated from soil in Spain, is characterized by producing conidia with 3- to 9-μm-long appendages and chlamydospores borne singly or in short, simple chains of 2–4 cells. Analyses of sequences of the 5.8S and 28S ribosomal DNA and internal transcribed spacers 1 and 2 of the ribosomal RNA gene cluster indicated that L. brevicatenata is close to L. chlamydospora. The latter species, however, grows faster than L. brevicatenata at 30°C and produces conidia with shorter appendages and chlamydospores which are often arranged in long, sometimes branched, chains. The phylogenetic study revealed that Leptodiscella spp. represent a new lineage of the Dothideomycetes, relatively close to the order Acrospermales. A key to the accepted Leptodiscella species is provided.
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Acknowledgments
We thank Dr. Cony Decock (Mycothèque de l`Université Catholique de Louvain, Louvain-la-Neuve, Belgium) and the curators of the Centraalbureau voor Schimmelcultures (Utrecht, The Netherlands) for providing fungal cultures. This study was supported by the Spanish Ministerio de Ciencia y Tecnología, grants CGL 2008 04226 2008–04226 –and CGL 2009-08698/BOS.
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Madrid, H., Gené, J., Cano, J. et al. A new species of Leptodiscella from Spanish soil. Mycol Progress 11, 535–541 (2012). https://doi.org/10.1007/s11557-011-0768-8
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DOI: https://doi.org/10.1007/s11557-011-0768-8