Phylogenetic relationships of Chalara and allied species inferred from ribosomal DNA sequences |
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| Authors: | Lei Cai Wen-Ping Wu Kevin D Hyde |
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| Institution: | (1) Centre for Research in Fungal Diversity, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong;(2) Novozymes A/S, Krogshoejvej 36, DK-2880 Bagsvaerd, Denmark;(3) School of Science, Mae Fah Luang University, Tasud, Chiang Rai, 57100, Thailand;(4) Present address: Novozymes China, 14 Xin Xi Lu, Shangdi Zone, Haidian District, Beijing, 10085, China |
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| Abstract: | The phylogenetic relationships of Chalara and allied taxa are studied based on ribosomal DAN sequences. Partial 28S rDNA and 18S rDNA regions from 26 strains were
sequenced in this study. These and related sequences from GenBank were analyzed using parsimony and Bayesian analyses. Most
of the Chalara species clustered in a strongly supported monophyletic lineage representing Helotiales. However, a few Chalara species appeared closely related to Xylariales. The phylogenetic significance of morphological characters observed in Chalara species are evaluated based on our sequence analyses. Conidial septation, conidial width and conidiophore pigmentation are
thought to be indicative in understanding their evolutionary relationships. Sterile setae, which traditionally have been used
to delimitate Chaetochalara from Chalara, are phylogenetically insignificant. |
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| Keywords: | Anamorphic fungi Chaetochalara Fungal morphology Phylogeny |
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