Journal
MOLECULAR PHYLOGENETICS AND EVOLUTION
Volume 57, Issue 2, Pages 528-535Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2010.07.017
Keywords
Pigmentation of median cells; Pestalotiopsis taxonomy; Molecular phylogenetics; ITS region; tub2
Funding
- National Natural Science Foundation of China [30700002, 30270015, 30470004, 39899400, 30370006, 30230020, 40971156, 30930005]
- Chinese Academy of Sciences [KSCX2-YW-G-068, KSCX2-YW-Z-0935]
- National Science Foundation for Post-doctoral Scientists of China [20070411191]
- Department of Health Sciences, Faculty of Science, University of Mauritius
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Previous phylogenetic studies based on DNA sequence data have partially resolved taxonomic relationships among Pestalotiopsis species. There are still some morphological characters whose phylogenetic significance have not been assessed properly due to limited taxon sampling, in particular the degree of pigmentation of median cells. In this study, the stability of pigmentation of median cells of conidia in Pestalotiopsis species was evaluated in subculture, and a molecular phylogenetic analysis was conducted on 45 strains belonging to 26 species in order to reappraise the pigmentation of median cells for its significance in the taxonomy of Pestalotiopsis. Phylogenetic relationships were inferred from nucleotide sequences in ITS regions (ITS1, 5.8S and ITS2) and beta-tubulin 2 gene (tub2). The results showed that pigmentation of median cells was stable and it could be a key character in the taxonomy of Pestalotiopsis species. Instead of concolorous and versicolor proposed by Steyeart (1949), brown to olivaceous and umber to fuliginous are described and proposed in this paper. (C) 2010 Published by Elsevier Inc.
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