First record of Colletogloeopsis zuluense comb. nov., causing a stem canker of Eucalyptus in China |
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| Affiliation: | 1. Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa;2. Biological Science, Murdoch University, Murdoch 6150, Australia;3. Research Institute of Tropical Forestry, Londong, Guangzhou, Guangdong Province, P.R. China;4. Centraalbureau voor Schimmelcultures, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands;1. Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China;2. School of Pharmacy, Nanjing Medical University, Nanjing 210029, PR China;3. Department of Clinical Laboratory, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China;4. Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia;1. Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa;2. Department of Plant Science, FABI, University of Pretoria, Pretoria, South Africa;3. Department of Genetics, FABI, University of Pretoria, Pretoria, South Africa;4. Department of Plant Pathology, Stellenbosch University, South Africa;1. Department of Plant and Soil Sciences, DST-NRF Centre of Excellence in Tree Health Biotechnology (CTHB), Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria 0083, South Africa;2. Department of Genetics, CTHB, FABI, University of Pretoria, Pretoria 0083, South Africa;1. Department of Microbiology and Plant Pathology, DST-NRF Centre of Excellence in Tree Health Biotechnology (CTHB), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South Africa;2. Department of Genetics, DST-NRF Centre of Excellence in Tree Health Biotechnology (CTHB), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South Africa;3. Department of Plant Science, DST-NRF Centre of Excellence in Tree Health Biotechnology (CTHB), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South Africa;1. Departamento de Fitopatologia, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil;2. Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil;3. Centro de Tecnologia, Fibria, 29197-900 Aracruz, ES, Brazil |
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| Abstract: | Coniothyrium zuluense causes a serious canker disease of Eucalyptus in various parts of the world. Very little is known regarding the taxonomy of this asexual fungus, which was provided with a name based solely on morphological characteristics. In this study we consider the phylogenetic position of C. zuluense using DNA-based techniques. Distance analysis using 18S and ITS regions revealed extensive sequence divergence relative to the type species of Coniothyrium, C. palmarum and species of Paraconiothyrium. Coniothyrium zuluense was shown to be an anamorph species of Mycosphaerella, a genus that includes a wide range of Eucalyptus leaf and stem pathogens. Within Mycosphaerella it clustered with taxa having pigmented, verruculose, aseptate conidia that proliferate percurrently and sympodially from pigmented conidiogenous cells arranged in conidiomata that vary from being pycnidial to acervular. The genus Colletogloeopsis is emended to include species with pycnidial conidiomata, and the new combination Colletogloeopsis zuluense is proposed. This is also the first report of the pathogen from China where it is associated with stem cankers on Eucalyptus urophylla. |
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