Co-occurring species of Teratosphaeria on Eucalyptus

Show simple item record Crous, Pedro W. Groenewald, Johannes Zacharias Summerell, Brett A. Wingfield, Brenda D. Wingfield, Michael J. 2009-10-27T06:02:42Z 2009-10-27T06:02:42Z 2009
dc.description.abstract A common leaf spot disease occurring on Eucalyptus cladocalyx and E. lehmannii in the Western Cape Province of South Africa is known from literature to be caused by the fungus Coniothyrium ovatum, which is a pathogen native to several eucalypts in Australia. Recent collections have shown that Australian material identified as C. ovatum is morphologically and phylogenetically distinct from the South African specimens, and that all these taxa would be better accommodated in the genus Teratosphaeria. South African specimens previously identified as C. ovatum were found to represent two species that co-occur in the same leaves and even spots and are described here as T. juvenalis and T. verrucosa. Furthermore, a fresh collection of T. ovata from E. phoenicea in Australia, is distinguished morphologically and phylogenetically from similar, newly described taxa such as T. veloci on E. miniata, and Readeriella dimorpha, which is also placed in Teratosphaeria. Although these leaf pathogens appear to be of minor economic importance, they are morphologically similar to two serious eucalypt canker pathogens, namely T. gauchensis and T. zuluensis, which predominantly cause stem cankers, but could also be found occurring in leaf spots on their own, or in association with some of the other species treated here. Further research is, therefore, required to develop molecular detection techniques for these taxa to enable researchers to rapidly distinguish the minor pathogens from the more serious quarantine pathogens that co-occur on leaves. en_US
dc.identifier.citation Crous, PW, Groenewald, JZ, Summerell, BA, Wingfield, BD & Wingfield, MJ 2009, 'Co-occurring species of Teratosphaeria on Eucalyptus', Persoonia, vol. 22, pp. 38-48. [] en_US
dc.identifier.other 10.3767/003158509X424333
dc.language.iso en en_US
dc.publisher Nationaal Herbarium Nederland & Centraalbureau voor Schimmelcultures en_US
dc.rights Creative Commons Licence en_US
dc.subject Colletogloeopsis en
dc.subject Coniothyrium en
dc.subject Kirramyces en
dc.subject Readeriella en
dc.subject Taxonomy en
dc.subject Teratosphaeria en
dc.subject.lcsh Eucalyptus en
dc.subject.lcsh Mycosphaerella leaf blotch disease -- South Africa -- Western Cape en
dc.subject.lcsh Canker (Plant disease) en
dc.title Co-occurring species of Teratosphaeria on Eucalyptus en_US
dc.type Article en_US

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