Mycologia (2013) 105, 297-311
Marcele Vermeulen, Marieka Gryzenhout, Michael J. Wingfield and Jolanda Roux (2013)
Species delineation in the tree pathogen genus Celoporthe (Cryphonectriaceae) in southern Africa
Mycologia 105 (2), 297-311
Abstract: The genus Celoporthe was first described when C. dispersa was discovered in South Africa associated with dieback and cankers on trees in the Myrtales. Four additional species were recently described from Eucalyptus and Syzygium cumini in China as well as S. aromaticum and Eucalyptus in Indonesia. Inoculation trials have shown that all Celoporthe species, including those that have not been found on Eucalyptus species in nature, are pathogenic to Eucalyptus and they are thus potentially threatening to commercial Eucalyptus forestry. New isolates, morphologically similar to Celoporthe, have been collected from S. legatti in South Africa and S. guineense in Zambia. Multigene phylogenetic analyses based on DNA sequences of the ITS region, TEF1α gene and two areas of the β-tubulin gene revealed additional cryptic species in Celoporthe. Phylogenetic data were supported by morphological differences. These resulted in the description of two previously unknown species of Celoporthe, namely C. fontana and C. woodiana, for two of these cryptic groups, while the third group represented C. dispersa. These species all can readily infect Eucalyptus as well as several species of Syzygium, the latter of which are native to Africa.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Jolanda Roux, Michael J. Wingfield, Marieka Gryzenhout
Research topic(s) for pests/diseases/weeds:
identification/taxonomy
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Celoporthe dispersa | Eucalypt (Eucalyptus) | South Africa | ||
| Celoporthe fontana | Eucalypt (Eucalyptus) | South Africa | ||
| Celoporthe woodiana | Eucalypt (Eucalyptus) | South Africa |
