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dc.contributor.authorRatchadawan Cheewangkoonen_US
dc.contributor.authorJohannes Z. Groenewalden_US
dc.contributor.authorKevin D. Hydeen_US
dc.contributor.authorChaiwat To-anunen_US
dc.contributor.authorPedro W. Crousen_US
dc.description.abstractChocolate Spot leaf disease of Eucalyptus is associated with several Heteroconium-like species of hyphomycetes that resemble Heteroconium s. str. in morphology. They differ, however, in their ecology, with the former being plant pathogenic, while Heteroconium s. str. is a genus of sooty moulds. Results of molecular analyses, inferred from DNA sequences of the large subunit (LSU) and internal transcribed spacers (ITS) region of nrDNA, delineated four Heteroconium-like species on Eucalyptus, namely H. eucalypti, H. kleinziense, Alysidiella parasitica, and one isolate resembling a novel species in a clade separate from the holotype of Heteroconium, H. citharexyli. Based on molecular phylogeny, morphology and ecology, the Heteroconium-like species associated with Chocolate Spot disease are reclassified in the genus Alysidiella, which is shown to have mycelium that is immersed in and superficial on the host tissue and conidiogenous cells that can have loci that are either inconspicuous or proliferating percurrently. Furthermore, conidiogenous cells can either occur solitary on hyphae, or be sporodochial, arranged on a weakly developed stroma, which further distinguishes Alysidiella from Heteroconium. © 2010 The Author(s).en_US
dc.subjectAgricultural and Biological Sciencesen_US
dc.titleChocolate spot disease of Eucalyptusen_US
article.title.sourcetitleMycological Progressen_US
article.volume11en_US Mai Universityen_US Fungal Biodiversity Center CBS - KNAWen_US Fah Luang Universityen_US Saud University College of Scienceen_US
Appears in Collections:CMUL: Journal Articles

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