1. The Colletotrichum dracaenophilum, C. magnum and C. orchidearum species complexes
- Author
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A. Alizadeh, T. Sato, Pedro W. Crous, Ulrike Damm, Johannes Z. Groenewald, Westerdijk Fungal Biodiversity Institute - Evolutionary Phytopathology, and Westerdijk Fungal Biodiversity Institute
- Subjects
Systematics ,C. orchidearum Allesch ,C. cacao Damm ,Glomerella ,Colletotrichum ,Anthracnose ,Phylogeny ,Gloeosporium ,Ascomycota ,Colletotrichum cliviicola Damm & Crous for C. cliviae Yan L. Yang et al ,C. sojae Damm & Alizadeh ,C. plurivorum Damm, Alizadeh & Toy. Sato ,Phylogenetics ,Botany ,C. musicola Damm ,lcsh:QH301-705.5 ,C. piperis Petch ,Orchidaceae ,biology ,Phylogenetic tree ,C. cattleyicola Damm & Toy. Sato ,C. coelogynes Damm ,C. okinawense Damm & Toy. Sato ,biology.organism_classification ,Agricultural and Biological Sciences (miscellaneous) ,Glomerella magna S.F. Jenkins & Winstead ,Laboratorium voor Phytopathologie ,Taxon ,C. panamense Damm ,lcsh:Biology (General) ,Laboratory of Phytopathology ,C. vittalense Damm ,Taxonomy (biology) ,C. lobatum Damm ,C. merremiae Damm ,Research Paper - Abstract
Although Glomerella glycines, Colletotrichum magnum and C. orchidearum are known as causal agents of anthracnose of soybean, Cucurbitaceae and Orchidaceae, respectively, their taxonomy remains unresolved. In preliminary analyses based on ITS, strains of these species appear basal in Colletotrichum phylogenies, clustering close to C. cliviae, C. brevisporum and other recently described species from tropical or subtropical regions. Phylogenetic analyses (ITS, GAPDH, CHS-1, HIS3, ACT, TUB2) of 102 strains previously identified as Ga. glycines, C. magnum and C. orchidearum as well as other related strains from different culture collections and studies placed these taxa in three species complexes, and distinguished at least 24 species, including 11 new species. In this study, C. magnum, C. orchidearum and C. piperis were epitypified and their taxonomy resolved, while C. cliviicola was proposed as a new name for C. cliviae. Furthermore, a sexual morph was observed for C. yunnanense, while C. brevisporum, C. cliviicola and C. tropicicola were reported from new hosts or countries. Regarding their conidial morphology, species in the C. dracaenophilum, C. magnum and C. orchidearum species complexes are reminiscent of C. gloeosporioides or C. boninense s. lat., and were likely to be confused with them in the past.
- Published
- 2019