Colletotrichum contains many important phytopathogenic species that pose serious crop threats.In this study, a novel species, Colletotrichum dioscoreicola associated with Dioscorea yunnanensis was obtained from Wenshan City, Yunnan Province, China.The multi-gene phylogenetic analysis of ITS, ACT, CHS-1, GAPDH, HIS3, and TUB2 sequence data revealed its close affinity with C. sydowii.Morphology of this species is similar to C. sydowii in having cylindrical conidia and presenting dark brown, septate, cylindrical to conical setae.However, the new species can be differentiated by having larger conidia and calabash-shaped appressoria.Colletotrochum dioscoreicola is the first Colletotrichum species reported from D. yunnanensis.
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Yang et al. (2023) studied this question.
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