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ABSTRACT: The highlands of Southern Brazil contribute with 40% of Brazilian persimmon production. Although expanding, persimmon production faces major problems caused by anthracnose disease (black spot), including fruit rot and necrosis of leaves. Several Colletotrichum species (C. horii, C. gloeosporioides, among others) are implicated in persimmon anthracnose around the world. To identify Colletotrichum species associated with persimmon anthracnose in the highlands of Southern Brazil, 34 isolates were analyzed by ITS-rDNA partial region, GAPDH, and TUB2 partial gene sequences, morphological characteristics, and virulence on persimmon fruits and leaves. Data showed a high prevalence of C. horii (85.3%), that associated with its high virulence on fruits and leaves, confirm a considerable degree of host preference. Moreover, other species C. aenigma, C. asianum, C. fructicola, and C. nymphaeae, were identified, but the last three ones exhibited low virulence on fruits and were not able to produce symptoms on leaves. As far as we know this is the first reference on C. asianum in persimmon. The present data may contribute to a better understanding of the etiology of anthracnose in sweet persimmon in Southern Brazil, and it will be useful for epidemiological studies and the development of disease management measures.

Morphological characterization and molecular identification of Colletotrichum species associated to sweet persimmon anthracnose in Southern Brazil