Mycobiology

The Korean Society of Mycology (한국균학회)
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Identification, Characterization, and Pathogenicity of Colletotrichum Species Causing Anthracnose of Peach in Korea

  • Lee, Dae Min (Department of Ecology & Environmental System, College of Ecology & Environmental Sciences, Kyungpook National University) ;
  • Hassan, Oliul (Department of Ecology & Environmental System, College of Ecology & Environmental Sciences, Kyungpook National University) ;
  • Chang, Taehyun (Department of Ecology & Environmental System, College of Ecology & Environmental Sciences, Kyungpook National University)
  • Received : 2020.02.13
  • Accepted : 2020.04.26
  • Published : 2020.06.30
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Abstract

Peach (Prunus persica L.) is one of the major fruit crops in South Korea, along with apple, persimmon, and Asian pears. Peach anthracnose is a continuing threat to growers and is accountable for enormous economic loss. In July 2018, anthracnose of peach appeared at different peach orchards in Gyeongsangbuk-do region, Korea. The typical anthracnose symptoms (brown, circular, and necrotic lesions) were observed on the fruits. Anthracnose of peach was surveyed in different peach orchards of Gyeongsangbuk-do, and 20 fungal isolates from 19 diseased fruits were collected. Multigene phylogenetic analyses coupled with morphological characteristic analysis approaches were used for identifying the fungal species isolated from diseased fruits. This study confirmed three Colletotrichum species. Based on the results, Colletotrichum siamense are reported for the first time as causal agents of peach anthracnose alongside C. fructicola and C. fioriniae, which has been reported previously. Pathogenicity assays were performed for the three isolates representing all the species identified, and Koch's postulates on detached healthy peach fruits were verified. All the identified species were pathogenic on peach fruits as the typical anthracnose symptoms were reproduced. Significant variations in the virulence were observed among fungal species on peach fruit.

Keywords

References

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