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Colletotrichum Diversity within Different Species Complexes Associated with Fruit Anthracnose in South Korea and Their Fungicides In-Vitro Sensitivity

국내 과실 탄저병을 일으키는 종 복합체와 종 다양성 및 살균제 감수성

  • Taehyun Chang (Department of Crop Science, College of Ecology and Environmental Sciences, Kyungpook National University) ;
  • Oliul Hassan (Crop Protection Division, National Institute of Agricultural Science) ;
  • Jong Yeob Jeon (Central Research Institute, Kyung Nong Co.) ;
  • Chi Hyun Kim (Gimcheon Nong Hyup) ;
  • Dae Min Lee (SUNGBO Research Center) ;
  • Ju Sung Kim (J-agro Co. Ltd. Research Center) ;
  • Eun Chan Kang (J-agro Co. Ltd. Research Center) ;
  • Jaewon Kim (Department of Crop Science, College of Ecology and Environmental Sciences, Kyungpook National University)
  • Received : 2023.10.05
  • Accepted : 2023.12.04
  • Published : 2023.12.31

Abstract

Anthracnose, caused by the Colletotrichum genus, comprises a significant number of plant pathogens and poses a major threat to fruit production worldwide, including South Korea. Colletotrichum species were identified associated with anthracnose in fruits such as apple, persimmon, plum, peach, jujube, walnut, and grape. A polyphasic approach, including morphology, multigene phylogenetics, and pathogenicity testing, was used. Additionally, the in-vitro sensitivity of identified Colletotrichum species to common fungicides was also evaluated. A total of nine Colletotrichum species within two complexes, namely gloeosporioides and acutatum, have been identified as the causal agents of anthracnose in common fruits in South Korea. In the gloeosporioides complex, we found Colletotrichumaenigma, C. fructicola, C. gloeosporioides, C. horii, C. siamense, and C. viniferum. Meanwhile, in the acutatum complex, C. fioriniae, C. nymphaeae, and C. orientalis were identified. Notably, C. fructicola, C. siamense, C. fioriniae, and C. nymphaeae were reported for the first time from apple, C. siamense, C. fioriniae and C. nymphaeae from plum, C. siamense, C. fructicola, and C. fioriniae frompeach, C. siamense and C. horii from persimmon, C. fioriniae from Omija (Schisandra), C. orientalis from walnut, C. nymphaeae from jujube, and C. aenigma, C. fructicola, and C. siamense fromgrape. Fungicide sensitivity tests revealed significant variation in the EC50 values among specific Colletotrichum species when exposed to different fungicides. Moreover, the same Colletotrichum species isolated from different host plants displayed varying sensitivity to the same fungicide.

탄저병원균(Colletotrichum) 속의 많은 식물병원균은 한국을 비롯하여 전 세계 과수 생산에 큰 위협이 된다. 사과, 감, 자두, 복숭아, 대추, 포도 및 호두와 같은 과실에서 탄저병과 관련된 탄저병원균의 종이 동정되었다. 형태적, 다중 유전자의 계통발생적 및 병원성 시험이 다양한 접근으로 실시되었다. 동정된 탄저병원균의 종에 대한 감수성은 살균제에 대하여 평가하였다. 2종의 종복합체인 gloeosporioides와 acutatum에 속한 9종의 탄저병원균이 국내 과실에 탄저병의 주요 원인균으로 동정되었다. Colletotrichum gloeosporioides 종 복합체 안에는 6종인 C. aenigma, C. fructicola, C. gloeosporioides, C. horii, C. siamense 및 C. viniferum이 있는 반면, Colletotrichum acutatum 종 복합체 안에 종은 C. fioriniae, C. nymphaeae 및 C. orientalis이 동정되었다. 사과 탄저병원균은 C. fructicola, C. siamense, C. fioriniae 및 C. nymphaeae, 자두 탄저병원균은 C. siamense, C. fioriniae 및 C. nymphaeae, 복숭아 탄저병원균은 C. siamense, C. fructicola 및 C. fioriniae, 감 탄저병원균은 C. siamense, C. horii 및 C. nymphaeae, 오미자 탄저병원균은 C. fioriniae, 호두탄저병원균은 C. orientalis, 대추탄저병원균은 C. nymphaeae, 포도 탄저병원균인 C. aenigma, C. fructicola 및 C. siamense를 국내 과수류의 과실에 병을 일으키는 병원균의 종류로 처음 국제학술지에 보고되었다. 이들 병원균의 종에 대한 살균제의 감수성 시험에서 여러 살균제에 대한 탄저병원균의 종 간에 EC50값이 매우 다양하여 감수성의 차이가 크게 나타났다.

Keywords

Acknowledgement

We would like to thank all the members of the Plant Pathology Lab, School of Ecology Environmental System, Kyungpook National University, Sangju, Gyeongbuk 37224, Korea (Republic of) for their help conducting the experiments.

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