Cultural and Pathogenic Characteristics between Colletotrichum gloeosporioides and Glomerella cingulata Isolated from Strawberry in Korea

국내 딸기 탄저병균 Colletotrichum gloeosporioides와 Glomerella cingulata의 배양적, 병원학적 특성

  • 남명현 (충남농업기술원 논산딸기시험장) ;
  • 정석기 (충남농업기술원 논산딸기시험장) ;
  • 유성준 (충남대 농생물학과) ;
  • 서관석 (충남농업기술원 논산딸기시험장) ;
  • 김홍기 (충남대 농생물학과)
  • Published : 1998.12.01

Abstract

Colletotrichum gloeosporioides and Glomerella cingulata are the most important pathogens causing anthracnose which may reduce the stand rate and yield on wide kinds of plants including strawberry. Average occurrence rate of anthracnose is 36.9% on major strawberry cropping areas in Korea. We newly found that C. gloeosporioides which does not forming a sexual stage, infects strawberry and differs in some characteristics concerning virulence, cultural and morphological properties to G. cingulata which has a sexual stage. C. gloeosporioides was mainly isolated from the crown with 35.2% rate, while G. cingulata was largely isolated from petiole, runner with 40.9% rate in infected strawberry plants. These two pathogens showed significant differences in cultural characteristics such as perfect stage formation, temperature response as well as benomyl resistance. It was demonstrated that C. gloeosporioides has significantly stronger pathogenicity than G. cingulata in pathogenicity test carried on strawberry plants to various strawberry cultivars. Akihime, Akaneko and Nyoho forcing cultured strawberry cultivars, considered to be susceptible, while semiforcing cultured cultivars, such as Suhong and Holowase, were shown resistant to both pathogens. In non-wound inoculation, C. gloeosporioides was shown pathogenicity on the apple fruit, but G. cingulata could not infect it.

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