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Colletotrichum Disease of Mungbean Sprout by Colletotrichum acutatum

  • Kim, Dong-Kil (Research Institute of Life Science, Gyeongsang National University) ;
  • Lee, Sun-Chul (Research Institute of Life Science, Gyeongsang National University) ;
  • Kang, Jin-Ho (Division of Plant Resources and Environment, Gyeongsang National University) ;
  • Kim, Hee-Kyu (Division of Plant Resources and Environment, Gyeongsang National University)
  • Published : 2003.08.01

Abstract

Decayed samples of marketed mungbean sprout were collected from Sacheon, Suncheon, and Dangjin cities in Korea. Initial symptom on hypocotyls was dark-brown diamond speck, which developed into enlarged sunken brownish-black spot with irregular margin, followed by softening yellowish decay. Brown speck on cotyledon further developed into irregular lesions. This study isolated the fungus Colletotrichum sp. The fungal colony was pale orange, which turned greenish gray after 1 week at $25^{\circ}C$. Colony of reverse side in a petri dish was pink. Neither conidiomata nor setae were present in the culture. Typical fusiform conidia sized 7.5-15.0$\times$2.5-2.9 $\mu\textrm$were hyaline, aseptate, smooth, and had salmon color in mass. Conidiogenous cells were phialidic, hyaline, smooth, and cylindrical with terminal distinct collarette. Basedon these mycological characteristics, the casual organism was identified as Colletotrichum acutatum. This is first report of Colletotrichum acutatum in Korea.

Keywords

References

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  2. Han, K. S. and Lee, D. H. 1995. Identification and etiological characteristics of Anthracnose fungi isolated from soybean, small red bean and green bean. Korean J. Plant Pathol. 11: 30-38
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