The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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Root Rot of Moth Orchid Caused by Fusarium spp.

  • Kim, Wan-Gyu (Applied Microbiology Division, National of Agricultural Science and Technology, Rural Development Administration(RDA)) ;
  • Lee, Byung-Dae (Biorigin Incorporation) ;
  • Kim, Woo-Sik (Plant Pathology Division, National Institute of Agricultural Science and Technology, RDA) ;
  • Cho, Weon-Dae (Plant Pathology Division, National Institute of Agricultural Science and Technology, RDA)
  • Published : 2002.08.01
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Abstract

Moth orchid plants with yellowing blight and root rot symptoms were collected, and a total of 54 isolates of Fusarium spp. was obtained from roots and leaf bases of the diseased plants. The isolates were identified based on their morphological characteristics. Out of the 54 isolates of Fusarium spp., 42 isolates were identified as F. solani, 5 isolates as F. oxysporum, and 7 as F. proliferatum. Isolates of the three Fusarium spp. were tested for pathogenicity to moth orchid plants by artificial inoculation. All the Fusarium spp. induced root rot of the host plants. The symptoms progressed up to the basal part of the leaves, which later caused yellowing blight. The symptoms induced on the plants by artificial inoculation with the Fusarium spp. isolates were similar to those observed in greenhouses. The present study reveals that F. oxysporum, F. proliferatum, and F. solani cause root rot of moth orchid, and that F. solani is the main pathogen of the disease.

Keywords

References

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