The Plant Pathology Journal
- Volume 15 Issue 3
- /
- Pages.168-171
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- 1999
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- 2093-9280(eISSN)
Production of Thaxtomin A by Korean Isolates of Streptomyces turgidiscabies and Their Involvement in Pathogenicity
- Kim, Young-Sook (Division of Biological environment, Kangwon National University, Chuncheon) ;
- Cho, Jun-Mo (Division of Biological environment, Kangwon National University, Chuncheon) ;
- Park, Duck-Hwan (Division of Biological environment, Kangwon National University, Chuncheon) ;
- Lee, Heung-Goo (Division of Biological environment, Kangwon National University, Chuncheon) ;
-
Kim, Jeom-Soon
(Alpine Agricultural Experiment Station, Rural Development Administration)
;
- Seo, Sang-Tae (Division of Biological environment, Kangwon National University, Chuncheon) ;
- Shin, Kwan-Yong (Alpine Agricultural Experiment Station, Rural Development Administration) ;
-
Hur, Jang-Hyun
(Division of Biological environment, Kangwon National University, Chuncheon)
;
-
Lim, Chun-Keun
(Division of Biological environment, Kangwon National University, Chuncheon)
- Published : 1999.06.01
Abstract
Crude extracts of pathogenic Streptomyces turgidiscabies isolates produced necrotic reaction on potato slices. Necrosis was first visible 24 hr after application and increased in severity over several days. However, necrosis was not observed when crude extracts of nonpathogenic strains were applied onto tuber slices. Presence of thaxtomin A from crude extracts of pathogenic S. turgidiscabies was identified by thin layer chromatography and high performance liquid chromatography. Nonpathgenic strains did not produce thaxtomin A in oatmeal broth. Inoculation of potato tuber slices with thaxtomin A partially purified from crude extract of a pathogenic S. turgidiscabies ST5 reproduce necrotic reaction suggesting that thaxtomin A is a pathogenicity determinant in S. turgidiscabies.