Effects of concanamycins produced by <Emphasis Type="Italic">Streptomyces scabies</Emphasis> on lesion type of common scab of potato |
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| Authors: | Masahiro Natsume Nobuya Tashiro Akio Doi Yatsuka Nishi Hiroshi Kawaide |
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| Institution: | 1.Division of Bioregulation and Biointeraction, Institute of Agriculture,Tokyo University of Agriculture and Technology,Tokyo,Japan;2.Saga Prefectural Upland Farming Research and Extension Center,Karatsu,Japan;3.Hokkaido Central Agricultural Experiment Station,Hokkaido,Japan;4.Kagoshima Prefectural Institute for Agricultural Development,Kagoshima,Japan |
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| Abstract: | Streptomyces scabies, causative agent of common scab of potato, produces the phytotoxins concanamycin and thaxtomin. In a potato tuber slice assay to study the contribution of concanamycins to lesion development, concanamycin A had weak necrosis-inducing activities; >10× the amount of thaxtomin A was needed to produce equivalent lesion severity. Concanamycins were detected in tubers inoculated with S. scabies, which caused deep-pitted lesions but not in those inoculated with Streptomyces acidiscabies, which caused corky, raised lesions. In field-grown, diseased potatoes, concanamycin content tended to be higher in tubers with deep-pitted lesions than in those with corky, raised lesions. |
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