Anthranilic Acid, a Spore Germination Inhibitor of Phytopathogenic <i>Streptomyces</i> sp. B-9-1 Causing Root Tumor of Melon

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  • Aoki Yuu
    Science of Plant and Animal Production Course, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
  • Yoshida Yoshihiro
    Division of Bioregulation and Biointeraction, Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
  • Yoshida Masahiro
    Department of Bioscience, School of Agriculture, Kyushu Tokai University
  • Kawaide Hiroshi
    Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology
  • Abe Hiroshi
    Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology
  • Natsume Masahiro
    Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology

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  • Anthranilic acid, a spore germination inhibitor of phytopathogenic Streptomyces sp. B-9-1 causing root tumor of melon

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Description

A spore germination inhibitor was isolated from the liquid-cultured material of Streptomyces sp. B-9-1, the causal organism of root tumors in melon, and identified as anthranilic acid, which reversibly inhibited spore germination, showed no effect on hyphal growth, and was effective for other Streptomyces spp. However, anthranilic acid showed an IC50 at ca. 50 μg/ml, and its content in spores was 0.16 μg/9×108 spores, indicating that its contribution to the inhibition of spore germination was small.

Journal

  • Actinomycetologica

    Actinomycetologica 19 (2), 48-54, 2005

    The Society for Actinomycetes Japan

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