title: Isolation and characterization of a spore germination inhibitor from Streptomyces sp. CB-1-1, a phytopathogen causing root tumor of melon.
abstract: The germination rate and activation conditions of spores were examined for four strains of Streptomyces sp., a phytopathogen causing root tumor of melon. An inhibitor was isolated from the agar-cultured material of strain CB-1-1 and then characterized. The inhibitor selectively acted on spore germination and did not affect hyphal growth, and inhibition was abolished by washing the spores in water. The inhibitor was produced by an agar culture, and most of the inhibitor existed in the spores. The IC(50) value for the inhibitor was approximately 0.25 microg/ml.
authors.affiliation: Science of Plant and Animal Production Course, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan.
authors.forename: Yuu
authors.initials: Y
authors.lastname: Aoki
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yoshida
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawaide
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Abe
authors.forename: Masahiro
authors.initials: M
authors.lastname: Natsume
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D019662:Cucurbitaceae / Q000382:microbiology; D003470:Culture Media; D006358:Hot Temperature; D025301:Hyphae / Q000187:drug effects / Q000254:growth & development; D009682:Magnetic Resonance Spectroscopy; D010935:Plant Diseases / Q000382:microbiology*; D012967:Sodium Dodecyl Sulfate / Q000494:pharmacology; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet; D013172:Spores, Fungal / Q000187:drug effects* / Q000254:growth & development; D013302:Streptomyces / Q000254:growth & development / Q000378:metabolism*; D013501:Surface-Active Agents / Q000494:pharmacology
chemical_list: D003470:Culture Media; D013501:Surface-Active Agents; D012967:Sodium Dodecyl Sulfate