Effect of trehalose and trehalase production on mycelium growth of <i>Tricholoma matsutake.</i>

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  • KUSUDA Mizuho
    Laboratory of Biocycle Engineering, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
  • YODONO Ryosuke
    Laboratory of Food Microbiological Science and Biotechnology, School of Agriculture, Kin-ki University
  • UEDA Mitsuhiro
    Laboratory of Biocycle Engineering, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
  • SHIRASAKA Norifumi
    Laboratory of Food Microbiological Science and Biotechnology, School of Agriculture, Kin-ki University
  • MIYATAKE Kazutaka
    Laboratory of Biocycle Engineering, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
  • TERASHITA Takao
    Laboratory of Food Microbiological Science and Biotechnology, School of Agriculture, Kin-ki University

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Other Title
  • マツタケの菌糸体生育に及ぼすトレハロースの影響とトレハラーゼ生産性
  • マツタケ ノ キンシタイ セイイク ニ オヨボス トレハロース ノ エイキョウ ト トレハラーゼ セイサンセイ

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Abstract

<p>Effect of trehalose on the mycelial growth and production of extracellular trehalase of Tricholoma matsutake was examined. Large amounts of mycelial dry weights were obtained when the vegetative mycelium of this fungus was cultured in the partially modified matsutake liquid (PMML) medium and the Hamada matsutake liquid (HML) medium supplemented with trehalose as compared to cultures in supplemented with glucose. The range of the effect of 1.0-8.0% carbohydrate substrate on vegetative mycelial growth was investigated. The optimal concentration for mycelial growth was 2.0% for the glucose medium but 8.0% for the trehalose medium. The activity of the extracellular trehalase increased during vegetative mycelial growth of T. matsutake and was maximal 70 days after inoculation. The extracellular trehalase was examined for purification and characterization.</p>

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