Characterization of the glycoside hydrolase family 15 glucoamylase gene from the ectomycorrhizal basidiomycete Tricholoma matsutake

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  • Wan Jianing
    The United Graduate School of Agricultural Sciences,Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8553, Japan
  • Li Yan
    The United Graduate School of Agricultural Sciences,Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8553, Japan
  • Yi Ruirong
    Faculty of Agriculture, Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8553, Japan
  • Mongkolthanaruk Wiyada
    Faculty of Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
  • Kinjo Yukiko
    Faculty of Agriculture, Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8553, Japan
  • Terashita Takao
    Faculty of Agriculture, Kinki University, 3327-204 Nakamachi, Nara 631-8505, Japan
  • Yamanaka Katsuji
    Kyoto Mycological Institute, 1-55 Misasahirabayashi,Yamashina, Kyoto 607-8406, Japan
  • Shimomura Norihiro
    Faculty of Agriculture, Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8553, Japan
  • Yamaguchi Takeshi
    Faculty of Agriculture, Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8553, Japan
  • Aimi Tadanori
    Faculty of Agriculture, Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8553, Japan

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タイトル別名
  • Characterization of the glycoside hydrolase family 15 glucoamylase gene from the ectomycorrhizal basidiomycete <i>Tricholoma matsutake</i>

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説明

<p>The gene encoding the glycoside hydrolase family 15 glucoamylase (TmGlu1) in the ectomycorrhizal fungus Tricholoma matsutake was cloned and characterized. After the culture of T. matsutake mycelia in media containing different forms of starch as a carbon source, increased extracellular glucoamylase activity in the culture medium and a correspondingly higher transcriptional level of TmGlu1 in mycelia were detected, particularly in amylose- supplemented medium, when compared with those in the glucose medium. These results suggest that starch, especially amylose, affects the transcription of TmGlu1 and downstream glucoamylase activity, which is directly related to starch utilization. Similar results were obtained when compound forms of starch were used to culture mycelia. Glucoamylase genes from saprophytic and ectomycorrhizal fungi formed a single clade. The observed inducibility of TmGlu1 and lack of distinct phylogenetic differences among glucoamylase genes of saprophytic and ectomycorrhizal fungi suggest that glucoamylase may relate to some common functions in these two types of fungi.</p>

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  • Mycoscience

    Mycoscience 53 (3), 194-202, 2012

    一般社団法人 日本菌学会

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