島根大学農学部研究報告

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島根大学農学部研究報告 21
1987-12-21 発行

微細藻類に対する増殖抑制細菌の単離およびその産生物質の特性

Isolation of a Bacterium Inhibiting the Growth of Microalgae and Characterization of the Produced Inhibitors
持田 和男
尾添 嘉久
中村 利家
松田 俊一
山口 典生
ファイル
内容記述(抄録等)
A bacterium which inhibited the growth of a green alga Chlorella sp. was isolated from upper-layer water of the brackish lake Nakanoumi and identified as Enterobacter aerogenes. The bacterium produced relatively stable algal growth inhibitors(AGI) which decreased dramatically the chlorophyl content of Chlorella in the initial growth stage under continuous illumination although the cell number was unchanged. The partially purified AGI also inhibited the growth of other green algae and diatoms as well as Chlorella. From the behavior in gel filtration (Sephadex G-100 and Sepharose 4B), paper partition chromatography, and ionexchange chromatography(DEAE Sephadex A-50), it was suggested that these AGI were high molecular substances containing saccharides as the constituent.