リンリコンブ<i>Laminaria japonica var. ochotensis</i>穴あき症藻体より分離したアルギン酸分解性海洋細菌について

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タイトル別名
  • Characterization of an Alginolytic Marine Bacterium from Decaying Rishiri-kombu Laminaria japonica var. ochotensis.
  • リシリコンブLeminaria japonica var.ochotensis穴あき症藻体より分離した
  • リシリコンブ Leminaria japonica var.ochoten

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An alginolytic marine bacterium, H-4, was isolated from decaying thalli of Laminaria japonica var. ochotensis. Strain H-4 is a gram-negative polarly flagellated rod, which oxidatively produces acid from glucose, is oxidase positive and requires seawater for growth. DNA base composition measured from melting point of DNA is 39.8mol%G+C. According to these characteristics, the strain was identified as genus Alteromonas. Alteromonas sp. H-4 resembles A. espejiana but differs in DNA base composition and some properties and could not be identified to any species in the genus Alteromonas.<br> The productivity of extracellular alginate lyase by Alteromonas sp. H-4 increased with seawater concentration and decreased with casitone concentration in the media. Its productivity was observed in a medium without alginate. The bacterium produced a maximum amonut of alginate lyase in liquid media containing 75% seawater, 0.5% casitone, and 0.1% sodium alginate after 96h incubation with shaking at 25°C.

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  • 日本水産学会誌

    日本水産学会誌 58 (1), 141-145, 1992

    公益社団法人 日本水産学会

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