Linear 3-Hydroxybutyrate Tetramer (HB4) Produced by Sphingomonas sp. Is Characterized as a Growth Promoting Factor for Some Rhizomicrofloal Composers

Noriko OGITA; Yasuyuki HASHIDOKO; Suwido H. LIMIN; Satoshi TAHARA

doi:10.1271/bbb.60299

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Linear 3-Hydroxybutyrate Tetramer (HB4) Produced by Sphingomonas sp. Is Characterized as a Growth Promoting Factor for Some Rhizomicrofloal Composers

Noriko OGITA, Yasuyuki HASHIDOKO, Suwido H. LIMIN, Satoshi TAHARA

著者情報

キーワード: bacterial cell growth-promoting factor, Frateuria sp., linear 3-hydroxybutyrate tetramer, rhizobacteria, Sphingomonas sp.

ジャーナルフリー早期公開

論文ID: 60299

DOI https://doi.org/10.1271/bbb.60299

この記事には本公開記事があります。

The final version of this article is now available: Vol. 70 (2006) , No. 9 p.2325

詳細

抄録

Sphingomonas spp. of α-proteobacteria often play a role in assisting the development of microfloral communities under adverse soil conditions. Using a Frateuria sp. as an indicator for bacterial growth assay, we investigated the bacterial growth-promoting factor in the culture fluids of Sphingomonas sp. EC-K085. This factor was successfully isolated and identified as linear (R,R,R,R)-3-hydroxybutyrate tetramer (HB4), having a hydroxy-end and a carboxy-end group. When 28 μg of HB4 was charged on a paper disc, impregnated Frateuria sp. cells in modified Winogradsky agar medium exhibited a promoted cell growth to form a clear colony emerging zone after a 2-day incubation.

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