Green microalgae can use naphthalenesulfonic acids as sources of sulfur |
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Authors: | C J Soeder E Hegewald H Kneifel |
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Institution: | (1) Institut für Biotechnologie, Kernforschungsanlage Jülich GmbH, D-5170 Jülich, Germany |
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Abstract: | 1-Naphthalenesulfonate (1-NS) was utilized by axenic cultures of Scenedesmus obliquus and by 5 other green microalgae as the sole source of sulfur. For all algae under study, 2-naphthalenesulfonate was definitely inferior to 1-NS as a source of sulfur. The rate of disapperance of 1-NS from the medium was measured by HPLC and, indirectly, by relating growth to sulfur supply. The physiological availability of 1-NS sulfur for Scenedesmus obliquus amounted to about 14% of sulfate sulfur. 1-Naphthol appeared as the major metabolite of 1-NS. Hence, it was concluded that 1-NS underwent a desulfonation which also took place in the presence of moderate concentrations of sulfate.Abbreviations HPLC
high performance liquid chromatography
- 1-NS
1-naphthalenesulfonic acid
- 2-NS
2-naphthalenesulfonic acid
- OD
optical density
- OD0
optical density at time 0 of the light-and-dark cycle
Dedicated to Prof. Dr. W. Habsguth on the occasion of his 75th birthday |
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Keywords: | Chlorella Scenedesmus Sulfur metabolism Naphthalenesulfonic acids |
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