La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Silicon Deficiency Induces Alkaline Phosphatase Enzyme Activity in Cultures of Four Marine Diatoms
Auteurs :	Soledad Fuentes, Auteur ; Gary H. Wikfors, Auteur ; Shannon Meseck, Auteur
Type de document :	Article
Dans :	Estuaries and Coasts (37(2) MAR 2014)
Article en page(s) :	312-324
Résumé :	Alkaline phosphatase (AP) was detected using ELF-97A (R) in silicon-starved Pseudo-nitzschia multiseries cells; thus, we tested two, alternative hypotheses: Pseudo-nitzschia multiseries has a high phosphate demand, showing signs of phosphate deficiency even when concentrations of orthophosphate are high, or silicate deficiency can stimulate the AP enzyme in this species. We also studied the effect of silicon deficiency on AP in three other common marine diatoms: Thalassiosira pseudonana, Nitzschia pusilla, and Nitschia closterium. Each of the species tested showed a different pattern of AP regulation.

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