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ARS Home » Southeast Area » New Orleans, Louisiana » Southern Regional Research Center » Commodity Utilization Research » Research » Publications at this Location » Publication #134649
Title: PHOSPHATASE EXPRESSION BY CHLORELLA VULGARIS (CHLOROPHYCEAE) IS MEDIATED BY INTERNAL PHOSPHORUS LEVELS AND EXTERNAL PH

Author
item Evens, Terence
item Koenig, Robbin

Submitted to: American Psychological Association Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 5/15/2002
Publication Date: 6/1/2002
Citation: Evens, T.J., Koenig, R.L. 2002. PHOSPHATASE EXPRESSION BY CHLORELLA VULGARIS (CHLOROPHYCEAE) IS MEDIATED BY INTERNAL PHOSPHORUS LEVELS AND EXTERNAL PH. American Psychological Association Meeting. 38(s1):7-8.

Interpretive Summary:

Technical Abstract: Cultures of Chlorella vulgaris were grown in custom photobioreactors in acid (pH 5.5) and alkaline (pH 7.5) media under phosphate replete and starved conditions. Analysis of differential phosphatase expression indicates that cultures of C. vulgaris grown under alkaline conditions derepressibly express two alkaline phosphatases, while cultures grown under acid conditions weakly express only one alkaline phosphatase. Analysis of total internal phosphorus levels, whole-cell phosphatase activity and in-gel activity of protein extracts indicate that alkaline phosphatase expression is mediated by internal, as opposed to external, phosphorus levels.