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Phosphate Influx and Extracellular Phosphatase Activity in Barley Roots and Rose Cells
R. B. Lee
The New Phytologist
Vol. 109, No. 2 (Jun., 1988), pp. 141-148
Stable URL: http://www.jstor.org/stable/2434831
Page Count: 8
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The rate of phosphate influx, and the activity of extracellular phosphatase, were measured simultaneously in root systems of intact, sterile barley plants (Hordeum vulgare L.) of widely differing P status. Similar measurements were made on suspension cultures of rose cells (Rosa sp.) starved of P for various periods. Under the experimental conditions used, extracellular phosphatase activity greatly exceeded phosphate influx but there was a very significant correlation between the two. The possiblity of the extracellular phosphatase being involved in phosphate transport is discussed.
The New Phytologist © 1988 New Phytologist Trust