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- W2007138316 abstract "Summary Intact gametophytes of Polypodium vulgare L. grown in liquid culture show acid phosphatase activity. A three-fold increase in activity occurs in phosphorus deficient medium. It is probable that two exocellular phosphatases are involved, a constitutive and an induced enzyme, both of which are produced by the rhizoids. The induced phosphatase appears to be repressed but not specifically inhibited by phosphate. Amylase activity is present in gametophytes grown in the presence of starch. Gametophytes grown in maltose medium show a low level of activity but none was detected in those grown in glucose medium or medium without carbohydrate. Thus the enzyme is probably substrate induced. It is produced by all cells of the gametophyte. Low concentrations of acid phosphatase and amylase are released into the external medium." @default.
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- W2007138316 date "1973-05-01" @default.
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- W2007138316 title "Phosphatase and amylase activity of intact fern gametophytes" @default.
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- W2007138316 doi "https://doi.org/10.1016/s0044-328x(73)80133-3" @default.
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