| Autor: |
Pyliotis, N., Ashford, A., Whitecross, M., Jacobsen, J. |
| Zdroj: |
Planta: An International Journal of Plant Biology; 1979, Vol. 147 Issue 2, p134-140, 7p |
| Abstrakt: |
A metal-salt precipitation method with p-nitrophenyl phosphate as substrate has been used to localize in the electron microscope acid phosphatase activity in isolated aleurone layers of barley ( Hordeum vulgare L.), treated for 16 h in the presence or absence of gibberellic acid (GA). The paper confirms results obtained earlier with an azo-dye precipitation method of enzyme localization. In addition the results show for the first time that in GA-treated tissue enzyme activity is associated with the endoplasmic reticulum (ER), there being reaction product deposited in the ER cisternae. It is suggested that this activity represents new enzyme synthesized on ER in response to GA and probably destined for secretion. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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