Table 7: Intracellular and extracellular acid phosphatase activities in leaves and roots of rye (Secale cereale L.) plants cultured 3 weeks on phosphate-sufficient (+P) or phosphate-deficient (-P) nutrient medium. Means ± SD.

Parameters 7 days 14 days 21 days
+P -P +P -P +P -P
(μmol g-1 FW h-1)
Leaf Acid Phosphatases 115.3 ± 7.6 141 ± 17.9* 126 ± 18.8 237 ± 10.6* 197 ± 18.6 497 ± 61.2*
Root Intracellular
Acid Phosphatases 		61.1 ± 3.3 63 ± 3.1 85.7 ± 6.1 158 ± 13.6* 91.9 ± 10.5 248 ± 25.4*
Extracellular
Acid Phosphatase:
Intact Root 		48.5 ± 6.4 75.8 ± 3.9* 49.9 ± 3.5 119 ± 6.9* 30.5 ± 5.9 145 ± 11*
Extracellular
Acid Phosphatase:
Root Tips 		140.6 ± 7.2 141.7 ± 7.3 111 ± 9.5 261 ± 14.5* 76 ± 4.1 277 ± 30*

* Significantly different at 0.05