Table 1.

ADPG hydrolyzing enzyme activities in higher plants

Plant tissues	Specific activity, milliunits/ mg of protein
	+ADPG	+ADPG+ PPi	+ADPG+ PPi+3-PGA
Monocotyledonous
Barley leaf	113.7  ± 3.5	72.2  ± 0.7	103.8  ±  5.0
Barley leaf endosperm, 30 days after pollination	2.0  ± 0.2	15.9  ± 1.2	21.8  ±  0.3
Wheat leaf	22.4  ± 2.5	15.1  ± 0.9	50.8  ±  0.6
Wheat leaf endosperm, 30 days after pollination	1.7  ± 0.2	48.3  ± 2.6	56.4  ±  1.4
Dicotyledonous
A. thaliana leaf, Wt	5.2  ± 0.6	5.1  ± 0.8	42.1  ±  3.3
A. thaliana leaf, Adg	5.9  ± 1.7	6.5  ± 1.3	7.2  ±  0.2
Pepper leaf	5.0  ± 0.6	7.3  ± 1.0	24.8  ±  0.8
Tomato leaf	5.6  ± 0.5	16.1  ± 0.1	82.4  ±  6.9
Sycamore cultured cells	16.5  ± 7.2	30.6  ± 5.4	137.4  ± 39.8

 Data are presented as the mean ± SD obtained from five independent experiments. Details of enzyme assay methods to measure G1P production are described in Material and Methods.