Table II. Total element concentrations in shoots and roots of 6-week-old wild-type and nas4x mutant plants of Arabidopsis, cultivated under normal nutrient conditions in a hydroponic system.

All samples were dried, digested, and then analyzed by ICP-OES (n = 3).

Element	Wild-Type Shoot	nas4x Shoot	nas4x Shoot Percentage Difference from the Wild Type	P	Wild-Type Root	nas4x Root	nas4x Root Percentage Difference from the Wild Type	P
	µg g−1 dry wt				µg g−1 dry wt
Mn	412 ± 14	322 ± 5	−21.9	<0.001	182 ± 28	272 ± 87	49.2	0.167
Fe	198 ± 86	168 ± 46	−15.4	0.618	9,890 ± 528	15,400 ± 2,720	55.7	0.026
Zn	156 ± 12	73 ± 5	−53.0	<0.001	1,000 ± 262	1,630 ± 182	63.1	0.027