Table II.

Cu concentrations, plant growth, and carbon isotope discrimination in the plant samples

The values are averages and se of three to four independent experiments.

Sample	Cu	Shoot Fresh Weight	Average δ13C
	mg/g	% of control
10 μm Cu2+, emerged culture	9,200 ± 1,500	66.8 ± 9.2	−26.65 ± 1.69
10 μm Cu2+, submerged culture	9,100 ± 800	97.7 ± 3.8	−26.33 ± 1.75
0.1 μm Cu2+, emerged culture	127 ± 12	100 per definition	−27.21 ± 1.31
0.1 μm Cu2+, submerged culture	93 ± 3	100 per definition	−26.15 ± 1.45