Table 2.

Photosynthetic and respiratory rates of acetate versus CO₂-grown cells in various iron concentrations

Fe (μM)	Acetate		CO2
	Photosynthetic ratea	Respiration ratea	Photosynthetic ratea	Respiration ratea
0.1	3.1 ± 0.8	−2.1 ± 0.4	5.2 ± 1.4	−0.8 ± 0.1
0.2	3.4 ± 0.7	−1.9 ± 0.2	5.9 ± 0.8	−0.8 ± 0.2
1	4.9 ± 1.2	−1.9 ± 0.6	6.0 ± 0.6	−0.6 ± 0.0
20	6.7 ± 0.8	−2.5 ± 0.4	6.1 ± 0.6	−0.7 ± 0.1

Photosynthesis measured at 217 μmol photons m⁻² s⁻¹. Standard deviation based on biological triplicates

^anmol ml⁻¹ min⁻¹ 10⁶ cells⁻¹