Table 1. Experimental culture conditions used in experiments.

		Condition
		OLHN	ONLN	LLHN	LLLN
Incident light (µmol photons m−2 s−1)	39±4	×	×
	5±1			×	×
Nitrogen concentration (mM NaNO3)	9	×		×
	0.036		×		×

OLHN, optimal light and high nitrogen condition; OLLN, optimal light and low nitrogen condition; LLHN, low light and high nitrogen condition; LLLN, low light and low nitrogen condition.