Table II. Number of transcripts differentially regulated by low- versus high-N conditions.

Significance threshold was set at fold change of > 2 and false discovery rate of P < 0.05.

Comparison	A188 Lamina		B73 Lamina		A188∩B73
	Down	Up	Down	Up	Down	Up
Low versus high Na	731	175	543	168	366	54
D20 low versus high Nb	748	346	109	35	75	18
D30 low versus high Nc	780	169	684	524	343	65
D20∩30 low versus high Nd	305	38	74	11	45	8

^aData averaged over samples harvested at 20 and 30 d after germination.

^bData only from samples harvested at 20 d after germination.

^cData only from samples harvested at 30 d after germination.

^dIntersection of transcripts significantly different at 20 and 30 d after germination.