Table IV. Transcripts with involvement in primary N processes.

The table shows transcripts described in Figure 6 with significant changes (fold change > 2, false discovery rate P < 0.05; marked by asterisks) in at least one genotype/growth stage combination for low- versus high-N conditions. A20, A188 at 20 d; B20, B73 at 20 d; A30, A188 at 30 d; B30, B73 at 30 d.

Process	MaizeGDB Genome ID	Description	A20	B20	A30	B30	ME
Nitrate transport	GRMZM2G161459	NRT1.1, a dual-affinity nitrate transporter	−1.096*	−0.902	−1.476*	−1.219*	5
	GRMZM2G112154	NRT1.1, a dual-affinity nitrate transporter	−0.683*	−0.819	−0.939	−1.429*	18
	GRMZM2G455124	High-affinity nitrate transporter family	−0.247*	−0.105	−0.809	−2.454*	11
Nitrate reduction	GRMZM2G142386	Cytosolic isoform of nitrate reductase	−1.215*	−2.046*	−1.944*	−3.109*	18
	GRMZM2G104898	Cytosolic isoform of nitrate reductase	−2.633*	−2.774*	−2.443*	−4.118*	18
	GRMZM2G428027	Cytosolic isoform of nitrate reductase	−2.700*	−2.771*	−2.564*	−4.181*	18
	GRMZM2G076723	Nitrate reductase structural gene	−1.206*	−2.076*	−1.828*	−3.013*	18
Nitrite reduction	GRMZM2G079381	Ferredoxin-nitrite reductase.	−1.044*	−1.762	−1.307	−2.079*	11
	GRMZM2G000739	Uroporphyrin III methyltransferase	−1.532*	−2.136*	−1.346*	−3.152*	11
Amino acid metabolism	GRMZM2G178415	Glu dehydrogenase	0.038	−0.042	−0.797	−1.077*	41
	GRMZM2G078472	Asn synthetase	−3.466*	−2.733	−3.800*	−2.155	11
	GRMZM2G082032	Asparaginase	1.680*	1.403	0.819	0.332	15
	GRMZM2G088064	Ala aminotransferase	−2.590*	−1.568	−1.349*	−1.571*	18
	GRMZM2G119583	Acetyl-Orn transaminase	−0.286	−0.637	−0.523	−1.008*	18
	GRMZM2G028535	Glu 5-kinase	−1.425*	−2.143	−0.203	−1.194*	1
	GRMZM2G375504	Glu 5-kinase	−1.007*	−0.662	0.309	0.410	1
	GRMZM2G087103	Branched-chain amino acid aminotransferase	−1.327*	−0.172	−2.435*	−1.011	7
	GRMZM2G104613	3-Isopropylmalate dehydrogenase	−1.017*	−0.559	0.017	0.081	3
	GRMZM2G024686	Asp kinase	−2.409*	−0.693	−0.391	0.570	15
	GRMZM2G104546	Homo-Ser dehydrogenase	−0.772	−1.941	−0.281	−1.965*	20
	GRMZM2G050570	Thr synthase	−1.597*	−1.186	−1.180*	−1.744*	5
	GRMZM2G069203	Ser O-acetyltransferase	−0.726	−1.296	−1.058*	−1.231*	11
	GRMZM2G013430	Ser O-acetyltransferase	−1.933*	−2.890*	−2.315*	−3.361*	11
	GRMZM2G396212	3-Deoxy-7-phosphoheptulonate synthase	0.426*	0.376	0.576	1.162*	10
	GRMZM2G070218	Shikimate kinase	−1.396*	−1.446*	−0.974	−1.241*	5
	GRMZM2G161566	Shikimate kinase	−1.553*	−1.453	−1.012	−1.055	5
	GRMZM2G106950	Indole-3-glycerol-P synthase	−2.197*	−2.740	−3.164*	−1.951*	11
	GRMZM2G085381	Trp synthase	−2.503*	−0.411	−3.421*	0.415	11
	GRMZM2G015892	Trp synthase	−1.148	−1.146	−2.065*	−1.529	18
	GRMZM2G046163	Trp synthase	−1.163	−1.269	−2.026*	−1.681*	18
	GRMZM2G054465	Trp synthase	−1.045*	−0.358	−0.283	−0.104	5
Amino acid transport	GRMZM2G177659	Amino acid transporter	−1.632*	−1.035	−0.884	−0.610	10
	GRMZM2G010433	Amino acid transporter	2.221*	1.634	0.342	0.474	3
	GRMZM2G101125	Amino acid transporter	1.410*	1.641	0.862	0.887	3
	GRMZM2G108597	Amino acid transporter	4.131*	2.643*	3.836*	2.955*	11
Peptide transport	GRMZM2G135291	Oligopeptide transporter OPT superfamily	−1.200	−1.316	−0.879	−1.295*	6
	GRMZM2G026523	H+/oligopeptide symporter	−0.643	−0.614	−0.372	−1.077*	4
	GRMZM2G064091	Oligopeptide transport	−0.642	−1.037	−1.879	−2.104*	10
	GRMZM2G034389	Di- and tripeptide transporter	0.181	0.309	0.899	1.247*	18
	GRMZM2G470454	H+/oligopeptide symporter	1.028*	0.405	0.551	1.003	4
	GRMZM2G071759	Oligopeptide transporter	2.819*	2.698*	2.242*	3.104*	11