Table V. Transcripts with involvement in Pi homeostasis.

Response to N deprivation in maize leaves. Asterisks mark significant differences. A20, A188 at 20 d; B20, B73 at 20 d; A30, A188 at 30 d; B30, B73 at 30 d.

MaizeGDB Genome ID	Description	A20	B20	A30	B30	ME
Pi transporter
AC147602.5_FGT005	Pi transporter	−0.016	0.088	0.757	0.508	1
AC235543.1_FGT002	Pi transporter	0.296	0.416	0.217	−0.176	12
GRMZM2G009779	Pi transporter	−1.098*	−0.902	−1.816*	−1.349*	11
GRMZM2G017047	Pi transporter	0.129	0.204	0.245	0.331	7
GRMZM2G046681	Pi transporter	−0.376	−0.123	0.438	0.346	7
GRMZM2G075870	Pi transporter	−1.177*	−0.785	−1.809*	−1.408*	11
GRMZM2G088196	Pi transporter	−0.300	−0.131	0.470	0.354	7
GRMZM2G092793	Pi transporter	0.043	0.015	0.007	0.307	2
GRMZM2G139639	Pi transporter	−1.364*	−1.134	−2.161*	−1.671*	11
GRMZM2G146240	Pi transporter	0.193	−0.063	−0.085	−0.012	4
GRMZM2G310175	Pi transporter	−0.043	0.348	0.159	0.332	1
GRMZM2G045473	PHT1-like high-affinity Pi transporter	−1.233*	−1.255	−1.906*	−1.360*	11a
GRMZM2G154090	PHT1-like high-affinity Pi transporter	−1.098*	−0.902	−1.816*	−1.349*	11a
GRMZM2G092780	PHT12-like low-affinity Pi transporter	−0.407	−0.383	−0.574	−0.761	15a
GRMZM2G158489	Protein transport protein SEC12p	−1.310*	−1.555	−1.362*	−1.154*	11a
SPX domain proteins
GRMZM2G335989	PHO1 family, Pi transport and homeostasis	−1.033	−1.038	−2.287*	−1.770*	11
GRMZM2G466545	PHO1 family, Pi transport and homeostasis	−0.243	−0.134	−0.656	−0.782	20a
GRMZM2G083655	SPX domain-containing protein1-like	−1.789*	−2.317	−3.013*	−2.472*	11
GRMZM2G035579	SPX domain-containing protein1-like	−3.868*	−3.555	−3.896*	−3.527*	11
GRMZM2G171423	SPX domain-containing protein1-like	−1.789*	−2.317	−3.013*	−2.472*	11a
GRMZM2G122108	SPX domain-containing protein4-like	−1.109*	−1.350	−2.090*	−1.228*	11
GRMZM2G370780	SPX domain-containing protein5-like	−2.783*	−2.915	−4.292*	−2.884*	11a
GRMZM2G065989	SPX domain-containing protein6-like	−4.573*	−4.197	−6.061*	−4.368*	11
GRMZM2G086430	SPX-MFS protein, SPX domain membrane protein	−1.854*	−2.408*	−2.691*	−2.058	11
GRMZM2G050329	SPX-MFS protein, SPX domain membrane protein	1.358*	1.662	1.456*	3.520*	1
Transcription factors involved in Pi regulation
GRMZM2G024530	PFT1-like bHLH transcription factor	0.190	0.148	0.539	0.219	1a
GRMZM2G006477	PHR1-like transcription factor	0.093	−0.082	0.006	−0.402	14a
GRMZM2G162409	PHR1-like transcription factor	−0.028	−0.306	−0.796	−1.472	1a
GRMZM2G096358	Transcription factor, Myb superfamily	−0.259	−1.903	−1.173*	−1.161	46a
Other Pi regulators
GRMZM2G436295	Noncoding RNA involved in Pi allocation	−2.767	−3.731	−3.826*	−3.054*	1a
GRMZM2G026391	Oligopeptide transporter OPT superfamily	−1.200	−1.316	−0.879	−1.295*	6
GRMZM2G464572	PHO2-like ubiquitin E2 conjugase	−1.086*	−1.793	−1.705*	−1.215*	11a
GRMZM2G100652	SQD2-like sulfolipid synthesis protein	−1.795*	−1.717	−2.391*	−1.759*	11a
GRMZM2G150496	IPK1-like inositol-pentakisphosphate 2-kinase	−0.643	−0.301	−0.527	−0.685	14a
GRMZM2G054050	LPR1-like multicopper oxidase	−0.101	−0.393	−0.695	−0.365	1a
GRMZM2G086727	LPR1-like multicopper oxidase	−0.140	−0.356	−0.636	−0.467	1a
GRMZM2G004414	CAX1-like K+-dependent Na:Ca2+ antiporter	0.337	0.294	−0.535	−0.576	28a
GRMZM2G011592	CAX3-like Ca2+/H+ antiporter	−0.669	−0.838	−1.589	−1.291	1a
GRMZM2G002999	SIZ1-like SUMO E3 ligase	−0.036	−0.070	0.193	−0.105	1a
GRMZM2G155123	SIZ1-like SUMO E3 ligase	0.323	0.258	0.103	0.114	5a
GRMZM2G060824	PDR2-like P-type ATPase cation pumps	0.083	0.184	0.221	−0.013	9a
GRMZM2G088487	ARP6-like component in chromatin complex	0.074	0.186	0.233	0.314	23a

^aTranscripts that have been described by Calderón-Vázquez et al. (2011).