Table 1 Selected genes rapidly up-regulated by ammonium nitrate in rice roots.

From: Identification of early ammonium nitrate-responsive genes in rice roots

Gene Identifier

*Fold change

Gene description

Nitrate uptake

 Os04g0480200 LOC_Os04g40410

7.0

High-affinity nitrate transporter 2.2, NAR2.2

 Os02g0595900 LOC_Os02g38230

5.2

High-affinity nitrate transporter 2.1, NAR2.1

Nitrate/nitrite assimilation

 Os02g0770800 LOC_Os02g53130

65.8

Nitrate reductase [NAD(P)H], NIA

 Os01g0357100 LOC_Os01g25484

8.0

Ferredoxin–nitrite reductase, NIR

Ferredoxin reduction

 Os01g0860601 LOC_Os01g64120

42.2

Ferredoxin, root R-B1

 Os01g0631200 LOC_Os01g44050

32.3

Uroporphyrinogen-III C-methyltransferase, UPM

 Os03g0784700 LOC_Os03g57120

8.5

Ferredoxin–NADP reductase, FNR

 Os05g0443500 LOC_Os05g37140

2.9

Ferredoxin-6

 Os04g0528800 LOC_Os04g44650

2.1

Ferredoxin-thioredoxin reductase, FTR

Pentose phosphate pathway

 Os07g0406300 LOC_Os07g22350

5.1

Glucose-6-phosphate 1-dehydrogenase, G6PDH

 Os11g0484500 LOC_Os11g29400

4.3

6-Phosphogluconate dehydrogenase, 6PGDH

Amino acid transport

 Os06g0633100 LOC_Os06g42660

4.9

Glutamine dumper 6, GDU6

 Os08g0446800 LOC_Os08g34700

2.1

Glutamine dumper 2, GDU2

  1. Total RNA extracted from roots of 17-day-old rice seedlings grown in hydroponic solution without nitrogen (−N) or treated with 1.43 mM ammonium nitrate for 30 min (+N) was used for microarray analysis. *Fold change indicates the ratio of +N/−N.