Table 2 Expression of nitrate assimilation genes under different N conditions

Nitrate transport

Low-affinity nitrate transporter

NRT1.1

At1g12110

1.3

1.8

1.8

-1.3

NRT1.2

At1g69850

-

-

-

-

NRT1.3

At3g21670

-1.1

-2.1

1.0

1.6

NRT1.4

At2g26690

-1.1

-2.1

1.2

2.4*

High-affinity nitrate transporter

NRT2.1

At1g08090

-

-

-

-

NRT2.2

At1g08100

-

-

-

-

NRT2.3

At5g60780

-

-

-

-

NRT2.4

At5g60770

-

-

-

-

NRT2.5

At1g12940

-

-

-

-

NRT2.6

At3g45060

-

-

-

-

NRT2.7

At5g14570

-

-

-

-

Nitrate reduction

Nitrate reductase 1 (NR1)

At1g77760

-1.2

-1.9

11.1*

1.5

Nitrate reductase 2 (NR2)

At1g37130

-1.2

-3.3*

8.1*

2.9*

Nitrite reductase (NiR)

At2g15620

-1.2

-4.4*

15.1*

3.2*

urophorphyrin III methylase (UPM1)

At5g40850

1.0

-1.5

10.1*

1.5

Fd NADP (+) reductase (FNR)

At4g05390

1.3

1.2

3.6*

1.0

At1g30510

1.1

1.1

3.1*

1.0

At4g32360

-

-

-

-

At5g66190

-

-

-

-

At1g20020

-

-

-

-

At5g66810

-

-

-

-

Ammonia assimilation

Glutamine synthetase

GS1-1

At5g37600

1.7

4.7*

-1.6

-3.4*

GS1-2

At1g66200

-

-

-

-

GS1-3

At3g17820

-

-

-

-

GS1-4

At5g16570

1.7

6.9*

-2.0

-3.7*

GS1-5

At1g48470

-

-

-

-

Glutamate synthetase

GS2

At5g35630

-

-

-

-

GOGAT1

At5g04140

-

-

-

-

GOGAT2

At2g41220

-

-

-

-

GOGAT3

At5g53460

-

-

-

-

Asparagines synthetase

AS1

At3g47340

-

-

-

-

AS2

At5g65010

-1.3

-3.2*

7.6*

2.9*

AS3

At5g10240

-

-

-

-