Table 1 Differentially regulated genes putatively related to sugar metabolism as determined via microarray analysis; the values represent fold-changes. Up arrow: Upregulated; down arrow: downregulated. Ct: control; LN: low N; RN: resupply of N

hv_03530

Sucrose synthase (SuSy)

↑9.1

↑9.1

↓7.5

hv_03531

Sucrose synthase (SuSy)

↑8.7

↑8.5

↓8.1

hv_20661

Sucrose synthase (SuSy)

–

–

↓4.5

hv_19372

Cell wall invertase

–

2.6

–

hv_22536

Cell wall invertase

–

–

↓13.5

hv_03914

Vacuolar invertase

–

–

↓60.5

hv_42447

Vacuolar invertase

–

–

↓25.3

hv_23265

Fructokinase

↓15.1

↓5.5

↑27.9

hv_11681

Fructokinase

–

–

2.3

hv_12878

Starch cleavage-beta amylase

–

–

−2.5

hv_22195

Starch cleavage-beta amylase

–

↓2.2

↑3

hv_01022

Degradation starch.D enzyme

–

–

↑2.5

hv_02206

Degradation starch.D enzyme

–

–

↑4.7

hv_02207

Degradation starch.D enzyme

↓3.5

–

↑3.5

hv_02208

Degradation starch.D enzyme

–

–

↑4.6

hv_04176

Degradation starch.D enzyme

–

↓4.1

↑3.7

hv_45799

Degradation starch.transporter

–

↓2.5

↑3.7

hv_08578

Glucan water dikinase

↓4.8

–

hv_03439

Degradation starch.ISA3

–

↓2.1

–

hv_36596

Starch synthase

–

–

2.5

hv_05868

Starch branching enzyme

–

–

↑43.4

hv_23288

Starch debranching enzyme

–

↓4.6

↑4.7

hv_12166

T6P synthase (TPS)

–

↓2.1

↑2.2

hv_10051

T6P phosphatase (TPP)

↓2.9

–

–

hv_41351

T6P phosphatase (TPP)

–

–

↓3

hv_04008

Potential TPS/TPP

–

↓2.7

–

hv_04009

Potential TPS/TPP

–

↓5.6

↑6.3