Table 6.
Hormone concentrations (IAA, ABA, Z, tZR, cZR, DHZR, and iPR) in flower extracts from Arabidopsis WT and atfer1-3-4 plants grown in normal and Fe excess conditions. The results are presented as the means (for n=3) ±SD.
| Hormone LQ (pmol g–1 FW) | WT (pmol g–1 FW) | atfer1-3-4 (pmol g–1 FW) | WT++ (pmol g–1 FW) | atfer1-3-4 ++ (pmol g–1 FW) | |||
|---|---|---|---|---|---|---|---|
| IAA | 3 | 77.76±3.11 | 79.85±12.84 | 81.68±14.62 | 76.18±6.66 | ||
| ABA | 1.5 | 165.10±16.16 | 170.99±49.83 | 147.07±29.09 | 137.39±39.24 | ||
| Z | 0.23 | 0.55±0.06 | 0.57±0.05 | 0.50±0.01 | 0.68±0.08 | ||
| tZR | 0.09 | 2.69±0.12 | 2.74±0.19 | 3.20±0.27 | 3.13±0.29 | ||
| cZR | 0.09 | 1.44±0.07 | 1.50±0.07 | 1.46±0.29 | 1.26±0.12 | ||
| DHZR | 0.28 | 0.45±0.08 | 0.29±0.11 | 0.33±0.15 | BLQ | ||
| iPR | 0.04 | 1.06±0.26 | 1.13±0.34 | 1.19±0.08 | 1.29±0.04 | ||
| ANOVA source | IAA | ABA | Z | tZR | cZR | DHZR | iPR |
| Plant class | NS | NS | * | NS | NS | * | NS |
| Fe condition | NS | NS | NS | * | NS | NS | NS |
| Plant class×Fe condition | NS | NS | * | * | * | * | NS |
WT, Arabidopsis Col-0 grown in normal conditions; atfer1-3-4, Arabidopsis mutant grown in normal conditions; WT++, Arabidopsis Col-0 grown in Fe excess; atfer1-3-4++, Arabidopsis mutant grown in Fe excess.
IAA, indole-3-acetic acid; ABA, abscisic acid; Z, trans-zeatin; tZR, trans-zeatin riboside; cZR, cis-zeatin riboside; DHZR, dihydrozeatin riboside; iPR, N 6-isopentenyladenosine; LQ, limit of quantification; BLQ, below the limit of quantification.
Statistical significance of the interaction among the different parameters: one-way ANOVA, LSD Fisher test (*significant differences P ≤ 0.05).