Table II. Expression of GA-related genes in plants treated with PAC and/or GA grown at 350 or 750 µmol CO2 mol−1

Asterisks indicate significant differences in gene expression between ambient and elevated [CO2], as determined by Student's t test (P < 0.05). Values in boldface were determined to be significantly different from the control. Values are means ± se of three independent replicates.

Log2 (Treatment − Control)
Arabidopsis Genome Initiative IdentifierName350 µmol CO2 mol−1750 µmol CO2 mol−1Ambient CO2 versus High CO2
GAPACPAC + GAGAPACPAC + GAGAPACPAC + GA
At5g25900KO−0.51 ± 0.041.29 ± 0.06−0.17 ± 0.04−0.42 ± 0.070.84 ± 0.11−0.13 ± 0.021.211.53*1.31
At1g05160KAO1−0.47 ± 0.080.57 ± 0.04−0.34 ± 0.05−0.39 ± 0.030.32 ± 0.07−0.28 ± 0.041.201.78*1.21
At4g25420GA20ox1−2.47 ± 0.252.59 ± 0.06−3.36 ± 0.49−2.23 ± 0.111.80 ± 0.11−2.83 ± 0.171.111.44*1.19
At5g51810GA20ox2−4.95 ± 0.435.00 ± 0.16−5.24 ± 0.37−4.70 ± 0.393.65 ± 0.24−4.30 ± 0.521.051.37*1.22
At5g07200GA20ox3−3.84 ± 0.314.83 ± 0.09−4.28 ± 0.20−3.79 ± 0.233.42 ± 0.13−3.93 ± 0.271.011.41*1.09
At1g15550GA3ox1−2.86 ± 0.073.06 ± 0.23−2.90 ± 0.19−2.47 ± 0.122.14 ± 0.17−2.78 ± 0.341.161.43*1.04
At1g80340GA3ox2−0.58 ± 0.041.64 ± 0.13−1.29 ± 0.15−0.51 ± 0.061.47 ± 0.13−0.78 ± 0.071.131.111.65*
At1g78440GA2ox10.74 ± 0.10−3.48 ± 0.340.43 ± 0.050.62 ± 0.07−1.84 ± 0.120.40 ± 0.031.191.89*1.07
At1g30040GA2ox20.84 ± 0.11−2.03 ± 0.211.35 ± 0.070.68 ± 0.03−0.72 ± 0.121.29 ± 0.101.232.82*1.05
At2g34555GA2ox31.34 ± 0.10−0.46 ± 0.050.93 ± 0.080.85 ± 0.07−0.26 ± 0.010.88 ± 0.051.58*1.77*1.06
At3g63010GID1B−1.18 ± 0.113.04 ± 0.13−0.45 ± 0.14−0.67 ± 0.061.96 ± 0.21−0.39 ± 0.021.76*1.55*1.15
At1g66350RGL10.44 ± 0.06−1.37 ± 0.070.25 ± 0.040.42 ± 0.01−1.17 ± 0.090.23 ± 0.041.051.171.09
At3g03450RGL20.82 ± 0.09−1.32 ± 0.200.64 ± 0.080.57 ± 0.04−0.54 ± 0.060.51 ± 0.081.44*2.44*1.25
At5g17490RGL31.03 ± 0.08−1.15 ± 0.061.22 ± 0.110.95 ± 0.03−0.73 ± 0.050.70 ± 0.101.081.57*1.74*