Fig. 2.

Overexpression of ABA receptors affects growth and leaf temperatures. Arabidopsis Col-0 lines overexpressing the 14 different ABA receptors RCARs (R1–R14)/PYR1/PYLs (P1–P13) under the constitutive viral promoter 35S were homozygous for the transgene. Independent lines are denoted by subscript numbers. (A) Thermogram of the plants grown for 40 d under short day (8 h of light, photon density of 150 μmol⋅m⁻²⋅s⁻¹) and under well-watered conditions (Ψ ≥ −0.02 bar). Four plants were grown per line in separate pots at randomized positions and the thermal pictures were arranged in groups after imaging. (B) Leaf area as projected rosette size and leaf temperatures from data shown in A. The threshold value of Col-0 is indicated by a dotted line. n = 4 biological replicates per line, ± SEM, **P < 0.001 compared with wild type.