Figure 3
From: Physicochemical modeling of the phytochrome-mediated photothermal sensing
IR thermal radiation influences the phytochrome-mediated photothermal morphogenesis. (a) Thermal kinetics of the Pfr-to-Pr conversion. The IR spectral irradiance values in Table 1 were used to calculate the half-life (t1/2) of Pfr at different temperatures. The t1/2 of Pfr at 22 °C was set to 1. (b) Estimation of Pr/Pfr ratios during dark reversion. (c) IR control of the phyABCDE hypocotyl growth. The Arabidopsis seedlings were grown under short days for 7 d at different temperatures. The R/IR ratio at 22 °C was set to 1. (d) IR-insensitive hypocotyl phenotype of Arabidopsis seedlings overexpressing a constitutively active phyB (YHB). Seedlings were grown as described in (c). The R/IR ratio at 22 °C was set to 1. (e) Effects of IR radiation on the hypocotyl growth of chromophore-defective hy1 mutant. Seedlings were grown under short days for 7 d at different temperatures. The R/IR ratio at 22 °C was set to 1.
