Influence of the kinetics of light increase on the photoprotection modulation.

<p>(A) Evolution of the number of absorbed photons per Chl <i>a</i> integrated over time (integrated absorbed light, Int Abs Light; expressed in mol photons mg Chl <i>a</i>⁻¹) over the light gradient, at the PFD peaks of 100, 250, 350, 500 and 650 µmol photons m⁻² s⁻¹, during the 5 h (white dots), 3 h (black squares) and 2 h kinetics of light increase (black triangles). Induction of the sustained light-acclimated NPQ (NPQ_sl; B) and evolution of the de-epoxidation state (DES = Dt/[Dd+Dt]; C) <i>versus</i> Int Abs Light during the 5 h (white dots), 3 h (black squares) and 2 h kinetics of light increase (black triangles). Values are means ± SD (<i>n</i> = 3).