Experimental setup for AIRT; temperature curves of aluminium and a Ficus benjamini leave

(A) Experimental setup.

(B) Reference experiment with wet filter paper (proof of concept)

(C) Infrared heaters before, after and during the heat pulse.

(D) This figure shows the background temperature (aluminium) and the temperature of a leaf sample (Ficus benjamini) during and after heat pulse application (pulse duration: 1.15 s). Background temperature was measured by placing crumpled aluminium foil in the center of the heater beam.

(E) false colour timelapse of the recorded images during the heat pulse presented in (C), showing the leaf sample and the crumpled aluminium foil

(F) same as (E), but without sample and reference.