Light applied during cold acclimation modulates recovery of the petiole growth after the freezing stress

Temperature is a key environmental factor in plant production and its extremes cause high annual losses in agriculture. In this work, we have focused on the role of light conditions during cold acclimation process on the recovery of the growth after the freezing stress in Arabidopsis thaliana. Some mechanisms inducing cold tolerance were already been found but the role of light in these processes is still far from being resolved. Here we monitored the effect of the light during cold acclimation period on the recovery of the growth after the freezing stress. Our results show that the growth after the freezing stress represented by petiole elongation was attenuated in plants acclimated under standard light conditions and red light promoted faster recovery of the petiole growth. Our data demonstrate that light quality plays important role in recovery of the growth after the freezing stress.