Shade-avoidance responses become more aggressive in warm environments

ROMERO MONTEPAONE, SOFIA; CASAL, JORGE; POODTS, SOFIA

Simposio; Young Researchers Symposium on Plant Photobiology; 2018

Light and temperature are two of the major environmental cues in the control of plant growth and development. Increasing intensities of neighbour cues initiate the so-called shade-avoidance responses, including enhanced stem growth, mainly by reducing the activities of phyB and cry1. phyB is also able to sense temperature. At high irradiances (as those observed in the field), phyA also contributes to the inhibition of stem growth. Plants can eventually experience similar neighbour cues under different weather conditions. The aim of this work was to elucidate the degree of impact of weather conditions (specifically irradiance patterns, mean temperature and thermal amplitude) on the response of stem growth to neighbour cues.