Christian Triantaphylidès

TL;DR: Current knowledge on (1)O(2) management in plants and on the biological effects of this peculiar ROS are summarized to indicate that it has a crucial role in the responses of plants to light.

TL;DR: The results indicate that β-cyclocitral is a stress signal produced in high light that is able to induce defense mechanisms and represents a likely messenger involved in the 1O2 signaling pathway in plants.

TL;DR: Besides triggering a genetic cell death program, 1O2 plays a major destructive role during the execution of reactive oxygen species-induced cell death in leaf tissues.

TL;DR: It is shown that leaf carotenoids are also able to quench 1O2 by a chemical mechanism involving their oxidation, and β-Carotene endoperoxide was found to have a relatively fast turnover, decaying in the dark with a half time of about 6 h, which provides an early index of 1O1 production in leaves, which precedes the accumulation of fatty acid oxidation products.

TL;DR: It is demonstrated that, under light conditions, H2O2 plays an essential role in the execution of cell death triggered by an elicitor, cryptogein, which provokes a similar ROS-mediated lipid peroxidation.