Reactive oxygen species (ROS). Chemistry and role in plant physiology

GANGANELLI, INTI M; GALATRO, ANDREA; GERGOFF GROZEFF, GUSTAVO E.; BARTOLI CARLOS G; SENN, MARÍA EUGENIA

Oxygen, Nitrogen and Sulfur Species in Post-Harvest Physiology of Horticultural Crops

Elsevier

Lugar: Cambridge, Massachusetts; Año: 2024;

During the life cycle of plants, including the post-harvest period of fruit and vegetableproducts, ROS are produced in the electron transfer processes of basal metabolism andthey can accumulate in intra- and extra-cellular compartments under certain conditions.ROS are key players in physiological processes of development and response toenvironmental conditions, participating in growth, defense, acclimation and geneticallyprogrammed cell death. ROS homeostasis and actions depend on the balance betweenROS generation, and their counterpart ROS processing systems, playing a central role inshort- and long-term local and systemic signaling processes involving hormones,enzymes, calcium, among others. This chapter analyses the characteristics of ROSproduction in plants under basal and stress conditions, and the signaling pathways inwhich they play a fundamental role, such as development and response toenvironmental modifications.