ROS-associated genes involved in the control of flower and gametophyte development. ROS-associated genes involved in the control of flower and gametophyte development. Genes involved in ROS production and processing are presented. Genetic analyses have reported that loss of function of these candidates is associated with abnormalities during flower and gametophyte development and thus revealed their functions in petal development and in determining fertility and development of both gametophytes. Amna Mhamdi, and Frank Van Breusegem Development 2018;145:dev164376 © 2018. Published by The Company of Biologists Ltd