Hydrogen Peroxide and GA₃ Levels Regulate the High Night Temperature Response in Pistils of Wheat (Triticum aestivum L.).

ABSTRACT: High night temperature (HNT) impairs crop productivity through the reproductive failure of gametes (pollen and pistil). Though female gametophyte (pistil) is an equal partner in the seed-set, the knowledge of the antioxidant system(s) and hormonal control of HNT tolerance or susceptibility of pistils is limited and lacking. The objectives of this study were to determine the antioxidant mechanism for homeostatic control of free radicals, and the involvement of abscisic acid (ABA) and gibberellic acid (GA₃) in HNT stress protection in the wheat pistils of contrasting wheat genotypes. We hypothesized that HNT tolerance is attributed to the homeostatic control of reactive oxygen species (ROS) and hormonal readjustment in pistils of the tolerant genotype. The ears of two contrasting

SUBMITTER: Mukherjee P 

PROVIDER: S-EPMC9952169 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature