Reactive Oxygen Species and Gibberellin Acid Mutual Induction to Regulate Tobacco Seed Germination.

ABSTRACT: Seed germination is a complex process controlled by various mechanisms. To examine the potential contribution of reactive oxygen species (ROS) and gibberellin acid (GA) in regulating seed germination, diphenylene iodonium chloride (DPI) and uniconazole (Uni), as hydrogen peroxide (H₂O₂) and GA synthesis inhibitor, respectively, were exogenously applied on tobacco seeds using the seed priming method. Seed priming with DPI or Uni decreased germination percentage as compared with priming with H₂O, especially the DPI + Uni combination. H₂O₂ and GA completely reversed the inhibition caused by DPI or Uni. The germination percentages with H₂O₂ + Uni and GA + DPI combinations kept the same level as with H₂O. Me

SUBMITTER: Li Z 

PROVIDER: S-EPMC6190896 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature