Gibberellins and seed germination

Terezie Urbanova, Gerhard Leubner-Metzger

Research output: Chapter in Book/Report/Conference proceedingChapter


Gibberellins (GA) promote seed germination, but they are not simple ’Go Ahead’ (GA) molecules as the insight gained into the molecular mechanisms underlying their role in seeds appears to be complex. This chapter covers their central role in mediating the environmental and developmental control of seed germination, and how this differs from vegetative growth processes. Spatiotemporal patterns of GA metabolism and GID1-type receptor signalling in the key seed compartments determine tissue interactions and germination timing in response
to ambient environmental cues. Gibberellins are key players in seed temperature
responses; during thermoinhibition they interact with other hormonal pathways.
Allelochemicals such as myrigalone A inhibit seed germination by specific interference with GA metabolism and signalling. This reveals important ecophysiological roles for GAs in seeds and suggests that they are fundamental for studying species adaptation and interaction in natural and agricultural ecosystems upon climate change.
Original languageEnglish
Title of host publicationAnnual Plant Reviews
Subtitle of host publicationThe Gibberellins
EditorsPeter Hedden, Stephen G. Thomas
Number of pages31
ISBN (Print)978-1-119-21042-9
Publication statusPublished - May 2016


  • Abiotic stress and thermoinhibition
  • allelochemical myrigalone A
  • Arabidopsis thaliana
  • coat dormancy release
  • Delay of Germination1 dormancy gene
  • embryo growth potential
  • endosperm weakening
  • GID1-type gibberellin receptor signalling
  • Lepidium sativum
  • seed gibberellin metabolism

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