Transcriptional and biochemical analyses of gibberellin expression and content in germinated barley grain.

ABSTRACT: Mobilization of reserves in germinated cereal grains is critical for early seedling vigour, global crop productivity, and hence food security. Gibberellins (GAs) are central to this process. We have developed a spatio-temporal model that describes the multifaceted mechanisms of GA regulation in germinated barley grain. The model was generated using RNA sequencing transcript data from tissues dissected from intact, germinated grain, which closely match measurements of GA hormones and their metabolites in those tissues. The data show that successful grain germination is underpinned by high concentrations of GA precursors in ungerminated grain, the use of independent metabolic pathways for the synthesis of several bioactive GAs during germination, and a capacity to abort bioactive GA biosynth

SUBMITTER: Betts NS 

PROVIDER: S-EPMC7242073 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature